From 0e3ad3cae04f444e91449c1e7c7d87c17a4657c1 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 10 Jul 2025 16:57:30 -0500 Subject: [PATCH 001/120] Add camera projection Transformation Defines how 2D view NDC are mapped to vectors in 3D space --- src/scenex/adaptors/_pygfx/_camera.py | 10 ++++ src/scenex/adaptors/_vispy/_camera.py | 69 +++++++++++++++++++++++---- src/scenex/model/_nodes/camera.py | 13 +++++ 3 files changed, 82 insertions(+), 10 deletions(-) diff --git a/src/scenex/adaptors/_pygfx/_camera.py b/src/scenex/adaptors/_pygfx/_camera.py index 011ec339..cab8fc9e 100644 --- a/src/scenex/adaptors/_pygfx/_camera.py +++ b/src/scenex/adaptors/_pygfx/_camera.py @@ -13,6 +13,7 @@ if TYPE_CHECKING: from scenex import model + from scenex.model import Transform logger = logging.getLogger("scenex.adaptors.pygfx") @@ -60,6 +61,9 @@ def set_viewport(self, viewport: pygfx.Viewport) -> None: # and should perhaps be moved to the View Adaptor self.pygfx_controller.add_default_event_handlers(viewport, self._pygfx_node) + def _snx_set_projection(self, arg: Transform) -> None: + self._pygfx_node.projection_matrix = arg.root # pyright: ignore[reportAttributeAccessIssue] + def _snx_zoom_to_fit(self, margin: float) -> None: # reset camera to fit all objects if not (scene := self._camera_model.parent): @@ -78,4 +82,10 @@ def _snx_zoom_to_fit(self, margin: float) -> None: height = 1 cam.width = width cam.height = height + self._camera_model.center = tuple(np.mean(bb, axis=0)) cam.zoom = 1 - margin + # FIXME: Pyright + self._camera_model.transform = cam.local.matrix.T # pyright: ignore[reportAttributeAccessIssue] + # HACK: Ideally, we'd use `cam.projection_matrix`, but it's a cached + # property that doesn't get recomputed. + self._camera_model.projection = cam._update_projection_matrix() # pyright: ignore[reportAttributeAccessIssue] diff --git a/src/scenex/adaptors/_vispy/_camera.py b/src/scenex/adaptors/_vispy/_camera.py index c5195ae3..9edb283b 100644 --- a/src/scenex/adaptors/_vispy/_camera.py +++ b/src/scenex/adaptors/_vispy/_camera.py @@ -1,17 +1,34 @@ from __future__ import annotations -from typing import TYPE_CHECKING, Any +from typing import TYPE_CHECKING, Any, cast import numpy as np +import vispy.geometry import vispy.scene from scenex.adaptors._base import CameraAdaptor +from scenex.model import Transform from ._node import Node if TYPE_CHECKING: from scenex import model - from scenex.model import Transform + + +class _Arcball(vispy.scene.ArcballCamera): + def _get_dim_vectors(self) -> tuple[np.ndarray, np.ndarray, np.ndarray]: # pyright: ignore[reportIncompatibleMethodOverride] + return np.array((0, +1, 0)), np.array((0, 0, +1)), np.array((+1, 0, 0)) + # # Specify up and forward vector + # M = {'+z': [(0, 0, +1), (0, 1, 0)], + # '-z': [(0, 0, -1), (0, 1, 0)], + # '+y': [(0, +1, 0), (1, 0, 0)], + # '-y': [(0, -1, 0), (1, 0, 0)], + # '+x': [(+1, 0, 0), (0, 0, 1)], + # '-x': [(-1, 0, 0), (0, 0, 1)], + # } + # up, forward = M[self.up] + # right = np.cross(forward, up) + # return np.array(up), np.array(forward), right class Camera(Node, CameraAdaptor): @@ -23,11 +40,13 @@ def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: self._camera_model = camera if camera.type == "panzoom": self._vispy_node = vispy.scene.PanZoomCamera() + self._vispy_node.flip = (False, True, False) self._vispy_node.interactive = True elif camera.type == "perspective": # TODO: These settings were copied from the pygfx camera. # Unify these values? - self._vispy_node = vispy.scene.ArcballCamera(70) + self._vispy_node = _Arcball(70) + self._vispy_node.up = "+y" self._snx_zoom_to_fit(0.1) @@ -41,12 +60,13 @@ def _snx_set_type(self, arg: model.CameraType) -> None: raise NotImplementedError() def _snx_set_transform(self, arg: Transform) -> None: - if isinstance(self._vispy_node, vispy.scene.PanZoomCamera): - self._vispy_node.tf_mat = vispy.scene.transforms.MatrixTransform( - np.asarray(arg) - ) - else: - super()._snx_set_transform(arg) + # FIXME: Handle scaling + # FIXME: Y-panning inverted? + self._vispy_node.center = tuple(arg.root[3, :3]) + + def _snx_set_projection(self, arg: Transform) -> None: + pass + # self._pygfx_node.projection_matrix = arg.root def _view_size(self) -> tuple[float, float] | None: """Return the size of first parent viewbox in pixels.""" @@ -54,4 +74,33 @@ def _view_size(self) -> tuple[float, float] | None: def _snx_zoom_to_fit(self, margin: float) -> None: # reset camera to fit all objects - self._vispy_node.set_range() + self._vispy_node.set_range(margin=margin) + vis_tform = self._vispy_node.transform + + tform = Transform() + if isinstance(vis_tform, vispy.scene.transforms.STTransform): + vis_matrix = cast( + "vispy.scene.transforms.MatrixTransform", vis_tform.as_matrix() + ) + tform = Transform(vis_matrix.matrix) + elif isinstance(vis_tform, vispy.scene.transforms.MatrixTransform): + tform = Transform(vis_tform.matrix) + + # Vispy's camera transforms map canvas coordinates to world coordinates. + # Thus the projection matrix should map NDC coordinates to canvas + # coordinates, to obtain the desired effect of mapping NDC coordinates in + # scenex to world coordinates through the projection and transform matrices. + if vb := self._vispy_node.viewbox: + w, h = cast("tuple[float, float]", vb.size) + # This transform maps NDC coordinates to canvas position + self._de_NDC = ( + Transform().translated((-w / 2, -h / 2)).scaled((2 / w, 2 / h, 1)).T + ) + # This transform maps NDC coordinates to TRANSFORMED world coordinates + tform = self._de_NDC @ tform.T + + untranslated_tform = tform.root.copy() + untranslated_tform[:3, 3] = 0.0 + self._camera_model.projection = Transform(untranslated_tform) + + self._camera_model.transform = Transform().translated(self._vispy_node.center) diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index ceea445b..06ca085b 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -4,6 +4,8 @@ from pydantic import Field +from scenex.model._transform import Transform + from .node import Node CameraType = Literal["panzoom", "perspective"] @@ -17,6 +19,13 @@ class Camera(Node): The camera lives in, and is a child of, a scene graph. It defines the view transformation for the scene, mapping it onto a 2D surface. + + Cameras have two different Transforms. Like all Nodes, it has a transform + `transform`, describing its location in the world. Its other transform, + `projection`, describes how 2D normalized device coordinates + {(x, y) | x in [-1, 1], y in [-1, 1]} map to a ray in 3D world space. The inner + product of these matrices can convert a 2D canvas position to a 3D ray eminating + from the camera node into the world. """ node_type: Literal["camera"] = "camera" @@ -31,3 +40,7 @@ class Camera(Node): center: Position = Field( default=(0, 0, 0), description="Center position of the view." ) + projection: Transform = Field( + default_factory=Transform, + description="Describes how 3D points are mapped to a 2D canvas", + ) From 39ca74456cb452c2be68620f094b824b6195d8ab Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 11 Jul 2025 17:43:21 -0500 Subject: [PATCH 002/120] Add a projection example --- examples/camera_projection.py | 48 ++++++++++ pyproject.toml | 2 +- src/scenex/utils/projections.py | 156 ++++++++++++++++++++++++++++++++ 3 files changed, 205 insertions(+), 1 deletion(-) create mode 100644 examples/camera_projection.py create mode 100644 src/scenex/utils/projections.py diff --git a/examples/camera_projection.py b/examples/camera_projection.py new file mode 100644 index 00000000..50b849e8 --- /dev/null +++ b/examples/camera_projection.py @@ -0,0 +1,48 @@ +import numpy as np + +import scenex as snx +from scenex.model._transform import Transform +from scenex.utils import projections + +try: + from imageio.v2 import volread + + url = "https://gitlab.com/scikit-image/data/-/raw/2cdc5ce89b334d28f06a58c9f0ca21aa6992a5ba/cells3d.tif" + data = np.asarray(volread(url)).astype(np.uint16)[:, 0, :, :] +except ImportError: + data = np.random.randint(0, 2, (3, 3, 3)).astype(np.uint16) + +view = snx.View( + blending="default", + scene=snx.Scene( + children=[ + snx.Volume( + data=data, + clims=(data.min(), data.max()), + ), + ] + ), + # camera=snx.Camera(type="perspective"), +) + +# both are optional, just for example +snx.use("pygfx") +# snx.use("vispy") + +canvas = snx.show(view) + +view.camera.transform = Transform().translated((127.5, 127.5, 228)) + +# view.camera.projection = projections.orthographic( +# 1.1 * data.shape[0], +# 1.1 *data.shape[1] +# ) +view.camera.projection = projections.perspective( + zoom_factor=0.9, + fov=70, + view_width=view.layout.size[0], + view_height=view.layout.size[1], + depth=366.9768, +) + +snx.run() diff --git a/pyproject.toml b/pyproject.toml index 572f215a..cebe109e 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -126,7 +126,7 @@ module = ["rendercanvas.*"] follow_untyped_imports = true [[tool.mypy.overrides]] -module = ["pygfx.*", "vispy.*", "wgpu.*"] +module = ["pygfx.*", "vispy.*", "wgpu.*", "pylinalg.*"] ignore_missing_imports = true [tool.pydantic-mypy] diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py new file mode 100644 index 00000000..e708ff47 --- /dev/null +++ b/src/scenex/utils/projections.py @@ -0,0 +1,156 @@ +"""Utilities for creating projection matrices.""" + +from math import pi, tan + +import pylinalg as la + +from scenex.model._transform import Matrix3D, Transform + + +def orthographic( + width: float, + height: float, +) -> Transform: + """Creates an orthographic projection matrix. + + Parameters + ---------- + width: float + The width of the camera rectangle + height: float + The height of the camera rectangle + + Returns + ------- + projection: Transform + A Transform matrix creating an orthographic camera view + """ + return Transform().scaled((2 / width, 2 / height, 1)) + + +def perspective( + zoom_factor: float, + fov: float, + view_width: float, + view_height: float, + depth: float, + aspect: float = 1.0, + maintain_aspect: bool = True, + canvas_aspect: float = 1.0, +) -> Transform: + """Creates a perspective projection matrix. + + Derived from + https://github.com/pygfx/pygfx/blob/e5d918c010f0de1168aefe309f9cc9279851a9b4/pygfx/cameras/_perspective.py#L348 + + TODO: Explain this code. This reference may contain the information necessary: + https://www.scratchapixel.com/lessons/3d-basic-rendering/3d-viewing-pinhole-camera/virtual-pinhole-camera-model.html + + Parameters + ---------- + zoom_factor: float + TODO + fov: float + Controls how much of the scene is viewed. + view_width: float + TODO + view_height: float + TODO + TODO: Consider passing the view model through instead of these parameters + depth: float + TODO + aspect: float + Frustum aspect radio (width / height) + maintain_aspect: bool = True + Whether to conform to the aspect ratio of the canvas if it differs from the + aspect ratio of the frustum. Default True + canvas_aspect: float + Canvas aspect ratio + TODO: Can't we just pass one of the two through? + + Returns + ------- + projection: Transform + A Transform matrix creating an orthographic camera view + """ + near, far = _get_near_and_far_plane(fov, depth) + + # if self._view_offset is not None: + # # The view_offset should override the aspect, via its full (virtual) size + # view_aspect = ( + # self._view_offset["full_width"] / self._view_offset["full_height"] + # ) + + if fov > 0: + # Get the reference width / height + size = 2 * near * tan(pi / 180 * 0.5 * fov) / zoom_factor + # Pre-apply the reference aspect ratio + height = 2 * size / (1 + aspect) + width = height * aspect + # Increase either the width or height, depending on the view size + if maintain_aspect: + if aspect < canvas_aspect: + width *= canvas_aspect / aspect + else: + height *= aspect / canvas_aspect + # Calculate bounds + top = +0.5 * height + bottom = -0.5 * height + left = -0.5 * width + right = +0.5 * width + # Set matrices + projection_matrix = la.mat_perspective( + left, right, top, bottom, near, far, depth_range=(0, 1) + ) + + else: + # The reference view plane is scaled with the zoom factor + width = view_width / zoom_factor + height = view_height / zoom_factor + # Increase either the width or height, depending on the viewport shape + aspect = width / height + if maintain_aspect: + if aspect < canvas_aspect: + width *= canvas_aspect / aspect + else: + height *= aspect / canvas_aspect + # Calculate bounds + bottom = -0.5 * height + top = +0.5 * height + left = -0.5 * width + right = +0.5 * width + # Set matrices + projection_matrix = la.mat_orthographic( + left, right, top, bottom, near, far, depth_range=(0, 1) + ) + + projection_matrix.flags.writeable = False + return Transform(root=Matrix3D(projection_matrix)) + + +def _get_near_and_far_plane(fov: float, depth: float) -> tuple[float, float]: + if fov > 0: + # Scale near plane with the fov to compensate for the fact that with very small + # fov you're probably looking at something in the far distance. + f = _fov_distance_factor(fov) + # We want to be gentle with the factor for the near plane; making that value + # small will cost a lot of bits in the depth buffer. The value for the far + # buffer affects the precision near the camera much less. + return depth * f / 100, depth * 10000 + else: + # Look behind and in front in equal distance. + # With a fov of 0, the depth precision is divided equally over the whole range. + # So being able to look far in the distance, is *much* more costly than it is + # for perspective projection. With a factor 100, you can zoom out until the + # scene is just a few pixels before it disappears. + return (-100 * depth, +100 * depth) + + +def _fov_distance_factor(fov: float) -> float: + # It's important that controller and camera use the same distance calculations + if fov > 0: + fov_rad = fov * pi / 180 + factor = 0.5 / tan(0.5 * fov_rad) + else: + factor = 1.0 + return factor From f7b57e660499e62717812a1789b1265a45eb130e Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 14 Jul 2025 09:53:03 -0500 Subject: [PATCH 003/120] Remove zoom and center In the pursuit of a single source of truth, let's resort to the projection matrix (when/if possible?) for this. --- src/scenex/adaptors/_base.py | 4 ---- src/scenex/adaptors/_pygfx/_camera.py | 7 ------- src/scenex/adaptors/_vispy/_camera.py | 6 ------ src/scenex/model/_nodes/camera.py | 4 ---- 4 files changed, 21 deletions(-) diff --git a/src/scenex/adaptors/_base.py b/src/scenex/adaptors/_base.py index ba3e99ee..1c7dc48c 100644 --- a/src/scenex/adaptors/_base.py +++ b/src/scenex/adaptors/_base.py @@ -116,10 +116,6 @@ class CameraAdaptor(NodeAdaptor[TCamera, TNative]): @abstractmethod def _snx_set_type(self, arg: model.CameraType, /) -> None: ... @abstractmethod - def _snx_set_zoom(self, arg: float, /) -> None: ... - @abstractmethod - def _snx_set_center(self, arg: tuple[float, ...], /) -> None: ... - @abstractmethod def _snx_zoom_to_fit(self, arg: float, /) -> None: ... diff --git a/src/scenex/adaptors/_pygfx/_camera.py b/src/scenex/adaptors/_pygfx/_camera.py index cab8fc9e..666a1872 100644 --- a/src/scenex/adaptors/_pygfx/_camera.py +++ b/src/scenex/adaptors/_pygfx/_camera.py @@ -36,12 +36,6 @@ def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: self._pygfx_node.local.scale_y = -1 # don't think this is working... - def _snx_set_zoom(self, zoom: float) -> None: - logger.warning("'Camera._snx_set_zoom' not implemented for pygfx") - - def _snx_set_center(self, arg: tuple[float, ...]) -> None: - logger.warning("'Camera._snx_set_center' not implemented for pygfx") - def _snx_set_type(self, arg: model.CameraType) -> None: logger.warning("'Camera._snx_set_type' not implemented for pygfx") @@ -82,7 +76,6 @@ def _snx_zoom_to_fit(self, margin: float) -> None: height = 1 cam.width = width cam.height = height - self._camera_model.center = tuple(np.mean(bb, axis=0)) cam.zoom = 1 - margin # FIXME: Pyright self._camera_model.transform = cam.local.matrix.T # pyright: ignore[reportAttributeAccessIssue] diff --git a/src/scenex/adaptors/_vispy/_camera.py b/src/scenex/adaptors/_vispy/_camera.py index 9edb283b..456232a6 100644 --- a/src/scenex/adaptors/_vispy/_camera.py +++ b/src/scenex/adaptors/_vispy/_camera.py @@ -50,12 +50,6 @@ def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: self._snx_zoom_to_fit(0.1) - def _snx_set_zoom(self, zoom: float) -> None: - self._vispy_node.zoom_factor = zoom - - def _snx_set_center(self, arg: tuple[float, ...]) -> None: - self._vispy_node.center = arg - def _snx_set_type(self, arg: model.CameraType) -> None: raise NotImplementedError() diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index 06ca085b..f62b5b6e 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -36,10 +36,6 @@ class Camera(Node): description="Whether the camera responds to user interaction, " "such as mouse and keyboard events.", ) - zoom: float = Field(default=1.0, description="Zoom factor of the camera.") - center: Position = Field( - default=(0, 0, 0), description="Center position of the view." - ) projection: Transform = Field( default_factory=Transform, description="Describes how 3D points are mapped to a 2D canvas", From fb48e04aaa8eeb8224c4d8b80ad97d32ea387c85 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 14 Jul 2025 10:34:27 -0500 Subject: [PATCH 004/120] Add projection setter to Camera adapter --- src/scenex/adaptors/_base.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/scenex/adaptors/_base.py b/src/scenex/adaptors/_base.py index 1c7dc48c..495662fa 100644 --- a/src/scenex/adaptors/_base.py +++ b/src/scenex/adaptors/_base.py @@ -117,6 +117,8 @@ class CameraAdaptor(NodeAdaptor[TCamera, TNative]): def _snx_set_type(self, arg: model.CameraType, /) -> None: ... @abstractmethod def _snx_zoom_to_fit(self, arg: float, /) -> None: ... + @abstractmethod + def _snx_set_projection(self, arg: model.Transform, /) -> None: ... class ImageAdaptor(NodeAdaptor[TImage, TNative]): From 244282ae432003f52c24e83151ef3574f78ecabe Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 14 Jul 2025 11:13:57 -0500 Subject: [PATCH 005/120] perspective: Fix Transform construction --- src/scenex/utils/projections.py | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index e708ff47..800b6ea0 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -73,6 +73,8 @@ def perspective( projection: Transform A Transform matrix creating an orthographic camera view """ + matrix = Matrix3D((4, 4)) + near, far = _get_near_and_far_plane(fov, depth) # if self._view_offset is not None: @@ -100,7 +102,7 @@ def perspective( right = +0.5 * width # Set matrices projection_matrix = la.mat_perspective( - left, right, top, bottom, near, far, depth_range=(0, 1) + left, right, top, bottom, near, far, depth_range=(0, 1), out=matrix ) else: @@ -121,11 +123,11 @@ def perspective( right = +0.5 * width # Set matrices projection_matrix = la.mat_orthographic( - left, right, top, bottom, near, far, depth_range=(0, 1) + left, right, top, bottom, near, far, depth_range=(0, 1), out=matrix ) projection_matrix.flags.writeable = False - return Transform(root=Matrix3D(projection_matrix)) + return Transform(matrix) def _get_near_and_far_plane(fov: float, depth: float) -> tuple[float, float]: From 7d63ca4ad2da82437b25979b4ac67207748a2964 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 14 Jul 2025 12:20:55 -0500 Subject: [PATCH 006/120] Copy clims between render materials --- src/scenex/adaptors/_pygfx/_volume.py | 1 + 1 file changed, 1 insertion(+) diff --git a/src/scenex/adaptors/_pygfx/_volume.py b/src/scenex/adaptors/_pygfx/_volume.py index 91e7ba79..2217c309 100644 --- a/src/scenex/adaptors/_pygfx/_volume.py +++ b/src/scenex/adaptors/_pygfx/_volume.py @@ -67,6 +67,7 @@ def _snx_set_render_mode( kwargs["interpolation"] = interpolation elif self._material is not None: kwargs["interpolation"] = self._material.interpolation + kwargs["clim"] = self._material.clim if data == "mip": self._material = pygfx.VolumeMipMaterial(**kwargs) From 0363267e0025f2d294b7de495f68389c7ed6a707 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 14 Jul 2025 13:06:44 -0500 Subject: [PATCH 007/120] Test orthographic projection matrices --- src/scenex/utils/projections.py | 23 +++++++------ tests/utils/test_projections.py | 57 +++++++++++++++++++++++++++++++++ 2 files changed, 71 insertions(+), 9 deletions(-) create mode 100644 tests/utils/test_projections.py diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 800b6ea0..c439ca40 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -7,25 +7,30 @@ from scenex.model._transform import Matrix3D, Transform -def orthographic( - width: float, - height: float, -) -> Transform: +def orthographic(width: float = 2, height: float = 2, depth: float = 2) -> Transform: """Creates an orthographic projection matrix. + Note that the resulting projection matrix provides no positional offset; this would + be out of scope, as such is the job of a camera's transform parameter. + Parameters ---------- - width: float - The width of the camera rectangle - height: float - The height of the camera rectangle + width: float, optional + The width of the camera rectangle. Default 2 (mirroring the side length of a + unit cube). + height: float, optional + The height of the camera rectangle. Default 2 (mirroring the side length of a + unit cube). + depth: float, optional + The depth of the camera rectangle. Default 2 (mirroring the side length of a + unit cube). Returns ------- projection: Transform A Transform matrix creating an orthographic camera view """ - return Transform().scaled((2 / width, 2 / height, 1)) + return Transform().scaled((2 / width, 2 / height, -2 / depth)) def perspective( diff --git a/tests/utils/test_projections.py b/tests/utils/test_projections.py new file mode 100644 index 00000000..7ee8a3f9 --- /dev/null +++ b/tests/utils/test_projections.py @@ -0,0 +1,57 @@ +import numpy as np +from pylinalg import vec_unproject + +from scenex.utils.projections import orthographic + +CORNERS = np.asarray( + [ + [-1, -1], + [-1, 1], + [1, -1], + [1, 1], + ] +) + + +def test_orthographic() -> None: + """Smoke testing the orthographic matrix""" + # By default, the return should unproject NDCs to a depth-inverted unit cube + exp_mat = np.asarray( + [ + [1, 0, 0, 0], + [0, 1, 0, 0], + [0, 0, -1, 0], + [0, 0, 0, 1], + ] + ) + act_mat = orthographic() + assert np.array_equal(exp_mat, act_mat) + exp_corners = np.asarray( + [ + [-1, -1, 0], + [-1, 1, 0], + [1, -1, 0], + [1, 1, 0], + ] + ) + assert np.array_equal(exp_corners, vec_unproject(CORNERS, act_mat)) + + # Scales inversely w.r.t. width, height, depth + exp_mat = np.asarray( + [ + [2 / 3, 0, 0, 0], + [0, 2, 0, 0], + [0, 0, -2 / 5, 0], + [0, 0, 0, 1], + ] + ) + act_mat = orthographic(3, 4, 5) # Cube with width 3, height 4, depth 5 in view + exp_corners = np.asarray( + [ + [-1.5, -2, 0], + [-1.5, 2, 0], + [1.5, -2, 0], + [1.5, 2, 0], + ] + ) + assert np.array_equal(exp_corners, vec_unproject(CORNERS, act_mat)) From 2ef5f0b7e3f2982c5fbb5dcd76c6f00abf7e6c8a Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 14 Jul 2025 17:11:06 -0500 Subject: [PATCH 008/120] Improve perspective transforms --- examples/camera_projection.py | 20 ++- src/scenex/utils/projections.py | 242 ++++++++++++++++++-------------- tests/utils/test_projections.py | 40 +++++- 3 files changed, 187 insertions(+), 115 deletions(-) diff --git a/examples/camera_projection.py b/examples/camera_projection.py index 50b849e8..20d72b6b 100644 --- a/examples/camera_projection.py +++ b/examples/camera_projection.py @@ -1,3 +1,5 @@ +from math import atan, pi + import numpy as np import scenex as snx @@ -22,27 +24,23 @@ ), ] ), - # camera=snx.Camera(type="perspective"), ) -# both are optional, just for example -snx.use("pygfx") -# snx.use("vispy") - canvas = snx.show(view) -view.camera.transform = Transform().translated((127.5, 127.5, 228)) +view.camera.transform = Transform().translated((127.5, 127.5, 300)) # view.camera.projection = projections.orthographic( # 1.1 * data.shape[0], # 1.1 *data.shape[1] # ) + +near = 300 +fov = 2 * atan(data.shape[1] / 2 / 299.5) * 180 / pi view.camera.projection = projections.perspective( - zoom_factor=0.9, - fov=70, - view_width=view.layout.size[0], - view_height=view.layout.size[1], - depth=366.9768, + fov=fov, + near=near, + far=1_000_000, # Just need something big ) snx.run() diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index c439ca40..3c243a78 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -2,8 +2,6 @@ from math import pi, tan -import pylinalg as la - from scenex.model._transform import Matrix3D, Transform @@ -33,106 +31,106 @@ def orthographic(width: float = 2, height: float = 2, depth: float = 2) -> Trans return Transform().scaled((2 / width, 2 / height, -2 / depth)) -def perspective( - zoom_factor: float, - fov: float, - view_width: float, - view_height: float, - depth: float, - aspect: float = 1.0, - maintain_aspect: bool = True, - canvas_aspect: float = 1.0, -) -> Transform: - """Creates a perspective projection matrix. - - Derived from - https://github.com/pygfx/pygfx/blob/e5d918c010f0de1168aefe309f9cc9279851a9b4/pygfx/cameras/_perspective.py#L348 - - TODO: Explain this code. This reference may contain the information necessary: - https://www.scratchapixel.com/lessons/3d-basic-rendering/3d-viewing-pinhole-camera/virtual-pinhole-camera-model.html - - Parameters - ---------- - zoom_factor: float - TODO - fov: float - Controls how much of the scene is viewed. - view_width: float - TODO - view_height: float - TODO - TODO: Consider passing the view model through instead of these parameters - depth: float - TODO - aspect: float - Frustum aspect radio (width / height) - maintain_aspect: bool = True - Whether to conform to the aspect ratio of the canvas if it differs from the - aspect ratio of the frustum. Default True - canvas_aspect: float - Canvas aspect ratio - TODO: Can't we just pass one of the two through? - - Returns - ------- - projection: Transform - A Transform matrix creating an orthographic camera view - """ - matrix = Matrix3D((4, 4)) - - near, far = _get_near_and_far_plane(fov, depth) - - # if self._view_offset is not None: - # # The view_offset should override the aspect, via its full (virtual) size - # view_aspect = ( - # self._view_offset["full_width"] / self._view_offset["full_height"] - # ) - - if fov > 0: - # Get the reference width / height - size = 2 * near * tan(pi / 180 * 0.5 * fov) / zoom_factor - # Pre-apply the reference aspect ratio - height = 2 * size / (1 + aspect) - width = height * aspect - # Increase either the width or height, depending on the view size - if maintain_aspect: - if aspect < canvas_aspect: - width *= canvas_aspect / aspect - else: - height *= aspect / canvas_aspect - # Calculate bounds - top = +0.5 * height - bottom = -0.5 * height - left = -0.5 * width - right = +0.5 * width - # Set matrices - projection_matrix = la.mat_perspective( - left, right, top, bottom, near, far, depth_range=(0, 1), out=matrix - ) - - else: - # The reference view plane is scaled with the zoom factor - width = view_width / zoom_factor - height = view_height / zoom_factor - # Increase either the width or height, depending on the viewport shape - aspect = width / height - if maintain_aspect: - if aspect < canvas_aspect: - width *= canvas_aspect / aspect - else: - height *= aspect / canvas_aspect - # Calculate bounds - bottom = -0.5 * height - top = +0.5 * height - left = -0.5 * width - right = +0.5 * width - # Set matrices - projection_matrix = la.mat_orthographic( - left, right, top, bottom, near, far, depth_range=(0, 1), out=matrix - ) - - projection_matrix.flags.writeable = False - return Transform(matrix) +# def perspective( +# zoom_factor: float, +# fov: float, +# view_width: float, +# view_height: float, +# depth: float, +# aspect: float = 1.0, +# maintain_aspect: bool = True, +# canvas_aspect: float = 1.0, +# ) -> Transform: +# """Creates a perspective projection matrix. + +# Derived from +# https://github.com/pygfx/pygfx/blob/e5d918c010f0de1168aefe309f9cc9279851a9b4/pygfx/cameras/_perspective.py#L348 + +# TODO: Explain this code. This reference may contain the information necessary: +# https://www.scratchapixel.com/lessons/3d-basic-rendering/3d-viewing-pinhole-camera/virtual-pinhole-camera-model.html + +# Parameters +# ---------- +# zoom_factor: float +# TODO +# fov: float +# Controls how much of the scene is viewed. +# view_width: float +# TODO +# view_height: float +# TODO +# TODO: Consider passing the view model through instead of these parameters +# depth: float +# TODO +# aspect: float +# Frustum aspect radio (width / height) +# maintain_aspect: bool = True +# Whether to conform to the aspect ratio of the canvas if it differs from the +# aspect ratio of the frustum. Default True +# canvas_aspect: float +# Canvas aspect ratio +# TODO: Can't we just pass one of the two through? + +# Returns +# ------- +# projection: Transform +# A Transform matrix creating an orthographic camera view +# """ +# matrix = Matrix3D((4, 4)) + +# near, far = _get_near_and_far_plane(fov, depth) + +# # if self._view_offset is not None: +# # # The view_offset should override the aspect, via its full (virtual) size +# # view_aspect = ( +# # self._view_offset["full_width"] / self._view_offset["full_height"] +# # ) + +# if fov > 0: +# # Get the reference width / height +# size = 2 * near * tan(pi / 180 * 0.5 * fov) / zoom_factor +# # Pre-apply the reference aspect ratio +# height = 2 * size / (1 + aspect) +# width = height * aspect +# # Increase either the width or height, depending on the view size +# if maintain_aspect: +# if aspect < canvas_aspect: +# width *= canvas_aspect / aspect +# else: +# height *= aspect / canvas_aspect +# # Calculate bounds +# top = +0.5 * height +# bottom = -0.5 * height +# left = -0.5 * width +# right = +0.5 * width +# # Set matrices +# projection_matrix = la.mat_perspective( +# left, right, top, bottom, near, far, depth_range=(0, 1), out=matrix +# ) + +# else: +# # The reference view plane is scaled with the zoom factor +# width = view_width / zoom_factor +# height = view_height / zoom_factor +# # Increase either the width or height, depending on the viewport shape +# aspect = width / height +# if maintain_aspect: +# if aspect < canvas_aspect: +# width *= canvas_aspect / aspect +# else: +# height *= aspect / canvas_aspect +# # Calculate bounds +# bottom = -0.5 * height +# top = +0.5 * height +# left = -0.5 * width +# right = +0.5 * width +# # Set matrices +# projection_matrix = la.mat_orthographic( +# left, right, top, bottom, near, far, depth_range=(0, 1), out=matrix +# ) + +# projection_matrix.flags.writeable = False +# return Transform(matrix) def _get_near_and_far_plane(fov: float, depth: float) -> tuple[float, float]: @@ -161,3 +159,43 @@ def _fov_distance_factor(fov: float) -> float: else: factor = 1.0 return factor + + +def perspective(fov: float, near: float, far: float) -> Transform: + """Creates a perspective projection matrix. + + Note that the resulting projection matrix provides no positional offset; this would + be out of scope, as such is the job of a camera's transform parameter. + + Parameters + ---------- + fov: float + The field of view of the camera rectangle. + near: float + The distance from the camera to the near clipping plane. + far: float + The distance from the camera to the far clipping plane. + + Returns + ------- + projection: Transform + A Transform matrix creating a perspective camera view + """ + if fov == 0: + raise ValueError( + "Perspective matrices require fov>0. Maybe consider an orthographic matrix?" + ) + + matrix = Matrix3D((4, 4)) + + scaling_factor = 1 / (tan(fov / 2 * pi / 180)) + matrix[0, 0] = scaling_factor + matrix[1, 1] = scaling_factor + + z_scale = -1 * far / (far - near) + matrix[2, 2] = z_scale + z_translation = -1 * far * near / (far - near) + matrix[2, 3] = z_translation + + matrix[3, 2] = -1 + return Transform(matrix) diff --git a/tests/utils/test_projections.py b/tests/utils/test_projections.py index 7ee8a3f9..342a5227 100644 --- a/tests/utils/test_projections.py +++ b/tests/utils/test_projections.py @@ -1,7 +1,8 @@ import numpy as np from pylinalg import vec_unproject -from scenex.utils.projections import orthographic +from scenex.model._transform import Transform +from scenex.utils.projections import orthographic, perspective CORNERS = np.asarray( [ @@ -14,7 +15,7 @@ def test_orthographic() -> None: - """Smoke testing the orthographic matrix""" + """Basic tests for the orthographic projection matrix constructor""" # By default, the return should unproject NDCs to a depth-inverted unit cube exp_mat = np.asarray( [ @@ -55,3 +56,38 @@ def test_orthographic() -> None: ] ) assert np.array_equal(exp_corners, vec_unproject(CORNERS, act_mat)) + + +def test_projection() -> None: + """Smoke testing the perspective matrix""" + fov = 90 + depth_to_near = 300 + depth_to_far = 1e6 # Just need something really big + + mat = perspective(fov, depth_to_near, depth_to_far) + + exp_mat = np.asarray( + [ + [1, 0, 0, 0], + [0, 1, 0, 0], + [0, 0, -1, -300], + [0, 0, -1, 0], + ] + ) + + # Note the z-offset is like 300.09. Might be rounding errors? + assert np.allclose(exp_mat, mat, rtol=1e-3) + + def _project(mat: Transform, world_pos: tuple[float, float, float]) -> np.ndarray: + # Inverting the behavior of vec_unproject + proj = np.dot(mat.root, np.asarray((*world_pos, 1))) + return proj[:3] / proj[3] # type: ignore + + # Test a near frustum corner maps to a canvas corner + # Note that by convention positive z points away from the scene. + assert np.allclose(np.asarray((1, 1)), _project(mat, (300, 300, -300))) + # Test a far frustum corner maps to a canvas corner + assert np.allclose(np.asarray((1, 1)), _project(mat, (360, 360, -360))) + # Test a near frustum corner, TRANSLATED back in the scene, does not map to a corner + # This point models the back face of a volume + assert np.allclose(np.asarray((5 / 6, 5 / 6)), _project(mat, (300, 300, -360))) From ee65c56409080345f9bfeaed8cfdf118c6c3a028 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 14 Jul 2025 17:25:47 -0500 Subject: [PATCH 009/120] Minor fixes --- src/scenex/utils/projections.py | 2 ++ tests/utils/test_projections.py | 6 +++--- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 3c243a78..8ab06542 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -188,6 +188,8 @@ def perspective(fov: float, near: float, far: float) -> Transform: matrix = Matrix3D((4, 4)) + # Computations derived from + # https://www.scratchapixel.com/lessons/3d-basic-rendering/perspective-and-orthographic-projection-matrix/building-basic-perspective-projection-matrix.html scaling_factor = 1 / (tan(fov / 2 * pi / 180)) matrix[0, 0] = scaling_factor matrix[1, 1] = scaling_factor diff --git a/tests/utils/test_projections.py b/tests/utils/test_projections.py index 342a5227..e8c53cdb 100644 --- a/tests/utils/test_projections.py +++ b/tests/utils/test_projections.py @@ -59,7 +59,7 @@ def test_orthographic() -> None: def test_projection() -> None: - """Smoke testing the perspective matrix""" + """Basic testing of the perspective matrix""" fov = 90 depth_to_near = 300 depth_to_far = 1e6 # Just need something really big @@ -76,12 +76,12 @@ def test_projection() -> None: ) # Note the z-offset is like 300.09. Might be rounding errors? - assert np.allclose(exp_mat, mat, rtol=1e-3) + assert np.allclose(exp_mat, mat, rtol=1e-1) def _project(mat: Transform, world_pos: tuple[float, float, float]) -> np.ndarray: # Inverting the behavior of vec_unproject proj = np.dot(mat.root, np.asarray((*world_pos, 1))) - return proj[:3] / proj[3] # type: ignore + return proj[:2] / proj[3] # type: ignore # Test a near frustum corner maps to a canvas corner # Note that by convention positive z points away from the scene. From ed1bbc0aeeaeede437ae2779d63ed4806a8f22a7 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 14 Jul 2025 17:28:44 -0500 Subject: [PATCH 010/120] HACK: Zero out the perspective matrix For some reason, if I don't do this, the Matrix3D constructor RESURRECTS some previous matrix I used in a previous test --- src/scenex/utils/projections.py | 1 + 1 file changed, 1 insertion(+) diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 8ab06542..51111933 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -187,6 +187,7 @@ def perspective(fov: float, near: float, far: float) -> Transform: ) matrix = Matrix3D((4, 4)) + matrix[:, :] = 0 # Computations derived from # https://www.scratchapixel.com/lessons/3d-basic-rendering/perspective-and-orthographic-projection-matrix/building-basic-perspective-projection-matrix.html From 7a9a2a93acc7ef2204019446b53e9afafed92b33 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 14 Jul 2025 20:34:50 -0500 Subject: [PATCH 011/120] perspective: Don't use Matrix3D --- src/scenex/utils/projections.py | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 51111933..154afcc9 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -1,6 +1,9 @@ """Utilities for creating projection matrices.""" from math import pi, tan +from typing import cast + +import numpy as np from scenex.model._transform import Matrix3D, Transform @@ -186,8 +189,7 @@ def perspective(fov: float, near: float, far: float) -> Transform: "Perspective matrices require fov>0. Maybe consider an orthographic matrix?" ) - matrix = Matrix3D((4, 4)) - matrix[:, :] = 0 + matrix = np.zeros((4, 4)) # Computations derived from # https://www.scratchapixel.com/lessons/3d-basic-rendering/perspective-and-orthographic-projection-matrix/building-basic-perspective-projection-matrix.html @@ -201,4 +203,4 @@ def perspective(fov: float, near: float, far: float) -> Transform: matrix[2, 3] = z_translation matrix[3, 2] = -1 - return Transform(matrix) + return Transform(root=cast("Matrix3D", matrix)) From 09e5b4d08b08d22eacd4fe5efd32001f1450031c Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 14 Jul 2025 20:41:09 -0500 Subject: [PATCH 012/120] Add pylinalg as explicit dependency --- pyproject.toml | 2 +- uv.lock | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/pyproject.toml b/pyproject.toml index 2e84d1cf..d755e046 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -32,7 +32,7 @@ classifiers = [ "Programming Language :: Python :: 3.13", "Typing :: Typed", ] -dependencies = ["cmap>=0.5", "numpy>=1.24", "psygnal>=0.11.1", "pydantic>=2.10"] +dependencies = ["cmap>=0.5", "numpy>=1.24", "psygnal>=0.11.1", "pydantic>=2.10", "pylinalg"] [project.optional-dependencies] pygfx = ["pygfx>=0.9.0"] diff --git a/uv.lock b/uv.lock index e0ae6d40..fd0b34da 100644 --- a/uv.lock +++ b/uv.lock @@ -1937,6 +1937,7 @@ dependencies = [ { name = "numpy", version = "2.3.1", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.11'" }, { name = "psygnal" }, { name = "pydantic" }, + { name = "pylinalg" }, ] [package.optional-dependencies] @@ -1997,6 +1998,7 @@ requires-dist = [ { name = "psygnal", specifier = ">=0.11.1" }, { name = "pydantic", specifier = ">=2.10" }, { name = "pygfx", marker = "extra == 'pygfx'", specifier = ">=0.9.0" }, + { name = "pylinalg" }, { name = "pyopengl", marker = "extra == 'vispy'" }, { name = "vispy", marker = "extra == 'vispy'", specifier = ">=0.15.0" }, ] From 09058cc5eb44fd1af9a7797b02486562a08727eb Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 15 Jul 2025 09:27:32 -0500 Subject: [PATCH 013/120] Transform: Use Annotated for root type Thanks to @tlambert03 for the suggestion. Could probably be cleaned up further, but at least this is a step in the right direction! --- src/scenex/model/_transform.py | 10 +++++----- src/scenex/utils/projections.py | 5 ++--- 2 files changed, 7 insertions(+), 8 deletions(-) diff --git a/src/scenex/model/_transform.py b/src/scenex/model/_transform.py index 2c68b1b5..8a4de357 100644 --- a/src/scenex/model/_transform.py +++ b/src/scenex/model/_transform.py @@ -3,7 +3,7 @@ import functools import math from functools import reduce -from typing import TYPE_CHECKING, Any, ClassVar, cast +from typing import TYPE_CHECKING, Annotated, Any, ClassVar, cast import numpy as np from pydantic import ConfigDict, Field, RootModel @@ -89,8 +89,8 @@ def _serialize(val: np.ndarray) -> list | None: class Transform(RootModel): """A 4x4 transformation matrix placing a 3D object in 3D space.""" - root: Matrix3D = Field( - default_factory=lambda: np.eye(4), # type: ignore + root: Annotated[np.ndarray, Matrix3D] = Field( + default_factory=lambda: np.eye(4), description="4x4 Transformation matrix.", ) @@ -116,7 +116,7 @@ def __matmul__(self, other: Transform | ArrayLike) -> Transform: """Return the dot product of this transform with another.""" if isinstance(other, Transform): other = other.root - return Transform(self.root @ other) # type: ignore + return Transform(self.root @ other) def dot(self, other: Transform | ArrayLike) -> Transform: """Return the dot product of this transform with another.""" @@ -131,7 +131,7 @@ def T(self) -> Transform: def inv(self) -> Transform: """Return the inverse of the transform.""" - return Transform(np.linalg.inv(self.root)) # type: ignore + return Transform(np.linalg.inv(self.root)) def translated(self, pos: ArrayLike) -> Transform: """Return new transform, translated by pos. diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 154afcc9..f26b6a07 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -1,11 +1,10 @@ """Utilities for creating projection matrices.""" from math import pi, tan -from typing import cast import numpy as np -from scenex.model._transform import Matrix3D, Transform +from scenex.model._transform import Transform def orthographic(width: float = 2, height: float = 2, depth: float = 2) -> Transform: @@ -203,4 +202,4 @@ def perspective(fov: float, near: float, far: float) -> Transform: matrix[2, 3] = z_translation matrix[3, 2] = -1 - return Transform(root=cast("Matrix3D", matrix)) + return Transform(root=matrix) From 748679b1a8cbdf3adb4c9f8513803a985f614740 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 15 Jul 2025 16:53:00 -0500 Subject: [PATCH 014/120] Fix projection transform example --- examples/camera_projection.py | 14 ++++++++------ src/scenex/utils/projections.py | 21 +++++++++++++++------ 2 files changed, 23 insertions(+), 12 deletions(-) diff --git a/examples/camera_projection.py b/examples/camera_projection.py index 20d72b6b..bfcca645 100644 --- a/examples/camera_projection.py +++ b/examples/camera_projection.py @@ -28,18 +28,20 @@ canvas = snx.show(view) +# Translate the camera to the center of the volume, and distance the camera from the +# volume in the z dimension (important for perspective transforms) view.camera.transform = Transform().translated((127.5, 127.5, 300)) # view.camera.projection = projections.orthographic( -# 1.1 * data.shape[0], -# 1.1 *data.shape[1] +# 1.1 * data.shape[1], +# 1.1 * data.shape[2], +# 1000, # ) -near = 300 -fov = 2 * atan(data.shape[1] / 2 / 299.5) * 180 / pi view.camera.projection = projections.perspective( - fov=fov, - near=near, + # TODO: Create a helper function for this. + fov=2 * atan(data.shape[1] / 2 / 300) * 180 / pi, + near=300, far=1_000_000, # Just need something big ) diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index f26b6a07..5ce04876 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -13,17 +13,26 @@ def orthographic(width: float = 2, height: float = 2, depth: float = 2) -> Trans Note that the resulting projection matrix provides no positional offset; this would be out of scope, as such is the job of a camera's transform parameter. + TODO: Consider passing bounds (i.e. a tuple[float, float]) for each parameter. + Unfortunately, though, this would effectively allow positional offsets for width and + height. + Parameters ---------- width: float, optional - The width of the camera rectangle. Default 2 (mirroring the side length of a - unit cube). + The width of the camera rectangular prism. Default 2 (mirroring the side length + of a unit cube). height: float, optional - The height of the camera rectangle. Default 2 (mirroring the side length of a - unit cube). + The height of the camera rectangular prism. Default 2 (mirroring the side length + of a unit cube). depth: float, optional - The depth of the camera rectangle. Default 2 (mirroring the side length of a - unit cube). + The depth of the camera rectangular prism. The near and far clipping planes of + the resulting matrix become (-depth / 2) and (depth / 2) respectively. Default + 2, increase (to render things farther away) or decrease (to increase + performance) as needed. + + TODO: Is this a good default? May want to consider some large number (1000?) + instead Returns ------- From 7920d4c717f628c1e80621d30c6dd274d807ac6f Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 16 Jul 2025 15:23:13 -0500 Subject: [PATCH 015/120] vispy projections: Starting to work --- src/scenex/adaptors/_vispy/_camera.py | 70 +++++++++++++--- src/scenex/adaptors/_vispy/_view.py | 3 + src/scenex/model/_nodes/camera.py | 1 + tests/adaptors/_vispy/test_camera.py | 111 ++++++++++++++++++++++++++ 4 files changed, 175 insertions(+), 10 deletions(-) create mode 100644 tests/adaptors/_vispy/test_camera.py diff --git a/src/scenex/adaptors/_vispy/_camera.py b/src/scenex/adaptors/_vispy/_camera.py index 456232a6..213d9f04 100644 --- a/src/scenex/adaptors/_vispy/_camera.py +++ b/src/scenex/adaptors/_vispy/_camera.py @@ -38,10 +38,28 @@ class Camera(Node, CameraAdaptor): def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: self._camera_model = camera + + # The camera model contains: + # A projection transform, mapping local space to NDC + # A parent transform, mapping parent space to local space + # + # TODO: We may need a utility to get a transform mapping world space to local + # space. + # + # The BaseCamera.transform field should map world space to canvas position. + # + # To construct this transform from our camera model, we need: + # 1) A transform from world space to local space (self._camera_model.transform) + self._transform = Transform() + # 2) A transform from local space to NDC (self._camera_model.projection) + self._projection = Transform() + # 3) A transform from NDC to canvas position: + self._from_NDC = Transform() + if camera.type == "panzoom": - self._vispy_node = vispy.scene.PanZoomCamera() + self._vispy_node = vispy.scene.BaseCamera() self._vispy_node.flip = (False, True, False) - self._vispy_node.interactive = True + # self._vispy_node.interactive = True elif camera.type == "perspective": # TODO: These settings were copied from the pygfx camera. # Unify these values? @@ -50,17 +68,49 @@ def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: self._snx_zoom_to_fit(0.1) + def _set_view(self, view: vispy.scene.ViewBox) -> None: + # map [-1, -1] to [0, 0] + # map [1, 1] to [w, h] + w, h = view.size + self._from_NDC = Transform().translated((1, 1)).scaled((w / 2, h / 2, 1)) + # TODO: Delete + # cam = vispy.scene.PanZoomCamera() + # cam.flip = [False, True, False] + # v = vispy.scene.ViewBox(cam) + # c = cam.transform.as_matrix() + # t = Transform().translated((-0.5, -0.5)) + # p = projections.orthographic(1, 1, 2_000_000) + # c_rep = t @ p @ self._from_NDC + self._update_vispy_node_tform() + return None + def _snx_set_type(self, arg: model.CameraType) -> None: raise NotImplementedError() def _snx_set_transform(self, arg: Transform) -> None: + # The vispy camera's transformation matrix maps [0, 0] to the top left corner of + # the camera. Since the model transform maps [0, 0] to the CENTER of the camera, + # we have to offset the transform + # offset_mat = self._camera_model.projection + # offset = offset_mat.imap((-1, -1)) - offset_mat.imap((0, 0)) + self._transform = arg.inv() + self._update_vispy_node_tform() # FIXME: Handle scaling # FIXME: Y-panning inverted? - self._vispy_node.center = tuple(arg.root[3, :3]) + # self._vispy_node.center = tuple(arg.root[3, :3]) def _snx_set_projection(self, arg: Transform) -> None: - pass - # self._pygfx_node.projection_matrix = arg.root + self._projection = arg + # Have to recompute the vispy transform offset if the projection changed + self._snx_set_transform(self._camera_model.transform) + # FIXME this call is redundant since _snx_set_transform does it, but it's + # worth remembering that this needs to happen. + self._update_vispy_node_tform() + + def _update_vispy_node_tform(self) -> None: + mat = self._transform @ self._projection @ self._from_NDC + self._vispy_node.transform = vispy.scene.transforms.MatrixTransform(mat.root) + self._vispy_node.view_changed() def _view_size(self) -> tuple[float, float] | None: """Return the size of first parent viewbox in pixels.""" @@ -68,7 +118,9 @@ def _view_size(self) -> tuple[float, float] | None: def _snx_zoom_to_fit(self, margin: float) -> None: # reset camera to fit all objects + # FIXME: Implement this code in the model self._vispy_node.set_range(margin=margin) + return vis_tform = self._vispy_node.transform tform = Transform() @@ -86,15 +138,13 @@ def _snx_zoom_to_fit(self, margin: float) -> None: # scenex to world coordinates through the projection and transform matrices. if vb := self._vispy_node.viewbox: w, h = cast("tuple[float, float]", vb.size) - # This transform maps NDC coordinates to canvas position - self._de_NDC = ( - Transform().translated((-w / 2, -h / 2)).scaled((2 / w, 2 / h, 1)).T - ) # This transform maps NDC coordinates to TRANSFORMED world coordinates - tform = self._de_NDC @ tform.T + self._de_NDC = () + tform = self._from_NDC.T @ tform.T untranslated_tform = tform.root.copy() untranslated_tform[:3, 3] = 0.0 self._camera_model.projection = Transform(untranslated_tform) self._camera_model.transform = Transform().translated(self._vispy_node.center) + return diff --git a/src/scenex/adaptors/_vispy/_view.py b/src/scenex/adaptors/_vispy/_view.py index 3a4cfdde..c082cd99 100644 --- a/src/scenex/adaptors/_vispy/_view.py +++ b/src/scenex/adaptors/_vispy/_view.py @@ -85,6 +85,9 @@ def _snx_set_camera(self, cam: model.Camera) -> None: self._vispy_camera = self._cam_adaptor._vispy_node if hasattr(self, "_vispy_viewbox"): self._vispy_viewbox.camera = self._vispy_camera + # Vispy camera transforms need knowledge of viewbox + # (specifically, its size) + self._cam_adaptor._set_view(self._vispy_viewbox) def _draw(self) -> None: self._vispy_viewbox.update() diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index f62b5b6e..e8bfef22 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -36,6 +36,7 @@ class Camera(Node): description="Whether the camera responds to user interaction, " "such as mouse and keyboard events.", ) + # FIXME: Default should be explained. And z-scale should probably be -1 projection: Transform = Field( default_factory=Transform, description="Describes how 3D points are mapped to a 2D canvas", diff --git a/tests/adaptors/_vispy/test_camera.py b/tests/adaptors/_vispy/test_camera.py new file mode 100644 index 00000000..21e23467 --- /dev/null +++ b/tests/adaptors/_vispy/test_camera.py @@ -0,0 +1,111 @@ +from __future__ import annotations + +from typing import TYPE_CHECKING + +import numpy as np +import pytest +from vispy.scene.cameras import BaseCamera + +import scenex as snx +import scenex.adaptors._vispy as adaptors +from scenex.adaptors import get_adaptor_registry +from scenex.model._transform import Transform +from scenex.utils import projections + +if TYPE_CHECKING: + from collections.abc import Generator + + +@pytest.fixture +def camera() -> tuple[snx.Camera, adaptors.Camera]: + model_cam = snx.Camera() + adaptor = get_adaptor_registry().get_adaptor(model_cam, create=True) + assert isinstance(adaptor, adaptors.Camera) + return (model_cam, adaptor) + + +@pytest.fixture +def view_camera() -> Generator[tuple[snx.Camera, adaptors.Camera], None, None]: + view = snx.View(camera=snx.Camera()) + adaptor = get_adaptor_registry().get_adaptor(view.camera, create=True) + get_adaptor_registry().get_adaptor(view, create=True) + assert isinstance(adaptor, adaptors.Camera) + # TODO: Do we need to hold on to a view ref? + yield (view.camera, adaptor) + + +@pytest.fixture +def adaptor(camera: snx.Camera) -> adaptors.Camera: + adaptor = get_adaptor_registry().get_adaptor(camera, create=True) + assert isinstance(adaptor, adaptors.Camera) + return adaptor + + +def test_transform_with_view(view_camera: tuple[snx.Camera, adaptors.Camera]) -> None: + camera, adaptor = view_camera + + node = adaptor._vispy_node + assert isinstance(node, BaseCamera) + # Centered at [0, 0], top left [-1, -1], bottom right [1, 1] + identity_tform = Transform() + assert camera.transform == identity_tform + # Vispy wants to map [-1, -1] to [0, 0] + # Vispy wants to map [1, 1] to [10, 10] + exp_tform_mat = np.asarray( + [ + [5, 0, 0, 0], + [0, 5, 0, 0], + [0, 0, 1, 0], + [5, 5, 0, 1], + ] + ) + assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] + + # Move the camera + camera.transform = Transform().translated((1, 1)) + # Vispy wants to map [0, 0] to [0, 0] + # Vispy wants to map [2, 2] to [10, 10] + exp_tform_mat = np.asarray( + [ + [5, 0, 0, 0], + [0, 5, 0, 0], + [0, 0, 1, 0], + [0, 0, 0, 1], + ] + ) + assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] + + +def test_projection_with_view(view_camera: tuple[snx.Camera, adaptors.Camera]) -> None: + camera, adaptor = view_camera + + node = adaptor._vispy_node + assert isinstance(node, BaseCamera) + # Centered at [0, 0], top left [-1, -1], bottom right [1, 1] + identity_tform = Transform() + assert camera.projection == identity_tform + # Vispy wants to map [-1, -1] to [0, 0] + # Vispy wants to map [1, 1] to [10, 10] + exp_tform_mat = np.asarray( + [ + [5, 0, 0, 0], + [0, 5, 0, 0], + [0, 0, 1, 0], + [5, 5, 0, 1], + ] + ) + assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] + + # Widen the projection matrix + camera.projection = projections.orthographic(4, 4) + # Vispy wants to map [-2, -2] to [0, 0] + # Vispy wants to map [2, 2] to [10, 10] + exp_tform_mat = np.asarray( + [ + [2.5, 0, 0, 0], + [0, 2.5, 0, 0], + [0, 0, -1, 0], + [5, 5, 0, 1], + ] + ) + assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] From 732b9c296cbda967b7ac0e51930dd1b0e3461d63 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 16 Jul 2025 16:28:46 -0500 Subject: [PATCH 016/120] HACK: vispy: Tap into vispy view size computation Eventually, we'll want to compute grids ourselves on the model side, I think, but for now this works --- src/scenex/adaptors/_vispy/_canvas.py | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index 8f0049b8..ea69a444 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -52,7 +52,12 @@ def _draw(self) -> None: self._canvas.update() def _snx_add_view(self, view: model.View) -> None: - self._grid.add_widget(get_adaptor(view)._snx_get_native()) + adaptor = get_adaptor(view) + self._grid.add_widget(adaptor._snx_get_native()) + # HACK: Update size and pass that an existing camera + self._grid._prepare_draw(adaptor._snx_get_native()) + cam_adaptor = get_adaptor(view.camera) + cam_adaptor._set_view(adaptor._vispy_viewbox) # type: ignore def _snx_set_width(self, arg: int) -> None: self._canvas.size = (self._canvas.size[0], arg) From 94fe13fcb4777263c5d8b95c49bfb0152fb059cf Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 16 Jul 2025 17:28:55 -0500 Subject: [PATCH 017/120] Clean up vispy camera class ...man, this feels so good --- src/scenex/adaptors/_vispy/_camera.py | 96 ++++++--------------------- 1 file changed, 19 insertions(+), 77 deletions(-) diff --git a/src/scenex/adaptors/_vispy/_camera.py b/src/scenex/adaptors/_vispy/_camera.py index 213d9f04..f1becd73 100644 --- a/src/scenex/adaptors/_vispy/_camera.py +++ b/src/scenex/adaptors/_vispy/_camera.py @@ -1,8 +1,7 @@ from __future__ import annotations -from typing import TYPE_CHECKING, Any, cast +from typing import TYPE_CHECKING, Any -import numpy as np import vispy.geometry import vispy.scene @@ -15,22 +14,6 @@ from scenex import model -class _Arcball(vispy.scene.ArcballCamera): - def _get_dim_vectors(self) -> tuple[np.ndarray, np.ndarray, np.ndarray]: # pyright: ignore[reportIncompatibleMethodOverride] - return np.array((0, +1, 0)), np.array((0, 0, +1)), np.array((+1, 0, 0)) - # # Specify up and forward vector - # M = {'+z': [(0, 0, +1), (0, 1, 0)], - # '-z': [(0, 0, -1), (0, 1, 0)], - # '+y': [(0, +1, 0), (1, 0, 0)], - # '-y': [(0, -1, 0), (1, 0, 0)], - # '+x': [(+1, 0, 0), (0, 0, 1)], - # '-x': [(-1, 0, 0), (0, 0, 1)], - # } - # up, forward = M[self.up] - # right = np.cross(forward, up) - # return np.array(up), np.array(forward), right - - class Camera(Node, CameraAdaptor): """Adaptor for pygfx camera.""" @@ -49,55 +32,42 @@ def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: # The BaseCamera.transform field should map world space to canvas position. # # To construct this transform from our camera model, we need: - # 1) A transform from world space to local space (self._camera_model.transform) + # 1) A transform from world space to local space: + # Note that this is usually the inverse of the model's transform matrix self._transform = Transform() - # 2) A transform from local space to NDC (self._camera_model.projection) + # 2) A transform from local space to NDC: self._projection = Transform() # 3) A transform from NDC to canvas position: self._from_NDC = Transform() - if camera.type == "panzoom": - self._vispy_node = vispy.scene.BaseCamera() - self._vispy_node.flip = (False, True, False) - # self._vispy_node.interactive = True - elif camera.type == "perspective": - # TODO: These settings were copied from the pygfx camera. - # Unify these values? - self._vispy_node = _Arcball(70) - self._vispy_node.up = "+y" - - self._snx_zoom_to_fit(0.1) + self._vispy_node = vispy.scene.BaseCamera() + # FIXME: Compared to pygfx, the y-axis appears inverted. + # The line below does not help... + # self._vispy_node.flip = (False, True, False) def _set_view(self, view: vispy.scene.ViewBox) -> None: # map [-1, -1] to [0, 0] # map [1, 1] to [w, h] w, h = view.size self._from_NDC = Transform().translated((1, 1)).scaled((w / 2, h / 2, 1)) - # TODO: Delete - # cam = vispy.scene.PanZoomCamera() - # cam.flip = [False, True, False] - # v = vispy.scene.ViewBox(cam) - # c = cam.transform.as_matrix() - # t = Transform().translated((-0.5, -0.5)) - # p = projections.orthographic(1, 1, 2_000_000) - # c_rep = t @ p @ self._from_NDC + self._update_vispy_node_tform() - return None def _snx_set_type(self, arg: model.CameraType) -> None: raise NotImplementedError() def _snx_set_transform(self, arg: Transform) -> None: - # The vispy camera's transformation matrix maps [0, 0] to the top left corner of - # the camera. Since the model transform maps [0, 0] to the CENTER of the camera, - # we have to offset the transform - # offset_mat = self._camera_model.projection - # offset = offset_mat.imap((-1, -1)) - offset_mat.imap((0, 0)) + # Note that the scenex transform is inverted here. + # Scenex transforms map local coordinates into parent coordinates, + # but our vispy node's transform must go the opposite way, from world + # coordinates into parent coordinates. + # + # FIXME: Note the discrepancy between world and parent coordinates. World + # coordinates are needed for the vispy transform node, but the current transform + # only converts local to parent space. This will likely be a source of bugs for + # more complicated scenes. There's also a TODO above about fixing this. self._transform = arg.inv() self._update_vispy_node_tform() - # FIXME: Handle scaling - # FIXME: Y-panning inverted? - # self._vispy_node.center = tuple(arg.root[3, :3]) def _snx_set_projection(self, arg: Transform) -> None: self._projection = arg @@ -108,7 +78,7 @@ def _snx_set_projection(self, arg: Transform) -> None: self._update_vispy_node_tform() def _update_vispy_node_tform(self) -> None: - mat = self._transform @ self._projection @ self._from_NDC + mat = self._transform @ self._projection.T @ self._from_NDC self._vispy_node.transform = vispy.scene.transforms.MatrixTransform(mat.root) self._vispy_node.view_changed() @@ -120,31 +90,3 @@ def _snx_zoom_to_fit(self, margin: float) -> None: # reset camera to fit all objects # FIXME: Implement this code in the model self._vispy_node.set_range(margin=margin) - return - vis_tform = self._vispy_node.transform - - tform = Transform() - if isinstance(vis_tform, vispy.scene.transforms.STTransform): - vis_matrix = cast( - "vispy.scene.transforms.MatrixTransform", vis_tform.as_matrix() - ) - tform = Transform(vis_matrix.matrix) - elif isinstance(vis_tform, vispy.scene.transforms.MatrixTransform): - tform = Transform(vis_tform.matrix) - - # Vispy's camera transforms map canvas coordinates to world coordinates. - # Thus the projection matrix should map NDC coordinates to canvas - # coordinates, to obtain the desired effect of mapping NDC coordinates in - # scenex to world coordinates through the projection and transform matrices. - if vb := self._vispy_node.viewbox: - w, h = cast("tuple[float, float]", vb.size) - # This transform maps NDC coordinates to TRANSFORMED world coordinates - self._de_NDC = () - tform = self._from_NDC.T @ tform.T - - untranslated_tform = tform.root.copy() - untranslated_tform[:3, 3] = 0.0 - self._camera_model.projection = Transform(untranslated_tform) - - self._camera_model.transform = Transform().translated(self._vispy_node.center) - return From 798a787b0e76ba0370199fa0e6d740c0105d3afd Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 16 Jul 2025 18:18:32 -0500 Subject: [PATCH 018/120] Delete obsolete projection code It's worse :) --- src/scenex/utils/projections.py | 130 -------------------------------- 1 file changed, 130 deletions(-) diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 5ce04876..8d245666 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -42,136 +42,6 @@ def orthographic(width: float = 2, height: float = 2, depth: float = 2) -> Trans return Transform().scaled((2 / width, 2 / height, -2 / depth)) -# def perspective( -# zoom_factor: float, -# fov: float, -# view_width: float, -# view_height: float, -# depth: float, -# aspect: float = 1.0, -# maintain_aspect: bool = True, -# canvas_aspect: float = 1.0, -# ) -> Transform: -# """Creates a perspective projection matrix. - -# Derived from -# https://github.com/pygfx/pygfx/blob/e5d918c010f0de1168aefe309f9cc9279851a9b4/pygfx/cameras/_perspective.py#L348 - -# TODO: Explain this code. This reference may contain the information necessary: -# https://www.scratchapixel.com/lessons/3d-basic-rendering/3d-viewing-pinhole-camera/virtual-pinhole-camera-model.html - -# Parameters -# ---------- -# zoom_factor: float -# TODO -# fov: float -# Controls how much of the scene is viewed. -# view_width: float -# TODO -# view_height: float -# TODO -# TODO: Consider passing the view model through instead of these parameters -# depth: float -# TODO -# aspect: float -# Frustum aspect radio (width / height) -# maintain_aspect: bool = True -# Whether to conform to the aspect ratio of the canvas if it differs from the -# aspect ratio of the frustum. Default True -# canvas_aspect: float -# Canvas aspect ratio -# TODO: Can't we just pass one of the two through? - -# Returns -# ------- -# projection: Transform -# A Transform matrix creating an orthographic camera view -# """ -# matrix = Matrix3D((4, 4)) - -# near, far = _get_near_and_far_plane(fov, depth) - -# # if self._view_offset is not None: -# # # The view_offset should override the aspect, via its full (virtual) size -# # view_aspect = ( -# # self._view_offset["full_width"] / self._view_offset["full_height"] -# # ) - -# if fov > 0: -# # Get the reference width / height -# size = 2 * near * tan(pi / 180 * 0.5 * fov) / zoom_factor -# # Pre-apply the reference aspect ratio -# height = 2 * size / (1 + aspect) -# width = height * aspect -# # Increase either the width or height, depending on the view size -# if maintain_aspect: -# if aspect < canvas_aspect: -# width *= canvas_aspect / aspect -# else: -# height *= aspect / canvas_aspect -# # Calculate bounds -# top = +0.5 * height -# bottom = -0.5 * height -# left = -0.5 * width -# right = +0.5 * width -# # Set matrices -# projection_matrix = la.mat_perspective( -# left, right, top, bottom, near, far, depth_range=(0, 1), out=matrix -# ) - -# else: -# # The reference view plane is scaled with the zoom factor -# width = view_width / zoom_factor -# height = view_height / zoom_factor -# # Increase either the width or height, depending on the viewport shape -# aspect = width / height -# if maintain_aspect: -# if aspect < canvas_aspect: -# width *= canvas_aspect / aspect -# else: -# height *= aspect / canvas_aspect -# # Calculate bounds -# bottom = -0.5 * height -# top = +0.5 * height -# left = -0.5 * width -# right = +0.5 * width -# # Set matrices -# projection_matrix = la.mat_orthographic( -# left, right, top, bottom, near, far, depth_range=(0, 1), out=matrix -# ) - -# projection_matrix.flags.writeable = False -# return Transform(matrix) - - -def _get_near_and_far_plane(fov: float, depth: float) -> tuple[float, float]: - if fov > 0: - # Scale near plane with the fov to compensate for the fact that with very small - # fov you're probably looking at something in the far distance. - f = _fov_distance_factor(fov) - # We want to be gentle with the factor for the near plane; making that value - # small will cost a lot of bits in the depth buffer. The value for the far - # buffer affects the precision near the camera much less. - return depth * f / 100, depth * 10000 - else: - # Look behind and in front in equal distance. - # With a fov of 0, the depth precision is divided equally over the whole range. - # So being able to look far in the distance, is *much* more costly than it is - # for perspective projection. With a factor 100, you can zoom out until the - # scene is just a few pixels before it disappears. - return (-100 * depth, +100 * depth) - - -def _fov_distance_factor(fov: float) -> float: - # It's important that controller and camera use the same distance calculations - if fov > 0: - fov_rad = fov * pi / 180 - factor = 0.5 / tan(0.5 * fov_rad) - else: - factor = 1.0 - return factor - - def perspective(fov: float, near: float, far: float) -> Transform: """Creates a perspective projection matrix. From 2ca7ca69b0e437ca68bc20011731b0e7c84e3052 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 16 Jul 2025 18:35:19 -0500 Subject: [PATCH 019/120] Fix typo --- src/scenex/adaptors/_vispy/_canvas.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index ea69a444..05d298a2 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -54,7 +54,7 @@ def _draw(self) -> None: def _snx_add_view(self, view: model.View) -> None: adaptor = get_adaptor(view) self._grid.add_widget(adaptor._snx_get_native()) - # HACK: Update size and pass that an existing camera + # HACK: Update view size by passing the existing camera self._grid._prepare_draw(adaptor._snx_get_native()) cam_adaptor = get_adaptor(view.camera) cam_adaptor._set_view(adaptor._vispy_viewbox) # type: ignore From 336a1394e73676760220de1b31a381e1fe765ec7 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 17 Jul 2025 10:23:17 -0500 Subject: [PATCH 020/120] Remove camera type from model Notably, this limits the type of pygfx-specific interaction available. But we need a scenex version of this anyways - planning to implement the beginnings of this with events --- examples/basic_volume.py | 12 +++++++++++- src/scenex/adaptors/_pygfx/_camera.py | 12 +++++------- src/scenex/model/_nodes/camera.py | 1 - 3 files changed, 16 insertions(+), 9 deletions(-) diff --git a/examples/basic_volume.py b/examples/basic_volume.py index b2a2ea06..5bce1001 100644 --- a/examples/basic_volume.py +++ b/examples/basic_volume.py @@ -1,6 +1,8 @@ import numpy as np import scenex as snx +from scenex.model._transform import Transform +from scenex.utils import projections try: from imageio.v2 import volread @@ -20,8 +22,16 @@ ), ] ), - camera=snx.Camera(type="perspective"), ) snx.show(view) + +# FIXME: Add a model-based "look at"/"zoom to fit" +view.camera.transform = Transform().translated((127.5, 127.5, 300)) +view.camera.projection = projections.perspective( + fov=70, + near=300, + far=1_000_000, # Just need something big +) + snx.run() diff --git a/src/scenex/adaptors/_pygfx/_camera.py b/src/scenex/adaptors/_pygfx/_camera.py index 666a1872..54471a17 100644 --- a/src/scenex/adaptors/_pygfx/_camera.py +++ b/src/scenex/adaptors/_pygfx/_camera.py @@ -26,13 +26,11 @@ class Camera(Node, CameraAdaptor): def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: self._camera_model = camera - if camera.type == "panzoom": - self._pygfx_node = pygfx.OrthographicCamera() - self.pygfx_controller = pygfx.PanZoomController(self._pygfx_node) - elif camera.type == "perspective": - # this type ignore is because PerspectiveCamera lacks hints - self._pygfx_node = pygfx.PerspectiveCamera(70, 4 / 3) # pyright: ignore reportArgumentType] - self.pygfx_controller = pygfx.OrbitController(self._pygfx_node) + # FIXME: This won't always hold as the projection matrix changes. + # Once we have better controllers via event filters, the pygfx_controller + # field should disappear and the _pygfx_node should just be a pygfx.Camera. + self._pygfx_node = pygfx.OrthographicCamera() + self.pygfx_controller = pygfx.PanZoomController(self._pygfx_node) self._pygfx_node.local.scale_y = -1 # don't think this is working... diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index e8bfef22..993248f5 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -30,7 +30,6 @@ class Camera(Node): node_type: Literal["camera"] = "camera" - type: CameraType = Field(default="panzoom", description="Camera type.") interactive: bool = Field( default=True, description="Whether the camera responds to user interaction, " From 8f9169978ce328eb04841f5bb736f27cdc312daf Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 17 Jul 2025 11:31:07 -0500 Subject: [PATCH 021/120] Update default projection matrices --- src/scenex/model/_nodes/camera.py | 13 ++++++++----- src/scenex/utils/projections.py | 8 ++++---- tests/adaptors/_vispy/test_camera.py | 9 ++++----- tests/utils/test_projections.py | 14 +++++++------- 4 files changed, 23 insertions(+), 21 deletions(-) diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index 993248f5..0ccecb57 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -1,13 +1,16 @@ from __future__ import annotations -from typing import Literal +from typing import TYPE_CHECKING, Literal from pydantic import Field -from scenex.model._transform import Transform +from scenex.utils import projections from .node import Node +if TYPE_CHECKING: + from scenex.model._transform import Transform + CameraType = Literal["panzoom", "perspective"] Position2D = tuple[float, float] Position3D = tuple[float, float, float] @@ -35,8 +38,8 @@ class Camera(Node): description="Whether the camera responds to user interaction, " "such as mouse and keyboard events.", ) - # FIXME: Default should be explained. And z-scale should probably be -1 projection: Transform = Field( - default_factory=Transform, - description="Describes how 3D points are mapped to a 2D canvas", + default_factory=lambda: projections.orthographic(1, 1, 1), + description="Describes how 3D points are mapped to a 2D canvas, " + "default is an orthographic projection of a unit cube, centered at (0, 0, 0)", ) diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 8d245666..5c19e9a1 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -7,7 +7,7 @@ from scenex.model._transform import Transform -def orthographic(width: float = 2, height: float = 2, depth: float = 2) -> Transform: +def orthographic(width: float = 1, height: float = 1, depth: float = 1) -> Transform: """Creates an orthographic projection matrix. Note that the resulting projection matrix provides no positional offset; this would @@ -20,15 +20,15 @@ def orthographic(width: float = 2, height: float = 2, depth: float = 2) -> Trans Parameters ---------- width: float, optional - The width of the camera rectangular prism. Default 2 (mirroring the side length + The width of the camera rectangular prism. Default 1 (mirroring the side length of a unit cube). height: float, optional - The height of the camera rectangular prism. Default 2 (mirroring the side length + The height of the camera rectangular prism. Default 1 (mirroring the side length of a unit cube). depth: float, optional The depth of the camera rectangular prism. The near and far clipping planes of the resulting matrix become (-depth / 2) and (depth / 2) respectively. Default - 2, increase (to render things farther away) or decrease (to increase + 1, increase (to render things farther away) or decrease (to increase performance) as needed. TODO: Is this a good default? May want to consider some large number (1000?) diff --git a/tests/adaptors/_vispy/test_camera.py b/tests/adaptors/_vispy/test_camera.py index 21e23467..5f4f3eaa 100644 --- a/tests/adaptors/_vispy/test_camera.py +++ b/tests/adaptors/_vispy/test_camera.py @@ -55,7 +55,7 @@ def test_transform_with_view(view_camera: tuple[snx.Camera, adaptors.Camera]) -> [ [5, 0, 0, 0], [0, 5, 0, 0], - [0, 0, 1, 0], + [0, 0, -1, 0], [5, 5, 0, 1], ] ) @@ -69,7 +69,7 @@ def test_transform_with_view(view_camera: tuple[snx.Camera, adaptors.Camera]) -> [ [5, 0, 0, 0], [0, 5, 0, 0], - [0, 0, 1, 0], + [0, 0, -1, 0], [0, 0, 0, 1], ] ) @@ -82,15 +82,14 @@ def test_projection_with_view(view_camera: tuple[snx.Camera, adaptors.Camera]) - node = adaptor._vispy_node assert isinstance(node, BaseCamera) # Centered at [0, 0], top left [-1, -1], bottom right [1, 1] - identity_tform = Transform() - assert camera.projection == identity_tform + assert camera.projection == Transform().scaled((1, 1, -1)) # Vispy wants to map [-1, -1] to [0, 0] # Vispy wants to map [1, 1] to [10, 10] exp_tform_mat = np.asarray( [ [5, 0, 0, 0], [0, 5, 0, 0], - [0, 0, 1, 0], + [0, 0, -1, 0], [5, 5, 0, 1], ] ) diff --git a/tests/utils/test_projections.py b/tests/utils/test_projections.py index e8c53cdb..c7da72e2 100644 --- a/tests/utils/test_projections.py +++ b/tests/utils/test_projections.py @@ -19,9 +19,9 @@ def test_orthographic() -> None: # By default, the return should unproject NDCs to a depth-inverted unit cube exp_mat = np.asarray( [ - [1, 0, 0, 0], - [0, 1, 0, 0], - [0, 0, -1, 0], + [2, 0, 0, 0], + [0, 2, 0, 0], + [0, 0, -2, 0], [0, 0, 0, 1], ] ) @@ -29,10 +29,10 @@ def test_orthographic() -> None: assert np.array_equal(exp_mat, act_mat) exp_corners = np.asarray( [ - [-1, -1, 0], - [-1, 1, 0], - [1, -1, 0], - [1, 1, 0], + [-0.5, -0.5, 0], + [-0.5, 0.5, 0], + [0.5, -0.5, 0], + [0.5, 0.5, 0], ] ) assert np.array_equal(exp_corners, vec_unproject(CORNERS, act_mat)) From 85d123531a8876956726a01b73557bd30091dd21 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 17 Jul 2025 11:50:10 -0500 Subject: [PATCH 022/120] Clean up vispy adaptor tests --- tests/adaptors/_vispy/test_camera.py | 77 ++++++++++------------------ 1 file changed, 28 insertions(+), 49 deletions(-) diff --git a/tests/adaptors/_vispy/test_camera.py b/tests/adaptors/_vispy/test_camera.py index 5f4f3eaa..1b3962e8 100644 --- a/tests/adaptors/_vispy/test_camera.py +++ b/tests/adaptors/_vispy/test_camera.py @@ -17,15 +17,7 @@ @pytest.fixture -def camera() -> tuple[snx.Camera, adaptors.Camera]: - model_cam = snx.Camera() - adaptor = get_adaptor_registry().get_adaptor(model_cam, create=True) - assert isinstance(adaptor, adaptors.Camera) - return (model_cam, adaptor) - - -@pytest.fixture -def view_camera() -> Generator[tuple[snx.Camera, adaptors.Camera], None, None]: +def camera() -> Generator[tuple[snx.Camera, adaptors.Camera], None, None]: view = snx.View(camera=snx.Camera()) adaptor = get_adaptor_registry().get_adaptor(view.camera, create=True) get_adaptor_registry().get_adaptor(view, create=True) @@ -34,55 +26,56 @@ def view_camera() -> Generator[tuple[snx.Camera, adaptors.Camera], None, None]: yield (view.camera, adaptor) -@pytest.fixture -def adaptor(camera: snx.Camera) -> adaptors.Camera: - adaptor = get_adaptor_registry().get_adaptor(camera, create=True) - assert isinstance(adaptor, adaptors.Camera) - return adaptor - - -def test_transform_with_view(view_camera: tuple[snx.Camera, adaptors.Camera]) -> None: - camera, adaptor = view_camera +def test_transform_defaults(camera: tuple[snx.Camera, adaptors.Camera]) -> None: + model, adaptor = camera node = adaptor._vispy_node assert isinstance(node, BaseCamera) - # Centered at [0, 0], top left [-1, -1], bottom right [1, 1] - identity_tform = Transform() - assert camera.transform == identity_tform - # Vispy wants to map [-1, -1] to [0, 0] - # Vispy wants to map [1, 1] to [10, 10] + # Centered at [0, 0], top left [-0.5, -0.5], bottom right [0.5, 0.5] + assert model.transform == Transform() + assert model.projection == projections.orthographic(1, 1, 1) + # Vispy wants to map [-0.5, -0.5] to [0, 0] + # Vispy wants to map [0.5, 0.5] to [10, 10] exp_tform_mat = np.asarray( [ - [5, 0, 0, 0], - [0, 5, 0, 0], - [0, 0, -1, 0], + [10, 0, 0, 0], + [0, 10, 0, 0], + [0, 0, -2, 0], [5, 5, 0, 1], ] ) assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] + +def test_transform_translate(camera: tuple[snx.Camera, adaptors.Camera]) -> None: + model, adaptor = camera + + node = adaptor._vispy_node + assert isinstance(node, BaseCamera) + # Move the camera - camera.transform = Transform().translated((1, 1)) + model.transform = Transform().translated((0.5, 0.5)) # Vispy wants to map [0, 0] to [0, 0] - # Vispy wants to map [2, 2] to [10, 10] + # Vispy wants to map [1, 1] to [10, 10] exp_tform_mat = np.asarray( [ - [5, 0, 0, 0], - [0, 5, 0, 0], - [0, 0, -1, 0], + [10, 0, 0, 0], + [0, 10, 0, 0], + [0, 0, -2, 0], [0, 0, 0, 1], ] ) assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] -def test_projection_with_view(view_camera: tuple[snx.Camera, adaptors.Camera]) -> None: - camera, adaptor = view_camera +def test_transform_scale(camera: tuple[snx.Camera, adaptors.Camera]) -> None: + model, adaptor = camera node = adaptor._vispy_node assert isinstance(node, BaseCamera) - # Centered at [0, 0], top left [-1, -1], bottom right [1, 1] - assert camera.projection == Transform().scaled((1, 1, -1)) + + # Widen the projection matrix + model.projection = projections.orthographic(2, 2, 2) # Vispy wants to map [-1, -1] to [0, 0] # Vispy wants to map [1, 1] to [10, 10] exp_tform_mat = np.asarray( @@ -94,17 +87,3 @@ def test_projection_with_view(view_camera: tuple[snx.Camera, adaptors.Camera]) - ] ) assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] - - # Widen the projection matrix - camera.projection = projections.orthographic(4, 4) - # Vispy wants to map [-2, -2] to [0, 0] - # Vispy wants to map [2, 2] to [10, 10] - exp_tform_mat = np.asarray( - [ - [2.5, 0, 0, 0], - [0, 2.5, 0, 0], - [0, 0, -1, 0], - [5, 5, 0, 1], - ] - ) - assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] From 9fbeae3870708889517774ae4a225b2057e56519 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 17 Jul 2025 12:00:38 -0500 Subject: [PATCH 023/120] Add pygfx camera adaptor tests --- tests/adaptors/_pygfx/test_camera.py | 71 ++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 tests/adaptors/_pygfx/test_camera.py diff --git a/tests/adaptors/_pygfx/test_camera.py b/tests/adaptors/_pygfx/test_camera.py new file mode 100644 index 00000000..e3eedb79 --- /dev/null +++ b/tests/adaptors/_pygfx/test_camera.py @@ -0,0 +1,71 @@ +from __future__ import annotations + +from typing import TYPE_CHECKING + +import numpy as np +import pygfx.cameras as pygfx +import pytest + +import scenex as snx +import scenex.adaptors._pygfx as adaptors +from scenex.adaptors import get_adaptor_registry +from scenex.model._transform import Transform +from scenex.utils import projections + +if TYPE_CHECKING: + from collections.abc import Generator + + +@pytest.fixture +def camera() -> Generator[tuple[snx.Camera, adaptors.Camera], None, None]: + view = snx.View(camera=snx.Camera()) + adaptor = get_adaptor_registry().get_adaptor(view.camera, create=True) + get_adaptor_registry().get_adaptor(view, create=True) + assert isinstance(adaptor, adaptors.Camera) + # TODO: Do we need to hold on to a view ref? + yield (view.camera, adaptor) + + +def test_transform_defaults(camera: tuple[snx.Camera, adaptors.Camera]) -> None: + model, adaptor = camera + + node = adaptor._pygfx_node + assert isinstance(node, pygfx.Camera) + # Centered at [0, 0], top left [-0.5, -0.5], bottom right [0.5, 0.5] + assert model.transform == Transform() + assert model.projection == projections.orthographic(1, 1, 1) + + # Assert internal pygfx matrices match the model matrices + # Note that pygfx matrices are transposes of scenex matrices + assert np.array_equal(node.local.matrix.T, Transform()) + assert np.array_equal(node.projection_matrix.T, projections.orthographic(1, 1, 1)) # pyright: ignore[reportAttributeAccessIssue] + + +def test_transform_translate(camera: tuple[snx.Camera, adaptors.Camera]) -> None: + model, adaptor = camera + + node = adaptor._pygfx_node + assert isinstance(node, pygfx.Camera) + + # Move the camera + model.transform = Transform().translated((0.5, 0.5)) + + # Assert internal pygfx matrices match the expected model matrices + # Note that pygfx matrices are transposes of scenex matrices + assert np.array_equal(node.local.matrix.T, Transform().translated((0.5, 0.5))) + assert np.array_equal(node.projection_matrix.T, projections.orthographic(1, 1, 1)) # pyright: ignore[reportAttributeAccessIssue] + + +def test_transform_scale(camera: tuple[snx.Camera, adaptors.Camera]) -> None: + model, adaptor = camera + + node = adaptor._pygfx_node + assert isinstance(node, pygfx.Camera) + + # Widen the projection matrix + model.projection = projections.orthographic(2, 2, 2) + + # Assert internal pygfx matrices match the expected model matrices + # Note that pygfx matrices are transposes of scenex matrices + assert np.array_equal(node.local.matrix.T, Transform()) + assert np.array_equal(node.projection_matrix.T, projections.orthographic(2, 2, 2)) # pyright: ignore[reportAttributeAccessIssue] From 84eec497ba206c063522ec92c2e46ffa81b5492d Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 17 Jul 2025 16:52:59 -0500 Subject: [PATCH 024/120] Add Node.bounding_box --- src/scenex/model/_nodes/image.py | 14 ++++++++++++-- src/scenex/model/_nodes/node.py | 10 +++++++++- src/scenex/model/_nodes/points.py | 14 ++++++++++++-- tests/model/_nodes/test_image.py | 16 ++++++++++++++++ tests/model/_nodes/test_points.py | 20 ++++++++++++++++++++ tests/model/_nodes/test_volume.py | 16 ++++++++++++++++ 6 files changed, 85 insertions(+), 5 deletions(-) create mode 100644 tests/model/_nodes/test_image.py create mode 100644 tests/model/_nodes/test_points.py create mode 100644 tests/model/_nodes/test_volume.py diff --git a/src/scenex/model/_nodes/image.py b/src/scenex/model/_nodes/image.py index 1b419886..67426fc4 100644 --- a/src/scenex/model/_nodes/image.py +++ b/src/scenex/model/_nodes/image.py @@ -2,9 +2,9 @@ from annotated_types import Interval from cmap import Colormap -from pydantic import Field +from pydantic import Field, computed_field -from .node import Node +from .node import AABB, Node InterpolationMode = Literal["nearest", "linear", "bicubic"] @@ -33,3 +33,13 @@ class Image(Node): interpolation: InterpolationMode = Field( default="nearest", description="Interpolation mode." ) + + @computed_field # type: ignore[prop-decorator] + @property # TODO: Cache? + def bounding_box(self) -> AABB: + if not hasattr(self.data, "shape"): + raise TypeError(f"{self.data} does not have a shape!") + shape = self.data.shape + mi = [-0.5 for _d in shape] + [0] * (3 - len(shape)) + ma = [d - 0.5 for d in shape] + [0] * (3 - len(shape)) + return (tuple(mi), tuple(ma)) # type: ignore diff --git a/src/scenex/model/_nodes/node.py b/src/scenex/model/_nodes/node.py index 3213ec7d..a96a960a 100644 --- a/src/scenex/model/_nodes/node.py +++ b/src/scenex/model/_nodes/node.py @@ -1,6 +1,6 @@ import logging from collections.abc import Iterable, Iterator -from typing import TYPE_CHECKING, Annotated, Any, ClassVar, Union, cast +from typing import TYPE_CHECKING, Annotated, Any, ClassVar, TypeAlias, Union, cast from psygnal import Signal from pydantic import ( @@ -47,6 +47,9 @@ class NodeKwargs(TypedDict, total=False): Union["Image", "Points", "Camera", "Scene"], Field(discriminator="node_type") ] +# Axis-Aligned Bounding Box +AABB: TypeAlias = tuple[tuple[float, float, float], tuple[float, float, float]] + class Node(EventedBase): """Base class for all nodes. Also a [`Container[Node]`][collections.abc.Container]. @@ -108,6 +111,11 @@ def children(self) -> tuple["Node", ...]: """Return a tuple of the children of this node.""" return tuple(self._children) + @computed_field # type: ignore[prop-decorator] + @property # TODO: Cache? + def bounding_box(self) -> AABB: + return ((0, 0, 0), (0, 0, 0)) + def add_child(self, child: "AnyNode") -> None: """Add a child node to this node.""" self._children.append(child) diff --git a/src/scenex/model/_nodes/points.py b/src/scenex/model/_nodes/points.py index 20d0d879..23757a87 100644 --- a/src/scenex/model/_nodes/points.py +++ b/src/scenex/model/_nodes/points.py @@ -2,11 +2,12 @@ from typing import Annotated, Any, Literal +import numpy as np from annotated_types import Interval from cmap import Color -from pydantic import Field +from pydantic import Field, computed_field -from .node import Node +from .node import AABB, Node SymbolName = Literal[ "disc", @@ -54,3 +55,12 @@ class Points(Node): ) antialias: float = Field(default=1, description="Anti-aliasing factor, in px.") + + @computed_field # type: ignore[prop-decorator] + @property # TODO: Cache? + def bounding_box(self) -> AABB: + arr = np.asarray(self.coords) + return ( + tuple(float(d) for d in np.min(arr, axis=0)), + tuple(float(d) for d in np.max(arr, axis=0)), + ) # type: ignore diff --git a/tests/model/_nodes/test_image.py b/tests/model/_nodes/test_image.py new file mode 100644 index 00000000..66f292eb --- /dev/null +++ b/tests/model/_nodes/test_image.py @@ -0,0 +1,16 @@ +import numpy as np +import pytest + +import scenex as snx + + +@pytest.fixture +def image() -> snx.Image: + return snx.Image( + data=np.random.randint(0, 255, (100, 100), dtype=np.uint8), + ) + + +def test_bounding_box(image: snx.Image) -> None: + exp_bounding_box = np.asarray(((-0.5, -0.5, 0), (99.5, 99.5, 0))) + assert np.array_equal(exp_bounding_box, image.bounding_box) diff --git a/tests/model/_nodes/test_points.py b/tests/model/_nodes/test_points.py new file mode 100644 index 00000000..c319ffc8 --- /dev/null +++ b/tests/model/_nodes/test_points.py @@ -0,0 +1,20 @@ +import numpy as np +import pytest + +import scenex as snx + + +@pytest.fixture +def points() -> snx.Points: + return snx.Points( + coords=np.random.randint(0, 255, (100, 3), dtype=np.uint8), + ) + + +def test_bounding_box(points: snx.Points) -> None: + # This test is a bit tautological, but it does prevent anything crazy from happening + # :) + exp_bounding_box = np.asarray( + (np.min(points.coords, axis=0), np.max(points.coords, axis=0)) + ) + assert np.array_equal(exp_bounding_box, points.bounding_box) diff --git a/tests/model/_nodes/test_volume.py b/tests/model/_nodes/test_volume.py new file mode 100644 index 00000000..6e1573ea --- /dev/null +++ b/tests/model/_nodes/test_volume.py @@ -0,0 +1,16 @@ +import numpy as np +import pytest + +import scenex as snx + + +@pytest.fixture +def volume() -> snx.Volume: + return snx.Volume( + data=np.random.randint(0, 255, (100, 100, 60), dtype=np.uint8), + ) + + +def test_bounding_box(volume: snx.Volume) -> None: + exp_bounding_box = np.asarray(((-0.5, -0.5, -0.5), (99.5, 99.5, 59.5))) + assert np.array_equal(exp_bounding_box, volume.bounding_box) From 82a2b781f22d78276c0fb22a62137ae6fba1d1a2 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 18 Jul 2025 09:44:35 -0500 Subject: [PATCH 025/120] Recursively include child bounding boxes Still need to add that functionality to child nodes...somehow :) --- src/scenex/model/_nodes/node.py | 12 ++++++- src/scenex/utils/projections.py | 17 ++++++++++ tests/model/_nodes/test_scene.py | 54 ++++++++++++++++++++++++++++++++ 3 files changed, 82 insertions(+), 1 deletion(-) create mode 100644 tests/model/_nodes/test_scene.py diff --git a/src/scenex/model/_nodes/node.py b/src/scenex/model/_nodes/node.py index a96a960a..7b3a9d27 100644 --- a/src/scenex/model/_nodes/node.py +++ b/src/scenex/model/_nodes/node.py @@ -2,6 +2,7 @@ from collections.abc import Iterable, Iterator from typing import TYPE_CHECKING, Annotated, Any, ClassVar, TypeAlias, Union, cast +import numpy as np from psygnal import Signal from pydantic import ( ConfigDict, @@ -114,7 +115,16 @@ def children(self) -> tuple["Node", ...]: @computed_field # type: ignore[prop-decorator] @property # TODO: Cache? def bounding_box(self) -> AABB: - return ((0, 0, 0), (0, 0, 0)) + if not self.children: + return ((0, 0, 0), (0, 0, 0)) + # FIXME: Avoid copying this in the node subclasses - they will want it because + # nothing is stopping them from having children of their own :) + node_aabbs = [n.transform.map(n.bounding_box)[:, :3] for n in self.children] + mi = np.min(np.vstack([t[0] for t in node_aabbs]), axis=0) + ma = np.max(np.vstack([t[1] for t in node_aabbs]), axis=0) + # Note the casting is important for pydantic + # FIXME: Should just validate in pydantic + return (tuple(float(m) for m in mi), tuple(float(m) for m in ma)) # type: ignore def add_child(self, child: "AnyNode") -> None: """Add a child node to this node.""" diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 5c19e9a1..7c1041ca 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -1,11 +1,21 @@ """Utilities for creating projection matrices.""" +from __future__ import annotations + from math import pi, tan +from typing import TYPE_CHECKING import numpy as np +# FIXME the top import (commented out) does not work due to a circular import +# Because the Camera model uses orthographic for its default transform. +# Might want to think about a better organization. +# from scenex.model import Transform from scenex.model._transform import Transform +if TYPE_CHECKING: + from scenex.model import View + def orthographic(width: float = 1, height: float = 1, depth: float = 1) -> Transform: """Creates an orthographic projection matrix. @@ -82,3 +92,10 @@ def perspective(fov: float, near: float, far: float) -> Transform: matrix[3, 2] = -1 return Transform(root=matrix) + + +def zoom_to_fit(view: View) -> None: + """Adjusts Camera parameters to fit the entire scene.""" + # Get the scene bounding box: + # for child in view.scene.children + pass diff --git a/tests/model/_nodes/test_scene.py b/tests/model/_nodes/test_scene.py new file mode 100644 index 00000000..20f44baa --- /dev/null +++ b/tests/model/_nodes/test_scene.py @@ -0,0 +1,54 @@ +import numpy as np + +import scenex as snx +from scenex.model._transform import Transform + + +def test_bounding_box() -> None: + # An empty scene should have an "empty" bounding box + empty_scene = snx.Scene() + # TODO: Is the bounding box of an empty node really zeroes? Need to think more about + # that. + exp_bounding_box = np.zeros((2, 3)) + assert np.array_equal(exp_bounding_box, empty_scene.bounding_box) + + # With children, the bounding box should be defined by the scene + points_scene = snx.Scene( + children=[snx.Points(coords=np.asarray([[0, 100, 0], [100, 0, 1]]))] + ) + exp_bounding_box = np.asarray(((0, 0, 0), (100, 100, 1))) + assert np.array_equal(exp_bounding_box, points_scene.bounding_box) + + # The bounding box should move as their points move. + points_scene = snx.Scene( + children=[ + snx.Points( + coords=np.asarray([[0, 100, 0], [100, 0, 1]]), + transform=Transform().translated((1, 1, 1)), + ) + ] + ) + exp_bounding_box = np.asarray(((1, 1, 1), (101, 101, 2))) + assert np.array_equal(exp_bounding_box, points_scene.bounding_box) + + # The bounding box should encapsulate all children + points_scene = snx.Scene( + children=[ + snx.Points( + coords=np.asarray( + [ + [0, 100, 0], + ] + ), + ), + snx.Points( + coords=np.asarray( + [ + [100, 0, 1], + ] + ), + ), + ] + ) + exp_bounding_box = np.asarray(((0, 0, 0), (100, 100, 1))) + assert np.array_equal(exp_bounding_box, points_scene.bounding_box) From fcb8fd80a0a3b68ef4deb64b86bb157e1fa874bc Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 18 Jul 2025 12:35:33 -0500 Subject: [PATCH 026/120] Write model-based zoom-to-fit --- src/scenex/util.py | 4 ++-- src/scenex/utils/projections.py | 30 ++++++++++++++++++++++----- tests/utils/test_projections.py | 36 ++++++++++++++++++++++++++++++--- 3 files changed, 60 insertions(+), 10 deletions(-) diff --git a/src/scenex/util.py b/src/scenex/util.py index f42051f8..7cfc3c6b 100644 --- a/src/scenex/util.py +++ b/src/scenex/util.py @@ -8,6 +8,7 @@ from typing import TYPE_CHECKING, Any, Protocol from scenex import model +from scenex.utils import projections if TYPE_CHECKING: from typing import TypeAlias @@ -124,8 +125,7 @@ def show( reg = get_adaptor_registry(backend=backend) reg.get_adaptor(canvas, create=True) for view in canvas.views: - cam = reg.get_adaptor(view.camera) - cam._snx_zoom_to_fit(0.1) + projections.zoom_to_fit(view, zoom_factor=0.9) # logger.debug("SHOW MODEL %s", tree_repr(view.scene)) # native_scene = view.scene._get_native() diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 7c1041ca..a423d504 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -49,6 +49,9 @@ def orthographic(width: float = 1, height: float = 1, depth: float = 1) -> Trans projection: Transform A Transform matrix creating an orthographic camera view """ + width = width if width else 1e-6 + height = height if height else 1e-6 + depth = depth if depth else 1e-6 return Transform().scaled((2 / width, 2 / height, -2 / depth)) @@ -94,8 +97,25 @@ def perspective(fov: float, near: float, far: float) -> Transform: return Transform(root=matrix) -def zoom_to_fit(view: View) -> None: - """Adjusts Camera parameters to fit the entire scene.""" - # Get the scene bounding box: - # for child in view.scene.children - pass +# TODO: perspective mode? +# TODO: Preserve some camera state? +def zoom_to_fit(view: View, zoom_factor: float = 1.0) -> None: + """Adjusts the Camera to fit the entire scene. + + Parameters + ---------- + view: View + The view to adjust. Contains the camera, whose parameters will be adjusted, and + the scene, whose elements will be considered in the adjustment. + zoom_factor: float + The amount to zoom the scene after adjusting camera parameters. The default, + 1.0, will leave the scene touching the edges of the view. As the zoom factor + approaches 0, the scene will linearly decrease in size. As the zoom factor + increases beyond 1.0, the bounds of the scene will expand linearly beyond the + view. + """ + # TODO: Test whether the camera can affect the bounding box... + + bb = view.scene.bounding_box + view.camera.transform = Transform().translated(np.mean(bb, axis=0)) + view.camera.projection = orthographic(*np.ptp(bb, axis=0)).scaled([zoom_factor] * 3) diff --git a/tests/utils/test_projections.py b/tests/utils/test_projections.py index c7da72e2..a74733c0 100644 --- a/tests/utils/test_projections.py +++ b/tests/utils/test_projections.py @@ -1,8 +1,8 @@ import numpy as np from pylinalg import vec_unproject -from scenex.model._transform import Transform -from scenex.utils.projections import orthographic, perspective +import scenex as snx +from scenex.utils.projections import orthographic, perspective, zoom_to_fit CORNERS = np.asarray( [ @@ -78,7 +78,9 @@ def test_projection() -> None: # Note the z-offset is like 300.09. Might be rounding errors? assert np.allclose(exp_mat, mat, rtol=1e-1) - def _project(mat: Transform, world_pos: tuple[float, float, float]) -> np.ndarray: + def _project( + mat: snx.Transform, world_pos: tuple[float, float, float] + ) -> np.ndarray: # Inverting the behavior of vec_unproject proj = np.dot(mat.root, np.asarray((*world_pos, 1))) return proj[:2] / proj[3] # type: ignore @@ -91,3 +93,31 @@ def _project(mat: Transform, world_pos: tuple[float, float, float]) -> np.ndarra # Test a near frustum corner, TRANSLATED back in the scene, does not map to a corner # This point models the back face of a volume assert np.allclose(np.asarray((5 / 6, 5 / 6)), _project(mat, (300, 300, -360))) + + +def test_zoom_to_fit() -> None: + view = snx.View( + scene=snx.Scene( + children=[snx.Points(coords=np.asarray([[0, 100, 0], [100, 0, 1]]))] + ) + ) + + zoom_to_fit(view) + # Assert the camera is moved to the center of the scene + assert view.camera.transform == snx.Transform().translated((50, 50, 0.5)) + # Projection that maps world space to canvas coordinates + tform = view.camera.transform.inv() @ view.camera.projection + # Assert the camera projects [0, 0, 0] to NDC coordinates [-1, -1] + assert np.array_equal((-1, -1), tform.map((0, 0, 0))[:2]) + # ...and [100, 100, 0] to NDC coordinates [1, 1] + assert np.array_equal((1, 1), tform.map((100, 100, 0))[:2]) + + zoom_to_fit(view, zoom_factor=0.9) + # Assert the camera is still at the center of the scene + assert view.camera.transform == snx.Transform().translated((50, 50, 0.5)) + # Projection that maps world space to canvas coordinates + tform = view.camera.transform.inv() @ view.camera.projection + # Assert the camera projects [0, 0, 0] to NDC coordinates [-0.9, -0.9] + assert np.allclose((-0.9, -0.9), tform.map((0, 0, 0))[:2], rtol=1e-10) + # ...and [100, 100, 0] to NDC coordinates [0.9, 0.9] + assert np.allclose((0.9, 0.9), tform.map((100, 100, 0))[:2], rtol=1e-10) From 9ddde419b00445ffe6ce29d4d318fb7d3009cd9e Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 18 Jul 2025 12:54:29 -0500 Subject: [PATCH 027/120] Remove adaptor zoom-to-fits --- src/scenex/adaptors/_base.py | 2 -- src/scenex/adaptors/_pygfx/_camera.py | 29 +-------------------------- src/scenex/adaptors/_vispy/_camera.py | 5 ----- 3 files changed, 1 insertion(+), 35 deletions(-) diff --git a/src/scenex/adaptors/_base.py b/src/scenex/adaptors/_base.py index cb9a0a4b..9a385ae5 100644 --- a/src/scenex/adaptors/_base.py +++ b/src/scenex/adaptors/_base.py @@ -120,8 +120,6 @@ class CameraAdaptor(NodeAdaptor[TCamera, TNative]): @abstractmethod def _snx_set_type(self, arg: model.CameraType, /) -> None: ... @abstractmethod - def _snx_zoom_to_fit(self, arg: float, /) -> None: ... - @abstractmethod def _snx_set_projection(self, arg: model.Transform, /) -> None: ... diff --git a/src/scenex/adaptors/_pygfx/_camera.py b/src/scenex/adaptors/_pygfx/_camera.py index 54471a17..38a3f2e9 100644 --- a/src/scenex/adaptors/_pygfx/_camera.py +++ b/src/scenex/adaptors/_pygfx/_camera.py @@ -1,14 +1,12 @@ from __future__ import annotations import logging -from typing import TYPE_CHECKING, Any, cast +from typing import TYPE_CHECKING, Any -import numpy as np import pygfx from scenex.adaptors._base import CameraAdaptor -from ._adaptor_registry import get_adaptor from ._node import Node if TYPE_CHECKING: @@ -55,28 +53,3 @@ def set_viewport(self, viewport: pygfx.Viewport) -> None: def _snx_set_projection(self, arg: Transform) -> None: self._pygfx_node.projection_matrix = arg.root # pyright: ignore[reportAttributeAccessIssue] - - def _snx_zoom_to_fit(self, margin: float) -> None: - # reset camera to fit all objects - if not (scene := self._camera_model.parent): - logger.warning("Camera has no parent scene, cannot zoom to fit") - return - - gfx_scene = cast("pygfx.Scene", get_adaptor(scene)._snx_get_native()) - cam = self._pygfx_node - - if (bb := gfx_scene.get_world_bounding_box()) is not None: - cam.show_object(gfx_scene) - width, height, _depth = np.ptp(bb, axis=0) - if width < 0.01: - width = 1 - if height < 0.01: - height = 1 - cam.width = width - cam.height = height - cam.zoom = 1 - margin - # FIXME: Pyright - self._camera_model.transform = cam.local.matrix.T # pyright: ignore[reportAttributeAccessIssue] - # HACK: Ideally, we'd use `cam.projection_matrix`, but it's a cached - # property that doesn't get recomputed. - self._camera_model.projection = cam._update_projection_matrix() # pyright: ignore[reportAttributeAccessIssue] diff --git a/src/scenex/adaptors/_vispy/_camera.py b/src/scenex/adaptors/_vispy/_camera.py index f1becd73..558afad8 100644 --- a/src/scenex/adaptors/_vispy/_camera.py +++ b/src/scenex/adaptors/_vispy/_camera.py @@ -85,8 +85,3 @@ def _update_vispy_node_tform(self) -> None: def _view_size(self) -> tuple[float, float] | None: """Return the size of first parent viewbox in pixels.""" raise NotImplementedError - - def _snx_zoom_to_fit(self, margin: float) -> None: - # reset camera to fit all objects - # FIXME: Implement this code in the model - self._vispy_node.set_range(margin=margin) From b655e9da42a3b9c3d1d49771d97bb6471c584c8e Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 22 Jul 2025 12:43:55 -0500 Subject: [PATCH 028/120] Clean and test zoom_to_fit --- src/scenex/model/_nodes/camera.py | 8 +++- src/scenex/model/_nodes/node.py | 16 +++---- src/scenex/model/_nodes/volume.py | 12 ++++- src/scenex/utils/projections.py | 30 ++++++++++-- tests/model/_nodes/test_scene.py | 17 ++++--- tests/model/_nodes/test_volume.py | 3 +- tests/utils/test_projections.py | 77 +++++++++++++++++++++++++------ 7 files changed, 128 insertions(+), 35 deletions(-) diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index 0ccecb57..97bfa5bb 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -2,7 +2,7 @@ from typing import TYPE_CHECKING, Literal -from pydantic import Field +from pydantic import Field, computed_field from scenex.utils import projections @@ -43,3 +43,9 @@ class Camera(Node): description="Describes how 3D points are mapped to a 2D canvas, " "default is an orthographic projection of a unit cube, centered at (0, 0, 0)", ) + + @computed_field # type: ignore[prop-decorator] + @property # TODO: Cache? + def bounding_box(self) -> None: + # Prevent cameras from distorting scene bounding boxes + return None diff --git a/src/scenex/model/_nodes/node.py b/src/scenex/model/_nodes/node.py index 7b3a9d27..22d736c4 100644 --- a/src/scenex/model/_nodes/node.py +++ b/src/scenex/model/_nodes/node.py @@ -114,14 +114,14 @@ def children(self) -> tuple["Node", ...]: @computed_field # type: ignore[prop-decorator] @property # TODO: Cache? - def bounding_box(self) -> AABB: - if not self.children: - return ((0, 0, 0), (0, 0, 0)) - # FIXME: Avoid copying this in the node subclasses - they will want it because - # nothing is stopping them from having children of their own :) - node_aabbs = [n.transform.map(n.bounding_box)[:, :3] for n in self.children] - mi = np.min(np.vstack([t[0] for t in node_aabbs]), axis=0) - ma = np.max(np.vstack([t[1] for t in node_aabbs]), axis=0) + def bounding_box(self) -> AABB | None: + bounded_nodes = [c for c in self.children if c.bounding_box] + if not bounded_nodes: + # If there are no children declaring a bounding box, return None + return None + node_aabbs = [n.transform.map(n.bounding_box)[:, :3] for n in bounded_nodes] # type:ignore + mi = np.vstack([t[0] for t in node_aabbs]).min(axis=0) + ma = np.vstack([t[1] for t in node_aabbs]).max(axis=0) # Note the casting is important for pydantic # FIXME: Should just validate in pydantic return (tuple(float(m) for m in mi), tuple(float(m) for m in ma)) # type: ignore diff --git a/src/scenex/model/_nodes/volume.py b/src/scenex/model/_nodes/volume.py index a4ac643d..fdde12b9 100644 --- a/src/scenex/model/_nodes/volume.py +++ b/src/scenex/model/_nodes/volume.py @@ -1,6 +1,8 @@ from typing import Literal -from pydantic import Field +from pydantic import Field, computed_field + +from scenex.model._nodes.node import AABB from .image import Image @@ -14,3 +16,11 @@ class Volume(Image): default="mip", description="The method to use in rendering the volume.", ) + + @computed_field # type: ignore[prop-decorator] + @property # TODO: Cache? + def bounding_box(self) -> AABB: + bb = super().bounding_box + # We can reuse the image version, but the first dimension needs to be swapped + # To account for the ZYX convention. + return ((bb[0][1], bb[0][2], bb[0][0]), (bb[1][1], bb[1][2], bb[1][0])) diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index a423d504..5275621d 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -3,7 +3,7 @@ from __future__ import annotations from math import pi, tan -from typing import TYPE_CHECKING +from typing import TYPE_CHECKING, Literal import numpy as np @@ -99,7 +99,11 @@ def perspective(fov: float, near: float, far: float) -> Transform: # TODO: perspective mode? # TODO: Preserve some camera state? -def zoom_to_fit(view: View, zoom_factor: float = 1.0) -> None: +def zoom_to_fit( + view: View, + type: Literal["perspective", "orthographic"] = "orthographic", + zoom_factor: float = 1.0, +) -> None: """Adjusts the Camera to fit the entire scene. Parameters @@ -107,6 +111,8 @@ def zoom_to_fit(view: View, zoom_factor: float = 1.0) -> None: view: View The view to adjust. Contains the camera, whose parameters will be adjusted, and the scene, whose elements will be considered in the adjustment. + type: Literal["perspective", "orthographic"] + The type of canvas projection to use. Orthographic by default. zoom_factor: float The amount to zoom the scene after adjusting camera parameters. The default, 1.0, will leave the scene touching the edges of the view. As the zoom factor @@ -117,5 +123,21 @@ def zoom_to_fit(view: View, zoom_factor: float = 1.0) -> None: # TODO: Test whether the camera can affect the bounding box... bb = view.scene.bounding_box - view.camera.transform = Transform().translated(np.mean(bb, axis=0)) - view.camera.projection = orthographic(*np.ptp(bb, axis=0)).scaled([zoom_factor] * 3) + center = np.mean(bb, axis=0) if bb else (0, 0, 0) + w, h, d = np.ptp(bb, axis=0) if bb else (1, 1, 1) + if type == "orthographic": + view.camera.transform = Transform().translated(center) + view.camera.projection = orthographic(w, h, d).scaled([zoom_factor] * 3) + elif type == "perspective": + # Compute the distance a to the near plane of the frustum using a default fov + o = max(w, h) / 2 + fov = 70 + a = o / tan(fov * pi / 360) / zoom_factor + + # So that the bounding cube's front plane is mapped to the canvas, + # the camera must be a units away from the front plane (at z=(center[2] + d/2)) + z_bound = center[2] + (d / 2) + a + view.camera.transform = Transform().translated((center[0], center[1], z_bound)) + view.camera.projection = perspective(fov, a, far=1_000_000) + else: + raise TypeError(f"Unrecognized projection type: {type}") diff --git a/tests/model/_nodes/test_scene.py b/tests/model/_nodes/test_scene.py index 20f44baa..b0a2ad42 100644 --- a/tests/model/_nodes/test_scene.py +++ b/tests/model/_nodes/test_scene.py @@ -7,17 +7,16 @@ def test_bounding_box() -> None: # An empty scene should have an "empty" bounding box empty_scene = snx.Scene() - # TODO: Is the bounding box of an empty node really zeroes? Need to think more about - # that. - exp_bounding_box = np.zeros((2, 3)) - assert np.array_equal(exp_bounding_box, empty_scene.bounding_box) + assert empty_scene.bounding_box is None # With children, the bounding box should be defined by the scene points_scene = snx.Scene( children=[snx.Points(coords=np.asarray([[0, 100, 0], [100, 0, 1]]))] ) exp_bounding_box = np.asarray(((0, 0, 0), (100, 100, 1))) - assert np.array_equal(exp_bounding_box, points_scene.bounding_box) + act_bouning_box = points_scene.bounding_box + assert act_bouning_box is not None + assert np.array_equal(exp_bounding_box, act_bouning_box) # The bounding box should move as their points move. points_scene = snx.Scene( @@ -29,7 +28,9 @@ def test_bounding_box() -> None: ] ) exp_bounding_box = np.asarray(((1, 1, 1), (101, 101, 2))) - assert np.array_equal(exp_bounding_box, points_scene.bounding_box) + act_bouning_box = points_scene.bounding_box + assert act_bouning_box is not None + assert np.array_equal(exp_bounding_box, act_bouning_box) # The bounding box should encapsulate all children points_scene = snx.Scene( @@ -51,4 +52,6 @@ def test_bounding_box() -> None: ] ) exp_bounding_box = np.asarray(((0, 0, 0), (100, 100, 1))) - assert np.array_equal(exp_bounding_box, points_scene.bounding_box) + act_bouning_box = points_scene.bounding_box + assert act_bouning_box is not None + assert np.array_equal(exp_bounding_box, act_bouning_box) diff --git a/tests/model/_nodes/test_volume.py b/tests/model/_nodes/test_volume.py index 6e1573ea..90835a59 100644 --- a/tests/model/_nodes/test_volume.py +++ b/tests/model/_nodes/test_volume.py @@ -7,10 +7,11 @@ @pytest.fixture def volume() -> snx.Volume: return snx.Volume( - data=np.random.randint(0, 255, (100, 100, 60), dtype=np.uint8), + data=np.random.randint(0, 255, (60, 100, 100), dtype=np.uint8), ) def test_bounding_box(volume: snx.Volume) -> None: + # Note that the volume has 60 z-slices. But depth comes last in the bounding box! exp_bounding_box = np.asarray(((-0.5, -0.5, -0.5), (99.5, 99.5, 59.5))) assert np.array_equal(exp_bounding_box, volume.bounding_box) diff --git a/tests/utils/test_projections.py b/tests/utils/test_projections.py index a74733c0..7ae6c6fb 100644 --- a/tests/utils/test_projections.py +++ b/tests/utils/test_projections.py @@ -2,6 +2,7 @@ from pylinalg import vec_unproject import scenex as snx +from scenex.model._transform import Transform from scenex.utils.projections import orthographic, perspective, zoom_to_fit CORNERS = np.asarray( @@ -58,7 +59,7 @@ def test_orthographic() -> None: assert np.array_equal(exp_corners, vec_unproject(CORNERS, act_mat)) -def test_projection() -> None: +def test_perspective() -> None: """Basic testing of the perspective matrix""" fov = 90 depth_to_near = 300 @@ -78,13 +79,6 @@ def test_projection() -> None: # Note the z-offset is like 300.09. Might be rounding errors? assert np.allclose(exp_mat, mat, rtol=1e-1) - def _project( - mat: snx.Transform, world_pos: tuple[float, float, float] - ) -> np.ndarray: - # Inverting the behavior of vec_unproject - proj = np.dot(mat.root, np.asarray((*world_pos, 1))) - return proj[:2] / proj[3] # type: ignore - # Test a near frustum corner maps to a canvas corner # Note that by convention positive z points away from the scene. assert np.allclose(np.asarray((1, 1)), _project(mat, (300, 300, -300))) @@ -95,14 +89,14 @@ def _project( assert np.allclose(np.asarray((5 / 6, 5 / 6)), _project(mat, (300, 300, -360))) -def test_zoom_to_fit() -> None: +def test_zoom_to_fit_orthographic() -> None: view = snx.View( scene=snx.Scene( children=[snx.Points(coords=np.asarray([[0, 100, 0], [100, 0, 1]]))] ) ) - zoom_to_fit(view) + zoom_to_fit(view, type="orthographic") # Assert the camera is moved to the center of the scene assert view.camera.transform == snx.Transform().translated((50, 50, 0.5)) # Projection that maps world space to canvas coordinates @@ -112,12 +106,69 @@ def test_zoom_to_fit() -> None: # ...and [100, 100, 0] to NDC coordinates [1, 1] assert np.array_equal((1, 1), tform.map((100, 100, 0))[:2]) - zoom_to_fit(view, zoom_factor=0.9) + zoom_factor = 0.9 + zoom_to_fit(view, type="orthographic", zoom_factor=zoom_factor) # Assert the camera is still at the center of the scene assert view.camera.transform == snx.Transform().translated((50, 50, 0.5)) # Projection that maps world space to canvas coordinates tform = view.camera.transform.inv() @ view.camera.projection # Assert the camera projects [0, 0, 0] to NDC coordinates [-0.9, -0.9] - assert np.allclose((-0.9, -0.9), tform.map((0, 0, 0))[:2], rtol=1e-10) + assert np.allclose( + (-zoom_factor, -zoom_factor), tform.map((0, 0, 0))[:2], rtol=1e-10 + ) # ...and [100, 100, 0] to NDC coordinates [0.9, 0.9] - assert np.allclose((0.9, 0.9), tform.map((100, 100, 0))[:2], rtol=1e-10) + assert np.allclose( + (zoom_factor, zoom_factor), tform.map((100, 100, 0))[:2], rtol=1e-10 + ) + + +def test_zoom_to_fit_perspective() -> None: + view = snx.View( + scene=snx.Scene( + children=[snx.Points(coords=np.asarray([[0, 100, 1], [100, 0, 0]]))] + ) + ) + zoom_to_fit(view, type="perspective") + + # Assert the camera is moved to the center of the scene + # Depth isn't particularly important to test here. + assert np.array_equal( + view.camera.transform, + Transform().translated((50, 50, view.camera.transform.root[3, 2])), + ) + # Projection that maps world space to canvas coordinates + tform = view.camera.projection @ view.camera.transform.inv().T + # Assert the camera projects [0, 0, 0] to NDC coordinates [-1, -1] + assert np.array_equal((-1, -1), _project(tform, (0, 0, 1))[:2]) + # ...and [100, 100, 0] to NDC coordinates [1, 1] + assert np.array_equal((1, 1), _project(tform, (100, 100, 1))[:2]) + # And assert the entire scene is within the canvas: + assert np.all(_project(tform, (0, 0, 0)) > _project(tform, (0, 0, 1))) + assert np.all(_project(tform, (100, 100, 0)) < _project(tform, (100, 100, 1))) + + zoom_factor = 0.9 + zoom_to_fit(view, type="perspective", zoom_factor=zoom_factor) + # Assert the camera is still at the center of the scene + assert np.array_equal( + view.camera.transform, + Transform().translated((50, 50, view.camera.transform.root[3, 2])), + ) + # Projection that maps world space to canvas coordinates + tform = view.camera.projection @ view.camera.transform.inv().T + # Assert the camera projects [0, 0, 0] to NDC coordinates [-0.9, -0.9] + assert np.allclose( + (-zoom_factor, -zoom_factor), _project(tform, (0, 0, 1))[:2], rtol=1e-10 + ) + # ...and [100, 100, 0] to NDC coordinates [0.9, 0.9] + assert np.allclose( + (zoom_factor, zoom_factor), _project(tform, (100, 100, 1))[:2], rtol=1e-10 + ) + # And assert the entire scene is within the canvas: + assert np.all(_project(tform, (0, 0, 0)) > _project(tform, (0, 0, 1))) + assert np.all(_project(tform, (100, 100, 0)) < _project(tform, (100, 100, 1))) + + +def _project(mat: snx.Transform, world_pos: tuple[float, float, float]) -> np.ndarray: + # Inverting the behavior of vec_unproject + proj = np.dot(mat.root, np.asarray((*world_pos, 1))) + return proj[:2] / proj[3] # type: ignore From 61aafe889f8822d42a4dc00292baa64616a23a72 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 31 Jul 2025 14:49:18 -0500 Subject: [PATCH 029/120] Events --- examples/event_filters.py | 40 +++++++ pyproject.toml | 2 +- src/scenex/adaptors/_pygfx/_canvas.py | 52 ++++++--- src/scenex/adaptors/_pygfx/_view.py | 17 ++- src/scenex/adaptors/_vispy/_camera.py | 3 +- src/scenex/adaptors/_vispy/_canvas.py | 42 ++++++-- src/scenex/adaptors/_vispy/_image.py | 1 + src/scenex/adaptors/_vispy/_points.py | 2 + src/scenex/adaptors/_vispy/_view.py | 4 +- src/scenex/events/__init__.py | 5 + src/scenex/events/_auto.py | 150 ++++++++++++++++++++++++++ src/scenex/events/_glfw.py | 143 ++++++++++++++++++++++++ src/scenex/events/_qt.py | 132 +++++++++++++++++++++++ src/scenex/events/events.py | 146 +++++++++++++++++++++++++ src/scenex/model/_base.py | 6 +- src/scenex/model/_layout.py | 9 ++ src/scenex/model/_nodes/camera.py | 70 +++++++++++- src/scenex/model/_nodes/image.py | 91 +++++++++++++++- src/scenex/model/_nodes/node.py | 65 ++++++++--- src/scenex/model/_nodes/points.py | 59 +++++++++- src/scenex/model/_nodes/volume.py | 39 ++++++- tests/model/_nodes/test_image.py | 21 ++++ tests/test_zoom_to_fit.py | 26 +++++ 23 files changed, 1073 insertions(+), 52 deletions(-) create mode 100644 examples/event_filters.py create mode 100644 src/scenex/events/__init__.py create mode 100644 src/scenex/events/_auto.py create mode 100644 src/scenex/events/_glfw.py create mode 100644 src/scenex/events/_qt.py create mode 100644 src/scenex/events/events.py create mode 100644 tests/test_zoom_to_fit.py diff --git a/examples/event_filters.py b/examples/event_filters.py new file mode 100644 index 00000000..791f2abf --- /dev/null +++ b/examples/event_filters.py @@ -0,0 +1,40 @@ +import cmap +import numpy as np + +import scenex as snx +from scenex.events import Event, MouseEvent + +img = snx.Image( + data=np.zeros((200, 200)).astype(np.uint8), + cmap=cmap.Colormap("viridis"), + clims=(0, 255), + opacity=0.7, + interactive=True, +) + +view = snx.View(blending="default", scene=snx.Scene(children=[img])) + + +def _img_filter(event: Event, node: snx.Node) -> bool: + """Example event drawing a square that reacts to the cursor.""" + # TODO: How might we remove the square when the mouse leaves the image? + + if isinstance(event, MouseEvent) and isinstance(node, snx.Image): + data = np.zeros((200, 200), dtype=np.uint8) + x = int(event.world_ray.origin[0]) + min_x = max(0, x - 5) + max_x = min(data.shape[0], x + 5) + + y = int(event.world_ray.origin[1]) + min_y = max(0, y - 5) + max_y = min(data.shape[1], y + 5) + + data[min_x:max_x, min_y:max_y] = 255 + node.data = data + return True + + +img.set_event_filter(_img_filter) + +snx.show(view) +snx.run() diff --git a/pyproject.toml b/pyproject.toml index d755e046..c28e5e48 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -129,7 +129,7 @@ module = ["rendercanvas.*"] follow_untyped_imports = true [[tool.mypy.overrides]] -module = ["pygfx.*", "vispy.*", "wgpu.*", "pylinalg.*"] +module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*"] ignore_missing_imports = true [tool.pydantic-mypy] diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index c3fb4642..18f983e5 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -3,8 +3,10 @@ from typing import TYPE_CHECKING, Any, TypeGuard, cast from scenex.adaptors._base import CanvasAdaptor +from scenex.events._auto import app +from scenex.events.events import _handle_event -from ._adaptor_registry import adaptors +from ._adaptor_registry import get_adaptor if TYPE_CHECKING: import numpy as np @@ -30,14 +32,32 @@ class Canvas(CanvasAdaptor): def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: from rendercanvas.auto import RenderCanvas - self._wgpu_canvas = RenderCanvas() - # Qt RenderCanvas calls show() in its __init__ method, so we need to hide it - if supports_hide_show(self._wgpu_canvas): - self._wgpu_canvas.hide() + canvas_cls = RenderCanvas + # HACK: Qt + if canvas_cls.__module__.startswith("rendercanvas.qt"): + from qtpy.QtCore import QSize + from rendercanvas.auto import loop + from rendercanvas.qt import QRenderWidget + + class _QRenderWidget(QRenderWidget): + def sizeHint(self) -> QSize: + return QSize(self.width(), self.height()) + loop._rc_init() + canvas_cls = _QRenderWidget + self._canvas = canvas + self._wgpu_canvas = canvas_cls() + + # FIXME: This seems to not work on my laptop, without external monitors. + # The physical canvas size is still 625, 625... self._wgpu_canvas.set_logical_size(canvas.width, canvas.height) self._wgpu_canvas.set_title(canvas.title) - self._views = canvas.views + self._views: list[model.View] = [] + for view in canvas.views: + self._snx_add_view(view) + self._filter = app().install_event_filter( + self._wgpu_canvas, canvas, lambda e: _handle_event(canvas, e) + ) def _snx_get_native(self) -> BaseRenderCanvas: return self._wgpu_canvas @@ -50,14 +70,22 @@ def _snx_set_visible(self, arg: bool) -> None: def _draw(self) -> None: for view in self._views: - adaptor = cast("View", adaptors.get_adaptor(view, create=True)) - adaptor._draw() + cast("View", get_adaptor(view))._draw() def _snx_add_view(self, view: model.View) -> None: - pass - # adaptor = cast("View", view.backend_adaptor()) - # adaptor._pygfx_cam.set_viewport(self._viewport) - # self._views.append(adaptor) + # This logic should go in the canvas node, I think + self._views.append(view) + + # FIXME: Allow customization + x = 0.0 + dx = float(self._wgpu_canvas.get_logical_size()[0]) / len(self._views) + + for view in self._views: + view.layout.x = x + view.layout.y = 0 + view.layout.width = dx + view.layout.height = self._wgpu_canvas.get_logical_size()[1] # type: ignore + x += dx def _snx_set_width(self, arg: int) -> None: _, height = cast("tuple[float, float]", self._wgpu_canvas.get_logical_size()) diff --git a/src/scenex/adaptors/_pygfx/_view.py b/src/scenex/adaptors/_pygfx/_view.py index dab149f3..cb395ec1 100644 --- a/src/scenex/adaptors/_pygfx/_view.py +++ b/src/scenex/adaptors/_pygfx/_view.py @@ -36,9 +36,12 @@ class View(ViewAdaptor): _pygfx_cam: pygfx.Camera def __init__(self, view: model.View, **backend_kwargs: Any) -> None: + self._model = view canvas_adaptor = cast("_canvas.Canvas", get_adaptor(view.canvas)) wgpu_canvas = canvas_adaptor._snx_get_native() self._renderer = pygfx.renderers.WgpuRenderer(wgpu_canvas) + size = tuple(wgpu_canvas.get_logical_size()) + self._rect = (0, 0, float(size[0]), float(size[1])) self._snx_set_scene(view.scene) self._snx_set_camera(view.camera) @@ -65,15 +68,21 @@ def _snx_set_camera(self, cam: model.Camera) -> None: self._cam_adaptor.pygfx_controller.register_events(self._renderer) def _draw(self) -> None: - renderer = self._renderer - renderer.render(self._pygfx_scene, self._pygfx_cam) - renderer.request_draw() + self._renderer.render(self._pygfx_scene, self._pygfx_cam, rect=self._rect) + self._renderer.request_draw() def _snx_set_position(self, arg: tuple[float, float]) -> None: logger.warning("View.set_position not implemented for pygfx") def _snx_set_size(self, arg: tuple[float, float] | None) -> None: - logger.warning("View.set_size not implemented for pygfx") + if arg is None: + logger.warning( + "Ignoring View.set_size(None): Don't know how to handle this..." + ) + else: + r = self._snx_get_native().rect + self._snx_get_native().rect = (r[0], r[1], arg[0], arg[1]) + # FIXME: Camera projection transform should also be updated... def _snx_set_background_color(self, color: Color | None) -> None: colors = (color.rgba,) if color is not None else () diff --git a/src/scenex/adaptors/_vispy/_camera.py b/src/scenex/adaptors/_vispy/_camera.py index 558afad8..218f0b2f 100644 --- a/src/scenex/adaptors/_vispy/_camera.py +++ b/src/scenex/adaptors/_vispy/_camera.py @@ -45,10 +45,9 @@ def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: # The line below does not help... # self._vispy_node.flip = (False, True, False) - def _set_view(self, view: vispy.scene.ViewBox) -> None: + def _set_view(self, w: float, h: float) -> None: # map [-1, -1] to [0, 0] # map [1, 1] to [w, h] - w, h = view.size self._from_NDC = Transform().translated((1, 1)).scaled((w / 2, h / 2, 1)) self._update_vispy_node_tform() diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index 05d298a2..531b05c7 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -5,6 +5,8 @@ import numpy as np from scenex.adaptors._base import CanvasAdaptor +from scenex.events._auto import app +from scenex.events.events import _handle_event from ._adaptor_registry import get_adaptor @@ -13,6 +15,7 @@ from rendercanvas.base import BaseRenderCanvas from scenex import model + from scenex.model._view import View class SupportsHideShow(BaseRenderCanvas): def show(self) -> None: ... @@ -27,7 +30,7 @@ class Canvas(CanvasAdaptor): """Canvas interface for vispy Backend.""" def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: - from vispy.scene import Grid, SceneCanvas + from vispy.scene import Grid, SceneCanvas, VisualNode self._canvas = SceneCanvas( title=canvas.title, size=(canvas.width, canvas.height) @@ -36,28 +39,47 @@ def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: if supports_hide_show(self._canvas.native): self._canvas.native.hide() self._grid = cast("Grid", self._canvas.central_widget.add_grid()) + self._views: list[View] = [] for view in canvas.views: self._snx_add_view(view) - self._views = canvas.views + self._filter = app().install_event_filter( + self._canvas.native, canvas, lambda e: _handle_event(canvas, e) + ) + + self._visual_to_node: dict[VisualNode, model.Node | None] = {} + self._last_canvas_pos: tuple[float, float] | None = None def _snx_get_native(self) -> Any: return self._canvas.native def _snx_set_visible(self, arg: bool) -> None: # show the qt canvas we patched earlier in __init__ - if supports_hide_show(self._canvas.native): - self._canvas.show() + app().show(self._canvas.native, arg) def _draw(self) -> None: self._canvas.update() def _snx_add_view(self, view: model.View) -> None: - adaptor = get_adaptor(view) - self._grid.add_widget(adaptor._snx_get_native()) - # HACK: Update view size by passing the existing camera - self._grid._prepare_draw(adaptor._snx_get_native()) - cam_adaptor = get_adaptor(view.camera) - cam_adaptor._set_view(adaptor._vispy_viewbox) # type: ignore + self._views.append(view) + # FIXME: Allow customization + x = 0.0 + dx = float(self._canvas.size[0]) / len(self._views) + + for view in self._views: + view.layout.x = x + view.layout.y = 0 + view.layout.width = dx + view.layout.height = self._canvas.size[1] + x += dx + + self._grid.add_widget(get_adaptor(view)._snx_get_native()) + get_adaptor(view.camera)._set_view(view.layout.width, view.layout.height) # type:ignore + # adaptor = get_adaptor(view) + # self._grid.add_widget(adaptor._snx_get_native()) + # # HACK: Update view size by passing the existing camera + # self._grid._prepare_draw(adaptor._snx_get_native()) + # cam_adaptor = get_adaptor(view.camera) + # cam_adaptor._set_view(adaptor._vispy_viewbox) # type: ignore def _snx_set_width(self, arg: int) -> None: self._canvas.size = (self._canvas.size[0], arg) diff --git a/src/scenex/adaptors/_vispy/_image.py b/src/scenex/adaptors/_vispy/_image.py index 02f5c438..dbe8c9ec 100644 --- a/src/scenex/adaptors/_vispy/_image.py +++ b/src/scenex/adaptors/_vispy/_image.py @@ -28,6 +28,7 @@ def __init__(self, image: model.Image, **backend_kwargs: Any) -> None: ) self._snx_set_data(image.data) self._vispy_node.visible = True + self._vispy_node.interactive = True def _snx_set_transform(self, arg: Transform) -> None: # Offset accounting for vispy's pixel centers at half-integer locations diff --git a/src/scenex/adaptors/_vispy/_points.py b/src/scenex/adaptors/_vispy/_points.py index e5f19d5f..01932cd1 100644 --- a/src/scenex/adaptors/_vispy/_points.py +++ b/src/scenex/adaptors/_vispy/_points.py @@ -38,6 +38,7 @@ def __init__(self, points: model.Points, **backend_kwargs: Any) -> None: self._model = points self._vispy_node = vispy.scene.Markers( pos=np.asarray(points.coords), + size=points.size, symbol=points.symbol, scaling=points.scaling, # pyright: ignore antialias=points.antialias, # pyright: ignore @@ -45,6 +46,7 @@ def __init__(self, points: model.Points, **backend_kwargs: Any) -> None: edge_width=points.edge_width, face_color=points.face_color, ) + self._vispy_node.interactive = True def _snx_set_coords(self, coords: npt.NDArray) -> None: # TODO: Will this overwrite our other parameters? diff --git a/src/scenex/adaptors/_vispy/_view.py b/src/scenex/adaptors/_vispy/_view.py index c082cd99..edb2ddb3 100644 --- a/src/scenex/adaptors/_vispy/_view.py +++ b/src/scenex/adaptors/_vispy/_view.py @@ -84,10 +84,12 @@ def _snx_set_camera(self, cam: model.Camera) -> None: self._cam_adaptor = cast("_camera.Camera", get_adaptor(cam)) self._vispy_camera = self._cam_adaptor._vispy_node if hasattr(self, "_vispy_viewbox"): + # s = self._vispy_camera.transform.scale + # t = self._vispy_camera.transform.translate self._vispy_viewbox.camera = self._vispy_camera # Vispy camera transforms need knowledge of viewbox # (specifically, its size) - self._cam_adaptor._set_view(self._vispy_viewbox) + self._cam_adaptor._set_view(*self._vispy_viewbox.size) def _draw(self) -> None: self._vispy_viewbox.update() diff --git a/src/scenex/events/__init__.py b/src/scenex/events/__init__.py new file mode 100644 index 00000000..cf053115 --- /dev/null +++ b/src/scenex/events/__init__.py @@ -0,0 +1,5 @@ +"""The Scenex Event Abstraction.""" + +from .events import Event, MouseButton, MouseEvent, Ray, WheelEvent + +__all__ = ["Event", "MouseButton", "MouseEvent", "Ray", "WheelEvent"] diff --git a/src/scenex/events/_auto.py b/src/scenex/events/_auto.py new file mode 100644 index 00000000..9481692b --- /dev/null +++ b/src/scenex/events/_auto.py @@ -0,0 +1,150 @@ +from __future__ import annotations + +import importlib +import os +import sys +from enum import Enum +from typing import TYPE_CHECKING, cast + +if TYPE_CHECKING: + from collections.abc import Callable, Iterator + from typing import Any + + from scenex.events import Event + from scenex.model import Canvas + + +class EventFilter: + def uninstall(self) -> None: + """Uninstall the event filter.""" + raise NotImplementedError("This method should be implemented by subclasses.") + + pass + + +GUI_ENV_VAR = "NDV_GUI_FRONTEND" +"""Preferred GUI frontend. If not set, the first available GUI frontend is used.""" +_APP: App | None = None +"""Singleton instance of the current (GUI) application. Once set it shouldn't change.""" + + +class GuiFrontend(str, Enum): + """Enum of available GUI frontends. + + Attributes + ---------- + GLFW : str + [GLFW](https://www.glfw.org/) + QT : str + [PyQt5/PySide2/PyQt6/PySide6](https://doc.qt.io) + """ + + GLFW = "glfw" + QT = "qt" + + +GUI_PROVIDERS: dict[GuiFrontend, tuple[str, str]] = { + GuiFrontend.GLFW: ("scenex.events._glfw", "GlfwAppWrap"), + GuiFrontend.QT: ("scenex.events._qt", "QtAppWrap"), +} + + +class App: + """ + Base class for application wrappers. + + TODO: Where should this live? Probably doesn't belong in this repo... + """ + + def create_app(self) -> Any: + """Create the application instance, if not already created.""" + raise NotImplementedError("Must be implemented by subclasses.") + + def show(self, canvas: Any, visible: bool) -> None: + """Show or hide the canvas.""" + raise NotImplementedError("Must be implemented by subclasses.") + + def install_event_filter( + self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] + ) -> EventFilter: + raise NotImplementedError("Must be implemented by subclasses.") + + +def _running_apps() -> Iterator[GuiFrontend]: + """Return an iterator of running GUI applications.""" + for mod_name in ("PyQt5", "PySide2", "PySide6", "PyQt6"): + if mod := sys.modules.get(f"{mod_name}.QtWidgets"): + if ( + qapp := getattr(mod, "QApplication", None) + ) and qapp.instance() is not None: + yield GuiFrontend.QT + + # glfw provides no way to check if already running - this is a best guess. + if glfw := sys.modules.get("glfw"): + old, glfw.ERROR_REPORTING = glfw.ERROR_REPORTING, "exception" # type: ignore[attr-defined] + glfw_initialized = False + try: + glfw.get_monitors() + glfw_initialized = True + except glfw.GLFWError: + pass + + glfw.ERROR_REPORTING = old # type: ignore[attr-defined] + + if glfw_initialized: + yield GuiFrontend.GLFW + + +def _load_app(module: str, cls_name: str) -> App: + mod = importlib.import_module(module) + cls = getattr(mod, cls_name) + return cast("App", cls()) + + +def app() -> App: + """Return the active [`GuiFrontend`][ndv.views.GuiFrontend]. + + This is determined first by the `NDV_GUI_FRONTEND` environment variable, after which + known GUI providers are tried in order until one is found that is either already + running, or available. + """ + global _APP + if _APP is not None: + return _APP + + running = list(_running_apps()) + + # Try 1: Load a frontend explicitly requested by the user + requested = os.getenv(GUI_ENV_VAR, "").lower() + valid = {x.value for x in GuiFrontend} + if requested: + if requested not in valid: + raise ValueError( + f"Invalid GUI frontend: {requested!r}. Valid options: {valid}" + ) + # ensure the app is created for explicitly requested frontends + _APP = _load_app(*GUI_PROVIDERS[GuiFrontend(requested)]) + _APP.create_app() + return _APP + + # Try 2: Utilize an existing, running app + for key, provider in GUI_PROVIDERS.items(): + if key in running: + _APP = _load_app(*provider) + _APP.create_app() + return _APP + + # Try 3: Load an existing app + errors: list[tuple[str, BaseException]] = [] + for key, provider in GUI_PROVIDERS.items(): + try: + _APP = _load_app(*provider) + _APP.create_app() + return _APP + except Exception as e: + errors.append((key, e)) + + raise RuntimeError( # pragma: no cover + f"Could not find an appropriate GUI frontend: {valid!r}. Tried:\n\n" + + "\n".join(f"- {key}: {err}" for key, err in errors) + ) diff --git a/src/scenex/events/_glfw.py b/src/scenex/events/_glfw.py new file mode 100644 index 00000000..dafb7723 --- /dev/null +++ b/src/scenex/events/_glfw.py @@ -0,0 +1,143 @@ +from __future__ import annotations + +from typing import TYPE_CHECKING + +import glfw + +from scenex.events._auto import App, EventFilter +from scenex.events.events import MouseButton, MouseEvent, WheelEvent, _canvas_to_world + +if TYPE_CHECKING: + from collections.abc import Callable + from typing import Any + + from scenex import Canvas + from scenex.events.events import Event + +BUTTONMAP = { + glfw.MOUSE_BUTTON_LEFT: MouseButton.LEFT, + glfw.MOUSE_BUTTON_RIGHT: MouseButton.RIGHT, + glfw.MOUSE_BUTTON_MIDDLE: MouseButton.MIDDLE, +} + + +class GlfwEventFilter(EventFilter): + def __init__( + self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] + ) -> None: + self._canvas = model_canvas + self._filter_func = filter_func + self._active_button: MouseButton = MouseButton.NONE + self._window_id = self._guess_id(canvas) + # TODO: Maybe save the old callbacks? + glfw.set_cursor_pos_callback(self._window_id, self._cursor_pos_callback) + glfw.set_cursor_enter_callback( + self._window_id, self._cursor_enter_leave_callback + ) + glfw.set_mouse_button_callback(self._window_id, self._mouse_button_callback) + glfw.set_scroll_callback(self._window_id, self._mouse_scroll_callback) + self.pos = (0, 0) + + def _guess_id(self, canvas: Any) -> Any: + # vispy + if window := getattr(canvas, "_id", None): + return window + # rendercanvas + if window := getattr(canvas, "_window", None): + return window + + def uninstall(self) -> None: + raise NotImplementedError( + "Uninstalling GLFW event filters is not yet supported." + ) + + def _cursor_pos_callback(self, window: Any, xpos: float, ypos: float) -> None: + """Handle cursor position events.""" + canvas_pos = (xpos, ypos) + if ray := _canvas_to_world(self._canvas, canvas_pos): + self._filter_func( + MouseEvent( + type="move", + canvas_pos=canvas_pos, + world_ray=ray, + buttons=self._active_button, + ) + ) + + def _cursor_enter_leave_callback(self, window: Any, entered: int) -> None: + """Handle enter/leave events.""" + if entered: + # entered window + pass + else: + # left window + pass + + def _mouse_button_callback( + self, window: Any, button: int, action: int, mods: int + ) -> None: + pos = glfw.get_cursor_pos(window) + if not (ray := _canvas_to_world(self._canvas, pos)): + return + + # Mouse click event + if button in BUTTONMAP: + if action == glfw.PRESS: + self._active_button |= BUTTONMAP[button] + self._filter_func( + MouseEvent( + type="press", + canvas_pos=pos, + world_ray=ray, + buttons=self._active_button, + ) + ) + elif action == glfw.RELEASE: + self._active_button &= ~BUTTONMAP[button] + self._filter_func( + MouseEvent( + type="release", + canvas_pos=pos, + world_ray=ray, + buttons=self._active_button, + ) + ) + + def _mouse_scroll_callback( + self, window: Any, xoffset: float, yoffset: float + ) -> None: + pos = glfw.get_cursor_pos(window) + if not (ray := _canvas_to_world(self._canvas, pos)): + return + + # Mouse wheel event + self._filter_func( + WheelEvent( + type="scroll", + canvas_pos=pos, + world_ray=ray, + buttons=self._active_button, + # Rendercanvas uses 100x and that works nice :) + angle_delta=(xoffset * 100, yoffset * 100), + ) + ) + + +class GlfwAppWrap(App): + """Provider for GLFW.""" + + def create_app(self) -> Any: + glfw.init() + # Nothing really to return here... + return None + + def install_event_filter( + self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] + ) -> EventFilter: + return GlfwEventFilter(canvas, model_canvas, filter_func) + + def show(self, canvas: Any, visible: bool) -> None: + if visible: + glfw.show_window(canvas._id) + else: + glfw.hide_window(canvas._id) diff --git a/src/scenex/events/_qt.py b/src/scenex/events/_qt.py new file mode 100644 index 00000000..5688ee73 --- /dev/null +++ b/src/scenex/events/_qt.py @@ -0,0 +1,132 @@ +from __future__ import annotations + +import sys +from typing import TYPE_CHECKING, Any, ClassVar, cast + +from qtpy.QtCore import QEvent, QObject, Qt +from qtpy.QtGui import QMouseEvent, QWheelEvent +from qtpy.QtWidgets import QApplication, QWidget + +from scenex.events._auto import App, EventFilter +from scenex.events.events import MouseButton, MouseEvent, WheelEvent, _canvas_to_world + +if TYPE_CHECKING: + from collections.abc import Callable + from typing import Any + + from scenex import Canvas + from scenex.events import Event + + +class QtEventFilter(QObject, EventFilter): + def __init__( + self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] + ) -> None: + super(QObject, self).__init__() + self._canvas = canvas + self._model_canvas = model_canvas + self._filter_func = filter_func + self._active_button: MouseButton = MouseButton.NONE + + def eventFilter(self, a0: QObject | None = None, a1: QEvent | None = None) -> bool: + if isinstance(a0, QWidget) and isinstance(a1, QEvent): + if evt := self._convert_event(a1): + return self._filter_func(evt) + return False + + def uninstall(self) -> None: + self._canvas.removeEventFilter(self) + + def mouse_btn(self, btn: Any) -> MouseButton: + if btn == Qt.MouseButton.LeftButton: + return MouseButton.LEFT + if btn == Qt.MouseButton.RightButton: + return MouseButton.RIGHT + if btn == Qt.MouseButton.NoButton: + return MouseButton.NONE + + raise Exception(f"Qt mouse button {btn} is unknown") + + def _convert_event(self, qevent: QEvent) -> Event | None: + """Convert a QEvent to a SceneX Event.""" + if isinstance(qevent, QMouseEvent): + pos = qevent.position() + canvas_pos = (pos.x(), pos.y()) + if not (ray := _canvas_to_world(self._model_canvas, canvas_pos)): + return None + + etype = qevent.type() + btn = self.mouse_btn(qevent.button()) + if etype == QEvent.Type.MouseMove: + return MouseEvent( + type="move", + canvas_pos=canvas_pos, + world_ray=ray, + buttons=self._active_button, + ) + elif etype == QEvent.Type.MouseButtonDblClick: + self._active_button |= btn + return MouseEvent( + type="double_click", + canvas_pos=canvas_pos, + world_ray=ray, + buttons=self._active_button, + ) + elif etype == QEvent.Type.MouseButtonPress: + self._active_button |= btn + return MouseEvent( + type="press", + canvas_pos=canvas_pos, + world_ray=ray, + buttons=self._active_button, + ) + elif etype == QEvent.Type.MouseButtonRelease: + self._active_button &= ~btn + return MouseEvent( + type="release", + canvas_pos=canvas_pos, + world_ray=ray, + buttons=self._active_button, + ) + elif isinstance(qevent, QWheelEvent): + # TODO: Figure out the buttons + pos = qevent.position() + canvas_pos = (pos.x(), pos.y()) + if not (ray := _canvas_to_world(self._model_canvas, canvas_pos)): + return None + return WheelEvent( + type="wheel", + canvas_pos=canvas_pos, + world_ray=ray, + buttons=self._active_button, + angle_delta=(qevent.angleDelta().x(), qevent.angleDelta().y()), + ) + + return None + + +class QtAppWrap(App): + """Provider for PyQt5/PySide2/PyQt6/PySide6.""" + + _APP_INSTANCE: ClassVar[Any] = None + IPY_MAGIC_KEY = "qt" + + def create_app(self) -> Any: + if (qapp := QApplication.instance()) is None: + # otherwise create a new QApplication + # must be stored in a class variable to prevent garbage collection + QtAppWrap._APP_INSTANCE = qapp = QApplication(sys.argv) + qapp.setOrganizationName("ndv") + qapp.setApplicationName("ndv") + + return qapp + + def install_event_filter( + self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] + ) -> EventFilter: + f = QtEventFilter(canvas, model_canvas, filter_func) + cast("QWidget", canvas).installEventFilter(f) + return f + + def show(self, canvas: Any, visible: bool) -> None: + cast("QWidget", canvas).setVisible(visible) diff --git a/src/scenex/events/events.py b/src/scenex/events/events.py new file mode 100644 index 00000000..332cdefb --- /dev/null +++ b/src/scenex/events/events.py @@ -0,0 +1,146 @@ +from __future__ import annotations + +from dataclasses import dataclass +from enum import IntFlag, auto +from typing import TYPE_CHECKING, NamedTuple + +import numpy as np +import pylinalg as la + +# from scenex.model import Camera + +if TYPE_CHECKING: + from typing import Any + + from scenex.model import Canvas, Node, View + + +@dataclass +class Event: + """A general interaction event.""" + + # TODO: Enum? + type: str + + +class MouseButton(IntFlag): + """A general mouse interaction event.""" + + NONE = 0 + LEFT = auto() + MIDDLE = auto() + RIGHT = auto() + + +class Ray(NamedTuple): + """A ray passing through the world.""" + + origin: tuple[float, float, float] + direction: tuple[float, float, float] + + +@dataclass +class MouseEvent(Event): + """A general mouse interaction event.""" + + type: str + canvas_pos: tuple[float, float] + world_ray: Ray + # TODO: Enum? + # TODO: Just a MouseButton, you can AND the MouseButtons + buttons: MouseButton + + +@dataclass +class WheelEvent(MouseEvent): + """A mouse interaction event describing wheel movement.""" + + angle_delta: tuple[float, float] + + +def _handle_event(canvas: Canvas, event: Event) -> bool: + handled = False + if isinstance(event, MouseEvent): + if view := _containing_view(event.canvas_pos, canvas): + through: list[tuple[Node, float]] = [] + for child in view.scene.children: + if (d := child.passes_through(event.world_ray)) is not None: + through.append((child, d)) + + # FIXME: Consider only reporting the first? + # Or do we only report until we hit a node with opacity=1? + for node, _depth in sorted(through, key=lambda e: e[1]): + # Filter through parent scenes to child + handled |= _filter_through(event, node, node) + # No nodes in the view handled the event - pass it to the camera + if not handled and view.camera.interactive: + handled |= view.camera.filter_event(event, view.camera) + + return handled + + +def _containing_view(pos: tuple[float, float], canvas: Canvas) -> View | None: + for view in canvas.views: + if pos in view.layout: + return view + return None + + +def _filter_through(event: Any, node: Node, target: Node) -> bool: + """Filter the event through the scene graph to the target node.""" + # TODO: Suppose a scene is not interactive. If the node is interactive, should it + # receive the event? + + # First give this node a chance to filter the event. + if node.interactive and node.filter_event(event, target): + # Node filtered out the event, so we stop here. + return True + if (parent := node.parent) is None: + # Node did not filter out the event, and we've reached the top of the graph. + return False + # Recursively filter the event through node's parent. + return _filter_through(event, parent, target) + + +def _canvas_to_world(canvas: Canvas, canvas_pos: tuple[float, float]) -> Ray | None: + """Map XY canvas position (pixels) to XYZ coordinate in world space.""" + # Code adapted from: + # https://github.com/pygfx/pygfx/pull/753/files#diff-173d643434d575e67f8c0a5bf2d7ea9791e6e03a4e7a64aa5fa2cf4172af05cdR395 + view = _containing_view(canvas_pos, canvas) + if view is None: + return None + + # Get position relative to viewport + pos_rel = ( + canvas_pos[0] - view.layout.x, + canvas_pos[1] - view.layout.y, + ) + + width, height = view.layout.size + + # Convert position to Normalized Device Coordinates (NDC) - i.e., within [-1, 1] + x = pos_rel[0] / width * 2 - 1 + y = -(pos_rel[1] / height * 2 - 1) + pos_ndc = (x, y) + + # Note that the camera matrix is the matrix multiplication of: + # * The projection matrix, which projects local space (the rectangular + # bounds of the perspective camera) into NDC. + # * The view matrix, i.e. the transform positioning the camera in the world. + # The result is a matrix mapping world coordinates + camera_matrix = view.camera.projection @ view.camera.transform.inv().T + pos_diff = la.vec_transform(view.camera.transform.root[3, :3], camera_matrix.T) + # Unproject the canvas NDC coordinates into world space. + pos_world = la.vec_unproject(pos_ndc + pos_diff[:2], camera_matrix) + + # To find the direction of the ray, we find a unprojected point farther away + # and subtract the closer point. + pos_world_farther = la.vec_unproject(pos_ndc + pos_diff[:2], camera_matrix, depth=1) + direction = pos_world_farther - pos_world + direction = direction / np.linalg.norm(direction) + + ray = Ray( + origin=tuple(pos_world), + direction=tuple(direction), + ) + return ray diff --git a/src/scenex/model/_base.py b/src/scenex/model/_base.py index 672f1847..3a2a223c 100644 --- a/src/scenex/model/_base.py +++ b/src/scenex/model/_base.py @@ -39,7 +39,11 @@ class EventedBase(BaseModel): _model_id: uuid.UUID = PrivateAttr(default_factory=uuid.uuid4) - events: ClassVar[SignalGroupDescriptor] = SignalGroupDescriptor() + events: ClassVar[SignalGroupDescriptor] = SignalGroupDescriptor( + # NB: Need to avoid propagating events to parents who don't necessarily have the + # same fields. + connect_child_events=False + ) # note, strangely, for mypy reasons, # this configDict should not include extra="forbid" diff --git a/src/scenex/model/_layout.py b/src/scenex/model/_layout.py index f0433629..847a2d0a 100644 --- a/src/scenex/model/_layout.py +++ b/src/scenex/model/_layout.py @@ -74,3 +74,12 @@ def position(self) -> tuple[float, float]: def size(self) -> tuple[float, float]: """Return the width, height of the layout as a tuple.""" return self.width, self.height + + def __contains__(self, pos: tuple[float, float]) -> bool: + offset = self.padding + self.border_width + self.margin + + left = self.x + offset + right = self.x + self.width - offset + bottom = self.y + offset + top = self.y + self.height - offset + return left <= pos[0] and pos[0] <= right and bottom <= pos[1] and pos[1] <= top diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index 97bfa5bb..d9210f28 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -2,13 +2,18 @@ from typing import TYPE_CHECKING, Literal -from pydantic import Field, computed_field +import numpy as np +from pydantic import Field, PrivateAttr, computed_field +from scenex.events import Event, MouseButton, MouseEvent, Ray, WheelEvent +from scenex.model._transform import Transform from scenex.utils import projections from .node import Node if TYPE_CHECKING: + from collections.abc import Callable + from scenex.model._transform import Transform CameraType = Literal["panzoom", "perspective"] @@ -17,6 +22,62 @@ Position = Position2D | Position3D +class _DefaultCameraFilter: + def __init__(self) -> None: + self.drag_pos: tuple[float, float] | None = None + + def __call__(self, event: Event, node: Node) -> bool: + assert isinstance(node, Camera) + handled = False + + # FIXME: Probably doesn't work outside of panzoom camera + if isinstance(event, MouseEvent): + new_pos = event.world_ray.origin[:2] + + # Panning involves keeping a particular position underneath the cursor. + # That position is recorded on a left mouse button press. + if event.type == "press" and MouseButton.LEFT in event.buttons: + self.drag_pos = new_pos + # Every time the cursor is moved, until the left mouse button is released, + # We translate the camera such that the position is back under the cursor + # (i.e. under the world ray origin) + elif ( + event.type == "move" + and MouseButton.LEFT in event.buttons + and self.drag_pos + ): + dx = self.drag_pos[0] - new_pos[0] + dy = self.drag_pos[1] - new_pos[1] + node.transform = node.transform.translated((dx, dy)) + handled = True + + elif isinstance(event, WheelEvent): + # Zoom while keeping the position under the cursor fixed. + _dx, dy = event.angle_delta + if dy: + # Step 1: Adjust the projection matrix to zoom in or out. + zoom = 2 ** (dy * 0.001) # Magnifier stolen from pygfx + node.projection = node.projection.scaled((zoom, zoom, 1.0)) + + # Step 2: Adjust the transform matrix to maintain the position + # under the cursor. The math is largely borrowed from + # https://github.com/pygfx/pygfx/blob/520af2d5bb2038ec309ef645e4a60d502f00d181/pygfx/controllers/_panzoom.py#L164 + + # Find the distance between the world ray and the camera + zoom_center = np.asarray(event.world_ray.origin)[:2] + camera_center = np.asarray(node.transform.map((0, 0)))[:2] + # Compute the world distance before the zoom + delta_screen1 = zoom_center - camera_center + # Compute the world distance after the zoom + delta_screen2 = delta_screen1 * zoom + # The pan is the difference between the two + pan = (delta_screen2 - delta_screen1) / zoom + node.transform = node.transform.translated(pan) + handled = True + + return handled + + class Camera(Node): """A camera that defines the view and perspective of a scene. @@ -49,3 +110,10 @@ class Camera(Node): def bounding_box(self) -> None: # Prevent cameras from distorting scene bounding boxes return None + + _filter: Callable[[Event, Node], bool] | None = PrivateAttr( + default_factory=_DefaultCameraFilter + ) + + def passes_through(self, ray: Ray) -> float | None: + return None diff --git a/src/scenex/model/_nodes/image.py b/src/scenex/model/_nodes/image.py index 67426fc4..c2d16c85 100644 --- a/src/scenex/model/_nodes/image.py +++ b/src/scenex/model/_nodes/image.py @@ -1,11 +1,17 @@ -from typing import Annotated, Any, Literal +from __future__ import annotations +from typing import TYPE_CHECKING, Annotated, Any, Literal + +import numpy as np from annotated_types import Interval from cmap import Colormap from pydantic import Field, computed_field from .node import AABB, Node +if TYPE_CHECKING: + from scenex.events.events import Ray + InterpolationMode = Literal["nearest", "linear", "bicubic"] @@ -43,3 +49,86 @@ def bounding_box(self) -> AABB: mi = [-0.5 for _d in shape] + [0] * (3 - len(shape)) ma = [d - 0.5 for d in shape] + [0] * (3 - len(shape)) return (tuple(mi), tuple(ma)) # type: ignore + + def passes_through(self, ray: Ray) -> float | None: + origin = self.transform.map((0, 0, 0, 1))[:3] + u = self.transform.map((self.data.shape[0], 0, 0, 0))[:3] + v = self.transform.map((0, self.data.shape[1], 0, 0))[:3] + return _passes_through_parallelogram(ray, origin, u, v) + + +def _passes_through_parallelogram( + ray: Ray, origin: np.ndarray, u: np.ndarray, v: np.ndarray +) -> float | None: + """Determine whether a ray passes through a parallelogram defined by (origin, u, v). + + Parameters + ---------- + ray : Ray + The ray passing through the scene + origin : np.ndarray + A np.ndarray of shape (3,) representing the origin point of the parallelogram. + u : np.ndarray + A np.ndarray of shape (3,) representing the direction and length of one edge of + the parallelogram. + v : np.ndarray + A np.ndarray of shape (3,) representing the direction and length of another edge + of the parallelogram. Note that u and v should not be parallel. + + Returns + ------- + t: float | None + The depth t at which the ray intersects the node, or None if it never + intersects. + """ + # Math graciously adapted from: + # https://raytracing.github.io/books/RayTracingTheNextWeek.html#quadrilaterals + + # Step 1 - Determine where the ray intersects the image plane + + # The image plane is defined by the normal vector n=(a, b, c) and an offset (d) + # such that any point p=(x, y, z) on the plane satisfies np.dot(v, p) = d, or + # ax + by + cz + -d = 0. + + # In this case, the normal vector n can be found by the cross product of u and v + tformed = np.cross(u, v) + normal = tformed / np.linalg.norm(tformed) + # And we know that the origin of the image is on the plane. Using that point we can + # find d... + d = np.dot(normal, origin) + # ... and with d we can find the depth t at which the ray would intersect the plane. + # + # Note that our ray is defined by (ray.origin + ray.direction * t). + # This is just np.dot(normal, ray.origin + ray.direction * t) = d, + # rearranged to solve for t. + ray_normal_inner_product = np.dot(normal, ray.direction) + if ray_normal_inner_product == 0: + # Plane is parallel to the ray, so no intersection. + return None + t = (d - np.dot(normal, ray.origin)) / ray_normal_inner_product + # With our value of t, we can find the intersection point: + intersection = tuple( + a + t * b for a, b in zip(ray.origin, ray.direction, strict=False) + ) + + # Step 2 - Determine whether the ray hits the image. + + # We need to determine whether the planar intersection is within the image + # interval bounds. In other words, the intersection point should be within + # [0, magnitude(u)] units away from the image origin along the u axis and + # [0, magnitude(v)] units away from the image origin along the v axis. + offset = intersection - origin + + # We use some fancy math derived from the link above to convert offset into... + n = np.cross(u, v) + w = n / np.dot(n, n) + # ...the component of offset in direction of u... + alpha = np.dot(w, np.cross(offset, v)) + # ...and the component of offset in direction of v + beta = np.dot(w, np.cross(u, offset)) + + # Our ray passes through the image if alpha and beta are within [0, 1] + is_inside = alpha >= 0 and alpha <= 1 and beta >= 0 and beta <= 1 + + # If the ray passes through node, return the depth of the intersection. + return t if is_inside else None diff --git a/src/scenex/model/_nodes/node.py b/src/scenex/model/_nodes/node.py index 22d736c4..1f79693f 100644 --- a/src/scenex/model/_nodes/node.py +++ b/src/scenex/model/_nodes/node.py @@ -1,3 +1,5 @@ +from __future__ import annotations + import logging from collections.abc import Iterable, Iterator from typing import TYPE_CHECKING, Annotated, Any, ClassVar, TypeAlias, Union, cast @@ -20,9 +22,14 @@ from scenex.model._transform import Transform if TYPE_CHECKING: + from collections.abc import Callable, Iterable, Iterator + import numpy.typing as npt from typing_extensions import Self, TypedDict, Unpack + from scenex.events import Event + from scenex.events.events import Ray + from .camera import Camera from .image import Image from .points import Points @@ -31,7 +38,7 @@ class NodeKwargs(TypedDict, total=False): """TypedDict for Node kwargs.""" - parent: "Node | None" + parent: Node | None name: str | None visible: bool interactive: bool @@ -59,9 +66,9 @@ class Node(EventedBase): be used in place of Node. """ - parent: "Node | None" = Field(default=None, repr=False, exclude=True) + parent: Node | None = Field(default=None, repr=False, exclude=True) # see computed field below - _children: list["AnyNode"] = PrivateAttr(default_factory=list) + _children: list[AnyNode] = PrivateAttr(default_factory=list) name: str | None = Field(default=None, description="Name of the node.") visible: bool = Field(default=True, description="Whether this node is visible.") @@ -83,6 +90,17 @@ class Node(EventedBase): "frame of the parent.", ) + _filter: Callable[[Event, Node], bool] | None = PrivateAttr(default=None) + + def set_event_filter( + self, callable: Callable[[Event, Node], bool] | None + ) -> Callable[[Event, Node], bool] | None: + old, self._filter = self._filter, callable + return old + + def filter_event(self, event: Event, target: Node) -> bool: + return self._filter(event, target) if self._filter else False + model_config = ConfigDict(extra="forbid") child_added: ClassVar[Signal] = Signal(object) @@ -91,8 +109,8 @@ class Node(EventedBase): def __init__( self, *, - children: Iterable["Node | dict[str, Any]"] = (), - **data: "Unpack[NodeKwargs]", + children: Iterable[Node | dict[str, Any]] = (), + **data: Unpack[NodeKwargs], ) -> None: # prevent direct instantiation. # makes it easier to use NodeUnion without having to deal with self-reference. @@ -108,7 +126,7 @@ def __init__( @computed_field # type: ignore[prop-decorator] @property - def children(self) -> tuple["Node", ...]: + def children(self) -> tuple[Node, ...]: """Return a tuple of the children of this node.""" return tuple(self._children) @@ -126,27 +144,46 @@ def bounding_box(self) -> AABB | None: # FIXME: Should just validate in pydantic return (tuple(float(m) for m in mi), tuple(float(m) for m in ma)) # type: ignore - def add_child(self, child: "AnyNode") -> None: + def add_child(self, child: AnyNode) -> None: """Add a child node to this node.""" self._children.append(child) child.parent = cast("AnyNode", self) self.child_added.emit(child) - def remove_child(self, child: "AnyNode") -> None: + def remove_child(self, child: AnyNode) -> None: """Remove a child node from this node. Does not raise if child is missing.""" if child in self._children: self._children.remove(child) child.parent = None self.child_removed.emit(child) + def passes_through(self, ray: Ray) -> float | None: + """Returns the depth t at which the provided ray intersects this node. + + The ray, in this case, is defined by R(t) = ray_origin + ray_direction * t, + where t>=0 + + Parameters + ---------- + ray : Ray + The ray passing through the scene + + Returns + ------- + t: float | None + The depth t at which the ray intersects the node, or None if it never + intersects. + """ + raise RuntimeError("Must be implemented in subclasses") + @model_validator(mode="wrap") @classmethod def _validate_model( cls, value: Any, - handler: ModelWrapValidatorHandler["Self"], + handler: ModelWrapValidatorHandler[Self], info: ValidationInfo, - ) -> "Self": + ) -> Self: # Ensures that changing the parent of a node # also updates the children of the new/old parent. if isinstance(value, dict): @@ -158,7 +195,7 @@ def _validate_model( return result @staticmethod - def _update_parent_children(node: "Node", old_parent: "Node | None" = None) -> None: + def _update_parent_children(node: Node, old_parent: Node | None = None) -> None: """Remove the node from its old_parent and add it to its new parent.""" if (new_parent := node.parent) != old_parent: if new_parent is not None and node not in new_parent._children: @@ -183,7 +220,7 @@ def __contains__(self, item: object) -> bool: # below borrowed from vispy.scene.Node - def transform_to_node(self, other: "Node") -> Transform: + def transform_to_node(self, other: Node) -> Transform: """Return Transform that maps from coordinate frame of `self` to `other`. Note that there must be a _single_ path in the scenegraph that connects @@ -203,7 +240,7 @@ def transform_to_node(self, other: "Node") -> Transform: tforms = [n.transform for n in a[:-1]] + [n.transform.inv() for n in b] return Transform.chain(*tforms[::-1]) - def path_to_node(self, other: "Node") -> tuple[list["Node"], list["Node"]]: + def path_to_node(self, other: Node) -> tuple[list[Node], list[Node]]: """Return two lists describing the path from this node to another. Parameters @@ -247,7 +284,7 @@ def path_to_node(self, other: "Node") -> tuple[list["Node"], list["Node"]]: down = their_parents[: their_parents.index(common_parent)][::-1] return (up, down) - def iter_parents(self) -> Iterator["Node"]: + def iter_parents(self) -> Iterator[Node]: """Return list of parents starting from this node. The chain ends at the first node with no parents. diff --git a/src/scenex/model/_nodes/points.py b/src/scenex/model/_nodes/points.py index 23757a87..95b586c6 100644 --- a/src/scenex/model/_nodes/points.py +++ b/src/scenex/model/_nodes/points.py @@ -1,6 +1,6 @@ from __future__ import annotations -from typing import Annotated, Any, Literal +from typing import TYPE_CHECKING, Annotated, Any, Literal import numpy as np from annotated_types import Interval @@ -9,6 +9,9 @@ from .node import AABB, Node +if TYPE_CHECKING: + from scenex.events.events import Ray + SymbolName = Literal[ "disc", "arrow", @@ -37,7 +40,7 @@ class Points(Node): # numpy array of 2D/3D point centers, shape (N, 2) or (N, 3) coords: Any = Field(default=None, repr=False, exclude=True) size: Annotated[float, Interval(ge=0.5, le=100)] = Field( - default=10.0, description="The size of the points." + default=10.0, description="The diameter of the points." ) face_color: Color | None = Field( default=Color("white"), description="The color of the faces." @@ -64,3 +67,55 @@ def bounding_box(self) -> AABB: tuple(float(d) for d in np.min(arr, axis=0)), tuple(float(d) for d in np.max(arr, axis=0)), ) # type: ignore + + def passes_through(self, ray: Ray) -> float | None: + # Math graciously adapted from: + # https://raytracing.github.io/books/RayTracingInOneWeekend.html#addingasphere/ray-sphereintersection + + # Step 1 - Determine whether the ray passes through any points + + # Convert coords to a 3-dimensional numpy array + coords = np.asarray(self.coords) + if coords.ndim < len(ray.origin): + coords = np.pad( + self.coords, ((0, 0), (0, 1)), mode="constant", constant_values=0 + ) + # And then transform the points to world space + coords = self.transform.map(coords)[:, :3] + + # For each point, determine whether the ray passes through its sphere. + # + # The sphere is defined by the center n=(t, u, v) and a radius r such that any + # point p=(x, y, z) on the plane satisfies (t-x)^2 + (u-y)^2 + (v-z)^2 = r^2. + # Note that r is defined in our model as: + r = self.size / 2 + (self.edge_width if self.edge_width else 0) + # Note that our intersection point p could be any point along our ray, defined + # as (ray.origin + ray.direction * t). Substituting this definition into the + # sphere equation, yields a quadratic equation at^2 + bt + c = 0, where a, b, + # and c have the following definitions: + ray_diff = coords - ray.origin + a = np.dot(ray.direction, ray.direction) + b = -2 * np.dot(ray_diff, ray.direction) + c = np.sum(ray_diff * ray_diff, axis=1) - r**2 + + # And there is a sphere intersection if the equation's discriminant is + # non-negative: + discriminants = b**2 - 4 * a * c + intersecting_indices = np.where(discriminants >= 0)[0] + if not intersecting_indices.size: + return None + + # Step 2 - Determine the depth of intersection + + # We have (potentially) multiple points intersected by our ray, described + # by the variable t in our ray's definition. Let's focus on those: + b = b[intersecting_indices] + discriminants = discriminants[intersecting_indices] + # We only care about the closest such intersection, i.e. the smallest value of + # t. Thus, for each intersecting sphere we compute the one or two values of t + # where our ray intersects. Note that t = (-b +- sqrt(discriminant)) / 2a + pos_solutions = -b + np.sqrt(discriminants) / (2 * a) + neg_solutions = -b - np.sqrt(discriminants) / (2 * a) + + # return the smallest such value: + return float(np.hstack((pos_solutions, neg_solutions)).min()) diff --git a/src/scenex/model/_nodes/volume.py b/src/scenex/model/_nodes/volume.py index fdde12b9..6c4da9b1 100644 --- a/src/scenex/model/_nodes/volume.py +++ b/src/scenex/model/_nodes/volume.py @@ -1,10 +1,14 @@ -from typing import Literal +from __future__ import annotations + +from typing import TYPE_CHECKING, Literal from pydantic import Field, computed_field -from scenex.model._nodes.node import AABB +from .image import Image, _passes_through_parallelogram +from .node import AABB # noqa: TC001 -from .image import Image +if TYPE_CHECKING: + from scenex.events.events import Ray RenderMode = Literal["iso", "mip"] @@ -24,3 +28,32 @@ def bounding_box(self) -> AABB: # We can reuse the image version, but the first dimension needs to be swapped # To account for the ZYX convention. return ((bb[0][1], bb[0][2], bb[0][0]), (bb[1][1], bb[1][2], bb[1][0])) + + def passes_through(self, ray: Ray) -> float | None: + # The ray passes through our volume if it passes through any of the six faces + d, w, h = self.data.shape + + # We can describe each face using a parallelogram using: + # A point for the Top, Left, and Front faces + tlf = self.transform.map((0, 0, 0, 1))[:3] + # Or a point for the Bottom, Right, and Back faces + brb = self.transform.map((w, h, d, 1))[:3] + # As well as vectors describing the three edges eminating from tlf + u = self.transform.map((w, 0, 0, 0))[:3] + v = self.transform.map((0, h, 0, 0))[:3] + w = self.transform.map((0, 0, d, 0))[:3] + + faces = [ + # (origin, edge1, edge2) + (tlf, u, v), # front face + (tlf, v, w), # left face + (tlf, w, u), # top face + (brb, -u, -v), # back face + (brb, -v, -w), # right face + (brb, -w, -u), # bottom face + ] + # Compute the depths where the ray intersects each face + results = [_passes_through_parallelogram(ray, o, e1, e2) for o, e1, e2 in faces] + # And return the minimum depth in the case of multiple intersections. + depths = [r for r in results if r is not None] + return min(depths) if depths else None diff --git a/tests/model/_nodes/test_image.py b/tests/model/_nodes/test_image.py index 66f292eb..4956338f 100644 --- a/tests/model/_nodes/test_image.py +++ b/tests/model/_nodes/test_image.py @@ -1,16 +1,37 @@ +import cmap import numpy as np import pytest import scenex as snx +from scenex.events.events import Ray +from scenex.model._nodes.image import Image @pytest.fixture def image() -> snx.Image: return snx.Image( data=np.random.randint(0, 255, (100, 100), dtype=np.uint8), + cmap=cmap.Colormap("gray"), + clims=(0, 255), + gamma=1.0, + interpolation="nearest", ) def test_bounding_box(image: snx.Image) -> None: exp_bounding_box = np.asarray(((-0.5, -0.5, 0), (99.5, 99.5, 0))) assert np.array_equal(exp_bounding_box, image.bounding_box) + + +def test_passes_through(image: Image) -> None: + # Check a ray that passes through the image + ray = Ray(origin=(50, 50, 1), direction=(0, 0, -1)) + assert image.passes_through(ray) == 1 + + # Check a ray that does not pass through the image + ray = Ray(origin=(-50, -50, 1), direction=(0, 0, -1)) + assert image.passes_through(ray) is None + + # Check a ray that is perpendicular to the image + ray = Ray(origin=(50, 50, 1), direction=(-1, 0, 0)) + assert image.passes_through(ray) is None diff --git a/tests/test_zoom_to_fit.py b/tests/test_zoom_to_fit.py new file mode 100644 index 00000000..81574561 --- /dev/null +++ b/tests/test_zoom_to_fit.py @@ -0,0 +1,26 @@ +import numpy as np + +import scenex as snx + + +def test_zoom_to_fit_image() -> None: + view = snx.View( + blending="default", + scene=snx.Scene( + children=[ + snx.Image( + data=np.random.randint(0, 255, (100, 100)).astype(np.uint8), + ), + ], + ), + ) + snx.show(view) + + tform = view.camera.transform + assert tform == snx.Transform().translated((49.5, 49.5, 0)) + + proj = view.camera.projection + # FIXME: Is the z coordinate important? + # FIXME: Remove atol + # FIXME: Test entire matrix + assert np.allclose(np.diag(proj)[:2], np.asarray([0.018, 0.018]), atol=1e-3) From 4e686942ac1fabba75a7a449dfc0e5d1c917c27e Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 31 Jul 2025 15:57:16 -0500 Subject: [PATCH 030/120] CI matrix --- .github/workflows/ci.yml | 7 +- .gitignore | 2 + pyproject.toml | 22 +- tests/test_basic_scene.py | 31 +- uv.lock | 2402 ------------------------------------- 5 files changed, 35 insertions(+), 2429 deletions(-) delete mode 100644 uv.lock diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 6a578f66..0f6ac21c 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -34,16 +34,15 @@ jobs: extra_args: --all-files --verbose test: - name: test ${{ matrix.os }} py${{ matrix.python-version }} ${{ matrix.gfx }} + name: test ${{ matrix.os }} py${{ matrix.python-version }} ${{ matrix.gfx }} ${{ matrix.window }} runs-on: ${{ matrix.os }} - env: - UV_FROZEN: 1 strategy: fail-fast: false matrix: os: [ubuntu-latest, macos-latest, windows-latest] python-version: ["3.10", "3.11", "3.12", "3.13"] gfx: [pygfx, vispy] + window: [pyside, pyqt, glfw] steps: - uses: actions/checkout@v4 @@ -61,7 +60,7 @@ jobs: sudo apt install -y libegl1-mesa-dev libgl1-mesa-dri libxcb-xfixes0-dev mesa-vulkan-drivers - name: Install dependencies - run: uv sync --no-dev --group test --extra ${{ matrix.gfx }} ${{ matrix.python-version != '3.10' && '--extra imgui' || '' }} + run: uv sync --no-dev --group test --extra ${{ matrix.gfx }} --extra ${{matrix.window}} ${{ matrix.python-version != '3.10' && '--extra imgui' || '' }} - name: Test shell: bash diff --git a/.gitignore b/.gitignore index 13afad07..b24f8d65 100644 --- a/.gitignore +++ b/.gitignore @@ -109,3 +109,5 @@ ENV/ # IDE settings .vscode/ .idea/ + +uv.lock diff --git a/pyproject.toml b/pyproject.toml index c28e5e48..4803be6b 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -35,6 +35,25 @@ classifiers = [ dependencies = ["cmap>=0.5", "numpy>=1.24", "psygnal>=0.11.1", "pydantic>=2.10", "pylinalg"] [project.optional-dependencies] +pyqt = [ + "pyqt6 >=6.4,!=6.6", + "pyqt6 >=6.5.3; python_version >= '3.12'", + "qtpy >=2", + "superqt[iconify] >=0.7.2", +] +pyside = [ + # defer to superqt's pyside6 restrictions + "superqt[iconify,pyside6] >=0.7.2", + # https://github.com/pyapp-kit/ndv/issues/59 + "pyside6 ==6.6.3; sys_platform == 'win32'", + "numpy >=1.23,<2; sys_platform == 'win32'", # needed for pyside6.6 + "pyside6 >=6.4", + "pyside6 >=6.6; python_version >= '3.12'", + "qtpy >=2", +] +glfw= [ + "glfw" +] pygfx = ["pygfx>=0.9.0"] vispy = ["vispy>=0.15.0", "pyopengl"] imgui = [ @@ -43,7 +62,8 @@ imgui = [ ] [dependency-groups] -test = ["pytest>=8", "pytest-cov>=6", "PyQt6"] +test = ["pytest>=8", "pytest-cov>=6"] +testqt = [{ include-group = "test" }, "pytest-qt >=4.4"] docs = [ "mike>=2.1.3", "mkdocs>=1.6.1", diff --git a/tests/test_basic_scene.py b/tests/test_basic_scene.py index b13e18ab..1714a37f 100644 --- a/tests/test_basic_scene.py +++ b/tests/test_basic_scene.py @@ -1,11 +1,8 @@ from __future__ import annotations -import importlib -import importlib.util from typing import Any import numpy as np -import pytest import scenex as snx @@ -18,12 +15,6 @@ └── Camera """.strip() -BACKENDS = [] -if importlib.util.find_spec("vispy") is not None: - BACKENDS.append("vispy") -if importlib.util.find_spec("pygfx") is not None: - BACKENDS.append("pygfx") - def _obj_name(obj: Any) -> str: """Return the name of a backend node object. @@ -44,14 +35,12 @@ def _child_names(obj: Any) -> list[str]: return [_obj_name(child) for child in obj.children] -@pytest.mark.parametrize("backend", BACKENDS) -def test_basic_view(basic_view: snx.View, backend: str) -> None: - snx.show(basic_view, backend=backend) +def test_basic_view(basic_view: snx.View) -> None: + snx.show(basic_view) # make sure we've got the right backend - adaptors = basic_view._get_adaptors(backend=backend, create=False) + adaptors = basic_view._get_adaptors(create=False) assert adaptors - assert backend in type(adaptors[0]).__module__ assert isinstance(repr(basic_view), str) assert isinstance(basic_view.model_dump(), dict) @@ -61,21 +50,19 @@ def test_basic_view(basic_view: snx.View, backend: str) -> None: assert isinstance(ary, np.ndarray) -@pytest.mark.parametrize("backend", BACKENDS) -def test_view_tree_matches_native(basic_view: snx.View, backend: str) -> None: +def test_view_tree_matches_native(basic_view: snx.View) -> None: """Test that the structure of the tree generated by the model matches the structure of the tree generated by the native backend.""" - basic_view._get_adaptors(backend=backend, create=True) + basic_view._get_adaptors(create=True) model_tree = snx.util.tree_dict(basic_view.scene, obj_name=_obj_name) - native_scene = basic_view.scene._get_native(backend=backend) + native_scene = basic_view.scene._get_native() view_tree = snx.util.tree_dict(native_scene, obj_name=_obj_name) assert isinstance(view_tree, dict) assert model_tree == view_tree -@pytest.mark.parametrize("backend", BACKENDS) -def test_changing_parent_updates_adaptor(backend: str) -> None: +def test_changing_parent_updates_adaptor() -> None: """Test that changing the parent of a model object works, and emits events.""" # create a scene and a view scene1 = snx.Scene() @@ -83,8 +70,8 @@ def test_changing_parent_updates_adaptor(backend: str) -> None: img1 = snx.Image(data=np.random.randint(0, 255, (10, 10), dtype=np.uint8)) img2 = snx.Image(data=np.random.randint(0, 255, (10, 10), dtype=np.uint8)) - scene1_native = scene1._get_native(backend=backend, create=True) - 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{ url = "https://files.pythonhosted.org/packages/2e/54/647ade08bf0db230bfea292f893923872fd20be6ac6f53b2b936ba839d75/zipp-3.23.0-py3-none-any.whl", hash = "sha256:071652d6115ed432f5ce1d34c336c0adfd6a884660d1e9712a256d3d3bd4b14e", size = 10276, upload-time = "2025-06-08T17:06:38.034Z" }, -] From d4c32fc64bb1bf2f27957112efa9805fa266319f Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 31 Jul 2025 16:46:43 -0500 Subject: [PATCH 031/120] Get tests passing --- .github/workflows/ci.yml | 8 ++++---- .pre-commit-config.yaml | 2 +- pyproject.toml | 14 ++------------ src/scenex/adaptors/_auto.py | 2 +- src/scenex/events/_qt.py | 2 +- src/scenex/model/_base.py | 9 +++------ 6 files changed, 12 insertions(+), 25 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 0f6ac21c..99afa76f 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -34,7 +34,7 @@ jobs: extra_args: --all-files --verbose test: - name: test ${{ matrix.os }} py${{ matrix.python-version }} ${{ matrix.gfx }} ${{ matrix.window }} + name: test ${{ matrix.os }} py${{ matrix.python-version }} ${{ matrix.gfx }} ${{ matrix.canvas }} runs-on: ${{ matrix.os }} strategy: fail-fast: false @@ -42,7 +42,7 @@ jobs: os: [ubuntu-latest, macos-latest, windows-latest] python-version: ["3.10", "3.11", "3.12", "3.13"] gfx: [pygfx, vispy] - window: [pyside, pyqt, glfw] + canvas: [pyqt, glfw] steps: - uses: actions/checkout@v4 @@ -60,7 +60,7 @@ jobs: sudo apt install -y libegl1-mesa-dev libgl1-mesa-dri libxcb-xfixes0-dev mesa-vulkan-drivers - name: Install dependencies - run: uv sync --no-dev --group test --extra ${{ matrix.gfx }} --extra ${{matrix.window}} ${{ matrix.python-version != '3.10' && '--extra imgui' || '' }} + run: uv sync --no-dev --group test --extra ${{ matrix.gfx }} --extra ${{matrix.canvas}} ${{ matrix.python-version != '3.10' && '--extra imgui' || '' }} - name: Test shell: bash @@ -69,7 +69,7 @@ jobs: - name: Upload coverage uses: actions/upload-artifact@v4 with: - name: covreport-${{ matrix.os }}-py${{ matrix.python-version }}-${{ matrix.gfx }} + name: covreport-${{ matrix.os }}-py${{ matrix.python-version }}-${{ matrix.gfx }}-${{ matrix.canvas }} path: ./.coverage* include-hidden-files: true diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml index 61959a0d..b9ebb509 100644 --- a/.pre-commit-config.yaml +++ b/.pre-commit-config.yaml @@ -46,7 +46,7 @@ repos: language: system types_or: [python, pyi] require_serial: true - entry: uv run pyright + entry: uv run --active pyright - repo: https://github.com/crate-ci/typos rev: v1.34.0 diff --git a/pyproject.toml b/pyproject.toml index 4803be6b..e9786d37 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -32,7 +32,7 @@ classifiers = [ "Programming Language :: Python :: 3.13", "Typing :: Typed", ] -dependencies = ["cmap>=0.5", "numpy>=1.24", "psygnal>=0.11.1", "pydantic>=2.10", "pylinalg"] +dependencies = ["cmap>=0.5", "numpy>=2", "psygnal>=0.11.1", "pydantic>=2.10", "pylinalg"] [project.optional-dependencies] pyqt = [ @@ -41,16 +41,6 @@ pyqt = [ "qtpy >=2", "superqt[iconify] >=0.7.2", ] -pyside = [ - # defer to superqt's pyside6 restrictions - "superqt[iconify,pyside6] >=0.7.2", - # https://github.com/pyapp-kit/ndv/issues/59 - "pyside6 ==6.6.3; sys_platform == 'win32'", - "numpy >=1.23,<2; sys_platform == 'win32'", # needed for pyside6.6 - "pyside6 >=6.4", - "pyside6 >=6.6; python_version >= '3.12'", - "qtpy >=2", -] glfw= [ "glfw" ] @@ -149,7 +139,7 @@ module = ["rendercanvas.*"] follow_untyped_imports = true [[tool.mypy.overrides]] -module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*"] +module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*", "qtpy.*"] ignore_missing_imports = true [tool.pydantic-mypy] diff --git a/src/scenex/adaptors/_auto.py b/src/scenex/adaptors/_auto.py index 6b21084d..f601b737 100644 --- a/src/scenex/adaptors/_auto.py +++ b/src/scenex/adaptors/_auto.py @@ -41,7 +41,7 @@ def get_adaptor_registry(backend: KnownBackend | str | None = None) -> AdaptorRe def get_all_adaptors(obj: Any) -> Iterator[Adaptor]: - """Get all adaptors for the given object.""" + """Get all loaded adaptors for the given object.""" for mod_name in ["scenex.adaptors._vispy", "scenex.adaptors._pygfx"]: if mod := sys.modules.get(mod_name): reg = cast("AdaptorRegistry", mod.adaptors) diff --git a/src/scenex/events/_qt.py b/src/scenex/events/_qt.py index 5688ee73..d6f4a4b3 100644 --- a/src/scenex/events/_qt.py +++ b/src/scenex/events/_qt.py @@ -22,7 +22,7 @@ class QtEventFilter(QObject, EventFilter): def __init__( self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] ) -> None: - super(QObject, self).__init__() + super().__init__() self._canvas = canvas self._model_canvas = model_canvas self._filter_func = filter_func diff --git a/src/scenex/model/_base.py b/src/scenex/model/_base.py index 3a2a223c..08b1a1ef 100644 --- a/src/scenex/model/_base.py +++ b/src/scenex/model/_base.py @@ -83,13 +83,10 @@ def _get_adaptors( self, backend: str | None = None, create: bool = False ) -> list["Adaptor"]: """Get all adaptors for this model.""" - from scenex.adaptors import get_adaptor_registry, get_all_adaptors + from scenex.adaptors import get_adaptor_registry - if backend: - reg = get_adaptor_registry(backend=backend) - return [reg.get_adaptor(self, create=create)] - else: - return list(get_all_adaptors(self)) + reg = get_adaptor_registry(backend=backend) + return [reg.get_adaptor(self, create=create)] def _get_native(self, backend: str | None = None, create: bool = False) -> Any: """Get the native object for this model.""" From 8a0eebbc4813b18a98f2f6c4f403cb0df9c8dc97 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 4 Aug 2025 09:02:53 -0500 Subject: [PATCH 032/120] WIP: Jupyter events --- examples/notebook.ipynb | 167 ++++++++++++++++++++++++++++++++++ pyproject.toml | 12 ++- src/scenex/events/_auto.py | 10 ++ src/scenex/events/_glfw.py | 1 + src/scenex/events/_jupyter.py | 151 ++++++++++++++++++++++++++++++ 5 files changed, 338 insertions(+), 3 deletions(-) create mode 100644 examples/notebook.ipynb create mode 100644 src/scenex/events/_jupyter.py diff --git a/examples/notebook.ipynb b/examples/notebook.ipynb new file mode 100644 index 00000000..24f0607b --- /dev/null +++ b/examples/notebook.ipynb @@ -0,0 +1,167 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": null, + "id": "aa695816", + "metadata": { + "jupyter": { + "source_hidden": true + } + }, + "outputs": [], + "source": [ + "# /// script\n", + "# requires-python = \">=3.10\"\n", + "# dependencies = [\n", + "# \"imageio[tifffile]\",\n", + "# \"scenex[jupyter,pygfx]\",\n", + "# ]\n", + "# ///" + ] + }, + { + "cell_type": "code", + "execution_count": 1, + "id": "461399b0-e02d-43d9-9ede-c1aa6c180338", + "metadata": {}, + "outputs": [ + { + "data": { + "text/plain": [ + "'Using RemoteFrameBuffer widget'" + ] + }, + "metadata": {}, + "output_type": "display_data" + }, + { + "data": { + "application/vnd.jupyter.widget-view+json": { + "model_id": "a916868964934d2b8fca95a610f9e9b0", + "version_major": 2, + "version_minor": 0 + }, + "text/plain": [ + "RFBOutputContext()" + ] + }, + "metadata": {}, + "output_type": "display_data" + }, + { + "data": { + "text/plain": [ + "'Using Jupyter Event Filter'" + ] + }, + "metadata": {}, + "output_type": "display_data" + } + ], + "source": [ + "import scenex as snx\n", + "import numpy as np\n", + "import cmap\n", + "\n", + "\n", + "view = snx.View(\n", + " blending=\"default\",\n", + " scene=snx.Scene(\n", + " children=[\n", + " snx.Image(\n", + " data=np.random.randint(0, 255, (200, 200)).astype(np.uint8),\n", + " cmap=cmap.Colormap(\"viridis\"),\n", + " transform=snx.Transform().scaled((1.3, 0.5)).translated((-40, 20)),\n", + " clims=(0, 255),\n", + " opacity=0.7,\n", + " ),\n", + " snx.Points(\n", + " coords=np.random.randint(0, 200, (100, 2)).astype(np.uint8),\n", + " size=5,\n", + " face_color=cmap.Color(\"coral\"),\n", + " edge_color=cmap.Color(\"purple\"),\n", + " transform=snx.Transform().translated((0, -50)),\n", + " ),\n", + " ]\n", + " ),\n", + ")\n", + "\n", + "canvas = snx.show(view)\n", + "snx.run()" + ] + }, + { + "cell_type": "code", + "execution_count": 2, + "id": "455ebabe-c2c1-4366-9784-65e45def5aa2", + "metadata": {}, + "outputs": [ + { + "data": { + "application/vnd.jupyter.widget-view+json": { + "model_id": "6feb1d2165894a038e0fc80b4315f53f", + "version_major": 2, + "version_minor": 0 + }, + "text/html": [ + "
snapshot
" + ], + "text/plain": [ + "JupyterRenderCanvas(css_height='500.0px', css_width='500.0px')" + ] + }, + "execution_count": 2, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "canvas._get_native()" + ] + }, + { + "cell_type": "code", + "execution_count": 3, + "id": "fb96f975-aa05-4d8a-9f85-f4316293e05d", + "metadata": {}, + "outputs": [], + "source": [ + "def foo(event, node) -> bool:\n", + " print(\"lol\")\n", + " return False\n", + "\n", + "view.scene.children[0].set_event_filter(foo)" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "id": "dab7cd84-4ed7-4bfa-8711-a93752e07345", + "metadata": {}, + "outputs": [], + "source": [] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python 3 (ipykernel)", + "language": "python", + "name": "python3" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.13.1" + } + }, + "nbformat": 4, + "nbformat_minor": 5 +} diff --git a/pyproject.toml b/pyproject.toml index e9786d37..b186099a 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -35,15 +35,21 @@ classifiers = [ dependencies = ["cmap>=0.5", "numpy>=2", "psygnal>=0.11.1", "pydantic>=2.10", "pylinalg"] [project.optional-dependencies] +glfw= [ + "glfw" +] +jupyter = [ + "ipywidgets >=8.0.5", + "jupyter >=1.1", + "jupyter_rfb >=0.3.3", + "glfw >=2.4", +] pyqt = [ "pyqt6 >=6.4,!=6.6", "pyqt6 >=6.5.3; python_version >= '3.12'", "qtpy >=2", "superqt[iconify] >=0.7.2", ] -glfw= [ - "glfw" -] pygfx = ["pygfx>=0.9.0"] vispy = ["vispy>=0.15.0", "pyopengl"] imgui = [ diff --git a/src/scenex/events/_auto.py b/src/scenex/events/_auto.py index 9481692b..22bce152 100644 --- a/src/scenex/events/_auto.py +++ b/src/scenex/events/_auto.py @@ -37,15 +37,19 @@ class GuiFrontend(str, Enum): [GLFW](https://www.glfw.org/) QT : str [PyQt5/PySide2/PyQt6/PySide6](https://doc.qt.io) + JUPYTER : str + [JUPYTER](https://jupyter.org/) """ GLFW = "glfw" QT = "qt" + JUPYTER = "jupyter" GUI_PROVIDERS: dict[GuiFrontend, tuple[str, str]] = { GuiFrontend.GLFW: ("scenex.events._glfw", "GlfwAppWrap"), GuiFrontend.QT: ("scenex.events._qt", "QtAppWrap"), + GuiFrontend.JUPYTER: ("scenex.events._jupyter", "JupyterAppWrap"), } @@ -74,11 +78,17 @@ def _running_apps() -> Iterator[GuiFrontend]: """Return an iterator of running GUI applications.""" for mod_name in ("PyQt5", "PySide2", "PySide6", "PyQt6"): if mod := sys.modules.get(f"{mod_name}.QtWidgets"): + print(f"Found {mod}") if ( qapp := getattr(mod, "QApplication", None) ) and qapp.instance() is not None: yield GuiFrontend.QT + # Jupyter notebook + if (ipy := sys.modules.get("IPython")) and (shell := ipy.get_ipython()): + if shell.__class__.__name__ == "ZMQInteractiveShell": + yield GuiFrontend.JUPYTER + # glfw provides no way to check if already running - this is a best guess. if glfw := sys.modules.get("glfw"): old, glfw.ERROR_REPORTING = glfw.ERROR_REPORTING, "exception" # type: ignore[attr-defined] diff --git a/src/scenex/events/_glfw.py b/src/scenex/events/_glfw.py index dafb7723..d9515c8f 100644 --- a/src/scenex/events/_glfw.py +++ b/src/scenex/events/_glfw.py @@ -25,6 +25,7 @@ class GlfwEventFilter(EventFilter): def __init__( self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] ) -> None: + print("Using GLFW Event Filter") self._canvas = model_canvas self._filter_func = filter_func self._active_button: MouseButton = MouseButton.NONE diff --git a/src/scenex/events/_jupyter.py b/src/scenex/events/_jupyter.py new file mode 100644 index 00000000..585b661b --- /dev/null +++ b/src/scenex/events/_jupyter.py @@ -0,0 +1,151 @@ +from __future__ import annotations + +from types import MethodType +from typing import TYPE_CHECKING, Any + +from IPython.display import display +from jupyter_rfb import RemoteFrameBuffer + +from scenex.events._auto import App, EventFilter +from scenex.events.events import MouseButton, MouseEvent, WheelEvent, _canvas_to_world + +if TYPE_CHECKING: + from collections.abc import Callable + + from scenex import Canvas + from scenex.events.events import Event + + +class JupyterEventFilter(EventFilter): + def __init__( + self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] + ) -> None: + if not isinstance(canvas, RemoteFrameBuffer): + raise TypeError( + f"Expected canvas to be RemoteFrameBuffer, got {type(canvas)}" + ) + self._canvas = canvas + self._model_canvas = model_canvas + self._filter_func = filter_func + self._active_button: MouseButton = MouseButton.NONE + + self._old_event = self._canvas.handle_event + display("Using Jupyter Event Filter") + + def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: + display(ev) + nonlocal model_canvas + nonlocal filter_func + self._active_button = MouseButton.NONE + etype = ev["event_type"] + if etype == "pointer_move": + canvas_pos = (ev["x"], ev["y"]) + if world_ray := _canvas_to_world(model_canvas, canvas_pos): + filter_func( + MouseEvent( + type="move", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=self._active_button, + ) + ) + elif etype == "pointer_down": + canvas_pos = (ev["x"], ev["y"]) + self._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) + if world_ray := _canvas_to_world(model_canvas, canvas_pos): + filter_func( + MouseEvent( + type="press", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=self._active_button, + ) + ) + elif etype == "double_click": + btn = JupyterEventFilter.mouse_btn(ev["button"]) + canvas_pos = (ev["x"], ev["y"]) + if world_ray := _canvas_to_world(model_canvas, canvas_pos): + # Note that in Jupyter, a double_click event is not a pointer event + # and as such, we need to handle both press and release. See + # https://github.com/vispy/jupyter_rfb/blob/62831dd5a87bc19b4fd5f921d802ed21141e61ec/js/lib/widget.js#L270 + filter_func( + MouseEvent( + type="press", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=btn, + ) + ) + # Release + filter_func( + MouseEvent( + type="release", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=btn, + ) + ) + elif etype == "pointer_up": + canvas_pos = (ev["x"], ev["y"]) + self._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) + if world_ray := _canvas_to_world(model_canvas, canvas_pos): + filter_func( + MouseEvent( + type="release", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=self._active_button, + ) + ) + # elif etype == "wheel": + # if not intercepted: + # self._old_event(ev) + + self._canvas.handle_event = MethodType(_handle_event, self._canvas) + + @classmethod + def mouse_btn(cls, btn: Any) -> MouseButton: + if btn == 0: + return MouseButton.NONE + if btn == 1: + return MouseButton.LEFT + if btn == 2: + return MouseButton.RIGHT + if btn == 3: + return MouseButton.MIDDLE + + raise Exception(f"Jupyter mouse button {btn} is unknown") + + def uninstall(self) -> None: + self._canvas.handle_event = self._old_event + + def _on_wheel(self, event: dict) -> None: + pos = (event["x"], event["y"]) + ray = _canvas_to_world(self._model_canvas, pos) + self._filter_func( + WheelEvent( + type="wheel", + canvas_pos=pos, + world_ray=ray, + buttons=self._active_button, + angle_delta=(event["delta_x"], event["delta_y"]), + ) + ) + + +class JupyterAppWrap(App): + """Provider for Jupyter notebook.""" + + def create_app(self) -> Any: + # No explicit app needed for Jupyter + return None + + def install_event_filter( + self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] + ) -> EventFilter: + return JupyterEventFilter(canvas, model_canvas, filter_func) + + def show(self, canvas: Any, visible: bool) -> None: + if visible: + display("Showing!") + display(canvas) From a9c7a474e5c1b1b9d018a4f19b86cf142fc84b46 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 19 Aug 2025 11:43:29 -0500 Subject: [PATCH 033/120] More Jupyter work --- examples/notebook.ipynb | 73 ++++++++++++++++++++++------------- pyproject.toml | 4 +- src/scenex/events/_jupyter.py | 21 +++++----- src/scenex/events/events.py | 1 + 4 files changed, 58 insertions(+), 41 deletions(-) diff --git a/examples/notebook.ipynb b/examples/notebook.ipynb index 24f0607b..4d6e6910 100644 --- a/examples/notebook.ipynb +++ b/examples/notebook.ipynb @@ -2,7 +2,7 @@ "cells": [ { "cell_type": "code", - "execution_count": null, + "execution_count": 1, "id": "aa695816", "metadata": { "jupyter": { @@ -22,7 +22,7 @@ }, { "cell_type": "code", - "execution_count": 1, + "execution_count": 2, "id": "461399b0-e02d-43d9-9ede-c1aa6c180338", "metadata": {}, "outputs": [ @@ -38,7 +38,7 @@ { "data": { "application/vnd.jupyter.widget-view+json": { - "model_id": "a916868964934d2b8fca95a610f9e9b0", + "model_id": "d23a7c25ce1640a0865876f1101bfacc", "version_major": 2, "version_minor": 0 }, @@ -64,26 +64,27 @@ "import numpy as np\n", "import cmap\n", "\n", + "image = snx.Image(\n", + " data=np.random.randint(0, 255, (200, 200)).astype(np.uint8),\n", + " cmap=cmap.Colormap(\"viridis\"),\n", + " transform=snx.Transform().scaled((1.3, 0.5)).translated((-40, 20)),\n", + " clims=(0, 255),\n", + " opacity=0.7,\n", + " interactive=True,\n", + ")\n", + "points = snx.Points(\n", + " coords=np.random.randint(0, 200, (100, 2)).astype(np.uint8),\n", + " size=5,\n", + " face_color=cmap.Color(\"coral\"),\n", + " edge_color=cmap.Color(\"purple\"),\n", + " transform=snx.Transform().translated((0, -50)),\n", + " interactive=True,\n", + ")\n", "\n", "view = snx.View(\n", " blending=\"default\",\n", " scene=snx.Scene(\n", - " children=[\n", - " snx.Image(\n", - " data=np.random.randint(0, 255, (200, 200)).astype(np.uint8),\n", - " cmap=cmap.Colormap(\"viridis\"),\n", - " transform=snx.Transform().scaled((1.3, 0.5)).translated((-40, 20)),\n", - " clims=(0, 255),\n", - " opacity=0.7,\n", - " ),\n", - " snx.Points(\n", - " coords=np.random.randint(0, 200, (100, 2)).astype(np.uint8),\n", - " size=5,\n", - " face_color=cmap.Color(\"coral\"),\n", - " edge_color=cmap.Color(\"purple\"),\n", - " transform=snx.Transform().translated((0, -50)),\n", - " ),\n", - " ]\n", + " children=[image, points]\n", " ),\n", ")\n", "\n", @@ -93,25 +94,25 @@ }, { "cell_type": "code", - "execution_count": 2, + "execution_count": 3, "id": "455ebabe-c2c1-4366-9784-65e45def5aa2", "metadata": {}, "outputs": [ { "data": { "application/vnd.jupyter.widget-view+json": { - "model_id": "6feb1d2165894a038e0fc80b4315f53f", + "model_id": "7ab57db4041d4fbab704f1a3bfd7e19c", "version_major": 2, "version_minor": 0 }, "text/html": [ - "
snapshot
" + "
snapshot
" ], "text/plain": [ "JupyterRenderCanvas(css_height='500.0px', css_width='500.0px')" ] }, - "execution_count": 2, + "execution_count": 3, "metadata": {}, "output_type": "execute_result" } @@ -122,16 +123,34 @@ }, { "cell_type": "code", - "execution_count": 3, + "execution_count": 8, "id": "fb96f975-aa05-4d8a-9f85-f4316293e05d", "metadata": {}, - "outputs": [], + "outputs": [ + { + "data": { + "text/plain": [ + " bool>" + ] + }, + "execution_count": 8, + "metadata": {}, + "output_type": "execute_result" + } + ], "source": [ + "from IPython.display import display\n", + "import random\n", + "\n", + "random.seed(0xdeadbeef)\n", + "colors = [\"blue\", \"red\", \"yellow\", \"green\"]\n", + "\n", "def foo(event, node) -> bool:\n", - " print(\"lol\")\n", + " if isinstance(node, snx.Points):\n", + " node.face_color = colors[random.randint(0, len(colors) - 1)]\n", " return False\n", "\n", - "view.scene.children[0].set_event_filter(foo)" + "view.scene.children[1].set_event_filter(foo)" ] }, { diff --git a/pyproject.toml b/pyproject.toml index b186099a..c71c34c5 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -138,14 +138,14 @@ disallow_subclassing_any = false show_error_codes = true pretty = true plugins = ["pydantic.mypy"] -untyped_calls_exclude = ["rendercanvas"] +untyped_calls_exclude = ["rendercanvas", "IPython"] [[tool.mypy.overrides]] module = ["rendercanvas.*"] follow_untyped_imports = true [[tool.mypy.overrides]] -module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*", "qtpy.*"] +module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*", "qtpy.*", "IPython.*", "jupyter_rfb.*"] ignore_missing_imports = true [tool.pydantic-mypy] diff --git a/src/scenex/events/_jupyter.py b/src/scenex/events/_jupyter.py index 585b661b..4e8c6301 100644 --- a/src/scenex/events/_jupyter.py +++ b/src/scenex/events/_jupyter.py @@ -30,10 +30,8 @@ def __init__( self._active_button: MouseButton = MouseButton.NONE self._old_event = self._canvas.handle_event - display("Using Jupyter Event Filter") def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: - display(ev) nonlocal model_canvas nonlocal filter_func self._active_button = MouseButton.NONE @@ -121,16 +119,16 @@ def uninstall(self) -> None: def _on_wheel(self, event: dict) -> None: pos = (event["x"], event["y"]) - ray = _canvas_to_world(self._model_canvas, pos) - self._filter_func( - WheelEvent( - type="wheel", - canvas_pos=pos, - world_ray=ray, - buttons=self._active_button, - angle_delta=(event["delta_x"], event["delta_y"]), + if ray := _canvas_to_world(self._model_canvas, pos): + self._filter_func( + WheelEvent( + type="wheel", + canvas_pos=pos, + world_ray=ray, + buttons=self._active_button, + angle_delta=(event["delta_x"], event["delta_y"]), + ) ) - ) class JupyterAppWrap(App): @@ -147,5 +145,4 @@ def install_event_filter( def show(self, canvas: Any, visible: bool) -> None: if visible: - display("Showing!") display(canvas) diff --git a/src/scenex/events/events.py b/src/scenex/events/events.py index 332cdefb..116896ac 100644 --- a/src/scenex/events/events.py +++ b/src/scenex/events/events.py @@ -92,6 +92,7 @@ def _filter_through(event: Any, node: Node, target: Node) -> bool: # receive the event? # First give this node a chance to filter the event. + if node.interactive and node.filter_event(event, target): # Node filtered out the event, so we stop here. return True From 3350069076eb9ed12485da49d00e16998aa81a2c Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 19 Aug 2025 15:39:26 -0500 Subject: [PATCH 034/120] More fixes --- examples/notebook.ipynb | 62 ++--------- src/scenex/adaptors/_base.py | 4 + src/scenex/adaptors/_pygfx/_canvas.py | 9 +- src/scenex/adaptors/_pygfx/_view.py | 2 +- src/scenex/adaptors/_vispy/_canvas.py | 5 +- src/scenex/events/_auto.py | 3 +- src/scenex/events/_glfw.py | 7 +- src/scenex/events/_jupyter.py | 147 ++++++++++++++------------ src/scenex/events/_qt.py | 5 +- 9 files changed, 114 insertions(+), 130 deletions(-) diff --git a/examples/notebook.ipynb b/examples/notebook.ipynb index 4d6e6910..a186eeea 100644 --- a/examples/notebook.ipynb +++ b/examples/notebook.ipynb @@ -38,7 +38,7 @@ { "data": { "application/vnd.jupyter.widget-view+json": { - "model_id": "d23a7c25ce1640a0865876f1101bfacc", + "model_id": "1424c053157f4436b40f7bd82bac3c05", "version_major": 2, "version_minor": 0 }, @@ -51,8 +51,16 @@ }, { "data": { + "application/vnd.jupyter.widget-view+json": { + "model_id": "9d9099a23d8c4fb793597155806ecb41", + "version_major": 2, + "version_minor": 0 + }, + "text/html": [ + "
snapshot
" + ], "text/plain": [ - "'Using Jupyter Event Filter'" + "JupyterRenderCanvas(css_height='500.0px', css_width='500.0px')" ] }, "metadata": {}, @@ -95,49 +103,9 @@ { "cell_type": "code", "execution_count": 3, - "id": "455ebabe-c2c1-4366-9784-65e45def5aa2", - "metadata": {}, - "outputs": [ - { - "data": { - "application/vnd.jupyter.widget-view+json": { - "model_id": "7ab57db4041d4fbab704f1a3bfd7e19c", - "version_major": 2, - "version_minor": 0 - }, - "text/html": [ - "
snapshot
" - ], - "text/plain": [ - "JupyterRenderCanvas(css_height='500.0px', css_width='500.0px')" - ] - }, - "execution_count": 3, - "metadata": {}, - "output_type": "execute_result" - } - ], - "source": [ - "canvas._get_native()" - ] - }, - { - "cell_type": "code", - "execution_count": 8, "id": "fb96f975-aa05-4d8a-9f85-f4316293e05d", "metadata": {}, - "outputs": [ - { - "data": { - "text/plain": [ - " bool>" - ] - }, - "execution_count": 8, - "metadata": {}, - "output_type": "execute_result" - } - ], + "outputs": [], "source": [ "from IPython.display import display\n", "import random\n", @@ -152,14 +120,6 @@ "\n", "view.scene.children[1].set_event_filter(foo)" ] - }, - { - "cell_type": "code", - "execution_count": null, - "id": "dab7cd84-4ed7-4bfa-8711-a93752e07345", - "metadata": {}, - "outputs": [], - "source": [] } ], "metadata": { diff --git a/src/scenex/adaptors/_base.py b/src/scenex/adaptors/_base.py index 9a385ae5..3b7b678c 100644 --- a/src/scenex/adaptors/_base.py +++ b/src/scenex/adaptors/_base.py @@ -173,6 +173,10 @@ def _snx_set_width(self, arg: int, /) -> None: ... def _snx_set_height(self, arg: int, /) -> None: ... @abstractmethod def _snx_set_background_color(self, arg: model.Color | None, /) -> None: ... + @abstractmethod + def _snx_get_window_ref(self) -> Any: + """Returns an object understood by the backend widget toolkit.""" + @abstractmethod def _snx_set_title(self, arg: str, /) -> None: ... @abstractmethod diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index 18f983e5..554fac68 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -62,10 +62,13 @@ def sizeHint(self) -> QSize: def _snx_get_native(self) -> BaseRenderCanvas: return self._wgpu_canvas + def _snx_get_window_ref(self) -> Any: + if window := getattr(self._wgpu_canvas, "_window", None): + return window + return self._wgpu_canvas + def _snx_set_visible(self, arg: bool) -> None: - # show the qt canvas we patched earlier in __init__ - if supports_hide_show(self._wgpu_canvas): - self._wgpu_canvas.show() + app().show(self, arg) self._wgpu_canvas.request_draw(self._draw) def _draw(self) -> None: diff --git a/src/scenex/adaptors/_pygfx/_view.py b/src/scenex/adaptors/_pygfx/_view.py index cb395ec1..51de9821 100644 --- a/src/scenex/adaptors/_pygfx/_view.py +++ b/src/scenex/adaptors/_pygfx/_view.py @@ -38,7 +38,7 @@ class View(ViewAdaptor): def __init__(self, view: model.View, **backend_kwargs: Any) -> None: self._model = view canvas_adaptor = cast("_canvas.Canvas", get_adaptor(view.canvas)) - wgpu_canvas = canvas_adaptor._snx_get_native() + wgpu_canvas = canvas_adaptor._wgpu_canvas self._renderer = pygfx.renderers.WgpuRenderer(wgpu_canvas) size = tuple(wgpu_canvas.get_logical_size()) self._rect = (0, 0, float(size[0]), float(size[1])) diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index 531b05c7..ab2a5216 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -52,9 +52,12 @@ def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: def _snx_get_native(self) -> Any: return self._canvas.native + def _snx_get_window_ref(self) -> Any: + return self._canvas.native + def _snx_set_visible(self, arg: bool) -> None: # show the qt canvas we patched earlier in __init__ - app().show(self._canvas.native, arg) + app().show(self, arg) def _draw(self) -> None: self._canvas.update() diff --git a/src/scenex/events/_auto.py b/src/scenex/events/_auto.py index 22bce152..4eae023c 100644 --- a/src/scenex/events/_auto.py +++ b/src/scenex/events/_auto.py @@ -10,6 +10,7 @@ from collections.abc import Callable, Iterator from typing import Any + from scenex.adaptors._base import CanvasAdaptor from scenex.events import Event from scenex.model import Canvas @@ -64,7 +65,7 @@ def create_app(self) -> Any: """Create the application instance, if not already created.""" raise NotImplementedError("Must be implemented by subclasses.") - def show(self, canvas: Any, visible: bool) -> None: + def show(self, canvas: CanvasAdaptor, visible: bool) -> None: """Show or hide the canvas.""" raise NotImplementedError("Must be implemented by subclasses.") diff --git a/src/scenex/events/_glfw.py b/src/scenex/events/_glfw.py index d9515c8f..deba1258 100644 --- a/src/scenex/events/_glfw.py +++ b/src/scenex/events/_glfw.py @@ -12,6 +12,7 @@ from typing import Any from scenex import Canvas + from scenex.adaptors._base import CanvasAdaptor from scenex.events.events import Event BUTTONMAP = { @@ -137,8 +138,8 @@ def install_event_filter( ) -> EventFilter: return GlfwEventFilter(canvas, model_canvas, filter_func) - def show(self, canvas: Any, visible: bool) -> None: + def show(self, canvas: CanvasAdaptor, visible: bool) -> None: if visible: - glfw.show_window(canvas._id) + glfw.show_window(canvas._snx_get_window_ref()) else: - glfw.hide_window(canvas._id) + glfw.hide_window(canvas._snx_get_window_ref()) diff --git a/src/scenex/events/_jupyter.py b/src/scenex/events/_jupyter.py index 4e8c6301..1273a643 100644 --- a/src/scenex/events/_jupyter.py +++ b/src/scenex/events/_jupyter.py @@ -1,9 +1,9 @@ from __future__ import annotations from types import MethodType -from typing import TYPE_CHECKING, Any +from typing import TYPE_CHECKING, Any, cast -from IPython.display import display +from IPython import display from jupyter_rfb import RemoteFrameBuffer from scenex.events._auto import App, EventFilter @@ -13,6 +13,7 @@ from collections.abc import Callable from scenex import Canvas + from scenex.adaptors._base import CanvasAdaptor from scenex.events.events import Event @@ -31,75 +32,79 @@ def __init__( self._old_event = self._canvas.handle_event - def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: - nonlocal model_canvas - nonlocal filter_func - self._active_button = MouseButton.NONE - etype = ev["event_type"] - if etype == "pointer_move": - canvas_pos = (ev["x"], ev["y"]) - if world_ray := _canvas_to_world(model_canvas, canvas_pos): - filter_func( - MouseEvent( - type="move", - canvas_pos=canvas_pos, - world_ray=world_ray, - buttons=self._active_button, + def _create_handler( + filter: JupyterEventFilter, + ) -> Callable[[RemoteFrameBuffer, dict], None]: + def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: + filter._active_button = MouseButton.NONE + etype = ev["event_type"] + if etype == "pointer_move": + canvas_pos = (ev["x"], ev["y"]) + if world_ray := _canvas_to_world(filter._model_canvas, canvas_pos): + filter._filter_func( + MouseEvent( + type="move", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=filter._active_button, + ) ) - ) - elif etype == "pointer_down": - canvas_pos = (ev["x"], ev["y"]) - self._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) - if world_ray := _canvas_to_world(model_canvas, canvas_pos): - filter_func( - MouseEvent( - type="press", - canvas_pos=canvas_pos, - world_ray=world_ray, - buttons=self._active_button, + elif etype == "pointer_down": + canvas_pos = (ev["x"], ev["y"]) + filter._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) + if world_ray := _canvas_to_world(filter._model_canvas, canvas_pos): + filter._filter_func( + MouseEvent( + type="press", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=filter._active_button, + ) ) - ) - elif etype == "double_click": - btn = JupyterEventFilter.mouse_btn(ev["button"]) - canvas_pos = (ev["x"], ev["y"]) - if world_ray := _canvas_to_world(model_canvas, canvas_pos): - # Note that in Jupyter, a double_click event is not a pointer event - # and as such, we need to handle both press and release. See - # https://github.com/vispy/jupyter_rfb/blob/62831dd5a87bc19b4fd5f921d802ed21141e61ec/js/lib/widget.js#L270 - filter_func( - MouseEvent( - type="press", - canvas_pos=canvas_pos, - world_ray=world_ray, - buttons=btn, + elif etype == "double_click": + btn = JupyterEventFilter.mouse_btn(ev["button"]) + canvas_pos = (ev["x"], ev["y"]) + if world_ray := _canvas_to_world(filter._model_canvas, canvas_pos): + # Note that in Jupyter, a double_click event is not a pointer + # event and as such, we need to handle both press and release. + # See + # https://github.com/vispy/jupyter_rfb/blob/62831dd5a87bc19b4fd5f921d802ed21141e61ec/js/lib/widget.js#L270 + filter._filter_func( + MouseEvent( + type="press", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=btn, + ) ) - ) - # Release - filter_func( - MouseEvent( - type="release", - canvas_pos=canvas_pos, - world_ray=world_ray, - buttons=btn, + # Release + filter._filter_func( + MouseEvent( + type="release", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=btn, + ) ) - ) - elif etype == "pointer_up": - canvas_pos = (ev["x"], ev["y"]) - self._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) - if world_ray := _canvas_to_world(model_canvas, canvas_pos): - filter_func( - MouseEvent( - type="release", - canvas_pos=canvas_pos, - world_ray=world_ray, - buttons=self._active_button, + elif etype == "pointer_up": + canvas_pos = (ev["x"], ev["y"]) + filter._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) + if world_ray := _canvas_to_world(filter._model_canvas, canvas_pos): + filter._filter_func( + MouseEvent( + type="release", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=filter._active_button, + ) ) - ) - # elif etype == "wheel": - # if not intercepted: - # self._old_event(ev) + # elif etype == "wheel": + # if not intercepted: + # self._old_event(ev) - self._canvas.handle_event = MethodType(_handle_event, self._canvas) + return _handle_event + + self._canvas.handle_event = MethodType(_create_handler(self), self._canvas) @classmethod def mouse_btn(cls, btn: Any) -> MouseButton: @@ -134,6 +139,9 @@ def _on_wheel(self, event: dict) -> None: class JupyterAppWrap(App): """Provider for Jupyter notebook.""" + def __init__(self) -> None: + self._visible_canvases: set[CanvasAdaptor] = set() + def create_app(self) -> Any: # No explicit app needed for Jupyter return None @@ -143,6 +151,9 @@ def install_event_filter( ) -> EventFilter: return JupyterEventFilter(canvas, model_canvas, filter_func) - def show(self, canvas: Any, visible: bool) -> None: - if visible: - display(canvas) + def show(self, canvas: CanvasAdaptor, visible: bool) -> None: + native_canvas = cast("RemoteFrameBuffer", canvas._snx_get_window_ref()) + if canvas not in self._visible_canvases: + self._visible_canvases.add(canvas) + display.display(native_canvas) + native_canvas.layout.display = "flex" if visible else "none" diff --git a/src/scenex/events/_qt.py b/src/scenex/events/_qt.py index d6f4a4b3..5c0839be 100644 --- a/src/scenex/events/_qt.py +++ b/src/scenex/events/_qt.py @@ -15,6 +15,7 @@ from typing import Any from scenex import Canvas + from scenex.adaptors._base import CanvasAdaptor from scenex.events import Event @@ -128,5 +129,5 @@ def install_event_filter( cast("QWidget", canvas).installEventFilter(f) return f - def show(self, canvas: Any, visible: bool) -> None: - cast("QWidget", canvas).setVisible(visible) + def show(self, canvas: CanvasAdaptor, visible: bool) -> None: + cast("QWidget", canvas._snx_get_window_ref()).setVisible(visible) From d9da36925a0ae5734f51cc0dba859f1f3aacb033 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 19 Aug 2025 18:06:36 -0500 Subject: [PATCH 035/120] Wx event filter Nothing guaranteed to work :) --- pyproject.toml | 6 +- src/scenex/adaptors/_auto.py | 4 +- src/scenex/adaptors/_base.py | 2 - .../adaptors/_pygfx/_adaptor_registry.py | 5 - src/scenex/adaptors/_pygfx/_canvas.py | 52 +++++-- src/scenex/adaptors/_registry.py | 4 - .../adaptors/_vispy/_adaptor_registry.py | 5 - src/scenex/adaptors/_vispy/_image.py | 5 + src/scenex/adaptors/_vispy/_points.py | 1 + src/scenex/events/_auto.py | 64 +++++--- src/scenex/events/_wx.py | 147 ++++++++++++++++++ src/scenex/events/events.py | 1 + 12 files changed, 236 insertions(+), 60 deletions(-) create mode 100644 src/scenex/events/_wx.py diff --git a/pyproject.toml b/pyproject.toml index c71c34c5..f1851c23 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -50,6 +50,10 @@ pyqt = [ "qtpy >=2", "superqt[iconify] >=0.7.2", ] +wxpython = [ + "pyconify>=0.2.1", + "wxpython >=4.2.2", +] pygfx = ["pygfx>=0.9.0"] vispy = ["vispy>=0.15.0", "pyopengl"] imgui = [ @@ -145,7 +149,7 @@ module = ["rendercanvas.*"] follow_untyped_imports = true [[tool.mypy.overrides]] -module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*", "qtpy.*", "IPython.*", "jupyter_rfb.*"] +module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*", "qtpy.*", "IPython.*", "jupyter_rfb.*", "wx.*"] ignore_missing_imports = true [tool.pydantic-mypy] diff --git a/src/scenex/adaptors/_auto.py b/src/scenex/adaptors/_auto.py index f601b737..cb8c9be1 100644 --- a/src/scenex/adaptors/_auto.py +++ b/src/scenex/adaptors/_auto.py @@ -6,6 +6,8 @@ from contextlib import suppress from typing import TYPE_CHECKING, Any, Literal, TypeAlias, TypeGuard, cast, get_args +from scenex.events._auto import app + if TYPE_CHECKING: from collections.abc import Iterator @@ -83,4 +85,4 @@ def use(backend: KnownBackend | None = None) -> None: def run() -> None: """Enter the native GUI event loop.""" - get_adaptor_registry().start_event_loop() + app().run() diff --git a/src/scenex/adaptors/_base.py b/src/scenex/adaptors/_base.py index 3b7b678c..8871312d 100644 --- a/src/scenex/adaptors/_base.py +++ b/src/scenex/adaptors/_base.py @@ -182,8 +182,6 @@ def _snx_set_title(self, arg: str, /) -> None: ... @abstractmethod def _snx_close(self) -> None: ... @abstractmethod - def _snx_render(self) -> NDArray: ... - @abstractmethod def _snx_add_view(self, arg: model.View, /) -> None: ... def _snx_get_ipython_mimebundle( diff --git a/src/scenex/adaptors/_pygfx/_adaptor_registry.py b/src/scenex/adaptors/_pygfx/_adaptor_registry.py index 828955d9..29415ca1 100644 --- a/src/scenex/adaptors/_pygfx/_adaptor_registry.py +++ b/src/scenex/adaptors/_pygfx/_adaptor_registry.py @@ -4,11 +4,6 @@ class PygfxAdaptorRegistry(AdaptorRegistry): - def start_event_loop(self) -> None: - from rendercanvas.auto import loop - - loop.run() - def get_adaptor_class(self, obj: Any) -> type: from scenex.adaptors import _pygfx diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index 554fac68..6ec1fbec 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -3,7 +3,7 @@ from typing import TYPE_CHECKING, Any, TypeGuard, cast from scenex.adaptors._base import CanvasAdaptor -from scenex.events._auto import app +from scenex.events._auto import GuiFrontend, app, determine_app from scenex.events.events import _handle_event from ._adaptor_registry import get_adaptor @@ -26,27 +26,45 @@ def supports_hide_show(obj: Any) -> TypeGuard[SupportsHideShow]: return hasattr(obj, "show") and hasattr(obj, "hide") -class Canvas(CanvasAdaptor): - """Canvas interface for pygfx Backend.""" +def rendercanvas_class() -> type[BaseRenderCanvas]: + frontend = determine_app() + if frontend == GuiFrontend.QT: + from qtpy.QtCore import QSize # pyright: ignore[reportMissingImports] + from rendercanvas.auto import loop + from rendercanvas.qt import QRenderWidget - def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: - from rendercanvas.auto import RenderCanvas + class _QRenderWidget(QRenderWidget): + def sizeHint(self) -> QSize: + return QSize(self.width(), self.height()) + + loop._rc_init() + return _QRenderWidget + + if frontend == GuiFrontend.JUPYTER: + import rendercanvas.jupyter + + return rendercanvas.jupyter.JupyterRenderCanvas + if frontend == GuiFrontend.GLFW: + import rendercanvas.glfw - canvas_cls = RenderCanvas - # HACK: Qt - if canvas_cls.__module__.startswith("rendercanvas.qt"): - from qtpy.QtCore import QSize - from rendercanvas.auto import loop - from rendercanvas.qt import QRenderWidget + return rendercanvas.glfw.GlfwRenderCanvas + if frontend == GuiFrontend.WX: + # ...still not working + # import rendercanvas.wx + # return rendercanvas.wx.WxRenderWidget + from wgpu.gui.wx import WxWgpuCanvas - class _QRenderWidget(QRenderWidget): - def sizeHint(self) -> QSize: - return QSize(self.width(), self.height()) + return WxWgpuCanvas # type: ignore - loop._rc_init() - canvas_cls = _QRenderWidget + raise ValueError("No suitable render canvas found") + + +class Canvas(CanvasAdaptor): + """Canvas interface for pygfx Backend.""" + + def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: self._canvas = canvas - self._wgpu_canvas = canvas_cls() + self._wgpu_canvas = rendercanvas_class()() # FIXME: This seems to not work on my laptop, without external monitors. # The physical canvas size is still 625, 625... diff --git a/src/scenex/adaptors/_registry.py b/src/scenex/adaptors/_registry.py index 7915efca..1c9acac8 100644 --- a/src/scenex/adaptors/_registry.py +++ b/src/scenex/adaptors/_registry.py @@ -33,10 +33,6 @@ class AdaptorRegistry: def __init__(self) -> None: self._objects: dict[str, _base.Adaptor] = {} - def start_event_loop(self) -> None: - """Run the Application event loop.""" - raise NotImplementedError("This method should be implemented by the backend.") - def all(self) -> Iterator[_base.Adaptor]: """Return an iterator over all adaptors in the registry.""" yield from self._objects.values() diff --git a/src/scenex/adaptors/_vispy/_adaptor_registry.py b/src/scenex/adaptors/_vispy/_adaptor_registry.py index ed2b5b9d..ff33ab48 100644 --- a/src/scenex/adaptors/_vispy/_adaptor_registry.py +++ b/src/scenex/adaptors/_vispy/_adaptor_registry.py @@ -4,11 +4,6 @@ class VispyAdaptorRegistry(AdaptorRegistry): - def start_event_loop(self) -> None: - from vispy import app - - app.run() - def get_adaptor_class(self, obj: Any) -> type: from scenex.adaptors import _vispy diff --git a/src/scenex/adaptors/_vispy/_image.py b/src/scenex/adaptors/_vispy/_image.py index dbe8c9ec..f1f35073 100644 --- a/src/scenex/adaptors/_vispy/_image.py +++ b/src/scenex/adaptors/_vispy/_image.py @@ -37,15 +37,20 @@ def _snx_set_transform(self, arg: Transform) -> None: def _snx_set_cmap(self, arg: Colormap) -> None: self._vispy_node.cmap = arg.to_vispy() + self._vispy_node.update() def _snx_set_clims(self, arg: tuple[float, float] | None) -> None: self._vispy_node.clim = arg + self._vispy_node.update() def _snx_set_gamma(self, arg: float) -> None: self._vispy_node.gamma = arg + self._vispy_node.update() def _snx_set_interpolation(self, arg: model.InterpolationMode) -> None: self._vispy_node.interpolation = arg + self._vispy_node.update() def _snx_set_data(self, data: ArrayLike) -> None: self._vispy_node.set_data(data) + self._vispy_node.update() diff --git a/src/scenex/adaptors/_vispy/_points.py b/src/scenex/adaptors/_vispy/_points.py index 01932cd1..dc20ab30 100644 --- a/src/scenex/adaptors/_vispy/_points.py +++ b/src/scenex/adaptors/_vispy/_points.py @@ -98,3 +98,4 @@ def _update_vispy_data(self) -> None: edge_color=edge_color, edge_width=self._model.edge_width, ) + self._vispy_node.update() diff --git a/src/scenex/events/_auto.py b/src/scenex/events/_auto.py index 4eae023c..4e3da906 100644 --- a/src/scenex/events/_auto.py +++ b/src/scenex/events/_auto.py @@ -36,20 +36,26 @@ class GuiFrontend(str, Enum): ---------- GLFW : str [GLFW](https://www.glfw.org/) - QT : str - [PyQt5/PySide2/PyQt6/PySide6](https://doc.qt.io) JUPYTER : str [JUPYTER](https://jupyter.org/) + QT : str + [PyQt5/PySide2/PyQt6/PySide6](https://doc.qt.io) + WX : str + [WX](https://wxpython.org/) """ GLFW = "glfw" - QT = "qt" JUPYTER = "jupyter" + QT = "qt" + WX = "wx" GUI_PROVIDERS: dict[GuiFrontend, tuple[str, str]] = { GuiFrontend.GLFW: ("scenex.events._glfw", "GlfwAppWrap"), GuiFrontend.QT: ("scenex.events._qt", "QtAppWrap"), + GuiFrontend.WX: ("scenex.events._wx", "WxAppWrap"), + # Note that Jupyter should go last because it is a guess based on IPython + # which may be installed with the other frameworks as well. GuiFrontend.JUPYTER: ("scenex.events._jupyter", "JupyterAppWrap"), } @@ -65,6 +71,10 @@ def create_app(self) -> Any: """Create the application instance, if not already created.""" raise NotImplementedError("Must be implemented by subclasses.") + def run(self) -> None: + """Run the application.""" + raise NotImplementedError("Must be implemented by subclasses.") + def show(self, canvas: CanvasAdaptor, visible: bool) -> None: """Show or hide the canvas.""" raise NotImplementedError("Must be implemented by subclasses.") @@ -84,6 +94,9 @@ def _running_apps() -> Iterator[GuiFrontend]: qapp := getattr(mod, "QApplication", None) ) and qapp.instance() is not None: yield GuiFrontend.QT + # wx + if (wx := sys.modules.get("wx")) and wx.App.Get() is not None: + yield GuiFrontend.WX # Jupyter notebook if (ipy := sys.modules.get("IPython")) and (shell := ipy.get_ipython()): @@ -112,17 +125,7 @@ def _load_app(module: str, cls_name: str) -> App: return cast("App", cls()) -def app() -> App: - """Return the active [`GuiFrontend`][ndv.views.GuiFrontend]. - - This is determined first by the `NDV_GUI_FRONTEND` environment variable, after which - known GUI providers are tried in order until one is found that is either already - running, or available. - """ - global _APP - if _APP is not None: - return _APP - +def determine_app() -> GuiFrontend: running = list(_running_apps()) # Try 1: Load a frontend explicitly requested by the user @@ -133,25 +136,19 @@ def app() -> App: raise ValueError( f"Invalid GUI frontend: {requested!r}. Valid options: {valid}" ) - # ensure the app is created for explicitly requested frontends - _APP = _load_app(*GUI_PROVIDERS[GuiFrontend(requested)]) - _APP.create_app() - return _APP + return GuiFrontend(requested) # Try 2: Utilize an existing, running app - for key, provider in GUI_PROVIDERS.items(): + for key in GUI_PROVIDERS.keys(): if key in running: - _APP = _load_app(*provider) - _APP.create_app() - return _APP + return key # Try 3: Load an existing app errors: list[tuple[str, BaseException]] = [] for key, provider in GUI_PROVIDERS.items(): try: - _APP = _load_app(*provider) - _APP.create_app() - return _APP + _load_app(*provider) + return key except Exception as e: errors.append((key, e)) @@ -159,3 +156,20 @@ def app() -> App: f"Could not find an appropriate GUI frontend: {valid!r}. Tried:\n\n" + "\n".join(f"- {key}: {err}" for key, err in errors) ) + + +def app() -> App: + """Return the active [`GuiFrontend`][ndv.views.GuiFrontend]. + + This is determined first by the `NDV_GUI_FRONTEND` environment variable, after which + known GUI providers are tried in order until one is found that is either already + running, or available. + """ + global _APP + if _APP is not None: + return _APP + + # ensure the app is created for explicitly requested frontends + _APP = _load_app(*GUI_PROVIDERS[determine_app()]) + _APP.create_app() + return _APP diff --git a/src/scenex/events/_wx.py b/src/scenex/events/_wx.py new file mode 100644 index 00000000..32d0b2e9 --- /dev/null +++ b/src/scenex/events/_wx.py @@ -0,0 +1,147 @@ +from __future__ import annotations + +from typing import TYPE_CHECKING, Any + +import wx + +from scenex.events._auto import App, EventFilter +from scenex.events.events import MouseButton, MouseEvent, WheelEvent, _canvas_to_world + +if TYPE_CHECKING: + from collections.abc import Callable + + from scenex import Canvas + from scenex.adaptors._base import CanvasAdaptor + from scenex.events.events import Event + + +class WxEventFilter(EventFilter): + def __init__( + self, + canvas: wx.Window, + model_canvas: Canvas, + filter_func: Callable[[Event], bool], + ) -> None: + if swdg := getattr(canvas, "_subwidget", None): + canvas = swdg + + self._canvas = canvas + self._model_canvas = model_canvas + self._filter_func = filter_func + self._active_button: MouseButton = MouseButton.NONE + self._install_events() + + def _install_events(self) -> None: + self._canvas.Bind(wx.EVT_LEFT_DOWN, handler=self._on_mouse_down) + self._canvas.Bind(wx.EVT_LEFT_UP, handler=self._on_mouse_up) + self._canvas.Bind(wx.EVT_RIGHT_DOWN, handler=self._on_mouse_down) + self._canvas.Bind(wx.EVT_RIGHT_UP, handler=self._on_mouse_up) + self._canvas.Bind(wx.EVT_MIDDLE_DOWN, handler=self._on_mouse_down) + self._canvas.Bind(wx.EVT_MIDDLE_UP, handler=self._on_mouse_up) + self._canvas.Bind(wx.EVT_MOTION, handler=self._on_mouse_move) + self._canvas.Bind(wx.EVT_MOUSEWHEEL, handler=self._on_wheel) + + def uninstall(self) -> None: + self._canvas.Unbind(wx.EVT_LEFT_DOWN) + self._canvas.Unbind(wx.EVT_LEFT_UP) + self._canvas.Unbind(wx.EVT_RIGHT_DOWN) + self._canvas.Unbind(wx.EVT_RIGHT_UP) + self._canvas.Unbind(wx.EVT_MIDDLE_DOWN) + self._canvas.Unbind(wx.EVT_MIDDLE_UP) + self._canvas.Unbind(wx.EVT_MOTION) + self._canvas.Unbind(wx.EVT_MOUSEWHEEL) + + def _on_mouse_down(self, event: wx.MouseEvent) -> None: + btn = self._map_button(event) + self._active_button |= btn + pos = event.GetPosition() + if ray := _canvas_to_world(self._model_canvas, (pos.x, pos.y)): + self._filter_func( + MouseEvent( + type="press", + canvas_pos=(pos.x, pos.y), + world_ray=ray, + buttons=self._active_button, + ) + ) + event.Skip() + + def _on_mouse_up(self, event: wx.MouseEvent) -> None: + btn = self._map_button(event) + self._active_button &= ~btn + pos = event.GetPosition() + if ray := _canvas_to_world(self._model_canvas, (pos.x, pos.y)): + self._filter_func( + MouseEvent( + type="release", + canvas_pos=(pos.x, pos.y), + world_ray=ray, + buttons=self._active_button, + ) + ) + event.Skip() + + def _on_mouse_move(self, event: wx.MouseEvent) -> None: + pos = event.GetPosition() + print(pos) + if ray := _canvas_to_world(self._model_canvas, (pos.x, pos.y)): + self._filter_func( + MouseEvent( + type="move", + canvas_pos=(pos.x, pos.y), + world_ray=ray, + buttons=self._active_button, + ) + ) + event.Skip() + + def _on_wheel(self, event: wx.MouseEvent) -> None: + pos = event.GetPosition() + if ray := _canvas_to_world(self._model_canvas, (pos.x, pos.y)): + self._filter_func( + WheelEvent( + type="wheel", + canvas_pos=(pos.x, pos.y), + world_ray=ray, + buttons=self._active_button, + angle_delta=(event.GetWheelRotation(), 0), + ) + ) + event.Skip() + + def _map_button(self, event: wx.MouseEvent) -> MouseButton: + if event.LeftDown() or event.LeftUp(): + return MouseButton.LEFT + if event.RightDown() or event.RightUp(): + return MouseButton.RIGHT + if event.MiddleDown() or event.MiddleUp(): + return MouseButton.MIDDLE + return MouseButton.NONE + + +class WxAppWrap(App): + """Provider for wxPython.""" + + def create_app(self) -> Any: + return wx.App(False) + + def run(self) -> None: + app = wx.App.Get() or self.create_app() + + # if ipy_shell := self._ipython_shell(): + # # if we're already in an IPython session with %gui qt, don't block + # if str(ipy_shell.active_eventloop).startswith("wx"): + # return + + app.MainLoop() + + def install_event_filter( + self, + canvas: wx.Window, + model_canvas: Canvas, + filter_func: Callable[[Event], bool], + ) -> EventFilter: + return WxEventFilter(canvas, model_canvas, filter_func) + + def show(self, canvas: CanvasAdaptor, visible: bool) -> None: + canvas._snx_get_window_ref().Show(visible) diff --git a/src/scenex/events/events.py b/src/scenex/events/events.py index 116896ac..4a491648 100644 --- a/src/scenex/events/events.py +++ b/src/scenex/events/events.py @@ -76,6 +76,7 @@ def _handle_event(canvas: Canvas, event: Event) -> bool: if not handled and view.camera.interactive: handled |= view.camera.filter_event(event, view.camera) + canvas._get_adaptors() return handled From 18cae3e051817970f4c021286155946e1592da69 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 19 Aug 2025 18:17:52 -0500 Subject: [PATCH 036/120] Adjust matrix to add jupyter, wx --- .github/workflows/ci.yml | 21 +++++++++++++++++++-- pyproject.toml | 3 +-- 2 files changed, 20 insertions(+), 4 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 99afa76f..8388691a 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -40,9 +40,26 @@ jobs: fail-fast: false matrix: os: [ubuntu-latest, macos-latest, windows-latest] - python-version: ["3.10", "3.11", "3.12", "3.13"] + python-version: ["3.10", "3.13"] gfx: [pygfx, vispy] - canvas: [pyqt, glfw] + canvas: [pyqt, glfw, jupyter, wx] + exclude: + # glfw.GLFWError: (65545) b'NSGL: Failed to find a suitable pixel format' + - os: macos-latest + canvas: glfw + # wxpython does not build wheels for ubuntu or macos-latest py3.10 + - os: ubuntu-latest + gui: wxpython + - os: macos-latest + gui: wxpython + python-version: "3.10" + # include + # - python-version: 3.11 + # gfx: pygfx + # canvas: pyqt + # - python-version: 3.12 + # gfx: pygfx + # canvas: pyqt steps: - uses: actions/checkout@v4 diff --git a/pyproject.toml b/pyproject.toml index f1851c23..6691308c 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -50,8 +50,7 @@ pyqt = [ "qtpy >=2", "superqt[iconify] >=0.7.2", ] -wxpython = [ - "pyconify>=0.2.1", +wx= [ "wxpython >=4.2.2", ] pygfx = ["pygfx>=0.9.0"] From d4e293edd87e7c4f11afcb9f5d4aa8ecfc31eac0 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 08:41:06 -0500 Subject: [PATCH 037/120] More matrix changes --- .github/workflows/ci.yml | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 8388691a..10f822b6 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -53,13 +53,13 @@ jobs: - os: macos-latest gui: wxpython python-version: "3.10" - # include - # - python-version: 3.11 - # gfx: pygfx - # canvas: pyqt - # - python-version: 3.12 - # gfx: pygfx - # canvas: pyqt + include: + - python-version: 3.11 + gfx: pygfx + canvas: pyqt + # - python-version: 3.12 + # gfx: pygfx + # canvas: pyqt steps: - uses: actions/checkout@v4 From ab77dfa06b8fbd4f1f9f49b14dada645d69c0480 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 08:44:43 -0500 Subject: [PATCH 038/120] Remove --active from pyright pre-commit --- .pre-commit-config.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml index b9ebb509..61959a0d 100644 --- a/.pre-commit-config.yaml +++ b/.pre-commit-config.yaml @@ -46,7 +46,7 @@ repos: language: system types_or: [python, pyi] require_serial: true - entry: uv run --active pyright + entry: uv run pyright - repo: https://github.com/crate-ci/typos rev: v1.34.0 From 9a62b74f3725043e875a0eb8fd7b9fa64c655a4a Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 08:47:27 -0500 Subject: [PATCH 039/120] Fix ci matrix excludes --- .github/workflows/ci.yml | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 10f822b6..06a83f72 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -49,9 +49,9 @@ jobs: canvas: glfw # wxpython does not build wheels for ubuntu or macos-latest py3.10 - os: ubuntu-latest - gui: wxpython + canvas: wx - os: macos-latest - gui: wxpython + canvas: wx python-version: "3.10" include: - python-version: 3.11 From fd52597c65026a69acba779b82ada6a54c778d44 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 09:00:41 -0500 Subject: [PATCH 040/120] Why da matrix no work >:( --- .github/workflows/ci.yml | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 06a83f72..e686bba7 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -53,10 +53,10 @@ jobs: - os: macos-latest canvas: wx python-version: "3.10" - include: - - python-version: 3.11 - gfx: pygfx - canvas: pyqt + # include: + # - python-version: 3.11 + # gfx: pygfx + # canvas: pyqt # - python-version: 3.12 # gfx: pygfx # canvas: pyqt From 12697af919e9e23377cb441a79655fadc199c3bd Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 09:47:31 -0500 Subject: [PATCH 041/120] Remove glfw from jupyter extra Not sure why it was there, you can run scenex just fine in jupyter without it. Did add simplejpeg in as a dep though because otherwise jupyter_rfb complains that it has to use PNGs, which is apparently slower --- examples/notebook.ipynb | 6 +++--- pyproject.toml | 4 ++-- src/scenex/events/_jupyter.py | 24 ++++++++++++++++++++++-- 3 files changed, 27 insertions(+), 7 deletions(-) diff --git a/examples/notebook.ipynb b/examples/notebook.ipynb index a186eeea..bda97c15 100644 --- a/examples/notebook.ipynb +++ b/examples/notebook.ipynb @@ -38,7 +38,7 @@ { "data": { "application/vnd.jupyter.widget-view+json": { - "model_id": "1424c053157f4436b40f7bd82bac3c05", + "model_id": "967db5e8238049ae94a786da7c792dc6", "version_major": 2, "version_minor": 0 }, @@ -52,12 +52,12 @@ { "data": { "application/vnd.jupyter.widget-view+json": { - "model_id": "9d9099a23d8c4fb793597155806ecb41", + "model_id": "f90a17e1854d498ca3c2f8daa7aa34b9", "version_major": 2, "version_minor": 0 }, "text/html": [ - "
snapshot
" + "
snapshot
" ], "text/plain": [ "JupyterRenderCanvas(css_height='500.0px', css_width='500.0px')" diff --git a/pyproject.toml b/pyproject.toml index 6691308c..247e352c 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -42,7 +42,7 @@ jupyter = [ "ipywidgets >=8.0.5", "jupyter >=1.1", "jupyter_rfb >=0.3.3", - "glfw >=2.4", + "simplejpeg", # Otherwise jupyter_rfb will use PNG, which is apparently slower ] pyqt = [ "pyqt6 >=6.4,!=6.6", @@ -148,7 +148,7 @@ module = ["rendercanvas.*"] follow_untyped_imports = true [[tool.mypy.overrides]] -module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*", "qtpy.*", "IPython.*", "jupyter_rfb.*", "wx.*"] +module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*", "qtpy.*", "ipywidgets.*", "IPython.*", "jupyter", "jupyter_rfb.*", "wx.*"] ignore_missing_imports = true [tool.pydantic-mypy] diff --git a/src/scenex/events/_jupyter.py b/src/scenex/events/_jupyter.py index 1273a643..bcb3ec5b 100644 --- a/src/scenex/events/_jupyter.py +++ b/src/scenex/events/_jupyter.py @@ -142,9 +142,29 @@ class JupyterAppWrap(App): def __init__(self) -> None: self._visible_canvases: set[CanvasAdaptor] = set() + # def is_running(self) -> bool: + # if ipy_shell := self._ipython_shell(): + # return bool(ipy_shell.__class__.__name__ == "ZMQInteractiveShell") + # return False + def create_app(self) -> Any: - # No explicit app needed for Jupyter - return None + # if not self.is_running() and not os.getenv("PYTEST_CURRENT_TEST"): + # # if we got here, it probably means that someone used + # # NDV_GUI_FRONTEND=jupyter without actually being in a jupyter notebook + # # we allow it in tests, but not in normal usage. + # raise RuntimeError( # pragma: no cover + # "Jupyter is not running a notebook shell. Cannot create app." + # ) + + # No app creation needed... + # but make sure we can actually import the stuff we need + import ipywidgets # noqa: F401 + import jupyter # noqa: F401 + + def run(self) -> None: + """Run the application.""" + # No explicit run method needed for Jupyter + pass def install_event_filter( self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] From 3d3628cb64701c6fdb4656332331b164afb3696c Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 10:09:42 -0500 Subject: [PATCH 042/120] Try adding back 3.11/12 tests --- .github/workflows/ci.yml | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index e686bba7..0083887f 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -53,13 +53,15 @@ jobs: - os: macos-latest canvas: wx python-version: "3.10" - # include: - # - python-version: 3.11 - # gfx: pygfx - # canvas: pyqt - # - python-version: 3.12 - # gfx: pygfx - # canvas: pyqt + include: + - python-version: "3.11" + gfx: pygfx + canvas: pyqt + os: ubuntu-latest + - python-version: "3.12" + gfx: pygfx + canvas: pyqt + os: ubuntu-latest steps: - uses: actions/checkout@v4 From 5c2c7c1e2179fdb90f0cd374240e0ed7968ce38a Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 11:29:58 -0500 Subject: [PATCH 043/120] Use CallAfter to show window Fixes segfault on Windows 3.10, reproducible on my machine --- src/scenex/events/_wx.py | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/scenex/events/_wx.py b/src/scenex/events/_wx.py index 32d0b2e9..13f4be37 100644 --- a/src/scenex/events/_wx.py +++ b/src/scenex/events/_wx.py @@ -144,4 +144,6 @@ def install_event_filter( return WxEventFilter(canvas, model_canvas, filter_func) def show(self, canvas: CanvasAdaptor, visible: bool) -> None: - canvas._snx_get_window_ref().Show(visible) + window = canvas._snx_get_window_ref() + if window and window.IsOk(): + wx.CallAfter(window.Show, visible) From e01ac5e04bb6a526e73001b635b6010f314aebe4 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 12:17:34 -0500 Subject: [PATCH 044/120] Add a qt runner --- src/scenex/events/_qt.py | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/src/scenex/events/_qt.py b/src/scenex/events/_qt.py index 5c0839be..4d5f432c 100644 --- a/src/scenex/events/_qt.py +++ b/src/scenex/events/_qt.py @@ -122,6 +122,20 @@ def create_app(self) -> Any: return qapp + def run(self) -> None: + """Run the Qt event loop.""" + app = QApplication.instance() or self.create_app() + + for wdg in QApplication.topLevelWidgets(): + wdg.raise_() + + # if ipy_shell := self._ipython_shell(): + # # if we're already in an IPython session with %gui qt, don't block + # if str(ipy_shell.active_eventloop).startswith("qt"): + # return + + app.exec() + def install_event_filter( self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] ) -> EventFilter: From 3508a1766c058ef6df5f2c41369c0a45c1920a1e Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 13:46:40 -0500 Subject: [PATCH 045/120] Add interactive camera to basic scene example --- examples/basic_scene.py | 1 + 1 file changed, 1 insertion(+) diff --git a/examples/basic_scene.py b/examples/basic_scene.py index 9206ba05..3820db82 100644 --- a/examples/basic_scene.py +++ b/examples/basic_scene.py @@ -29,6 +29,7 @@ ), ] ), + camera=snx.Camera(interactive=True), ) # example of adding an object to a scene From 24d629e61e9517e8389b03ee5927b52238950a01 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 15:56:09 -0500 Subject: [PATCH 046/120] Use Camera instead of PerspectiveCamera --- src/scenex/adaptors/_pygfx/_camera.py | 19 ++----------------- src/scenex/adaptors/_pygfx/_view.py | 1 - 2 files changed, 2 insertions(+), 18 deletions(-) diff --git a/src/scenex/adaptors/_pygfx/_camera.py b/src/scenex/adaptors/_pygfx/_camera.py index 38a3f2e9..5e470a47 100644 --- a/src/scenex/adaptors/_pygfx/_camera.py +++ b/src/scenex/adaptors/_pygfx/_camera.py @@ -19,16 +19,12 @@ class Camera(Node, CameraAdaptor): """Adaptor for pygfx camera.""" - _pygfx_node: pygfx.PerspectiveCamera + _pygfx_node: pygfx.Camera pygfx_controller: pygfx.Controller def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: self._camera_model = camera - # FIXME: This won't always hold as the projection matrix changes. - # Once we have better controllers via event filters, the pygfx_controller - # field should disappear and the _pygfx_node should just be a pygfx.Camera. - self._pygfx_node = pygfx.OrthographicCamera() - self.pygfx_controller = pygfx.PanZoomController(self._pygfx_node) + self._pygfx_node = pygfx.Camera() self._pygfx_node.local.scale_y = -1 # don't think this is working... @@ -40,16 +36,5 @@ def _view_size(self) -> tuple[float, float] | None: logger.warning("'Camera._view_size' not implemented for pygfx") return None - def update_controller(self) -> None: - # This is called by the View Adaptor in the `_visit` method - # ... which is in turn called by the Canvas backend adaptor's `_animate` method - # i.e. the main render loop. - self.pygfx_controller.update_camera(self._pygfx_node) - - def set_viewport(self, viewport: pygfx.Viewport) -> None: - # This is used by the Canvas backend adaptor... - # and should perhaps be moved to the View Adaptor - self.pygfx_controller.add_default_event_handlers(viewport, self._pygfx_node) - def _snx_set_projection(self, arg: Transform) -> None: self._pygfx_node.projection_matrix = arg.root # pyright: ignore[reportAttributeAccessIssue] diff --git a/src/scenex/adaptors/_pygfx/_view.py b/src/scenex/adaptors/_pygfx/_view.py index 51de9821..a4113964 100644 --- a/src/scenex/adaptors/_pygfx/_view.py +++ b/src/scenex/adaptors/_pygfx/_view.py @@ -65,7 +65,6 @@ def _snx_set_scene(self, scene: model.Scene) -> None: def _snx_set_camera(self, cam: model.Camera) -> None: self._cam_adaptor = cast("_camera.Camera", get_adaptor(cam)) self._pygfx_cam = self._cam_adaptor._pygfx_node - self._cam_adaptor.pygfx_controller.register_events(self._renderer) def _draw(self) -> None: self._renderer.render(self._pygfx_scene, self._pygfx_cam, rect=self._rect) From 3e6fec4d09d664e3b64b93937240c0936f1bf180 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 20 Aug 2025 16:17:08 -0500 Subject: [PATCH 047/120] Fix VisPy canvas being vertically inverted --- src/scenex/adaptors/_vispy/_camera.py | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/src/scenex/adaptors/_vispy/_camera.py b/src/scenex/adaptors/_vispy/_camera.py index 218f0b2f..5cf61428 100644 --- a/src/scenex/adaptors/_vispy/_camera.py +++ b/src/scenex/adaptors/_vispy/_camera.py @@ -41,14 +41,11 @@ def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: self._from_NDC = Transform() self._vispy_node = vispy.scene.BaseCamera() - # FIXME: Compared to pygfx, the y-axis appears inverted. - # The line below does not help... - # self._vispy_node.flip = (False, True, False) def _set_view(self, w: float, h: float) -> None: - # map [-1, -1] to [0, 0] - # map [1, 1] to [w, h] - self._from_NDC = Transform().translated((1, 1)).scaled((w / 2, h / 2, 1)) + # map [-1, -1] to [0, h] + # map [1, 1] to [w, 0] + self._from_NDC = Transform().translated((1, -1)).scaled((w / 2, -h / 2, 1)) self._update_vispy_node_tform() From cb67a746b14e959efbb80573231df13b3e4a622c Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 21 Aug 2025 12:14:03 -0500 Subject: [PATCH 048/120] Add a slightly better error message for glfw run At some point we'll need a better event loop --- src/scenex/events/_glfw.py | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/scenex/events/_glfw.py b/src/scenex/events/_glfw.py index deba1258..bbecc453 100644 --- a/src/scenex/events/_glfw.py +++ b/src/scenex/events/_glfw.py @@ -133,6 +133,11 @@ def create_app(self) -> Any: # Nothing really to return here... return None + def run(self) -> None: + """Run the GLFW application.""" + # TODO + raise NotImplementedError("No, YOU run!") + def install_event_filter( self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] ) -> EventFilter: From f9e64e1c7510a5808820bd066e297f1abebd7c16 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 21 Aug 2025 12:14:44 -0500 Subject: [PATCH 049/120] WIP: Orbit camera controller --- src/scenex/events/controllers.py | 227 ++++++++++++++++++++++++++++++ src/scenex/model/_nodes/camera.py | 71 ++-------- 2 files changed, 236 insertions(+), 62 deletions(-) create mode 100644 src/scenex/events/controllers.py diff --git a/src/scenex/events/controllers.py b/src/scenex/events/controllers.py new file mode 100644 index 00000000..5df26e3f --- /dev/null +++ b/src/scenex/events/controllers.py @@ -0,0 +1,227 @@ +"""Controllers for camera nodes.""" + +import math + +import numpy as np +import pylinalg as la + +from scenex.events.events import Event, MouseButton, MouseEvent, WheelEvent +from scenex.model import Camera, Node +from scenex.model._transform import Transform + + +class OrbitController: + """ + Controller for orbiting a Camera node around a fixed point. + + Left mouse button: orbit/rotate. + Right mouse button: pan. + Wheel: zoom to point. + """ + + def __init__(self, center: tuple[float, float, float] = (0.0, 0.0, 0.0)) -> None: + self._drag_pos: tuple[float, float] | None = None + self._center = np.array(center, dtype=float) + self._azimuth = 0.0 + self._elevation = 0.0 + self._radius = 5.0 # Default distance from center + + def __call__(self, event: Event, node: Node) -> bool: + assert isinstance(node, Camera) + handled = False + + if isinstance(event, MouseEvent): + new_pos = event.canvas_pos + + # Start orbit on left mouse press + if event.type == "press" and MouseButton.LEFT in event.buttons: + self._drag_pos = new_pos + + # Orbit on mouse move with left button held + elif ( + event.type == "move" + and MouseButton.LEFT in event.buttons + and self._drag_pos + ): + # Azimuth angle is horizontal axis, elevation is vertical axis. + delta_azimuth = self._drag_pos[0] - new_pos[0] + # delta_elevation = self._drag_pos[1] - new_pos[1] + + up = la.vec_normalize( + node.projection.map((0, 1)) - node.projection.map((0, 0)) + )[:3] + + # quat_azimuth = la.quat_from_axis_angle(up, -delta_azimuth * 0.005) + # Suppose you want to rotate X degrees. Pass () + print(delta_azimuth) + quat_azimuth = la.quat_from_axis_angle( + up, -delta_azimuth * math.pi / 180 + ) + # quat_elevation = la.quat_from_axis_angle((1, 0, 0), -delta_elevation) + + position = la.vec_transform_quat( + node.transform.root[3, :3], + quat_azimuth, + ) + node.transform = Transform().translated(position) + self._drag_pos = new_pos + # print(position) + + # position = camera_state["position"] + # rotation = camera_state["rotation"] + # up = camera_state["reference_up"] + + # # Where is the camera looking at right now + # forward = la.vec_transform_quat((0, 0, -1), rotation) + + # # # Get a reference vector, that is orthogonal to up, in a deterministic way. + # # # Might need this if we ever want the azimuth + # # aligned_up = _get_axis_aligned_up_vector(up) + # # orthogonal_vec = np.cross(up, np.roll(aligned_up, 1)) + + # # Get current elevation, so we can clip it. + # # We don't need the azimuth. When we do, it'd need more care to get a proper 0..2pi range + # elevation = la.vec_angle(forward, up) - 0.5 * np.pi + + # # Apply boundaries to the elevation + # new_elevation = elevation + delta_elevation + # bounds = -89 * np.pi / 180, 89 * np.pi / 180 + # if new_elevation < bounds[0]: + # delta_elevation = bounds[0] - elevation + # elif new_elevation > bounds[1]: + # delta_elevation = bounds[1] - elevation + + # r_azimuth = la.quat_from_axis_angle(up, -delta_azimuth) + # r_elevation = la.quat_from_axis_angle((1, 0, 0), -delta_elevation) + + # # Get rotations + # rot1 = rotation + # rot2 = la.quat_mul(r_azimuth, la.quat_mul(rot1, r_elevation)) + + # # Calculate new position + # pos1 = position + # pos2target1 = self._get_target_vec(camera_state, rotation=rot1) + # pos2target2 = self._get_target_vec(camera_state, rotation=rot2) + # pos2 = pos1 + pos2target1 - pos2target2 + + # # Pan with right mouse button + # elif ( + # event.type == "move" + # and MouseButton.RIGHT in event.buttons + # and self._drag_pos + # ): + # dx = self._drag_pos[0] - new_pos[0] + # dy = self._drag_pos[1] - new_pos[1] + # node.transform = node.transform.translated((dx, dy)) + # handled = True + + # elif event.type == "press" and MouseButton.RIGHT in event.buttons: + # self._drag_pos = new_pos + + # elif event.type == "release" and MouseButton.RIGHT not in event.buttons: + # self._drag_pos = None + + # Zoom with wheel + elif isinstance(event, WheelEvent): + _dx, dy = event.angle_delta + if dy: + zoom = 2 ** (dy * 0.001) + self._radius /= zoom + self._orbit_camera(node) + handled = True + + return handled + + def _orbit_camera(self, node: Camera) -> None: + # Calculate camera position in spherical coordinates + r = self._radius + az = self._azimuth + el = self._elevation + # Spherical to Cartesian + x = r * math.cos(el) * math.sin(az) + y = r * math.sin(el) + z = r * math.cos(el) * math.cos(az) + pos = self._target + np.array([x, y, z]) + + # Look-at matrix: camera at pos, looking at target + up = np.array([0, 1, 0], dtype=float) + fwd = self._target - pos + fwd /= np.linalg.norm(fwd) + right = np.cross(up, fwd) + right /= np.linalg.norm(right) + up = np.cross(fwd, right) + + # Build rotation matrix + rot = np.eye(4) + rot[:3, 0] = right + rot[:3, 1] = up + rot[:3, 2] = fwd + + # Build transform matrix + node.transform = node.transform.translated(pos).rotated(rot) + + +class PanZoomController: + """ + Controller for handling pan and zoom interactions with a Camera node. + + This class enables intuitive mouse-based panning and zooming in a 2D scene. + It tracks mouse events to allow dragging (panning) the camera view and + scroll wheel events to zoom in and out, keeping the cursor position fixed + under the mouse during zoom. + """ + + def __init__(self) -> None: + self._drag_pos: tuple[float, float] | None = None + + def __call__(self, event: Event, node: Node) -> bool: + """Handle mouse and wheel events to pan/zoom the camera.""" + assert isinstance(node, Camera) + handled = False + + # FIXME: Probably doesn't work outside of panzoom camera + if isinstance(event, MouseEvent): + new_pos = event.world_ray.origin[:2] + + # Panning involves keeping a particular position underneath the cursor. + # That position is recorded on a left mouse button press. + if event.type == "press" and MouseButton.LEFT in event.buttons: + self._drag_pos = new_pos + # Every time the cursor is moved, until the left mouse button is released, + # We translate the camera such that the position is back under the cursor + # (i.e. under the world ray origin) + elif ( + event.type == "move" + and MouseButton.LEFT in event.buttons + and self._drag_pos + ): + dx = self._drag_pos[0] - new_pos[0] + dy = self._drag_pos[1] - new_pos[1] + node.transform = node.transform.translated((dx, dy)) + handled = True + + elif isinstance(event, WheelEvent): + # Zoom while keeping the position under the cursor fixed. + _dx, dy = event.angle_delta + if dy: + # Step 1: Adjust the projection matrix to zoom in or out. + zoom = 2 ** (dy * 0.001) # Magnifier stolen from pygfx + node.projection = node.projection.scaled((zoom, zoom, 1.0)) + + # Step 2: Adjust the transform matrix to maintain the position + # under the cursor. The math is largely borrowed from + # https://github.com/pygfx/pygfx/blob/520af2d5bb2038ec309ef645e4a60d502f00d181/pygfx/controllers/_panzoom.py#L164 + + # Find the distance between the world ray and the camera + zoom_center = np.asarray(event.world_ray.origin)[:2] + camera_center = np.asarray(node.transform.map((0, 0)))[:2] + # Compute the world distance before the zoom + delta_screen1 = zoom_center - camera_center + # Compute the world distance after the zoom + delta_screen2 = delta_screen1 * zoom + # The pan is the difference between the two + pan = (delta_screen2 - delta_screen1) / zoom + node.transform = node.transform.translated(pan) + handled = True + + return handled diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index d9210f28..a16bbecc 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -1,11 +1,9 @@ from __future__ import annotations -from typing import TYPE_CHECKING, Literal +from typing import TYPE_CHECKING, Any, Literal -import numpy as np from pydantic import Field, PrivateAttr, computed_field -from scenex.events import Event, MouseButton, MouseEvent, Ray, WheelEvent from scenex.model._transform import Transform from scenex.utils import projections @@ -14,6 +12,7 @@ if TYPE_CHECKING: from collections.abc import Callable + from scenex.events.events import Event, Ray from scenex.model._transform import Transform CameraType = Literal["panzoom", "perspective"] @@ -22,62 +21,6 @@ Position = Position2D | Position3D -class _DefaultCameraFilter: - def __init__(self) -> None: - self.drag_pos: tuple[float, float] | None = None - - def __call__(self, event: Event, node: Node) -> bool: - assert isinstance(node, Camera) - handled = False - - # FIXME: Probably doesn't work outside of panzoom camera - if isinstance(event, MouseEvent): - new_pos = event.world_ray.origin[:2] - - # Panning involves keeping a particular position underneath the cursor. - # That position is recorded on a left mouse button press. - if event.type == "press" and MouseButton.LEFT in event.buttons: - self.drag_pos = new_pos - # Every time the cursor is moved, until the left mouse button is released, - # We translate the camera such that the position is back under the cursor - # (i.e. under the world ray origin) - elif ( - event.type == "move" - and MouseButton.LEFT in event.buttons - and self.drag_pos - ): - dx = self.drag_pos[0] - new_pos[0] - dy = self.drag_pos[1] - new_pos[1] - node.transform = node.transform.translated((dx, dy)) - handled = True - - elif isinstance(event, WheelEvent): - # Zoom while keeping the position under the cursor fixed. - _dx, dy = event.angle_delta - if dy: - # Step 1: Adjust the projection matrix to zoom in or out. - zoom = 2 ** (dy * 0.001) # Magnifier stolen from pygfx - node.projection = node.projection.scaled((zoom, zoom, 1.0)) - - # Step 2: Adjust the transform matrix to maintain the position - # under the cursor. The math is largely borrowed from - # https://github.com/pygfx/pygfx/blob/520af2d5bb2038ec309ef645e4a60d502f00d181/pygfx/controllers/_panzoom.py#L164 - - # Find the distance between the world ray and the camera - zoom_center = np.asarray(event.world_ray.origin)[:2] - camera_center = np.asarray(node.transform.map((0, 0)))[:2] - # Compute the world distance before the zoom - delta_screen1 = zoom_center - camera_center - # Compute the world distance after the zoom - delta_screen2 = delta_screen1 * zoom - # The pan is the difference between the two - pan = (delta_screen2 - delta_screen1) / zoom - node.transform = node.transform.translated(pan) - handled = True - - return handled - - class Camera(Node): """A camera that defines the view and perspective of a scene. @@ -92,6 +35,12 @@ class Camera(Node): from the camera node into the world. """ + def __init__( + self, controller: Callable[[Event, Node], bool] | None = None, **kwargs: Any + ) -> None: + super().__init__(**kwargs) + self.set_event_filter(controller) + node_type: Literal["camera"] = "camera" interactive: bool = Field( @@ -111,9 +60,7 @@ def bounding_box(self) -> None: # Prevent cameras from distorting scene bounding boxes return None - _filter: Callable[[Event, Node], bool] | None = PrivateAttr( - default_factory=_DefaultCameraFilter - ) + _filter: Callable[[Event, Node], bool] | None = PrivateAttr(default=None) def passes_through(self, ray: Ray) -> float | None: return None From 122e2933b67121998f58127b4dd664ca1071c56e Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 21 Aug 2025 12:17:17 -0500 Subject: [PATCH 050/120] Write a better GLFW loop error message --- src/scenex/events/_glfw.py | 5 ++++- src/scenex/events/controllers.py | 4 ++++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/src/scenex/events/_glfw.py b/src/scenex/events/_glfw.py index bbecc453..75dac821 100644 --- a/src/scenex/events/_glfw.py +++ b/src/scenex/events/_glfw.py @@ -136,7 +136,10 @@ def create_app(self) -> Any: def run(self) -> None: """Run the GLFW application.""" # TODO - raise NotImplementedError("No, YOU run!") + raise NotImplementedError( + "GLFW event loop not implemented yet. In the meantime, " + "Uninstall GLFW and run another canvas framework." + ) def install_event_filter( self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] diff --git a/src/scenex/events/controllers.py b/src/scenex/events/controllers.py index 5df26e3f..12adcfa7 100644 --- a/src/scenex/events/controllers.py +++ b/src/scenex/events/controllers.py @@ -63,7 +63,11 @@ def __call__(self, event: Event, node: Node) -> bool: node.transform.root[3, :3], quat_azimuth, ) + node.transform = Transform().translated(position) + node.projection = node.projection @ la.mat_from_axis_angle( + up, delta_azimuth * math.pi / 180 + ) self._drag_pos = new_pos # print(position) From 8b28c93ffb0c152ce0bf607fd86be2b5d47f838c Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 21 Aug 2025 13:35:39 -0500 Subject: [PATCH 051/120] Orbit behavior --- src/scenex/events/controllers.py | 110 +++++++------------------------ 1 file changed, 25 insertions(+), 85 deletions(-) diff --git a/src/scenex/events/controllers.py b/src/scenex/events/controllers.py index 12adcfa7..6e1457c2 100644 --- a/src/scenex/events/controllers.py +++ b/src/scenex/events/controllers.py @@ -22,11 +22,10 @@ class OrbitController: def __init__(self, center: tuple[float, float, float] = (0.0, 0.0, 0.0)) -> None: self._drag_pos: tuple[float, float] | None = None self._center = np.array(center, dtype=float) - self._azimuth = 0.0 - self._elevation = 0.0 - self._radius = 5.0 # Default distance from center def __call__(self, event: Event, node: Node) -> bool: + """Handle mouse and wheel events to orbit the camera.""" + # TODO: Rigorous documentation assert isinstance(node, Camera) handled = False @@ -45,68 +44,37 @@ def __call__(self, event: Event, node: Node) -> bool: ): # Azimuth angle is horizontal axis, elevation is vertical axis. delta_azimuth = self._drag_pos[0] - new_pos[0] - # delta_elevation = self._drag_pos[1] - new_pos[1] + delta_elevation = self._drag_pos[1] - new_pos[1] up = la.vec_normalize( node.projection.map((0, 1)) - node.projection.map((0, 0)) )[:3] - # quat_azimuth = la.quat_from_axis_angle(up, -delta_azimuth * 0.005) - # Suppose you want to rotate X degrees. Pass () - print(delta_azimuth) + # Update position quat_azimuth = la.quat_from_axis_angle( up, -delta_azimuth * math.pi / 180 ) - # quat_elevation = la.quat_from_axis_angle((1, 0, 0), -delta_elevation) - + quat_elevation = la.quat_from_axis_angle( + (1, 0, 0), -delta_elevation * math.pi / 180 + ) position = la.vec_transform_quat( node.transform.root[3, :3], - quat_azimuth, + la.quat_mul(quat_azimuth, quat_elevation), ) - node.transform = Transform().translated(position) - node.projection = node.projection @ la.mat_from_axis_angle( + + # Update projection + quat_azimuth = la.quat_from_axis_angle( up, delta_azimuth * math.pi / 180 ) + quat_elevation = la.quat_from_axis_angle( + (1, 0, 0), delta_elevation * math.pi / 180 + ) + node.projection = node.projection @ la.mat_from_quat( + la.quat_mul(quat_azimuth, quat_elevation) + ) + # Update drag position self._drag_pos = new_pos - # print(position) - - # position = camera_state["position"] - # rotation = camera_state["rotation"] - # up = camera_state["reference_up"] - - # # Where is the camera looking at right now - # forward = la.vec_transform_quat((0, 0, -1), rotation) - - # # # Get a reference vector, that is orthogonal to up, in a deterministic way. - # # # Might need this if we ever want the azimuth - # # aligned_up = _get_axis_aligned_up_vector(up) - # # orthogonal_vec = np.cross(up, np.roll(aligned_up, 1)) - - # # Get current elevation, so we can clip it. - # # We don't need the azimuth. When we do, it'd need more care to get a proper 0..2pi range - # elevation = la.vec_angle(forward, up) - 0.5 * np.pi - - # # Apply boundaries to the elevation - # new_elevation = elevation + delta_elevation - # bounds = -89 * np.pi / 180, 89 * np.pi / 180 - # if new_elevation < bounds[0]: - # delta_elevation = bounds[0] - elevation - # elif new_elevation > bounds[1]: - # delta_elevation = bounds[1] - elevation - - # r_azimuth = la.quat_from_axis_angle(up, -delta_azimuth) - # r_elevation = la.quat_from_axis_angle((1, 0, 0), -delta_elevation) - - # # Get rotations - # rot1 = rotation - # rot2 = la.quat_mul(r_azimuth, la.quat_mul(rot1, r_elevation)) - - # # Calculate new position - # pos1 = position - # pos2target1 = self._get_target_vec(camera_state, rotation=rot1) - # pos2target2 = self._get_target_vec(camera_state, rotation=rot2) - # pos2 = pos1 + pos2target1 - pos2target2 # # Pan with right mouse button # elif ( @@ -126,44 +94,16 @@ def __call__(self, event: Event, node: Node) -> bool: # self._drag_pos = None # Zoom with wheel - elif isinstance(event, WheelEvent): - _dx, dy = event.angle_delta - if dy: - zoom = 2 ** (dy * 0.001) - self._radius /= zoom - self._orbit_camera(node) - handled = True + # elif isinstance(event, WheelEvent): + # _dx, dy = event.angle_delta + # if dy: + # zoom = 2 ** (dy * 0.001) + # self._radius /= zoom + # self._orbit_camera(node) + # handled = True return handled - def _orbit_camera(self, node: Camera) -> None: - # Calculate camera position in spherical coordinates - r = self._radius - az = self._azimuth - el = self._elevation - # Spherical to Cartesian - x = r * math.cos(el) * math.sin(az) - y = r * math.sin(el) - z = r * math.cos(el) * math.cos(az) - pos = self._target + np.array([x, y, z]) - - # Look-at matrix: camera at pos, looking at target - up = np.array([0, 1, 0], dtype=float) - fwd = self._target - pos - fwd /= np.linalg.norm(fwd) - right = np.cross(up, fwd) - right /= np.linalg.norm(right) - up = np.cross(fwd, right) - - # Build rotation matrix - rot = np.eye(4) - rot[:3, 0] = right - rot[:3, 1] = up - rot[:3, 2] = fwd - - # Build transform matrix - node.transform = node.transform.translated(pos).rotated(rot) - class PanZoomController: """ From 33617978d93a5e7cbe0947139abc9018ace41520 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 28 Aug 2025 07:36:11 -0500 Subject: [PATCH 052/120] WIP: Bad attempt --- examples/basic_scene.py | 3 +- examples/basic_volume.py | 21 ++++++-- src/scenex/events/controllers.py | 90 ++++++++++++-------------------- 3 files changed, 53 insertions(+), 61 deletions(-) diff --git a/examples/basic_scene.py b/examples/basic_scene.py index 3820db82..b2b3b410 100644 --- a/examples/basic_scene.py +++ b/examples/basic_scene.py @@ -2,6 +2,7 @@ import numpy as np import scenex as snx +from scenex.events.controllers import PanZoomController try: from scenex.imgui import add_imgui_controls @@ -29,7 +30,7 @@ ), ] ), - camera=snx.Camera(interactive=True), + camera=snx.Camera(controller=PanZoomController(), interactive=True), ) # example of adding an object to a scene diff --git a/examples/basic_volume.py b/examples/basic_volume.py index 5bce1001..62ee673c 100644 --- a/examples/basic_volume.py +++ b/examples/basic_volume.py @@ -1,6 +1,7 @@ import numpy as np import scenex as snx +from scenex.events.controllers import OrbitController from scenex.model._transform import Transform from scenex.utils import projections @@ -19,19 +20,31 @@ snx.Volume( data=data, clims=(data.min(), data.max()), - ), + ) ] ), + camera=snx.Camera( + interactive=True, + ), ) +# snx.use("vispy") snx.show(view) -# FIXME: Add a model-based "look at"/"zoom to fit" -view.camera.transform = Transform().translated((127.5, 127.5, 300)) +view.camera.transform = ( + Transform() + .rotated(90, (0, 1, 0)) + .rotated(90, (1, 0, 0)) + .translated((300 + 127.5, 127.5, 29.5)) +) view.camera.projection = projections.perspective( fov=70, - near=300, + near=1, far=1_000_000, # Just need something big ) +orbit_center = np.mean(view.scene.bounding_box, axis=0) +# orbit_center = (127.5, 127.5, 0) +view.camera.set_event_filter(OrbitController(orbit_center)) + snx.run() diff --git a/src/scenex/events/controllers.py b/src/scenex/events/controllers.py index 6e1457c2..bd9b22aa 100644 --- a/src/scenex/events/controllers.py +++ b/src/scenex/events/controllers.py @@ -30,6 +30,8 @@ def __call__(self, event: Event, node: Node) -> bool: handled = False if isinstance(event, MouseEvent): + # TODO: Pan with right click + # TODO: Zoom with wheel new_pos = event.canvas_pos # Start orbit on left mouse press @@ -40,67 +42,43 @@ def __call__(self, event: Event, node: Node) -> bool: elif ( event.type == "move" and MouseButton.LEFT in event.buttons - and self._drag_pos + and self._drag_pos is not None ): - # Azimuth angle is horizontal axis, elevation is vertical axis. - delta_azimuth = self._drag_pos[0] - new_pos[0] - delta_elevation = self._drag_pos[1] - new_pos[1] - - up = la.vec_normalize( - node.projection.map((0, 1)) - node.projection.map((0, 0)) - )[:3] - - # Update position - quat_azimuth = la.quat_from_axis_angle( - up, -delta_azimuth * math.pi / 180 - ) - quat_elevation = la.quat_from_axis_angle( - (1, 0, 0), -delta_elevation * math.pi / 180 - ) - position = la.vec_transform_quat( - node.transform.root[3, :3], - la.quat_mul(quat_azimuth, quat_elevation), + # Break down the camera transform relative to the orbit center + orbit_mat = node.transform.translated(-self._center) + position, rotation, scale = la.mat_decompose(orbit_mat.T) + # Phi is the angle from the positive z-axis (index 2) + # Theta is the angle from the positive y-axis (index 1) + r, phi, theta = la.vec_euclidean_to_spherical( + orbit_mat.map((0, 0, 0))[:3] ) - node.transform = Transform().translated(position) + # Azimuth is the angle (degrees) from the positive x-axis + azimuth = (theta * 180 / math.pi) - 90 + # Elevation is the angle (degrees) from the positive z-axis + elevation = phi * 180 / math.pi + print(f"r={r}, azimuth={azimuth}, elevation={elevation}") - # Update projection - quat_azimuth = la.quat_from_axis_angle( - up, delta_azimuth * math.pi / 180 - ) - quat_elevation = la.quat_from_axis_angle( - (1, 0, 0), delta_elevation * math.pi / 180 - ) - node.projection = node.projection @ la.mat_from_quat( - la.quat_mul(quat_azimuth, quat_elevation) + # Azimuth angle is horizontal axis, elevation is vertical axis. + d_azimuth = self._drag_pos[0] - new_pos[0] + d_elevation = self._drag_pos[1] - new_pos[1] + + new_elevation = max(0, min(180, elevation + d_elevation)) + + new_azimuth = azimuth - d_azimuth + # new_azimuth = azimuth + + node.transform = ( + Transform() + .scaled(scale) + .rotated(90, (0, 1, 0)) + .rotated(90, (1, 0, 0)) + .translated((r, 0, 0)) + .rotated(90 - new_elevation, (0, -1, 0)) + .rotated(new_azimuth, (0, 0, 1)) + .translated(self._center) ) - # Update drag position - self._drag_pos = new_pos - # # Pan with right mouse button - # elif ( - # event.type == "move" - # and MouseButton.RIGHT in event.buttons - # and self._drag_pos - # ): - # dx = self._drag_pos[0] - new_pos[0] - # dy = self._drag_pos[1] - new_pos[1] - # node.transform = node.transform.translated((dx, dy)) - # handled = True - - # elif event.type == "press" and MouseButton.RIGHT in event.buttons: - # self._drag_pos = new_pos - - # elif event.type == "release" and MouseButton.RIGHT not in event.buttons: - # self._drag_pos = None - - # Zoom with wheel - # elif isinstance(event, WheelEvent): - # _dx, dy = event.angle_delta - # if dy: - # zoom = 2 ** (dy * 0.001) - # self._radius /= zoom - # self._orbit_camera(node) - # handled = True + self._drag_pos = new_pos return handled From 1ceb14bbe903ef4151b6d1c2c787cdcf0edcc41c Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 28 Aug 2025 09:35:04 -0500 Subject: [PATCH 053/120] Orbit camera Finally --- examples/basic_volume.py | 12 ++-- src/scenex/events/controllers.py | 100 +++++++++++++++++++------------ 2 files changed, 69 insertions(+), 43 deletions(-) diff --git a/examples/basic_volume.py b/examples/basic_volume.py index 62ee673c..38be68d8 100644 --- a/examples/basic_volume.py +++ b/examples/basic_volume.py @@ -28,22 +28,26 @@ ), ) -# snx.use("vispy") +snx.use("vispy") snx.show(view) +# Orbit around the center of the volume +orbit_center = np.mean(np.asarray(view.scene.bounding_box), axis=0) + +# Place the camera along the x axis, looking at the orbit center +# TODO: Need a look at method view.camera.transform = ( Transform() .rotated(90, (0, 1, 0)) .rotated(90, (1, 0, 0)) - .translated((300 + 127.5, 127.5, 29.5)) + .translated((*orbit_center, 300, 0, 0)) ) +# Perspective projection for 3D view.camera.projection = projections.perspective( fov=70, near=1, far=1_000_000, # Just need something big ) -orbit_center = np.mean(view.scene.bounding_box, axis=0) -# orbit_center = (127.5, 127.5, 0) view.camera.set_event_filter(OrbitController(orbit_center)) diff --git a/src/scenex/events/controllers.py b/src/scenex/events/controllers.py index bd9b22aa..ceb775a5 100644 --- a/src/scenex/events/controllers.py +++ b/src/scenex/events/controllers.py @@ -7,21 +7,30 @@ from scenex.events.events import Event, MouseButton, MouseEvent, WheelEvent from scenex.model import Camera, Node -from scenex.model._transform import Transform class OrbitController: """ - Controller for orbiting a Camera node around a fixed point. + Orbits a Camera node around a fixed point. - Left mouse button: orbit/rotate. + Rotation direction follows pygfx precedent, where foreground objects (between the + camera and the center of rotation) move in the direction of mouse movement i.e. + foreground objects move right when the mouse moves right, and up when the mouse + moves up. + + Orbit controls define a polar axis (the Z axis in this case), and allow user + interaction to adjust the camera's angle around the polar axis (azimuth) and angle + to the polar axis (elevation). + + The left mouse button orbits/rotates the camera. Right mouse button: pan. Wheel: zoom to point. """ def __init__(self, center: tuple[float, float, float] = (0.0, 0.0, 0.0)) -> None: - self._drag_pos: tuple[float, float] | None = None - self._center = np.array(center, dtype=float) + self.center = np.array(center, dtype=float) + self.polar_axis = np.array((0.0, 0.0, 1.0), dtype=float) + self._last_pos: tuple[float, float] | None = None def __call__(self, event: Event, node: Node) -> bool: """Handle mouse and wheel events to orbit the camera.""" @@ -36,49 +45,62 @@ def __call__(self, event: Event, node: Node) -> bool: # Start orbit on left mouse press if event.type == "press" and MouseButton.LEFT in event.buttons: - self._drag_pos = new_pos + self._last_pos = new_pos # Orbit on mouse move with left button held elif ( event.type == "move" and MouseButton.LEFT in event.buttons - and self._drag_pos is not None + and self._last_pos is not None ): - # Break down the camera transform relative to the orbit center - orbit_mat = node.transform.translated(-self._center) - position, rotation, scale = la.mat_decompose(orbit_mat.T) - # Phi is the angle from the positive z-axis (index 2) - # Theta is the angle from the positive y-axis (index 1) - r, phi, theta = la.vec_euclidean_to_spherical( - orbit_mat.map((0, 0, 0))[:3] - ) - # Azimuth is the angle (degrees) from the positive x-axis - azimuth = (theta * 180 / math.pi) - 90 - # Elevation is the angle (degrees) from the positive z-axis - elevation = phi * 180 / math.pi - print(f"r={r}, azimuth={azimuth}, elevation={elevation}") - - # Azimuth angle is horizontal axis, elevation is vertical axis. - d_azimuth = self._drag_pos[0] - new_pos[0] - d_elevation = self._drag_pos[1] - new_pos[1] - - new_elevation = max(0, min(180, elevation + d_elevation)) - - new_azimuth = azimuth - d_azimuth - # new_azimuth = azimuth - + # The process of orbiting is as follows: + # 1. Compute the azimuth and elevation changes based on mouse movement. + # - Azimuth describes the angle between the the positive X axis and + # the projection of the camera's position onto the XY plane. + # - Elevation describes the angle between the camera's position and + # the positive Z axis. + # 2. Ensure these changes are clamped to valid ranges (only really + # applies to elevation). + # 3. Adjust the current transform by: + # a. Translating by the negative of the centerpoint, to take it out of + # the computation. + # b. Rotating to adjust the elevation. The axis of rotation is defined + # by the camera's right vector. Note that this is done before the + # azimuth adjustment because that adjustment will alter the + # camera's right vector. + # c. Rotating to adjust the azimuth. The axis of rotation is always + # the positive Z axis. + # d. Translating by the centerpoint, to reorient the camera around + # that centerpoint. + + # Step 0: Gather transform components, relative to camera center + orbit_mat = node.transform.translated(-self.center) + position, rotation, _scale = la.mat_decompose(orbit_mat.T) + camera_right = la.vec_transform_quat((1, 0, 0), rotation) + # TODO: Make this a controller parameter + camera_polar = (0, 0, 1) + + # Step 1 + d_azimuth = self._last_pos[0] - new_pos[0] + d_elevation = float(self._last_pos[1] - new_pos[1]) + + # Step 2 + e_bound = float(la.vec_angle(position, (0, 0, 1)) * 180 / math.pi) + if e_bound + d_elevation < 0: + d_elevation = -e_bound + if e_bound + d_elevation > 180: + d_elevation = 180 - e_bound + + # Step 3 node.transform = ( - Transform() - .scaled(scale) - .rotated(90, (0, 1, 0)) - .rotated(90, (1, 0, 0)) - .translated((r, 0, 0)) - .rotated(90 - new_elevation, (0, -1, 0)) - .rotated(new_azimuth, (0, 0, 1)) - .translated(self._center) + node.transform.translated(-self.center) # 3a + .rotated(d_elevation, camera_right) # 3b + .rotated(d_azimuth, camera_polar) # 3c + .translated(self.center) # 3d ) - self._drag_pos = new_pos + # Step n+1: Update last position + self._last_pos = new_pos return handled From 5f77b31427ff6386d21054086da115027f7decb1 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 28 Aug 2025 13:00:35 -0500 Subject: [PATCH 054/120] OrbitController: Add pan/zoom --- examples/basic_volume.py | 3 +- src/scenex/events/controllers.py | 57 +++++++++++++++++++++++--------- 2 files changed, 43 insertions(+), 17 deletions(-) diff --git a/examples/basic_volume.py b/examples/basic_volume.py index 38be68d8..96719a46 100644 --- a/examples/basic_volume.py +++ b/examples/basic_volume.py @@ -40,7 +40,8 @@ Transform() .rotated(90, (0, 1, 0)) .rotated(90, (1, 0, 0)) - .translated((*orbit_center, 300, 0, 0)) + .translated(orbit_center) + .translated((300, 0, 0)) ) # Perspective projection for 3D view.camera.projection = projections.perspective( diff --git a/src/scenex/events/controllers.py b/src/scenex/events/controllers.py index ceb775a5..3f8f7183 100644 --- a/src/scenex/events/controllers.py +++ b/src/scenex/events/controllers.py @@ -5,7 +5,7 @@ import numpy as np import pylinalg as la -from scenex.events.events import Event, MouseButton, MouseEvent, WheelEvent +from scenex.events.events import Event, MouseButton, MouseEvent, Ray, WheelEvent from scenex.model import Camera, Node @@ -30,7 +30,8 @@ class OrbitController: def __init__(self, center: tuple[float, float, float] = (0.0, 0.0, 0.0)) -> None: self.center = np.array(center, dtype=float) self.polar_axis = np.array((0.0, 0.0, 1.0), dtype=float) - self._last_pos: tuple[float, float] | None = None + self._last_canvas_pos: tuple[float, float] | None = None + self._pan_ray: Ray | None = None def __call__(self, event: Event, node: Node) -> bool: """Handle mouse and wheel events to orbit the camera.""" @@ -39,19 +40,11 @@ def __call__(self, event: Event, node: Node) -> bool: handled = False if isinstance(event, MouseEvent): - # TODO: Pan with right click - # TODO: Zoom with wheel - new_pos = event.canvas_pos - - # Start orbit on left mouse press - if event.type == "press" and MouseButton.LEFT in event.buttons: - self._last_pos = new_pos - # Orbit on mouse move with left button held - elif ( + if ( event.type == "move" - and MouseButton.LEFT in event.buttons - and self._last_pos is not None + and event.buttons == MouseButton.LEFT + and self._last_canvas_pos is not None ): # The process of orbiting is as follows: # 1. Compute the azimuth and elevation changes based on mouse movement. @@ -81,8 +74,8 @@ def __call__(self, event: Event, node: Node) -> bool: camera_polar = (0, 0, 1) # Step 1 - d_azimuth = self._last_pos[0] - new_pos[0] - d_elevation = float(self._last_pos[1] - new_pos[1]) + d_azimuth = self._last_canvas_pos[0] - event.canvas_pos[0] + d_elevation = self._last_canvas_pos[1] - event.canvas_pos[1] # Step 2 e_bound = float(la.vec_angle(position, (0, 0, 1)) * 180 / math.pi) @@ -100,8 +93,40 @@ def __call__(self, event: Event, node: Node) -> bool: ) # Step n+1: Update last position - self._last_pos = new_pos + self._last_canvas_pos = self._last_canvas_pos + handled = True + + # Pan on mouse move with right button held + elif event.type == "press" and event.buttons == MouseButton.RIGHT: + self._pan_ray = event.world_ray + + # Pan on mouse move with right button held + elif ( + event.type == "move" + and event.buttons == MouseButton.RIGHT + and self._pan_ray is not None + ): + dr = np.linalg.norm(node.transform.map((0, 0, 0))[:3] - self.center) + old_center = self._pan_ray.origin[:3] + np.multiply( + dr, self._pan_ray.direction + ) + new_center = event.world_ray.origin[:3] + np.multiply( + dr, event.world_ray.direction + ) + diff = np.subtract(old_center, new_center) + node.transform = node.transform.translated(diff) + self.center += diff + handled = True + + elif isinstance(event, WheelEvent): + # Zoom while keeping the position under the cursor fixed. + _dx, dy = event.angle_delta + if dy: + dr = node.transform.map((0, 0, 0))[:3] - self.center + zoom = 2 ** (dy * 0.001) # Magnifier stolen from pygfx + node.transform = node.transform.translated(dr * (1 - zoom)) + self._last_canvas_pos = event.canvas_pos return handled From 0c485c848daf6314a118d0f8692660bd2ad998ce Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 29 Aug 2025 14:52:44 -0500 Subject: [PATCH 055/120] Test controllers --- src/scenex/events/_qt.py | 6 +- src/scenex/events/controllers.py | 21 ++- src/scenex/events/events.py | 5 +- src/scenex/model/_canvas.py | 6 + src/scenex/model/_nodes/camera.py | 4 +- tests/adaptors/_pygfx/test_camera.py | 12 +- tests/adaptors/_vispy/test_camera.py | 52 ++++--- tests/model/_nodes/test_canvas.py | 76 ++++++++++ tests/test_canvas_to_world.py | 0 tests/test_controllers.py | 201 +++++++++++++++++++++++++++ 10 files changed, 340 insertions(+), 43 deletions(-) create mode 100644 tests/model/_nodes/test_canvas.py create mode 100644 tests/test_canvas_to_world.py create mode 100644 tests/test_controllers.py diff --git a/src/scenex/events/_qt.py b/src/scenex/events/_qt.py index 4d5f432c..a4bf1966 100644 --- a/src/scenex/events/_qt.py +++ b/src/scenex/events/_qt.py @@ -8,7 +8,7 @@ from qtpy.QtWidgets import QApplication, QWidget from scenex.events._auto import App, EventFilter -from scenex.events.events import MouseButton, MouseEvent, WheelEvent, _canvas_to_world +from scenex.events.events import MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: from collections.abc import Callable @@ -53,7 +53,7 @@ def _convert_event(self, qevent: QEvent) -> Event | None: if isinstance(qevent, QMouseEvent): pos = qevent.position() canvas_pos = (pos.x(), pos.y()) - if not (ray := _canvas_to_world(self._model_canvas, canvas_pos)): + if not (ray := self._model_canvas.to_world(canvas_pos)): return None etype = qevent.type() @@ -93,7 +93,7 @@ def _convert_event(self, qevent: QEvent) -> Event | None: # TODO: Figure out the buttons pos = qevent.position() canvas_pos = (pos.x(), pos.y()) - if not (ray := _canvas_to_world(self._model_canvas, canvas_pos)): + if not (ray := self._model_canvas.to_world(canvas_pos)): return None return WheelEvent( type="wheel", diff --git a/src/scenex/events/controllers.py b/src/scenex/events/controllers.py index 3f8f7183..456221a2 100644 --- a/src/scenex/events/controllers.py +++ b/src/scenex/events/controllers.py @@ -69,9 +69,9 @@ def __call__(self, event: Event, node: Node) -> bool: # Step 0: Gather transform components, relative to camera center orbit_mat = node.transform.translated(-self.center) position, rotation, _scale = la.mat_decompose(orbit_mat.T) - camera_right = la.vec_transform_quat((1, 0, 0), rotation) # TODO: Make this a controller parameter camera_polar = (0, 0, 1) + camera_right = np.cross(camera_polar, position) # Step 1 d_azimuth = self._last_canvas_pos[0] - event.canvas_pos[0] @@ -119,16 +119,20 @@ def __call__(self, event: Event, node: Node) -> bool: handled = True elif isinstance(event, WheelEvent): - # Zoom while keeping the position under the cursor fixed. _dx, dy = event.angle_delta if dy: dr = node.transform.map((0, 0, 0))[:3] - self.center - zoom = 2 ** (dy * 0.001) # Magnifier stolen from pygfx - node.transform = node.transform.translated(dr * (1 - zoom)) + zoom = self._zoom_factor(dy) + node.transform = node.transform.translated(dr * (zoom - 1)) + handled = True self._last_canvas_pos = event.canvas_pos return handled + def _zoom_factor(self, delta: float) -> float: + # Magnifier stolen from pygfx + return 2 ** (-delta * 0.001) + class PanZoomController: """ @@ -148,7 +152,6 @@ def __call__(self, event: Event, node: Node) -> bool: assert isinstance(node, Camera) handled = False - # FIXME: Probably doesn't work outside of panzoom camera if isinstance(event, MouseEvent): new_pos = event.world_ray.origin[:2] @@ -169,12 +172,14 @@ def __call__(self, event: Event, node: Node) -> bool: node.transform = node.transform.translated((dx, dy)) handled = True + # Note that while panning adjusts the camera's transform matrix, zooming + # adjusts the projection matrix. elif isinstance(event, WheelEvent): # Zoom while keeping the position under the cursor fixed. _dx, dy = event.angle_delta if dy: # Step 1: Adjust the projection matrix to zoom in or out. - zoom = 2 ** (dy * 0.001) # Magnifier stolen from pygfx + zoom = self._zoom_factor(dy) node.projection = node.projection.scaled((zoom, zoom, 1.0)) # Step 2: Adjust the transform matrix to maintain the position @@ -194,3 +199,7 @@ def __call__(self, event: Event, node: Node) -> bool: handled = True return handled + + def _zoom_factor(self, delta: float) -> float: + # Magnifier stolen from pygfx + return 2 ** (delta * 0.001) diff --git a/src/scenex/events/events.py b/src/scenex/events/events.py index 4a491648..94314a02 100644 --- a/src/scenex/events/events.py +++ b/src/scenex/events/events.py @@ -131,13 +131,12 @@ def _canvas_to_world(canvas: Canvas, canvas_pos: tuple[float, float]) -> Ray | N # * The view matrix, i.e. the transform positioning the camera in the world. # The result is a matrix mapping world coordinates camera_matrix = view.camera.projection @ view.camera.transform.inv().T - pos_diff = la.vec_transform(view.camera.transform.root[3, :3], camera_matrix.T) # Unproject the canvas NDC coordinates into world space. - pos_world = la.vec_unproject(pos_ndc + pos_diff[:2], camera_matrix) + pos_world = la.vec_unproject(pos_ndc, camera_matrix) # To find the direction of the ray, we find a unprojected point farther away # and subtract the closer point. - pos_world_farther = la.vec_unproject(pos_ndc + pos_diff[:2], camera_matrix, depth=1) + pos_world_farther = la.vec_unproject(pos_ndc, camera_matrix, depth=1) direction = pos_world_farther - pos_world direction = direction / np.linalg.norm(direction) diff --git a/src/scenex/model/_canvas.py b/src/scenex/model/_canvas.py index 87889459..5ca044c0 100644 --- a/src/scenex/model/_canvas.py +++ b/src/scenex/model/_canvas.py @@ -5,6 +5,8 @@ from cmap import Color from pydantic import ConfigDict, Field +from scenex.events.events import Ray, _canvas_to_world + from ._base import EventedBase from ._evented_list import EventedList from ._view import View # noqa: TC001 @@ -54,3 +56,7 @@ def render(self) -> np.ndarray: if adaptors := self._get_adaptors(): return cast("CanvasAdaptor", adaptors[0])._snx_render() raise RuntimeError("No adaptor found for Canvas.") + + def to_world(self, canvas_pos: tuple[float, float]) -> Ray | None: + """Convert canvas coordinates to world coordinates.""" + return _canvas_to_world(self, canvas_pos) diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index a16bbecc..d3855eb1 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -49,9 +49,9 @@ def __init__( "such as mouse and keyboard events.", ) projection: Transform = Field( - default_factory=lambda: projections.orthographic(1, 1, 1), + default_factory=lambda: projections.orthographic(2, 2, 2), description="Describes how 3D points are mapped to a 2D canvas, " - "default is an orthographic projection of a unit cube, centered at (0, 0, 0)", + "default is an orthographic projection of a 2x2x2 cube, centered at (0, 0, 0)", ) @computed_field # type: ignore[prop-decorator] diff --git a/tests/adaptors/_pygfx/test_camera.py b/tests/adaptors/_pygfx/test_camera.py index e3eedb79..bfd5b3f6 100644 --- a/tests/adaptors/_pygfx/test_camera.py +++ b/tests/adaptors/_pygfx/test_camera.py @@ -31,14 +31,14 @@ def test_transform_defaults(camera: tuple[snx.Camera, adaptors.Camera]) -> None: node = adaptor._pygfx_node assert isinstance(node, pygfx.Camera) - # Centered at [0, 0], top left [-0.5, -0.5], bottom right [0.5, 0.5] + # Centered at [0, 0], top left [-1, -1], bottom right [1, 1] assert model.transform == Transform() - assert model.projection == projections.orthographic(1, 1, 1) + assert model.projection == projections.orthographic(2, 2, 2) # Assert internal pygfx matrices match the model matrices # Note that pygfx matrices are transposes of scenex matrices assert np.array_equal(node.local.matrix.T, Transform()) - assert np.array_equal(node.projection_matrix.T, projections.orthographic(1, 1, 1)) # pyright: ignore[reportAttributeAccessIssue] + assert np.array_equal(node.projection_matrix.T, projections.orthographic(2, 2, 2)) # pyright: ignore[reportAttributeAccessIssue] def test_transform_translate(camera: tuple[snx.Camera, adaptors.Camera]) -> None: @@ -53,7 +53,7 @@ def test_transform_translate(camera: tuple[snx.Camera, adaptors.Camera]) -> None # Assert internal pygfx matrices match the expected model matrices # Note that pygfx matrices are transposes of scenex matrices assert np.array_equal(node.local.matrix.T, Transform().translated((0.5, 0.5))) - assert np.array_equal(node.projection_matrix.T, projections.orthographic(1, 1, 1)) # pyright: ignore[reportAttributeAccessIssue] + assert np.array_equal(node.projection_matrix.T, projections.orthographic(2, 2, 2)) # pyright: ignore[reportAttributeAccessIssue] def test_transform_scale(camera: tuple[snx.Camera, adaptors.Camera]) -> None: @@ -63,9 +63,9 @@ def test_transform_scale(camera: tuple[snx.Camera, adaptors.Camera]) -> None: assert isinstance(node, pygfx.Camera) # Widen the projection matrix - model.projection = projections.orthographic(2, 2, 2) + model.projection = projections.orthographic(4, 4, 4) # Assert internal pygfx matrices match the expected model matrices # Note that pygfx matrices are transposes of scenex matrices assert np.array_equal(node.local.matrix.T, Transform()) - assert np.array_equal(node.projection_matrix.T, projections.orthographic(2, 2, 2)) # pyright: ignore[reportAttributeAccessIssue] + assert np.array_equal(node.projection_matrix.T, projections.orthographic(4, 4, 4)) # pyright: ignore[reportAttributeAccessIssue] diff --git a/tests/adaptors/_vispy/test_camera.py b/tests/adaptors/_vispy/test_camera.py index 1b3962e8..321b0b16 100644 --- a/tests/adaptors/_vispy/test_camera.py +++ b/tests/adaptors/_vispy/test_camera.py @@ -28,20 +28,22 @@ def camera() -> Generator[tuple[snx.Camera, adaptors.Camera], None, None]: def test_transform_defaults(camera: tuple[snx.Camera, adaptors.Camera]) -> None: model, adaptor = camera + # Centered at [0, 0], top left [-1, -1], bottom right [1, 1] + assert model.transform == Transform() + assert model.projection == projections.orthographic(2, 2, 2) node = adaptor._vispy_node assert isinstance(node, BaseCamera) - # Centered at [0, 0], top left [-0.5, -0.5], bottom right [0.5, 0.5] - assert model.transform == Transform() - assert model.projection == projections.orthographic(1, 1, 1) - # Vispy wants to map [-0.5, -0.5] to [0, 0] - # Vispy wants to map [0.5, 0.5] to [10, 10] + + w, h = node.viewbox.size + # Vispy wants to map [-1, 1] to [0, 0] + # Vispy wants to map [1, -1] to [w, h] exp_tform_mat = np.asarray( [ - [10, 0, 0, 0], - [0, 10, 0, 0], - [0, 0, -2, 0], - [5, 5, 0, 1], + [w / 2, 0, 0, 0], + [0, -h / 2, 0, 0], + [0, 0, -1, 0], + [w / 2, h / 2, 0, 1], ] ) assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] @@ -54,15 +56,17 @@ def test_transform_translate(camera: tuple[snx.Camera, adaptors.Camera]) -> None assert isinstance(node, BaseCamera) # Move the camera - model.transform = Transform().translated((0.5, 0.5)) - # Vispy wants to map [0, 0] to [0, 0] - # Vispy wants to map [1, 1] to [10, 10] + model.transform = Transform().translated((1, 1)) + + w, h = node.viewbox.size + # Vispy wants to map [0, 2] to [0, 0] + # Vispy wants to map [2, 0] to [w, h] exp_tform_mat = np.asarray( [ - [10, 0, 0, 0], - [0, 10, 0, 0], - [0, 0, -2, 0], - [0, 0, 0, 1], + [w / 2, 0, 0, 0], + [0, -h / 2, 0, 0], + [0, 0, -1, 0], + [0, h, 0, 1], ] ) assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] @@ -75,15 +79,17 @@ def test_transform_scale(camera: tuple[snx.Camera, adaptors.Camera]) -> None: assert isinstance(node, BaseCamera) # Widen the projection matrix - model.projection = projections.orthographic(2, 2, 2) - # Vispy wants to map [-1, -1] to [0, 0] - # Vispy wants to map [1, 1] to [10, 10] + model.projection = projections.orthographic(4, 4, 4) + + w, h = node.viewbox.size + # Vispy wants to map [-2, 2] to [0, 0] + # Vispy wants to map [2, -2] to [10, 10] exp_tform_mat = np.asarray( [ - [5, 0, 0, 0], - [0, 5, 0, 0], - [0, 0, -1, 0], - [5, 5, 0, 1], + [w / 4, 0, 0, 0], + [0, -h / 4, 0, 0], + [0, 0, -1 / 2, 0], + [w / 2, h / 2, 0, 1], ] ) assert np.array_equal(node.transform.matrix, exp_tform_mat) # pyright: ignore[reportAttributeAccessIssue] diff --git a/tests/model/_nodes/test_canvas.py b/tests/model/_nodes/test_canvas.py new file mode 100644 index 00000000..333d3960 --- /dev/null +++ b/tests/model/_nodes/test_canvas.py @@ -0,0 +1,76 @@ +import numpy as np + +import scenex as snx +from scenex.events.events import Ray +from scenex.utils import projections + + +def test_to_world(): + """Tests Canvas.to_world""" + # Identity projection, identity transformation + camera = snx.Camera( + transform=snx.Transform(), + projection=projections.orthographic(2, 2, 2), + interactive=True, + ) + view = snx.View(scene=snx.Scene(children=[]), camera=camera) + canvas = snx.Canvas(width=int(view.layout.width), height=int(view.layout.height)) + canvas.views.append(view) + + # Test center of canvas + canvas_pos = (view.layout.width // 2, view.layout.height // 2) + ray = canvas.to_world(canvas_pos) + assert ray == Ray(origin=(0, 0, 0), direction=(0, 0, -1)) + + # Test top-left corner + canvas_pos = (0, 0) + ray = canvas.to_world(canvas_pos) + assert ray == Ray(origin=(-1, 1, 0), direction=(0, 0, -1)) + + # Test outside the view + canvas_pos = (view.layout.width * 2, view.layout.height * 2) + ray = canvas.to_world(canvas_pos) + assert ray is None + + +def test_to_world_translated(): + """Tests Canvas.to_world with a translated camera""" + # Identity projection, small transformation + camera = snx.Camera( + transform=snx.Transform().translated((1, 1, 1)), + projection=projections.orthographic(2, 2, 2), + interactive=True, + ) + view = snx.View(scene=snx.Scene(children=[]), camera=camera) + canvas = snx.Canvas(width=int(view.layout.width), height=int(view.layout.height)) + canvas.views.append(view) + + ray = canvas.to_world((0, 0)) + assert ray == Ray(origin=(0, 2, 1), direction=(0, 0, -1)) + # Rotate counter-clockwise around +Z - we see a clockwise rotation + # i.e. (-1, 1, 0) moves to the top right corner and (-1, -1, 0) moves to the + # top left corner + camera.transform = snx.Transform().rotated(90, (0, 0, 1)) + ray = canvas.to_world((0, 0)) + # Rounding errors :( + assert ray is not None + assert np.allclose(ray.origin, (-1, -1, 0), atol=1e-7) + assert np.array_equal(ray.direction, (0, 0, -1)) + camera.transform = snx.Transform() + + +def test_to_world_projection(): + """Tests Canvas.to_world with a non-identity camera projection""" + # Narrowed projection, identity transformation + camera = snx.Camera( + transform=snx.Transform(), + projection=projections.orthographic(1, 1, 1), + interactive=True, + ) + view = snx.View(scene=snx.Scene(children=[]), camera=camera) + canvas = snx.Canvas(width=int(view.layout.width), height=int(view.layout.height)) + canvas.views.append(view) + + ray = canvas.to_world((0, 0)) + assert ray == Ray(origin=(-0.5, 0.5, 0), direction=(0, 0, -1)) + camera.projection = snx.Transform() diff --git a/tests/test_canvas_to_world.py b/tests/test_canvas_to_world.py new file mode 100644 index 00000000..e69de29b diff --git a/tests/test_controllers.py b/tests/test_controllers.py new file mode 100644 index 00000000..984e06ec --- /dev/null +++ b/tests/test_controllers.py @@ -0,0 +1,201 @@ +from __future__ import annotations + +import math + +import numpy as np +import pylinalg as la + +import scenex as snx +from scenex.events.controllers import OrbitController, PanZoomController +from scenex.events.events import MouseButton, MouseEvent, Ray, WheelEvent +from scenex.model._transform import Transform + + +def test_panzoomcontroller_pan(): + """Tests panning behavior of the PanZoomController.""" + controller = PanZoomController() + cam = snx.Camera(interactive=True, controller=controller) + # Simulate mouse press + press_event = MouseEvent( + type="press", + canvas_pos=(0, 0), + world_ray=Ray((10, 10, 0), (0, 0, -1)), + buttons=MouseButton.LEFT, + ) + controller(press_event, cam) + # Simulate mouse move + move_event = MouseEvent( + type="move", + canvas_pos=(0, 0), + world_ray=Ray((15, 20, 0), (0, 0, -1)), + buttons=MouseButton.LEFT, + ) + controller(move_event, cam) + # The camera should have moved by (-5, -10) + expected = Transform().translated((-5, -10)) + np.testing.assert_allclose(cam.transform.root, expected.root) + + +def test_panzoomcontroller_zoom(): + """Tests zooming behavior of the PanZoomController.""" + controller = PanZoomController() + cam = snx.Camera(interactive=True) + cam.set_event_filter(controller) + # Simulate wheel event + wheel_event = WheelEvent( + type="wheel", + canvas_pos=(0, 0), + world_ray=Ray((0, 0, 0), (0, 0, -1)), + buttons=MouseButton.NONE, + angle_delta=(0, 120), + ) + before = cam.projection + controller(wheel_event, cam) + # The projection should be scaled + zoom = controller._zoom_factor(wheel_event.angle_delta[1]) + expected = before.scaled((zoom, zoom, 1)) + np.testing.assert_allclose(cam.projection.root, expected.root) + + +def test_orbitcontroller_orbit(): + """Tests orbiting behavior of the OrbitController.""" + # Camera is along the x axis, looking in the negative x direction at the center + controller = OrbitController(center=(0, 0, 0)) + cam = snx.Camera(interactive=True, controller=controller) + # Add cam to the canvas + canvas = snx.Canvas() + view = snx.View(camera=cam) + canvas.views.append(view) + # Position the camera along the x-axis, looking in the negative x direction at the + # center + cam.transform = Transform().rotated(90, (0, 1, 0)).translated((10, 0, 0)) + ray = canvas.to_world((view.layout.width / 2, view.layout.height / 2)) + assert ray is not None + np.testing.assert_allclose(ray.origin, (10, 0, 0), atol=1e-7) + np.testing.assert_allclose(ray.direction, (-1, 0, 0), atol=1e-7) + + pos_before = cam.transform.map((0, 0, 0))[:3] + # Simulate mouse press + click_pos = (view.layout.width / 2, view.layout.height / 2) + press_event = MouseEvent( + type="press", + canvas_pos=click_pos, + world_ray=canvas.to_world(click_pos), + buttons=MouseButton.LEFT, + ) + controller(press_event, cam) + # Simulate mouse move (orbit) of one horizontal pixel + move_pos = (click_pos[0] + 1, click_pos[1]) + move_event = MouseEvent( + type="move", + canvas_pos=move_pos, + world_ray=canvas.to_world(move_pos), + buttons=MouseButton.LEFT, + ) + controller(move_event, cam) + move_pos = (click_pos[0] + 1, click_pos[1] + 1) + move_event = MouseEvent( + type="move", + canvas_pos=move_pos, + world_ray=canvas.to_world(move_pos), + buttons=MouseButton.LEFT, + ) + controller(move_event, cam) + # Assert camera position conforms to expectation (rotated 1 degree around z axis) + pos_after_exp = la.vec_transform_quat( + pos_before, + la.quat_mul( + # Increase azimuth 1 degree + la.quat_from_axis_angle((0, 0, -1), math.pi / 180), + # Increase elevation 1 degree + la.quat_from_axis_angle((0, -1, 0), math.pi / 180), + ), + ) + pos_after_act = cam.transform.map((0, 0, 0))[:3] + np.testing.assert_allclose(pos_after_exp, pos_after_act) + + +def test_orbitcontroller_zoom(): + center = (0.0, 0.0, 0.0) + cam = snx.Camera(interactive=True, transform=Transform().translated((0, 0, 10))) + controller = OrbitController(center) + cam.set_event_filter(controller) + tform_before = cam.transform + # Simulate wheel event + wheel_event = WheelEvent( + type="wheel", + canvas_pos=(0, 0), + world_ray=Ray((0, 0, 10), (0, 0, -1)), + buttons=MouseButton.NONE, + angle_delta=(0, 120), + ) + controller(wheel_event, cam) + # The camera should have moved closer to center + zoom = controller._zoom_factor(120) + desired_tform = Transform().translated((0, 0, 10 * zoom)) + np.testing.assert_allclose(cam.transform, desired_tform) + + # Simulate wheel event in other direction + wheel_event = WheelEvent( + type="wheel", + canvas_pos=(0, 0), + world_ray=Ray((0, 0, 10), (0, 0, -1)), + buttons=MouseButton.NONE, + angle_delta=(0, -120), + ) + controller(wheel_event, cam) + # The camera should have moved back to the starting point + zoom = controller._zoom_factor(-120) + desired_tform = Transform().translated((0, 0, 10)) + np.testing.assert_allclose(cam.transform, tform_before) + + +def test_orbitcontroller_pan(): + # Camera is along the x axis, looking in the negative x direction at the center + controller = OrbitController(center=(0, 0, 0)) + cam = snx.Camera(interactive=True, controller=controller) + # Add cam to the canvas + canvas = snx.Canvas() + view = snx.View(camera=cam) + canvas.views.append(view) + # Position the camera along the x-axis, looking in the negative x direction at the + # center + cam.transform = Transform().rotated(90, (0, 1, 0)).translated((10, 0, 0)) + ray = canvas.to_world((view.layout.width / 2, view.layout.height / 2)) + assert ray is not None + np.testing.assert_allclose(ray.origin, (10, 0, 0), atol=1e-7) + np.testing.assert_allclose(ray.direction, (-1, 0, 0), atol=1e-7) + tform_before = cam.transform + center_before = controller.center.copy() + + # Simulate right mouse press + click_pos = (view.layout.width / 2, view.layout.height / 2) + world_ray_before = canvas.to_world(click_pos) + press_event = MouseEvent( + type="press", + canvas_pos=click_pos, + world_ray=world_ray_before, + buttons=MouseButton.RIGHT, + ) + controller(press_event, cam) + # Simulate right mouse move (pan) + click_pos = (click_pos[0], click_pos[1] + view.layout.height // 2) + world_ray_after = canvas.to_world(click_pos) + move_event = MouseEvent( + type="move", + canvas_pos=click_pos, + world_ray=world_ray_after, + buttons=MouseButton.RIGHT, + ) + controller(move_event, cam) + # This should move the camera (world_ray_before - world_ray_after), so that the + # center stays at the same point on the camera plane. + distance = [ + b - a + for b, a in zip(world_ray_before.origin, world_ray_after.origin, strict=True) + ] + desired_tform = tform_before.translated(distance) + np.testing.assert_allclose(cam.transform, desired_tform) + # It should move the orbit center in a similar way + desired_center = np.asarray(center_before) + distance + np.testing.assert_allclose(controller.center, desired_center) From 99b8967755c2419e56b72253676659454c6cccef Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 29 Aug 2025 15:57:37 -0500 Subject: [PATCH 056/120] Move _canvas_to_world to the canvas --- src/scenex/adaptors/_base.py | 2 + src/scenex/adaptors/_pygfx/_canvas.py | 3 +- src/scenex/events/_glfw.py | 8 ++-- src/scenex/events/_jupyter.py | 38 ++++++++--------- src/scenex/events/_wx.py | 10 ++--- src/scenex/events/events.py | 59 +-------------------------- src/scenex/model/_canvas.py | 54 +++++++++++++++++++++--- 7 files changed, 80 insertions(+), 94 deletions(-) diff --git a/src/scenex/adaptors/_base.py b/src/scenex/adaptors/_base.py index 8871312d..3b7b678c 100644 --- a/src/scenex/adaptors/_base.py +++ b/src/scenex/adaptors/_base.py @@ -182,6 +182,8 @@ def _snx_set_title(self, arg: str, /) -> None: ... @abstractmethod def _snx_close(self) -> None: ... @abstractmethod + def _snx_render(self) -> NDArray: ... + @abstractmethod def _snx_add_view(self, arg: model.View, /) -> None: ... def _snx_get_ipython_mimebundle( diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index 6ec1fbec..06d42b5b 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -30,8 +30,7 @@ def rendercanvas_class() -> type[BaseRenderCanvas]: frontend = determine_app() if frontend == GuiFrontend.QT: from qtpy.QtCore import QSize # pyright: ignore[reportMissingImports] - from rendercanvas.auto import loop - from rendercanvas.qt import QRenderWidget + from rendercanvas.qt import QRenderWidget, loop class _QRenderWidget(QRenderWidget): def sizeHint(self) -> QSize: diff --git a/src/scenex/events/_glfw.py b/src/scenex/events/_glfw.py index 75dac821..e187216e 100644 --- a/src/scenex/events/_glfw.py +++ b/src/scenex/events/_glfw.py @@ -5,7 +5,7 @@ import glfw from scenex.events._auto import App, EventFilter -from scenex.events.events import MouseButton, MouseEvent, WheelEvent, _canvas_to_world +from scenex.events.events import MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: from collections.abc import Callable @@ -56,7 +56,7 @@ def uninstall(self) -> None: def _cursor_pos_callback(self, window: Any, xpos: float, ypos: float) -> None: """Handle cursor position events.""" canvas_pos = (xpos, ypos) - if ray := _canvas_to_world(self._canvas, canvas_pos): + if ray := self._canvas.to_world(canvas_pos): self._filter_func( MouseEvent( type="move", @@ -79,7 +79,7 @@ def _mouse_button_callback( self, window: Any, button: int, action: int, mods: int ) -> None: pos = glfw.get_cursor_pos(window) - if not (ray := _canvas_to_world(self._canvas, pos)): + if not (ray := self._canvas.to_world(pos)): return # Mouse click event @@ -109,7 +109,7 @@ def _mouse_scroll_callback( self, window: Any, xoffset: float, yoffset: float ) -> None: pos = glfw.get_cursor_pos(window) - if not (ray := _canvas_to_world(self._canvas, pos)): + if not (ray := self._canvas.to_world(pos)): return # Mouse wheel event diff --git a/src/scenex/events/_jupyter.py b/src/scenex/events/_jupyter.py index bcb3ec5b..82cac3ca 100644 --- a/src/scenex/events/_jupyter.py +++ b/src/scenex/events/_jupyter.py @@ -7,7 +7,7 @@ from jupyter_rfb import RemoteFrameBuffer from scenex.events._auto import App, EventFilter -from scenex.events.events import MouseButton, MouseEvent, WheelEvent, _canvas_to_world +from scenex.events.events import MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: from collections.abc import Callable @@ -40,7 +40,7 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: etype = ev["event_type"] if etype == "pointer_move": canvas_pos = (ev["x"], ev["y"]) - if world_ray := _canvas_to_world(filter._model_canvas, canvas_pos): + if world_ray := filter._model_canvas.to_world(canvas_pos): filter._filter_func( MouseEvent( type="move", @@ -52,7 +52,7 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: elif etype == "pointer_down": canvas_pos = (ev["x"], ev["y"]) filter._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) - if world_ray := _canvas_to_world(filter._model_canvas, canvas_pos): + if world_ray := filter._model_canvas.to_world(canvas_pos): filter._filter_func( MouseEvent( type="press", @@ -64,7 +64,7 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: elif etype == "double_click": btn = JupyterEventFilter.mouse_btn(ev["button"]) canvas_pos = (ev["x"], ev["y"]) - if world_ray := _canvas_to_world(filter._model_canvas, canvas_pos): + if world_ray := filter._model_canvas.to_world(canvas_pos): # Note that in Jupyter, a double_click event is not a pointer # event and as such, we need to handle both press and release. # See @@ -89,7 +89,7 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: elif etype == "pointer_up": canvas_pos = (ev["x"], ev["y"]) filter._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) - if world_ray := _canvas_to_world(filter._model_canvas, canvas_pos): + if world_ray := filter._model_canvas.to_world(canvas_pos): filter._filter_func( MouseEvent( type="release", @@ -98,9 +98,18 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: buttons=filter._active_button, ) ) - # elif etype == "wheel": - # if not intercepted: - # self._old_event(ev) + elif etype == "wheel": + canvas_pos = (ev["x"], ev["y"]) + if world_ray := filter._model_canvas.to_world(canvas_pos): + filter._filter_func( + WheelEvent( + type="wheel", + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=filter._active_button, + angle_delta=(ev["delta_x"], ev["delta_y"]), + ) + ) return _handle_event @@ -122,19 +131,6 @@ def mouse_btn(cls, btn: Any) -> MouseButton: def uninstall(self) -> None: self._canvas.handle_event = self._old_event - def _on_wheel(self, event: dict) -> None: - pos = (event["x"], event["y"]) - if ray := _canvas_to_world(self._model_canvas, pos): - self._filter_func( - WheelEvent( - type="wheel", - canvas_pos=pos, - world_ray=ray, - buttons=self._active_button, - angle_delta=(event["delta_x"], event["delta_y"]), - ) - ) - class JupyterAppWrap(App): """Provider for Jupyter notebook.""" diff --git a/src/scenex/events/_wx.py b/src/scenex/events/_wx.py index 13f4be37..25a147ca 100644 --- a/src/scenex/events/_wx.py +++ b/src/scenex/events/_wx.py @@ -5,7 +5,7 @@ import wx from scenex.events._auto import App, EventFilter -from scenex.events.events import MouseButton, MouseEvent, WheelEvent, _canvas_to_world +from scenex.events.events import MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: from collections.abc import Callable @@ -55,7 +55,7 @@ def _on_mouse_down(self, event: wx.MouseEvent) -> None: btn = self._map_button(event) self._active_button |= btn pos = event.GetPosition() - if ray := _canvas_to_world(self._model_canvas, (pos.x, pos.y)): + if ray := self._model_canvas.to_world((pos.x, pos.y)): self._filter_func( MouseEvent( type="press", @@ -70,7 +70,7 @@ def _on_mouse_up(self, event: wx.MouseEvent) -> None: btn = self._map_button(event) self._active_button &= ~btn pos = event.GetPosition() - if ray := _canvas_to_world(self._model_canvas, (pos.x, pos.y)): + if ray := self._model_canvas.to_world((pos.x, pos.y)): self._filter_func( MouseEvent( type="release", @@ -84,7 +84,7 @@ def _on_mouse_up(self, event: wx.MouseEvent) -> None: def _on_mouse_move(self, event: wx.MouseEvent) -> None: pos = event.GetPosition() print(pos) - if ray := _canvas_to_world(self._model_canvas, (pos.x, pos.y)): + if ray := self._model_canvas.to_world((pos.x, pos.y)): self._filter_func( MouseEvent( type="move", @@ -97,7 +97,7 @@ def _on_mouse_move(self, event: wx.MouseEvent) -> None: def _on_wheel(self, event: wx.MouseEvent) -> None: pos = event.GetPosition() - if ray := _canvas_to_world(self._model_canvas, (pos.x, pos.y)): + if ray := self._model_canvas.to_world((pos.x, pos.y)): self._filter_func( WheelEvent( type="wheel", diff --git a/src/scenex/events/events.py b/src/scenex/events/events.py index 94314a02..21416173 100644 --- a/src/scenex/events/events.py +++ b/src/scenex/events/events.py @@ -4,15 +4,10 @@ from enum import IntFlag, auto from typing import TYPE_CHECKING, NamedTuple -import numpy as np -import pylinalg as la - -# from scenex.model import Camera - if TYPE_CHECKING: from typing import Any - from scenex.model import Canvas, Node, View + from scenex.model import Canvas, Node @dataclass @@ -61,7 +56,7 @@ class WheelEvent(MouseEvent): def _handle_event(canvas: Canvas, event: Event) -> bool: handled = False if isinstance(event, MouseEvent): - if view := _containing_view(event.canvas_pos, canvas): + if view := canvas._containing_view(event.canvas_pos): through: list[tuple[Node, float]] = [] for child in view.scene.children: if (d := child.passes_through(event.world_ray)) is not None: @@ -80,13 +75,6 @@ def _handle_event(canvas: Canvas, event: Event) -> bool: return handled -def _containing_view(pos: tuple[float, float], canvas: Canvas) -> View | None: - for view in canvas.views: - if pos in view.layout: - return view - return None - - def _filter_through(event: Any, node: Node, target: Node) -> bool: """Filter the event through the scene graph to the target node.""" # TODO: Suppose a scene is not interactive. If the node is interactive, should it @@ -102,46 +90,3 @@ def _filter_through(event: Any, node: Node, target: Node) -> bool: return False # Recursively filter the event through node's parent. return _filter_through(event, parent, target) - - -def _canvas_to_world(canvas: Canvas, canvas_pos: tuple[float, float]) -> Ray | None: - """Map XY canvas position (pixels) to XYZ coordinate in world space.""" - # Code adapted from: - # https://github.com/pygfx/pygfx/pull/753/files#diff-173d643434d575e67f8c0a5bf2d7ea9791e6e03a4e7a64aa5fa2cf4172af05cdR395 - view = _containing_view(canvas_pos, canvas) - if view is None: - return None - - # Get position relative to viewport - pos_rel = ( - canvas_pos[0] - view.layout.x, - canvas_pos[1] - view.layout.y, - ) - - width, height = view.layout.size - - # Convert position to Normalized Device Coordinates (NDC) - i.e., within [-1, 1] - x = pos_rel[0] / width * 2 - 1 - y = -(pos_rel[1] / height * 2 - 1) - pos_ndc = (x, y) - - # Note that the camera matrix is the matrix multiplication of: - # * The projection matrix, which projects local space (the rectangular - # bounds of the perspective camera) into NDC. - # * The view matrix, i.e. the transform positioning the camera in the world. - # The result is a matrix mapping world coordinates - camera_matrix = view.camera.projection @ view.camera.transform.inv().T - # Unproject the canvas NDC coordinates into world space. - pos_world = la.vec_unproject(pos_ndc, camera_matrix) - - # To find the direction of the ray, we find a unprojected point farther away - # and subtract the closer point. - pos_world_farther = la.vec_unproject(pos_ndc, camera_matrix, depth=1) - direction = pos_world_farther - pos_world - direction = direction / np.linalg.norm(direction) - - ray = Ray( - origin=tuple(pos_world), - direction=tuple(direction), - ) - return ray diff --git a/src/scenex/model/_canvas.py b/src/scenex/model/_canvas.py index 5ca044c0..816410c1 100644 --- a/src/scenex/model/_canvas.py +++ b/src/scenex/model/_canvas.py @@ -2,18 +2,18 @@ from typing import TYPE_CHECKING, Any, cast +import numpy as np +import pylinalg as la from cmap import Color from pydantic import ConfigDict, Field -from scenex.events.events import Ray, _canvas_to_world +from scenex.events.events import Ray from ._base import EventedBase from ._evented_list import EventedList from ._view import View # noqa: TC001 if TYPE_CHECKING: - import numpy as np - from scenex.adaptors._base import CanvasAdaptor @@ -58,5 +58,49 @@ def render(self) -> np.ndarray: raise RuntimeError("No adaptor found for Canvas.") def to_world(self, canvas_pos: tuple[float, float]) -> Ray | None: - """Convert canvas coordinates to world coordinates.""" - return _canvas_to_world(self, canvas_pos) + """Map XY canvas position (pixels) to XYZ coordinate in world space.""" + # Code adapted from: + # https://github.com/pygfx/pygfx/pull/753/files#diff-173d643434d575e67f8c0a5bf2d7ea9791e6e03a4e7a64aa5fa2cf4172af05cdR395 + view = self._containing_view(canvas_pos) + if view is None: + return None + + # Get position relative to viewport + pos_rel = ( + canvas_pos[0] - view.layout.x, + canvas_pos[1] - view.layout.y, + ) + + width, height = view.layout.size + + # Convert position to Normalized Device Coordinates (NDC) - i.e., within [-1, 1] + x = pos_rel[0] / width * 2 - 1 + y = -(pos_rel[1] / height * 2 - 1) + pos_ndc = (x, y) + + # Note that the camera matrix is the matrix multiplication of: + # * The projection matrix, which projects local space (the rectangular + # bounds of the perspective camera) into NDC. + # * The view matrix, i.e. the transform positioning the camera in the world. + # The result is a matrix mapping world coordinates + camera_matrix = view.camera.projection @ view.camera.transform.inv().T + # Unproject the canvas NDC coordinates into world space. + pos_world = la.vec_unproject(pos_ndc, camera_matrix) + + # To find the direction of the ray, we find a unprojected point farther away + # and subtract the closer point. + pos_world_farther = la.vec_unproject(pos_ndc, camera_matrix, depth=1) + direction = pos_world_farther - pos_world + direction = direction / np.linalg.norm(direction) + + ray = Ray( + origin=tuple(pos_world), + direction=tuple(direction), + ) + return ray + + def _containing_view(self, pos: tuple[float, float]) -> View | None: + for view in self.views: + if pos in view.layout: + return view + return None From d49d07c7bf1a6692b4fa39287a01826a71c23de6 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 29 Aug 2025 17:22:17 -0500 Subject: [PATCH 057/120] Add Camera.look_at(), Camera.up, Camera.forward --- examples/basic_volume.py | 11 ++-- src/scenex/model/_nodes/camera.py | 83 +++++++++++++++++++++++++++++-- tests/model/_nodes/test_camera.py | 41 +++++++++++++++ 3 files changed, 124 insertions(+), 11 deletions(-) create mode 100644 tests/model/_nodes/test_camera.py diff --git a/examples/basic_volume.py b/examples/basic_volume.py index 96719a46..36bc3ddf 100644 --- a/examples/basic_volume.py +++ b/examples/basic_volume.py @@ -29,20 +29,15 @@ ) snx.use("vispy") -snx.show(view) +canvas = snx.show(view) # Orbit around the center of the volume orbit_center = np.mean(np.asarray(view.scene.bounding_box), axis=0) # Place the camera along the x axis, looking at the orbit center # TODO: Need a look at method -view.camera.transform = ( - Transform() - .rotated(90, (0, 1, 0)) - .rotated(90, (1, 0, 0)) - .translated(orbit_center) - .translated((300, 0, 0)) -) +view.camera.transform = Transform().translated(orbit_center).translated((300, 0, 0)) +view.camera.look_at(orbit_center, up=(0, 0, 1)) # Perspective projection for 3D view.camera.projection = projections.perspective( fov=70, diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index d3855eb1..91944d72 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -1,7 +1,10 @@ from __future__ import annotations +import math from typing import TYPE_CHECKING, Any, Literal +import numpy as np +import pylinalg as la from pydantic import Field, PrivateAttr, computed_field from scenex.model._transform import Transform @@ -18,6 +21,7 @@ CameraType = Literal["panzoom", "perspective"] Position2D = tuple[float, float] Position3D = tuple[float, float, float] +Vector3D = tuple[float, float, float] Position = Position2D | Position3D @@ -28,11 +32,15 @@ class Camera(Node): transformation for the scene, mapping it onto a 2D surface. Cameras have two different Transforms. Like all Nodes, it has a transform - `transform`, describing its location in the world. Its other transform, - `projection`, describes how 2D normalized device coordinates - {(x, y) | x in [-1, 1], y in [-1, 1]} map to a ray in 3D world space. The inner + `transform`, describing how local 3D space is mapped to world 3D space. Its other + transform, `projection`, describes how 2D normalized device coordinates + {(x, y) | x in [-1, 1], y in [-1, 1]} map to a ray in local 3D space. The inner product of these matrices can convert a 2D canvas position to a 3D ray eminating from the camera node into the world. + + Following OpenGL convention, a scenex camera uses a right-handed coordinate system, + where the positive z-axis points out of the screen, the positive x-axis points to + the right, and the positive y-axis points up. """ def __init__( @@ -64,3 +72,72 @@ def bounding_box(self) -> None: def passes_through(self, ray: Ray) -> float | None: return None + + @property + def forward(self) -> Vector3D: + """The forward direction of the camera in world space, as a unit vector.""" + position = self.transform.map((0, 0, 0))[:3] + further = self.transform.map((0, 0, -1))[:3] + vector = further - position + return tuple(vector / np.linalg.norm(vector)) + + @forward.setter + def forward(self, arg: Vector3D) -> None: + """Sets the forward direction of the camera.""" + # Compute the quaternion needed to rotate from the current forward direction to + # the desired forward direction + rot_quat = la.quat_from_vecs(self.forward, arg) + rot_axis, rot_angle = la.quat_to_axis_angle(rot_quat) + + # Rotate around the camera's current position + position = self.transform.map((0, 0, 0))[:3] + self.transform = ( + self.transform.translated(-position) + .rotated(rot_angle * 180 / math.pi, rot_axis) + .translated(position) + ) + + @property + def up(self) -> Vector3D: + """The up direction of the camera in world space, as a unit vector.""" + return tuple(self.transform.map((0, 1, 0)) - self.transform.map((0, 0, 0)))[:3] + + @up.setter + def up(self, arg: Vector3D) -> None: + """Sets the up direction of the camera. + + Does not affect the forward direction of the camera so long as the new up + direction is perpendicular to the existing forward direction. + """ + # Compute the quaternion needed to rotate from the current up direction to + # the desired up direction + rot_quat = la.quat_from_vecs(self.up, arg) + rot_axis, rot_angle = la.quat_to_axis_angle(rot_quat) + + # Rotate around the camera's current position + position = self.transform.map((0, 0, 0))[:3] + self.transform = ( + self.transform.translated(-position) + .rotated(rot_angle * 180 / math.pi, rot_axis) + .translated(position) + ) + + def look_at(self, target: Position3D, /, *, up: Vector3D | None = None) -> None: + """Adjusts the camera to look at a target point in the world. + + Parameters + ---------- + target: Position3D + The position in 3D space that the camera should look at. + up: Vector3D, optional + The up direction for the camera. If provided, this vector must be + perpendicular to the forward vector that results from looking at target. + """ + position = self.transform.map((0, 0, 0))[:3] + self.forward = tuple(target - position) + if up is not None: + if np.linalg.norm(up) == 0: + raise ValueError("Up vector must be non-zero.") + if np.abs(np.dot(self.forward, up)) > 1e-6: + raise ValueError("Up vector must be perpendicular to forward vector.") + self.up = up diff --git a/tests/model/_nodes/test_camera.py b/tests/model/_nodes/test_camera.py new file mode 100644 index 00000000..371167e4 --- /dev/null +++ b/tests/model/_nodes/test_camera.py @@ -0,0 +1,41 @@ +import numpy as np + +import scenex as snx + + +def test_camera_forward_property() -> None: + cam = snx.Camera(transform=snx.Transform()) + # Default forward should be (0, 0, -1) + np.testing.assert_allclose(cam.forward, (0, 0, -1), atol=1e-6) + # Set forward to (0, 0, 1) + cam.forward = (0, 0, 1) + # Test that the camera transform maps (0, 0, -1) to our new forward + new_fwd = cam.transform.map((0, 0, -1))[:3] + new_fwd /= np.linalg.norm(new_fwd) + np.testing.assert_allclose(new_fwd, (0, 0, 1), atol=1e-6) + + +def test_camera_up_property() -> None: + cam = snx.Camera(transform=snx.Transform()) + # Default up should be (0, 1, 0) + np.testing.assert_allclose(cam.up, (0, 1, 0), atol=1e-6) + # Set up to (1, 0, 0) + cam.up = (1, 0, 0) + # Test that the camera transform maps (0, 1, 0) to our new up + new_fwd = cam.transform.map((0, 1, 0))[:3] + new_fwd /= np.linalg.norm(new_fwd) + np.testing.assert_allclose(new_fwd, (1, 0, 0), atol=1e-6) + # Test that the camera forward is still the default + new_fwd = cam.transform.map((0, 0, -1))[:3] + new_fwd /= np.linalg.norm(new_fwd) + np.testing.assert_allclose(new_fwd, (0, 0, -1), atol=1e-6) + + +def test_camera_look_at() -> None: + cam = snx.Camera(transform=snx.Transform()) + # Look at (0, 0, 1) with up (0, 0, 1) + cam.look_at((1, 0, 0), up=(0, 0, 1)) + # Forward should be (1, 0, 0) - (0, 0, 0) = (1, 0, 0) + np.testing.assert_allclose(cam.forward, (1, 0, 0), atol=1e-6) + # Up should be (0, 0, 1) - (0, 0, 0) = (0, 0, 1) + np.testing.assert_allclose(cam.up, (0, 0, 1), atol=1e-6) From 3a2f83582f93dd979d6313576ba575889c8cbd64 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 2 Sep 2025 15:10:08 -0500 Subject: [PATCH 058/120] test events backends --- src/scenex/adaptors/_pygfx/_canvas.py | 13 +- src/scenex/adaptors/_vispy/_canvas.py | 5 +- src/scenex/events/__init__.py | 1 + src/scenex/events/_auto.py | 7 +- src/scenex/events/_jupyter.py | 51 +++---- src/scenex/events/_qt.py | 37 +++-- src/scenex/events/_wx.py | 41 +++--- src/scenex/events/controllers.py | 4 + src/scenex/events/events.py | 57 ++------ src/scenex/model/_canvas.py | 68 ++++++++- src/scenex/model/_nodes/node.py | 3 +- src/scenex/model/_view.py | 3 +- tests/events/test_jupyter.py | 201 ++++++++++++++++++++++++++ tests/events/test_qt.py | 160 ++++++++++++++++++++ tests/events/test_wx.py | 175 ++++++++++++++++++++++ 15 files changed, 688 insertions(+), 138 deletions(-) create mode 100644 tests/events/test_jupyter.py create mode 100644 tests/events/test_qt.py create mode 100644 tests/events/test_wx.py diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index 06d42b5b..50428b38 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -4,7 +4,6 @@ from scenex.adaptors._base import CanvasAdaptor from scenex.events._auto import GuiFrontend, app, determine_app -from scenex.events.events import _handle_event from ._adaptor_registry import get_adaptor @@ -50,6 +49,7 @@ def sizeHint(self) -> QSize: if frontend == GuiFrontend.WX: # ...still not working # import rendercanvas.wx + # rendercanvas.wx.loop._rc_init() # return rendercanvas.wx.WxRenderWidget from wgpu.gui.wx import WxWgpuCanvas @@ -72,16 +72,15 @@ def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: self._views: list[model.View] = [] for view in canvas.views: self._snx_add_view(view) - self._filter = app().install_event_filter( - self._wgpu_canvas, canvas, lambda e: _handle_event(canvas, e) - ) + self._filter = app().install_event_filter(self._snx_get_window_ref(), canvas) def _snx_get_native(self) -> BaseRenderCanvas: return self._wgpu_canvas def _snx_get_window_ref(self) -> Any: - if window := getattr(self._wgpu_canvas, "_window", None): - return window + if subwdg := getattr(self._wgpu_canvas, "_subwidget", None): + # wx backend has a _subwidget attribute that is the actual widget + return subwdg return self._wgpu_canvas def _snx_set_visible(self, arg: bool) -> None: @@ -94,6 +93,8 @@ def _draw(self) -> None: def _snx_add_view(self, view: model.View) -> None: # This logic should go in the canvas node, I think + if view in self._views: + return self._views.append(view) # FIXME: Allow customization diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index ab2a5216..0c8799ae 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -6,7 +6,6 @@ from scenex.adaptors._base import CanvasAdaptor from scenex.events._auto import app -from scenex.events.events import _handle_event from ._adaptor_registry import get_adaptor @@ -42,9 +41,7 @@ def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: self._views: list[View] = [] for view in canvas.views: self._snx_add_view(view) - self._filter = app().install_event_filter( - self._canvas.native, canvas, lambda e: _handle_event(canvas, e) - ) + self._filter = app().install_event_filter(self._canvas.native, canvas) self._visual_to_node: dict[VisualNode, model.Node | None] = {} self._last_canvas_pos: tuple[float, float] | None = None diff --git a/src/scenex/events/__init__.py b/src/scenex/events/__init__.py index cf053115..11dbd39a 100644 --- a/src/scenex/events/__init__.py +++ b/src/scenex/events/__init__.py @@ -1,5 +1,6 @@ """The Scenex Event Abstraction.""" +from ._auto import App, determine_app from .events import Event, MouseButton, MouseEvent, Ray, WheelEvent __all__ = ["Event", "MouseButton", "MouseEvent", "Ray", "WheelEvent"] diff --git a/src/scenex/events/_auto.py b/src/scenex/events/_auto.py index 4e3da906..c5ba0b6d 100644 --- a/src/scenex/events/_auto.py +++ b/src/scenex/events/_auto.py @@ -7,11 +7,10 @@ from typing import TYPE_CHECKING, cast if TYPE_CHECKING: - from collections.abc import Callable, Iterator + from collections.abc import Iterator from typing import Any from scenex.adaptors._base import CanvasAdaptor - from scenex.events import Event from scenex.model import Canvas @@ -79,9 +78,7 @@ def show(self, canvas: CanvasAdaptor, visible: bool) -> None: """Show or hide the canvas.""" raise NotImplementedError("Must be implemented by subclasses.") - def install_event_filter( - self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] - ) -> EventFilter: + def install_event_filter(self, canvas: Any, model_canvas: Canvas) -> EventFilter: raise NotImplementedError("Must be implemented by subclasses.") diff --git a/src/scenex/events/_jupyter.py b/src/scenex/events/_jupyter.py index 82cac3ca..8f262995 100644 --- a/src/scenex/events/_jupyter.py +++ b/src/scenex/events/_jupyter.py @@ -14,20 +14,16 @@ from scenex import Canvas from scenex.adaptors._base import CanvasAdaptor - from scenex.events.events import Event class JupyterEventFilter(EventFilter): - def __init__( - self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] - ) -> None: + def __init__(self, canvas: Any, model_canvas: Canvas) -> None: if not isinstance(canvas, RemoteFrameBuffer): raise TypeError( f"Expected canvas to be RemoteFrameBuffer, got {type(canvas)}" ) self._canvas = canvas self._model_canvas = model_canvas - self._filter_func = filter_func self._active_button: MouseButton = MouseButton.NONE self._old_event = self._canvas.handle_event @@ -36,12 +32,13 @@ def _create_handler( filter: JupyterEventFilter, ) -> Callable[[RemoteFrameBuffer, dict], None]: def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: - filter._active_button = MouseButton.NONE etype = ev["event_type"] + print(etype) if etype == "pointer_move": + filter._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) canvas_pos = (ev["x"], ev["y"]) if world_ray := filter._model_canvas.to_world(canvas_pos): - filter._filter_func( + filter._model_canvas.handle( MouseEvent( type="move", canvas_pos=canvas_pos, @@ -51,36 +48,28 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: ) elif etype == "pointer_down": canvas_pos = (ev["x"], ev["y"]) - filter._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) + btn = JupyterEventFilter.mouse_btn(ev["button"]) + filter._active_button |= btn if world_ray := filter._model_canvas.to_world(canvas_pos): - filter._filter_func( + filter._model_canvas.handle( MouseEvent( type="press", canvas_pos=canvas_pos, world_ray=world_ray, - buttons=filter._active_button, + buttons=btn, ) ) elif etype == "double_click": btn = JupyterEventFilter.mouse_btn(ev["button"]) canvas_pos = (ev["x"], ev["y"]) if world_ray := filter._model_canvas.to_world(canvas_pos): - # Note that in Jupyter, a double_click event is not a pointer - # event and as such, we need to handle both press and release. - # See + # FIXME: in Jupyter, a double_click event is not a pointer + # event. In other words, there will be no release following. + # This could cause unintended behavior. See # https://github.com/vispy/jupyter_rfb/blob/62831dd5a87bc19b4fd5f921d802ed21141e61ec/js/lib/widget.js#L270 - filter._filter_func( + filter._model_canvas.handle( MouseEvent( - type="press", - canvas_pos=canvas_pos, - world_ray=world_ray, - buttons=btn, - ) - ) - # Release - filter._filter_func( - MouseEvent( - type="release", + type="double_press", canvas_pos=canvas_pos, world_ray=world_ray, buttons=btn, @@ -88,9 +77,9 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: ) elif etype == "pointer_up": canvas_pos = (ev["x"], ev["y"]) - filter._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) + filter._active_button &= ~JupyterEventFilter.mouse_btn(ev["button"]) if world_ray := filter._model_canvas.to_world(canvas_pos): - filter._filter_func( + filter._model_canvas.handle( MouseEvent( type="release", canvas_pos=canvas_pos, @@ -100,8 +89,10 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: ) elif etype == "wheel": canvas_pos = (ev["x"], ev["y"]) + btn = JupyterEventFilter.mouse_btn(ev["button"]) + filter._active_button |= btn if world_ray := filter._model_canvas.to_world(canvas_pos): - filter._filter_func( + filter._model_canvas.handle( WheelEvent( type="wheel", canvas_pos=canvas_pos, @@ -162,10 +153,8 @@ def run(self) -> None: # No explicit run method needed for Jupyter pass - def install_event_filter( - self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] - ) -> EventFilter: - return JupyterEventFilter(canvas, model_canvas, filter_func) + def install_event_filter(self, canvas: Any, model_canvas: Canvas) -> EventFilter: + return JupyterEventFilter(canvas, model_canvas) def show(self, canvas: CanvasAdaptor, visible: bool) -> None: native_canvas = cast("RemoteFrameBuffer", canvas._snx_get_window_ref()) diff --git a/src/scenex/events/_qt.py b/src/scenex/events/_qt.py index a4bf1966..0dd39205 100644 --- a/src/scenex/events/_qt.py +++ b/src/scenex/events/_qt.py @@ -11,7 +11,6 @@ from scenex.events.events import MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: - from collections.abc import Callable from typing import Any from scenex import Canvas @@ -20,19 +19,16 @@ class QtEventFilter(QObject, EventFilter): - def __init__( - self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] - ) -> None: + def __init__(self, canvas: Any, model_canvas: Canvas) -> None: super().__init__() self._canvas = canvas self._model_canvas = model_canvas - self._filter_func = filter_func - self._active_button: MouseButton = MouseButton.NONE + self._active_buttons: MouseButton = MouseButton.NONE def eventFilter(self, a0: QObject | None = None, a1: QEvent | None = None) -> bool: if isinstance(a0, QWidget) and isinstance(a1, QEvent): if evt := self._convert_event(a1): - return self._filter_func(evt) + return self._model_canvas.handle(evt) return False def uninstall(self) -> None: @@ -63,31 +59,34 @@ def _convert_event(self, qevent: QEvent) -> Event | None: type="move", canvas_pos=canvas_pos, world_ray=ray, - buttons=self._active_button, + buttons=self._active_buttons, ) elif etype == QEvent.Type.MouseButtonDblClick: - self._active_button |= btn + self._active_buttons |= btn return MouseEvent( - type="double_click", + type="double_press", canvas_pos=canvas_pos, world_ray=ray, - buttons=self._active_button, + buttons=btn, ) elif etype == QEvent.Type.MouseButtonPress: - self._active_button |= btn + self._active_buttons |= btn return MouseEvent( type="press", canvas_pos=canvas_pos, world_ray=ray, - buttons=self._active_button, + buttons=btn, ) + # FIXME user might want to know (a) which button was just released + # and (b) which buttons are still pressed. (a) is likely more common, but we + # may want to revise the design. elif etype == QEvent.Type.MouseButtonRelease: - self._active_button &= ~btn + self._active_buttons &= ~btn return MouseEvent( type="release", canvas_pos=canvas_pos, world_ray=ray, - buttons=self._active_button, + buttons=btn, ) elif isinstance(qevent, QWheelEvent): # TODO: Figure out the buttons @@ -99,7 +98,7 @@ def _convert_event(self, qevent: QEvent) -> Event | None: type="wheel", canvas_pos=canvas_pos, world_ray=ray, - buttons=self._active_button, + buttons=self._active_buttons, angle_delta=(qevent.angleDelta().x(), qevent.angleDelta().y()), ) @@ -136,10 +135,8 @@ def run(self) -> None: app.exec() - def install_event_filter( - self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] - ) -> EventFilter: - f = QtEventFilter(canvas, model_canvas, filter_func) + def install_event_filter(self, canvas: Any, model_canvas: Canvas) -> EventFilter: + f = QtEventFilter(canvas, model_canvas) cast("QWidget", canvas).installEventFilter(f) return f diff --git a/src/scenex/events/_wx.py b/src/scenex/events/_wx.py index 25a147ca..06458ae2 100644 --- a/src/scenex/events/_wx.py +++ b/src/scenex/events/_wx.py @@ -8,11 +8,8 @@ from scenex.events.events import MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: - from collections.abc import Callable - from scenex import Canvas from scenex.adaptors._base import CanvasAdaptor - from scenex.events.events import Event class WxEventFilter(EventFilter): @@ -20,14 +17,9 @@ def __init__( self, canvas: wx.Window, model_canvas: Canvas, - filter_func: Callable[[Event], bool], ) -> None: - if swdg := getattr(canvas, "_subwidget", None): - canvas = swdg - self._canvas = canvas self._model_canvas = model_canvas - self._filter_func = filter_func self._active_button: MouseButton = MouseButton.NONE self._install_events() @@ -56,12 +48,9 @@ def _on_mouse_down(self, event: wx.MouseEvent) -> None: self._active_button |= btn pos = event.GetPosition() if ray := self._model_canvas.to_world((pos.x, pos.y)): - self._filter_func( + self._model_canvas.handle( MouseEvent( - type="press", - canvas_pos=(pos.x, pos.y), - world_ray=ray, - buttons=self._active_button, + type="press", canvas_pos=(pos.x, pos.y), world_ray=ray, buttons=btn ) ) event.Skip() @@ -71,21 +60,20 @@ def _on_mouse_up(self, event: wx.MouseEvent) -> None: self._active_button &= ~btn pos = event.GetPosition() if ray := self._model_canvas.to_world((pos.x, pos.y)): - self._filter_func( + self._model_canvas.handle( MouseEvent( type="release", canvas_pos=(pos.x, pos.y), world_ray=ray, - buttons=self._active_button, + buttons=btn, ) ) event.Skip() def _on_mouse_move(self, event: wx.MouseEvent) -> None: pos = event.GetPosition() - print(pos) if ray := self._model_canvas.to_world((pos.x, pos.y)): - self._filter_func( + self._model_canvas.handle( MouseEvent( type="move", canvas_pos=(pos.x, pos.y), @@ -98,13 +86,20 @@ def _on_mouse_move(self, event: wx.MouseEvent) -> None: def _on_wheel(self, event: wx.MouseEvent) -> None: pos = event.GetPosition() if ray := self._model_canvas.to_world((pos.x, pos.y)): - self._filter_func( + if event.GetWheelAxis() == 0: + # Vertical Scroll + angle_delta = (0, event.GetWheelRotation()) + else: + # Horizontal Scroll + angle_delta = (event.GetWheelRotation(), 0) + + self._model_canvas.handle( WheelEvent( type="wheel", canvas_pos=(pos.x, pos.y), world_ray=ray, buttons=self._active_button, - angle_delta=(event.GetWheelRotation(), 0), + angle_delta=angle_delta, ) ) event.Skip() @@ -123,6 +118,8 @@ class WxAppWrap(App): """Provider for wxPython.""" def create_app(self) -> Any: + if wx.App.Get(): + return wx.App.Get() return wx.App(False) def run(self) -> None: @@ -139,11 +136,9 @@ def install_event_filter( self, canvas: wx.Window, model_canvas: Canvas, - filter_func: Callable[[Event], bool], ) -> EventFilter: - return WxEventFilter(canvas, model_canvas, filter_func) + return WxEventFilter(canvas, model_canvas) def show(self, canvas: CanvasAdaptor, visible: bool) -> None: window = canvas._snx_get_window_ref() - if window and window.IsOk(): - wx.CallAfter(window.Show, visible) + wx.CallAfter(window.Show, visible) diff --git a/src/scenex/events/controllers.py b/src/scenex/events/controllers.py index 456221a2..a3174369 100644 --- a/src/scenex/events/controllers.py +++ b/src/scenex/events/controllers.py @@ -66,6 +66,10 @@ def __call__(self, event: Event, node: Node) -> bool: # d. Translating by the centerpoint, to reorient the camera around # that centerpoint. + # FIXME: There's a problem evident when going crazy with orbit where the + # up vector gets distorted (i.e. is not in the plane of forward and + # polar axes). + # Step 0: Gather transform components, relative to camera center orbit_mat = node.transform.translated(-self.center) position, rotation, _scale = la.mat_decompose(orbit_mat.T) diff --git a/src/scenex/events/events.py b/src/scenex/events/events.py index 21416173..2e19a17e 100644 --- a/src/scenex/events/events.py +++ b/src/scenex/events/events.py @@ -2,12 +2,7 @@ from dataclasses import dataclass from enum import IntFlag, auto -from typing import TYPE_CHECKING, NamedTuple - -if TYPE_CHECKING: - from typing import Any - - from scenex.model import Canvas, Node +from typing import NamedTuple @dataclass @@ -17,6 +12,11 @@ class Event: # TODO: Enum? type: str + def __eq__(self, value): + if not isinstance(value, Event): + return NotImplemented + return self.type == value.type + class MouseButton(IntFlag): """A general mouse interaction event.""" @@ -33,6 +33,12 @@ class Ray(NamedTuple): origin: tuple[float, float, float] direction: tuple[float, float, float] + def point_at_distance(self, distance: float) -> tuple[float, float, float]: + x = self.origin[0] + self.direction[0] * distance + y = self.origin[1] + self.direction[1] * distance + z = self.origin[2] + self.direction[2] * distance + return (x, y, z) + @dataclass class MouseEvent(Event): @@ -51,42 +57,3 @@ class WheelEvent(MouseEvent): """A mouse interaction event describing wheel movement.""" angle_delta: tuple[float, float] - - -def _handle_event(canvas: Canvas, event: Event) -> bool: - handled = False - if isinstance(event, MouseEvent): - if view := canvas._containing_view(event.canvas_pos): - through: list[tuple[Node, float]] = [] - for child in view.scene.children: - if (d := child.passes_through(event.world_ray)) is not None: - through.append((child, d)) - - # FIXME: Consider only reporting the first? - # Or do we only report until we hit a node with opacity=1? - for node, _depth in sorted(through, key=lambda e: e[1]): - # Filter through parent scenes to child - handled |= _filter_through(event, node, node) - # No nodes in the view handled the event - pass it to the camera - if not handled and view.camera.interactive: - handled |= view.camera.filter_event(event, view.camera) - - canvas._get_adaptors() - return handled - - -def _filter_through(event: Any, node: Node, target: Node) -> bool: - """Filter the event through the scene graph to the target node.""" - # TODO: Suppose a scene is not interactive. If the node is interactive, should it - # receive the event? - - # First give this node a chance to filter the event. - - if node.interactive and node.filter_event(event, target): - # Node filtered out the event, so we stop here. - return True - if (parent := node.parent) is None: - # Node did not filter out the event, and we've reached the top of the graph. - return False - # Recursively filter the event through node's parent. - return _filter_through(event, parent, target) diff --git a/src/scenex/model/_canvas.py b/src/scenex/model/_canvas.py index 816410c1..8a541932 100644 --- a/src/scenex/model/_canvas.py +++ b/src/scenex/model/_canvas.py @@ -1,5 +1,6 @@ from __future__ import annotations +from collections.abc import Sequence from typing import TYPE_CHECKING, Any, cast import numpy as np @@ -7,13 +8,14 @@ from cmap import Color from pydantic import ConfigDict, Field -from scenex.events.events import Ray +from scenex.events.events import Event, MouseEvent, Ray from ._base import EventedBase from ._evented_list import EventedList from ._view import View # noqa: TC001 if TYPE_CHECKING: + from scenex import Node from scenex.adaptors._base import CanvasAdaptor @@ -38,8 +40,35 @@ class Canvas(EventedBase): def model_post_init(self, __context: Any) -> None: """Post-initialization hook for the model.""" + # Update all current views for view in self.views: view._canvas = self + # Update all views added later + self.views.item_inserted.connect(self._on_view_inserted) + self.views.item_changed.connect(self._on_view_changed) + self.views.item_removed.connect(self._on_view_removed) + + def _on_view_inserted(self, idx: int, view: View) -> None: + view._canvas = self + + def _on_view_removed(self, idx: int, view: View) -> None: + view._canvas = None + + def _on_view_changed( + self, + idx: int | slice, + old_view: View | Sequence[View], + new_view: View | Sequence[View], + ) -> None: + if not isinstance(old_view, Sequence): + old_view = [old_view] + for view in old_view: + view._canvas = None + + if not isinstance(new_view, Sequence): + new_view = [new_view] + for view in new_view: + view._canvas = self @property def size(self) -> tuple[int, int]: @@ -57,6 +86,43 @@ def render(self) -> np.ndarray: return cast("CanvasAdaptor", adaptors[0])._snx_render() raise RuntimeError("No adaptor found for Canvas.") + def handle(self, event: Event) -> bool: + """Handle the passed event.""" + handled = False + if isinstance(event, MouseEvent): + if view := self._containing_view(event.canvas_pos): + through: list[tuple[Node, float]] = [] + for child in view.scene.children: + if (d := child.passes_through(event.world_ray)) is not None: + through.append((child, d)) + + # FIXME: Consider only reporting the first? + # Or do we only report until we hit a node with opacity=1? + for node, _depth in sorted(through, key=lambda e: e[1]): + # Filter through parent scenes to child + handled |= Canvas._filter_through(event, node, node) + # No nodes in the view handled the event - pass it to the camera + if not handled and view.camera.interactive: + handled |= view.camera.filter_event(event, view.camera) + return handled + + @staticmethod + def _filter_through(event: Any, node: Node, target: Node) -> bool: + """Filter the event through the scene graph to the target node.""" + # TODO: Suppose a scene is not interactive. If the node is interactive, should + # it receive the event? + + # First give this node a chance to filter the event. + + if node.interactive and node.filter_event(event, target): + # Node filtered out the event, so we stop here. + return True + if (parent := node.parent) is None: + # Node did not filter out the event, and we've reached the top of the graph. + return False + # Recursively filter the event through node's parent. + return Canvas._filter_through(event, parent, target) + def to_world(self, canvas_pos: tuple[float, float]) -> Ray | None: """Map XY canvas position (pixels) to XYZ coordinate in world space.""" # Code adapted from: diff --git a/src/scenex/model/_nodes/node.py b/src/scenex/model/_nodes/node.py index 1f79693f..dac24660 100644 --- a/src/scenex/model/_nodes/node.py +++ b/src/scenex/model/_nodes/node.py @@ -27,8 +27,7 @@ import numpy.typing as npt from typing_extensions import Self, TypedDict, Unpack - from scenex.events import Event - from scenex.events.events import Ray + from scenex.events import Event, Ray from .camera import Camera from .image import Image diff --git a/src/scenex/model/_view.py b/src/scenex/model/_view.py index 09ea9747..dd89e8be 100644 --- a/src/scenex/model/_view.py +++ b/src/scenex/model/_view.py @@ -72,7 +72,8 @@ def canvas(self) -> Canvas: @canvas.setter def canvas(self, value: Canvas) -> None: self._canvas = value - self._canvas.views.append(self) + if self not in value.views: + value.views.append(self) def render(self) -> np.ndarray: """Render the view to an array.""" diff --git a/tests/events/test_jupyter.py b/tests/events/test_jupyter.py new file mode 100644 index 00000000..19243dc0 --- /dev/null +++ b/tests/events/test_jupyter.py @@ -0,0 +1,201 @@ +"""Tests pertaining to Jupyter event generation""" + +from __future__ import annotations + +from unittest.mock import MagicMock + +import pytest + +import scenex as snx +from scenex.events._auto import GuiFrontend, determine_app +from scenex.events.events import MouseButton, MouseEvent, Ray, WheelEvent +from scenex.model._transform import Transform + +if determine_app() != GuiFrontend.JUPYTER: + pytest.skip( + "Skipping Jupyter tests as Jupyter will not be used in this environment", + allow_module_level=True, + ) + + +@pytest.fixture +def evented_canvas() -> snx.Canvas: + camera = snx.Camera(transform=Transform(), interactive=True) + scene = snx.Scene(children=[]) + view = snx.View(scene=scene, camera=camera) + canvas = snx.Canvas() + canvas.views.append(view) + _native = canvas._get_adaptors(create=True)[0]._snx_get_native() + return canvas + + +def _validate_ray(maybe_ray: Ray | None) -> Ray: + assert maybe_ray is not None + return maybe_ray + + +# See jupyter_rfb.events +LEFT_MOUSE = 1 +RIGHT_MOUSE = 2 + + +def test_pointer_down(evented_canvas: snx.Canvas): + native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + # Press the left button + native.handle_event( + { + "event_type": "pointer_down", + "x": press_point[0], + "y": press_point[1], + "button": LEFT_MOUSE, + } + ) + mock.assert_called_once_with( + MouseEvent( + "press", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + mock.reset_mock() + + # Now press the right button as well + native.handle_event( + { + "event_type": "pointer_down", + "x": press_point[0], + "y": press_point[1], + "button": RIGHT_MOUSE, + } + ) + mock.assert_called_once_with( + MouseEvent( + "press", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.RIGHT, + ), + evented_canvas.views[0].camera, + ) + + +def test_pointer_up(evented_canvas: snx.Canvas): + native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + native.handle_event( + { + "event_type": "pointer_up", + "x": press_point[0], + "y": press_point[1], + "button": LEFT_MOUSE, + } + ) + mock.assert_called_once_with( + MouseEvent( + "release", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + + +def test_pointer_move(evented_canvas: snx.Canvas): + native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + native.handle_event( + { + "event_type": "pointer_move", + "x": press_point[0], + "y": press_point[1], + "button": LEFT_MOUSE, + } + ) + mock.assert_called_once_with( + MouseEvent( + "move", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + + native.handle_event( + { + "event_type": "pointer_move", + "x": press_point[0], + "y": press_point[1], + "buttons": (LEFT_MOUSE, RIGHT_MOUSE), + } + ) + mock.assert_called_once_with( + MouseEvent( + "move", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT | MouseButton.RIGHT, + ), + evented_canvas.views[0].camera, + ) + + +def test_mouse_double_click(evented_canvas: snx.Canvas): + native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + native.handle_event( + { + "event_type": "double_click", + "x": press_point[0], + "y": press_point[1], + "button": LEFT_MOUSE, + } + ) + mock.assert_called_once_with( + MouseEvent( + "double_press", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + + +def test_wheel(evented_canvas: snx.Canvas): + native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + native.handle_event( + { + "event_type": "wheel", + "x": press_point[0], + "y": press_point[1], + "delta_x": 0, + "delta_y": 120, + "button": LEFT_MOUSE, + } + ) + mock.assert_called_once_with( + WheelEvent( + "wheel", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + angle_delta=(0, 120), + ), + evented_canvas.views[0].camera, + ) diff --git a/tests/events/test_qt.py b/tests/events/test_qt.py new file mode 100644 index 00000000..a8548c57 --- /dev/null +++ b/tests/events/test_qt.py @@ -0,0 +1,160 @@ +"""Tests pertaining to VisPy adaptors""" + +from __future__ import annotations + +from typing import TYPE_CHECKING +from unittest.mock import MagicMock + +import pytest + +import scenex as snx +from scenex.events._auto import GuiFrontend, determine_app +from scenex.events.events import MouseButton, MouseEvent, Ray +from scenex.model._transform import Transform + +if determine_app() == GuiFrontend.QT: + from qtpy.QtCore import QPoint, Qt + + if TYPE_CHECKING: + from pytestqt.qtbot import QtBot +else: + pytest.skip( + "Skipping Qt tests as Qt will not be used in this environment", + allow_module_level=True, + ) + + +@pytest.fixture +def evented_canvas(qtbot: QtBot) -> snx.Canvas: + camera = snx.Camera(transform=Transform(), interactive=True) + scene = snx.Scene(children=[]) + view = snx.View(scene=scene, camera=camera) + canvas = snx.Canvas() + canvas.views.append(view) + native = canvas._get_adaptors(create=True)[0]._snx_get_native() + qtbot.addWidget(native) + return canvas + + +def _validate_ray(maybe_ray: Ray | None) -> Ray: + assert maybe_ray is not None + return maybe_ray + + +def test_mouse_press(evented_canvas: snx.Canvas, qtbot: QtBot): + native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + # Press the left button + qtbot.mousePress(native, Qt.MouseButton.LeftButton, pos=QPoint(*press_point)) + mock.assert_called_once_with( + MouseEvent( + "press", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + mock.reset_mock() + + # Now press the right button + qtbot.mousePress(native, Qt.MouseButton.RightButton, pos=QPoint(*press_point)) + mock.assert_called_once_with( + MouseEvent( + "press", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.RIGHT, + ), + evented_canvas.views[0].camera, + ) + + +def test_mouse_release(evented_canvas: snx.Canvas, qtbot: QtBot): + native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + qtbot.mouseRelease(native, Qt.MouseButton.LeftButton, pos=QPoint(*press_point)) + mock.assert_called_once_with( + MouseEvent( + "release", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + + +def test_mouse_move(evented_canvas: snx.Canvas, qtbot: QtBot): + native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + # FIXME: For some reason the mouse press is necessary for processing events? + qtbot.mousePress(native, Qt.MouseButton.LeftButton, pos=QPoint(*press_point)) + qtbot.mousePress(native, Qt.MouseButton.RightButton, pos=QPoint(*press_point)) + mock.reset_mock() + qtbot.mouseMove(native, pos=QPoint(*press_point)) + mock.assert_called_once_with( + MouseEvent( + "move", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT | MouseButton.RIGHT, + ), + evented_canvas.views[0].camera, + ) + + +def test_mouse_click(evented_canvas: snx.Canvas, qtbot: QtBot): + native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + qtbot.mouseClick(native, Qt.MouseButton.LeftButton, pos=QPoint(*press_point)) + assert mock.call_args_list[0].args == ( + MouseEvent( + "press", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + assert mock.call_args_list[1].args == ( + MouseEvent( + "release", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + + +def test_mouse_double_click(evented_canvas: snx.Canvas, qtbot: QtBot): + native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + # Note that in Qt a double click does NOT implicitly imply a release as well. + qtbot.mouseDClick(native, Qt.MouseButton.LeftButton, pos=QPoint(*press_point)) + assert mock.call_args_list[0].args == ( + MouseEvent( + "double_press", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + + +# TODO: Implement when Qt new enough +# https://doc.qt.io/qt-6/qtest.html#wheelEvent +# def test_wheel(evented_canvas: snx.Canvas): +# pass diff --git a/tests/events/test_wx.py b/tests/events/test_wx.py new file mode 100644 index 00000000..b5a72be0 --- /dev/null +++ b/tests/events/test_wx.py @@ -0,0 +1,175 @@ +"""Tests pertaining to WxPython canvas events.""" + +from __future__ import annotations + +from typing import TYPE_CHECKING, cast +from unittest.mock import MagicMock + +import pytest + +import scenex as snx +from scenex.events._auto import GuiFrontend, app, determine_app +from scenex.events.events import MouseButton, MouseEvent, Ray, WheelEvent +from scenex.model._transform import Transform + +if TYPE_CHECKING: + from collections.abc import Iterator + from typing import Any + + from scenex.adaptors._base import CanvasAdaptor + +if determine_app() == GuiFrontend.WX: + import wx +else: + pytest.skip( + "Skipping WxPython tests as WxPython will not be used in this environment", + allow_module_level=True, + ) + + +@pytest.fixture(scope="session") +def wxapp() -> Iterator[wx.App]: + yield app().create_app() + + +@pytest.fixture +def evented_canvas() -> snx.Canvas: + camera = snx.Camera(transform=Transform(), interactive=True) + scene = snx.Scene(children=[]) + canvas = snx.Canvas() + view = snx.View(scene=scene, camera=camera) + # FIXME: The canvas should take care of setting this. + view.canvas = canvas + canvas.views.append(view) + canvas._get_adaptors(create=True)[0]._snx_get_native() + return canvas + + +def _processEvent( + wxapp: wx.App, evt: wx.PyEventBinder, wdg: wx.Control, **kwargs: Any +) -> None: + """Simulates a wx event. + + Note that wx.UIActionSimulator is an alternative to this approach. + It seems to actually move the cursor around though, which is really annoying :) + """ + if evt == wx.EVT_ACTIVATE: + active = kwargs.get("active", True) + ev = wx.ActivateEvent(eventType=evt.typeId, active=active) + else: + ev = wx.MouseEvent(evt.typeId) + ev.SetPosition(kwargs["pos"]) + if rot := kwargs.get("rot"): + ev.SetWheelRotation(rot[1]) + ev.SetLeftDown(True) + + wx.PostEvent(wdg.GetEventHandler(), ev) + # Borrowed from: + # https://github.com/wxWidgets/Phoenix/blob/master/unittests/wtc.py#L41 + wdg.Show(True) + wx.MilliSleep(50) + evtLoop = wxapp.GetTraits().CreateEventLoop() + wx.EventLoopActivator(evtLoop) + evtLoop.YieldFor(wx.EVT_CATEGORY_ALL) # pyright: ignore[reportAttributeAccessIssue] + + +def _validate_ray(maybe_ray: Ray | None) -> Ray: + assert maybe_ray is not None + return maybe_ray + + +def test_mouse_press(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_window_ref() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + # Press the left button + _processEvent(wxapp, wx.EVT_LEFT_DOWN, native, pos=wx.Point(*press_point)) + mock.assert_called_once_with( + MouseEvent( + "press", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + mock.reset_mock() + + # Now press the right button + _processEvent(wxapp, wx.EVT_RIGHT_DOWN, native, pos=wx.Point(*press_point)) + mock.assert_called_once_with( + MouseEvent( + "press", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.RIGHT, + ), + evented_canvas.views[0].camera, + ) + + +def test_mouse_release(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_window_ref() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + _processEvent(wxapp, wx.EVT_LEFT_UP, native, pos=wx.Point(*press_point)) + mock.assert_called_once_with( + MouseEvent( + "release", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT, + ), + evented_canvas.views[0].camera, + ) + + +def test_mouse_move(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_window_ref() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + # FIXME: For some reason the mouse press is necessary for processing events? + _processEvent(wxapp, wx.EVT_LEFT_DOWN, native, pos=wx.Point(*press_point)) + _processEvent(wxapp, wx.EVT_RIGHT_DOWN, native, pos=wx.Point(*press_point)) + mock.reset_mock() + _processEvent(wxapp, wx.EVT_MOTION, native, pos=wx.Point(*press_point)) + mock.assert_called_once_with( + MouseEvent( + "move", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.LEFT | MouseButton.RIGHT, + ), + evented_canvas.views[0].camera, + ) + + +def test_mouse_wheel(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_window_ref() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + press_point = (5, 10) + _processEvent( + wxapp, wx.EVT_MOUSEWHEEL, native, pos=wx.Point(*press_point), rot=(0, 120) + ) + mock.assert_called_once_with( + WheelEvent( + "wheel", + press_point, + _validate_ray(evented_canvas.to_world(press_point)), + MouseButton.NONE, + angle_delta=(0, 120), + ), + evented_canvas.views[0].camera, + ) From cad94bfe236036b63fa4e148ecb8aa72cb7a87e6 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 3 Sep 2025 12:49:56 -0500 Subject: [PATCH 059/120] Try GLFW last --- src/scenex/events/_auto.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/scenex/events/_auto.py b/src/scenex/events/_auto.py index c5ba0b6d..b0840bb1 100644 --- a/src/scenex/events/_auto.py +++ b/src/scenex/events/_auto.py @@ -50,12 +50,12 @@ class GuiFrontend(str, Enum): GUI_PROVIDERS: dict[GuiFrontend, tuple[str, str]] = { - GuiFrontend.GLFW: ("scenex.events._glfw", "GlfwAppWrap"), GuiFrontend.QT: ("scenex.events._qt", "QtAppWrap"), GuiFrontend.WX: ("scenex.events._wx", "WxAppWrap"), # Note that Jupyter should go last because it is a guess based on IPython # which may be installed with the other frameworks as well. GuiFrontend.JUPYTER: ("scenex.events._jupyter", "JupyterAppWrap"), + GuiFrontend.GLFW: ("scenex.events._glfw", "GlfwAppWrap"), } From fc16036896c48782d69ed06610880700e27addad Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 3 Sep 2025 12:58:44 -0500 Subject: [PATCH 060/120] Add testqt for qt runs --- .github/workflows/ci.yml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 0083887f..11a64dfb 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -79,7 +79,7 @@ jobs: sudo apt install -y libegl1-mesa-dev libgl1-mesa-dri libxcb-xfixes0-dev mesa-vulkan-drivers - name: Install dependencies - run: uv sync --no-dev --group test --extra ${{ matrix.gfx }} --extra ${{matrix.canvas}} ${{ matrix.python-version != '3.10' && '--extra imgui' || '' }} + run: uv sync --no-dev --group test --extra ${{ matrix.gfx }} --extra ${{matrix.canvas}} ${{ matrix.python-version != '3.10' && '--extra imgui' || '' }} ${{ matrix.canvas == 'pyqt' && '--group testqt' || '' }} - name: Test shell: bash From 3c75a0a647de5cce7971d5059684591b02617762 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 3 Sep 2025 13:29:43 -0500 Subject: [PATCH 061/120] Fix Jupyter tests Minor GLFW fixes too --- .github/workflows/ci.yml | 2 +- pyproject.toml | 4 ++++ src/scenex/events/_auto.py | 2 +- src/scenex/events/_glfw.py | 22 +++++++--------------- src/scenex/events/_jupyter.py | 13 +++++++++---- tests/events/test_jupyter.py | 33 +++++++++++++++++++++++---------- 6 files changed, 45 insertions(+), 31 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 11a64dfb..0025a15a 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -79,7 +79,7 @@ jobs: sudo apt install -y libegl1-mesa-dev libgl1-mesa-dri libxcb-xfixes0-dev mesa-vulkan-drivers - name: Install dependencies - run: uv sync --no-dev --group test --extra ${{ matrix.gfx }} --extra ${{matrix.canvas}} ${{ matrix.python-version != '3.10' && '--extra imgui' || '' }} ${{ matrix.canvas == 'pyqt' && '--group testqt' || '' }} + run: uv sync --no-dev --group test --extra ${{ matrix.gfx }} --extra ${{matrix.canvas}} ${{ matrix.python-version != '3.10' && '--extra imgui' || '' }} ${{ matrix.canvas == 'pyqt' && '--group testqt' || '' }} ${{ matrix.canvas == 'jupyter' && '--group testjupyter' || '' }} - name: Test shell: bash diff --git a/pyproject.toml b/pyproject.toml index 247e352c..732584e8 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -63,6 +63,10 @@ imgui = [ [dependency-groups] test = ["pytest>=8", "pytest-cov>=6"] testqt = [{ include-group = "test" }, "pytest-qt >=4.4"] +testjupyter = [ + { include-group = "test" }, + "glfw", # Vispy in particular needs SOME backend to get an OpenGL context +] docs = [ "mike>=2.1.3", "mkdocs>=1.6.1", diff --git a/src/scenex/events/_auto.py b/src/scenex/events/_auto.py index b0840bb1..d17d1965 100644 --- a/src/scenex/events/_auto.py +++ b/src/scenex/events/_auto.py @@ -22,7 +22,7 @@ def uninstall(self) -> None: pass -GUI_ENV_VAR = "NDV_GUI_FRONTEND" +GUI_ENV_VAR = "SCENEX_WIDGET_BACKEND" """Preferred GUI frontend. If not set, the first available GUI frontend is used.""" _APP: App | None = None """Singleton instance of the current (GUI) application. Once set it shouldn't change.""" diff --git a/src/scenex/events/_glfw.py b/src/scenex/events/_glfw.py index e187216e..616a8c2c 100644 --- a/src/scenex/events/_glfw.py +++ b/src/scenex/events/_glfw.py @@ -8,12 +8,10 @@ from scenex.events.events import MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: - from collections.abc import Callable from typing import Any from scenex import Canvas from scenex.adaptors._base import CanvasAdaptor - from scenex.events.events import Event BUTTONMAP = { glfw.MOUSE_BUTTON_LEFT: MouseButton.LEFT, @@ -23,12 +21,8 @@ class GlfwEventFilter(EventFilter): - def __init__( - self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] - ) -> None: - print("Using GLFW Event Filter") + def __init__(self, canvas: Any, model_canvas: Canvas) -> None: self._canvas = model_canvas - self._filter_func = filter_func self._active_button: MouseButton = MouseButton.NONE self._window_id = self._guess_id(canvas) # TODO: Maybe save the old callbacks? @@ -57,7 +51,7 @@ def _cursor_pos_callback(self, window: Any, xpos: float, ypos: float) -> None: """Handle cursor position events.""" canvas_pos = (xpos, ypos) if ray := self._canvas.to_world(canvas_pos): - self._filter_func( + self._canvas.handle( MouseEvent( type="move", canvas_pos=canvas_pos, @@ -86,7 +80,7 @@ def _mouse_button_callback( if button in BUTTONMAP: if action == glfw.PRESS: self._active_button |= BUTTONMAP[button] - self._filter_func( + self._canvas.handle( MouseEvent( type="press", canvas_pos=pos, @@ -96,7 +90,7 @@ def _mouse_button_callback( ) elif action == glfw.RELEASE: self._active_button &= ~BUTTONMAP[button] - self._filter_func( + self._canvas.handle( MouseEvent( type="release", canvas_pos=pos, @@ -113,7 +107,7 @@ def _mouse_scroll_callback( return # Mouse wheel event - self._filter_func( + self._canvas.handle( WheelEvent( type="scroll", canvas_pos=pos, @@ -141,10 +135,8 @@ def run(self) -> None: "Uninstall GLFW and run another canvas framework." ) - def install_event_filter( - self, canvas: Any, model_canvas: Canvas, filter_func: Callable[[Event], bool] - ) -> EventFilter: - return GlfwEventFilter(canvas, model_canvas, filter_func) + def install_event_filter(self, canvas: Any, model_canvas: Canvas) -> EventFilter: + return GlfwEventFilter(canvas, model_canvas) def show(self, canvas: CanvasAdaptor, visible: bool) -> None: if visible: diff --git a/src/scenex/events/_jupyter.py b/src/scenex/events/_jupyter.py index 8f262995..e7443c30 100644 --- a/src/scenex/events/_jupyter.py +++ b/src/scenex/events/_jupyter.py @@ -33,9 +33,13 @@ def _create_handler( ) -> Callable[[RemoteFrameBuffer, dict], None]: def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: etype = ev["event_type"] - print(etype) if etype == "pointer_move": - filter._active_button |= JupyterEventFilter.mouse_btn(ev["button"]) + filter._active_button = MouseButton.NONE + if btn := ev.get("button", None): + filter._active_button |= JupyterEventFilter.mouse_btn(btn) + elif btns := ev.get("buttons", None): + for b in btns: + filter._active_button |= JupyterEventFilter.mouse_btn(b) canvas_pos = (ev["x"], ev["y"]) if world_ray := filter._model_canvas.to_world(canvas_pos): filter._model_canvas.handle( @@ -77,14 +81,15 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: ) elif etype == "pointer_up": canvas_pos = (ev["x"], ev["y"]) - filter._active_button &= ~JupyterEventFilter.mouse_btn(ev["button"]) + btn = JupyterEventFilter.mouse_btn(ev["button"]) + filter._active_button &= ~btn if world_ray := filter._model_canvas.to_world(canvas_pos): filter._model_canvas.handle( MouseEvent( type="release", canvas_pos=canvas_pos, world_ray=world_ray, - buttons=filter._active_button, + buttons=btn, ) ) elif etype == "wheel": diff --git a/tests/events/test_jupyter.py b/tests/events/test_jupyter.py index 19243dc0..2d548033 100644 --- a/tests/events/test_jupyter.py +++ b/tests/events/test_jupyter.py @@ -7,6 +7,7 @@ import pytest import scenex as snx +from scenex.adaptors._auto import determine_backend from scenex.events._auto import GuiFrontend, determine_app from scenex.events.events import MouseButton, MouseEvent, Ray, WheelEvent from scenex.model._transform import Transform @@ -17,9 +18,20 @@ allow_module_level=True, ) +# HACK: Enable tests inside vispy +if determine_backend() == "vispy": + import asyncio + import os + + os.environ["_VISPY_TESTING_APP"] = "jupyter_rfb" + asyncio.set_event_loop(asyncio.new_event_loop()) + + os.environ["SCENEX_WIDGET_BACKEND"] = "jupyter" + @pytest.fixture def evented_canvas() -> snx.Canvas: + # IPython.getIPython().run_line_magic("gui", "inline") camera = snx.Camera(transform=Transform(), interactive=True) scene = snx.Scene(children=[]) view = snx.View(scene=scene, camera=camera) @@ -39,11 +51,11 @@ def _validate_ray(maybe_ray: Ray | None) -> Ray: RIGHT_MOUSE = 2 -def test_pointer_down(evented_canvas: snx.Canvas): +def test_pointer_down(evented_canvas: snx.Canvas) -> None: native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) - press_point = (5, 10) + press_point = (0, 0) # Press the left button native.handle_event( { @@ -84,11 +96,11 @@ def test_pointer_down(evented_canvas: snx.Canvas): ) -def test_pointer_up(evented_canvas: snx.Canvas): +def test_pointer_up(evented_canvas: snx.Canvas) -> None: native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) - press_point = (5, 10) + press_point = (0, 0) native.handle_event( { "event_type": "pointer_up", @@ -108,11 +120,11 @@ def test_pointer_up(evented_canvas: snx.Canvas): ) -def test_pointer_move(evented_canvas: snx.Canvas): +def test_pointer_move(evented_canvas: snx.Canvas) -> None: native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) - press_point = (5, 10) + press_point = (0, 0) native.handle_event( { "event_type": "pointer_move", @@ -130,6 +142,7 @@ def test_pointer_move(evented_canvas: snx.Canvas): ), evented_canvas.views[0].camera, ) + mock.reset_mock() native.handle_event( { @@ -150,11 +163,11 @@ def test_pointer_move(evented_canvas: snx.Canvas): ) -def test_mouse_double_click(evented_canvas: snx.Canvas): +def test_mouse_double_click(evented_canvas: snx.Canvas) -> None: native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) - press_point = (5, 10) + press_point = (0, 0) native.handle_event( { "event_type": "double_click", @@ -174,11 +187,11 @@ def test_mouse_double_click(evented_canvas: snx.Canvas): ) -def test_wheel(evented_canvas: snx.Canvas): +def test_wheel(evented_canvas: snx.Canvas) -> None: native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) - press_point = (5, 10) + press_point = (0, 0) native.handle_event( { "event_type": "wheel", From b557efccc3011b075c249a75de1353ae89e61290 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 3 Sep 2025 16:03:32 -0500 Subject: [PATCH 062/120] Skip macos+vispy+jupyter Testing the Jupyter widgets with VisPy requires an OpenGL context. The smallest import that accomplishes this is GLFW, which has problems on macos --- .github/workflows/ci.yml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 0025a15a..fc278d44 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -47,6 +47,10 @@ jobs: # glfw.GLFWError: (65545) b'NSGL: Failed to find a suitable pixel format' - os: macos-latest canvas: glfw + # Also susceptible to the above bug, since under the hood GLFW gives vispy the OpenGL context. + - os: macos-latest + canvas: jupyter + gfx: vispy # wxpython does not build wheels for ubuntu or macos-latest py3.10 - os: ubuntu-latest canvas: wx From 311239915a0107974e2e2260ffc130d783ceb826 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 3 Sep 2025 16:28:49 -0500 Subject: [PATCH 063/120] Revert Jupyter dependency group Actually just need GLFW to run Jupyter+VisPy :( --- .github/workflows/ci.yml | 2 +- pyproject.toml | 5 ++++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index fc278d44..95904c2d 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -83,7 +83,7 @@ jobs: sudo apt install -y libegl1-mesa-dev libgl1-mesa-dri libxcb-xfixes0-dev mesa-vulkan-drivers - name: Install dependencies - run: uv sync --no-dev --group test --extra ${{ matrix.gfx }} --extra ${{matrix.canvas}} ${{ matrix.python-version != '3.10' && '--extra imgui' || '' }} ${{ matrix.canvas == 'pyqt' && '--group testqt' || '' }} ${{ matrix.canvas == 'jupyter' && '--group testjupyter' || '' }} + run: uv sync --no-dev --group test --extra ${{ matrix.gfx }} --extra ${{matrix.canvas}} ${{ matrix.python-version != '3.10' && '--extra imgui' || '' }} ${{ matrix.canvas == 'pyqt' && '--group testqt' || '' }} - name: Test shell: bash diff --git a/pyproject.toml b/pyproject.toml index 732584e8..4f21baff 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -42,7 +42,10 @@ jupyter = [ "ipywidgets >=8.0.5", "jupyter >=1.1", "jupyter_rfb >=0.3.3", - "simplejpeg", # Otherwise jupyter_rfb will use PNG, which is apparently slower + # Note that this dep is only needed for Vispy, something like simplejpeg would work fine if just pygfx. + "glfw", + # Otherwise jupyter_rfb will use PNG, which is apparently slower + "simplejpeg", ] pyqt = [ "pyqt6 >=6.4,!=6.6", From d4eb5755168c246eb69137b62dd363b3d3429d65 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 3 Sep 2025 16:45:47 -0500 Subject: [PATCH 064/120] Prevent multiple view copies in vispy canvas --- src/scenex/adaptors/_vispy/_canvas.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index 0c8799ae..7e048c31 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -60,6 +60,8 @@ def _draw(self) -> None: self._canvas.update() def _snx_add_view(self, view: model.View) -> None: + if view in self._views: + return self._views.append(view) # FIXME: Allow customization x = 0.0 From aa7ae68b623879c830b8079e05c2f3cac1aadb87 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 10:07:58 -0500 Subject: [PATCH 065/120] Move some stuff around Goal is better encapsulation of app-like behavior - we may want to extract this into a separate library later Also, as a part of this commit, the GLFW app backend was removed. Could always add it back later --- .github/workflows/ci.yml | 6 +- examples/basic_scene.py | 6 +- pyproject.toml | 7 +-- src/scenex/adaptors/_auto.py | 2 +- src/scenex/adaptors/_pygfx/_canvas.py | 6 +- src/scenex/adaptors/_vispy/_canvas.py | 2 +- src/scenex/app/__init__.py | 8 +++ src/scenex/{events => app}/_auto.py | 40 ++++--------- src/scenex/{events => app}/_glfw.py | 4 +- src/scenex/{events => app}/_jupyter.py | 4 +- src/scenex/{events => app}/_qt.py | 6 +- src/scenex/{events => app}/_wx.py | 4 +- src/scenex/app/events/__init__.py | 5 ++ .../events.py => app/events/_events.py} | 13 +++-- src/scenex/events/__init__.py | 6 -- src/scenex/model/_canvas.py | 2 +- src/scenex/model/_nodes/camera.py | 2 +- src/scenex/model/_nodes/image.py | 2 +- src/scenex/model/_nodes/node.py | 2 +- src/scenex/model/_nodes/points.py | 2 +- src/scenex/model/_nodes/volume.py | 2 +- src/scenex/util.py | 2 + src/scenex/{events => utils}/controllers.py | 2 +- tests/{events => app}/test_jupyter.py | 4 +- tests/{events => app}/test_qt.py | 14 ++--- tests/{events => app}/test_wx.py | 56 +++++++------------ tests/model/_nodes/test_canvas.py | 8 +-- tests/model/_nodes/test_image.py | 2 +- tests/test_canvas_to_world.py | 0 tests/test_zoom_to_fit.py | 26 --------- tests/{ => utils}/test_controllers.py | 27 +++++---- 31 files changed, 111 insertions(+), 161 deletions(-) create mode 100644 src/scenex/app/__init__.py rename src/scenex/{events => app}/_auto.py (80%) rename src/scenex/{events => app}/_glfw.py (97%) rename src/scenex/{events => app}/_jupyter.py (98%) rename src/scenex/{events => app}/_qt.py (96%) rename src/scenex/{events => app}/_wx.py (97%) create mode 100644 src/scenex/app/events/__init__.py rename src/scenex/{events/events.py => app/events/_events.py} (86%) delete mode 100644 src/scenex/events/__init__.py rename src/scenex/{events => utils}/controllers.py (99%) rename tests/{events => app}/test_jupyter.py (97%) rename tests/{events => app}/test_qt.py (93%) rename tests/{events => app}/test_wx.py (69%) delete mode 100644 tests/test_canvas_to_world.py delete mode 100644 tests/test_zoom_to_fit.py rename tests/{ => utils}/test_controllers.py (90%) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 95904c2d..48f491a4 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -42,12 +42,10 @@ jobs: os: [ubuntu-latest, macos-latest, windows-latest] python-version: ["3.10", "3.13"] gfx: [pygfx, vispy] - canvas: [pyqt, glfw, jupyter, wx] + canvas: [pyqt, jupyter, wx] exclude: # glfw.GLFWError: (65545) b'NSGL: Failed to find a suitable pixel format' - - os: macos-latest - canvas: glfw - # Also susceptible to the above bug, since under the hood GLFW gives vispy the OpenGL context. + # (Under the hood GLFW gives vispy the OpenGL context.) - os: macos-latest canvas: jupyter gfx: vispy diff --git a/examples/basic_scene.py b/examples/basic_scene.py index b2b3b410..4d30db27 100644 --- a/examples/basic_scene.py +++ b/examples/basic_scene.py @@ -2,7 +2,7 @@ import numpy as np import scenex as snx -from scenex.events.controllers import PanZoomController +from scenex.utils.controllers import PanZoomController try: from scenex.imgui import add_imgui_controls @@ -43,7 +43,9 @@ # snx.use("pygfx") # snx.use("vispy") -snx.show(view) +canvas = snx.show(view) +# canvas.render() + if add_imgui_controls is not None: add_imgui_controls(view) snx.run() diff --git a/pyproject.toml b/pyproject.toml index 4f21baff..f3e4d87c 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -35,9 +35,6 @@ classifiers = [ dependencies = ["cmap>=0.5", "numpy>=2", "psygnal>=0.11.1", "pydantic>=2.10", "pylinalg"] [project.optional-dependencies] -glfw= [ - "glfw" -] jupyter = [ "ipywidgets >=8.0.5", "jupyter >=1.1", @@ -82,7 +79,7 @@ docs = [ dev = [ { include-group = "test" }, { include-group = "docs" }, - "scenex[pygfx,vispy,imgui]", + "scenex[pygfx,vispy,imgui,wx,jupyter,pyqt]", "imageio[tifffile] >=2.20", "ipython", "mypy", @@ -148,7 +145,7 @@ disallow_subclassing_any = false show_error_codes = true pretty = true plugins = ["pydantic.mypy"] -untyped_calls_exclude = ["rendercanvas", "IPython"] +untyped_calls_exclude = ["rendercanvas", "IPython", "pytestqt"] [[tool.mypy.overrides]] module = ["rendercanvas.*"] diff --git a/src/scenex/adaptors/_auto.py b/src/scenex/adaptors/_auto.py index cb8c9be1..4ab4fe93 100644 --- a/src/scenex/adaptors/_auto.py +++ b/src/scenex/adaptors/_auto.py @@ -6,7 +6,7 @@ from contextlib import suppress from typing import TYPE_CHECKING, Any, Literal, TypeAlias, TypeGuard, cast, get_args -from scenex.events._auto import app +from scenex.app import app if TYPE_CHECKING: from collections.abc import Iterator diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index 50428b38..f274e4cc 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -3,7 +3,7 @@ from typing import TYPE_CHECKING, Any, TypeGuard, cast from scenex.adaptors._base import CanvasAdaptor -from scenex.events._auto import GuiFrontend, app, determine_app +from scenex.app import GuiFrontend, app, determine_app from ._adaptor_registry import get_adaptor @@ -42,10 +42,6 @@ def sizeHint(self) -> QSize: import rendercanvas.jupyter return rendercanvas.jupyter.JupyterRenderCanvas - if frontend == GuiFrontend.GLFW: - import rendercanvas.glfw - - return rendercanvas.glfw.GlfwRenderCanvas if frontend == GuiFrontend.WX: # ...still not working # import rendercanvas.wx diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index 7e048c31..bf08ea84 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -5,7 +5,7 @@ import numpy as np from scenex.adaptors._base import CanvasAdaptor -from scenex.events._auto import app +from scenex.app import app from ._adaptor_registry import get_adaptor diff --git a/src/scenex/app/__init__.py b/src/scenex/app/__init__.py new file mode 100644 index 00000000..fecfeb04 --- /dev/null +++ b/src/scenex/app/__init__.py @@ -0,0 +1,8 @@ +"""The Scenex App Abstraction.""" + +from ._auto import App, GuiFrontend, app, determine_app + +# Note that this package is designed to fully encapsulate app logic. +# It is designed to be cleanly extractable to a separate library if needed. + +__all__ = ["App", "GuiFrontend", "app", "determine_app"] diff --git a/src/scenex/events/_auto.py b/src/scenex/app/_auto.py similarity index 80% rename from src/scenex/events/_auto.py rename to src/scenex/app/_auto.py index d17d1965..00827321 100644 --- a/src/scenex/events/_auto.py +++ b/src/scenex/app/_auto.py @@ -11,17 +11,10 @@ from typing import Any from scenex.adaptors._base import CanvasAdaptor + from scenex.app.events._events import EventFilter from scenex.model import Canvas -class EventFilter: - def uninstall(self) -> None: - """Uninstall the event filter.""" - raise NotImplementedError("This method should be implemented by subclasses.") - - pass - - GUI_ENV_VAR = "SCENEX_WIDGET_BACKEND" """Preferred GUI frontend. If not set, the first available GUI frontend is used.""" _APP: App | None = None @@ -33,8 +26,6 @@ class GuiFrontend(str, Enum): Attributes ---------- - GLFW : str - [GLFW](https://www.glfw.org/) JUPYTER : str [JUPYTER](https://jupyter.org/) QT : str @@ -43,19 +34,17 @@ class GuiFrontend(str, Enum): [WX](https://wxpython.org/) """ - GLFW = "glfw" JUPYTER = "jupyter" QT = "qt" WX = "wx" GUI_PROVIDERS: dict[GuiFrontend, tuple[str, str]] = { - GuiFrontend.QT: ("scenex.events._qt", "QtAppWrap"), - GuiFrontend.WX: ("scenex.events._wx", "WxAppWrap"), + GuiFrontend.WX: ("scenex.app._wx", "WxAppWrap"), + GuiFrontend.QT: ("scenex.app._qt", "QtAppWrap"), # Note that Jupyter should go last because it is a guess based on IPython # which may be installed with the other frameworks as well. - GuiFrontend.JUPYTER: ("scenex.events._jupyter", "JupyterAppWrap"), - GuiFrontend.GLFW: ("scenex.events._glfw", "GlfwAppWrap"), + GuiFrontend.JUPYTER: ("scenex.app._jupyter", "JupyterAppWrap"), } @@ -100,21 +89,6 @@ def _running_apps() -> Iterator[GuiFrontend]: if shell.__class__.__name__ == "ZMQInteractiveShell": yield GuiFrontend.JUPYTER - # glfw provides no way to check if already running - this is a best guess. - if glfw := sys.modules.get("glfw"): - old, glfw.ERROR_REPORTING = glfw.ERROR_REPORTING, "exception" # type: ignore[attr-defined] - glfw_initialized = False - try: - glfw.get_monitors() - glfw_initialized = True - except glfw.GLFWError: - pass - - glfw.ERROR_REPORTING = old # type: ignore[attr-defined] - - if glfw_initialized: - yield GuiFrontend.GLFW - def _load_app(module: str, cls_name: str) -> App: mod = importlib.import_module(module) @@ -123,6 +97,12 @@ def _load_app(module: str, cls_name: str) -> App: def determine_app() -> GuiFrontend: + """Returns the [`GuiFrontend`][scenex.app.GuiFrontend]. + + This is determined first by the `NDV_GUI_FRONTEND` environment variable, after which + known GUI providers are tried in order until one is found that is either already + running, or available. + """ running = list(_running_apps()) # Try 1: Load a frontend explicitly requested by the user diff --git a/src/scenex/events/_glfw.py b/src/scenex/app/_glfw.py similarity index 97% rename from src/scenex/events/_glfw.py rename to src/scenex/app/_glfw.py index 616a8c2c..15d0fe86 100644 --- a/src/scenex/events/_glfw.py +++ b/src/scenex/app/_glfw.py @@ -4,8 +4,8 @@ import glfw -from scenex.events._auto import App, EventFilter -from scenex.events.events import MouseButton, MouseEvent, WheelEvent +from scenex.app._auto import App +from scenex.app.events._events import EventFilter, MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: from typing import Any diff --git a/src/scenex/events/_jupyter.py b/src/scenex/app/_jupyter.py similarity index 98% rename from src/scenex/events/_jupyter.py rename to src/scenex/app/_jupyter.py index e7443c30..a8b068a9 100644 --- a/src/scenex/events/_jupyter.py +++ b/src/scenex/app/_jupyter.py @@ -6,8 +6,8 @@ from IPython import display from jupyter_rfb import RemoteFrameBuffer -from scenex.events._auto import App, EventFilter -from scenex.events.events import MouseButton, MouseEvent, WheelEvent +from scenex.app._auto import App +from scenex.app.events._events import EventFilter, MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: from collections.abc import Callable diff --git a/src/scenex/events/_qt.py b/src/scenex/app/_qt.py similarity index 96% rename from src/scenex/events/_qt.py rename to src/scenex/app/_qt.py index 0dd39205..6bf98593 100644 --- a/src/scenex/events/_qt.py +++ b/src/scenex/app/_qt.py @@ -7,15 +7,15 @@ from qtpy.QtGui import QMouseEvent, QWheelEvent from qtpy.QtWidgets import QApplication, QWidget -from scenex.events._auto import App, EventFilter -from scenex.events.events import MouseButton, MouseEvent, WheelEvent +from scenex.app._auto import App +from scenex.app.events._events import EventFilter, MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: from typing import Any from scenex import Canvas from scenex.adaptors._base import CanvasAdaptor - from scenex.events import Event + from scenex.app.events import Event class QtEventFilter(QObject, EventFilter): diff --git a/src/scenex/events/_wx.py b/src/scenex/app/_wx.py similarity index 97% rename from src/scenex/events/_wx.py rename to src/scenex/app/_wx.py index 06458ae2..bb5ee9a0 100644 --- a/src/scenex/events/_wx.py +++ b/src/scenex/app/_wx.py @@ -4,8 +4,8 @@ import wx -from scenex.events._auto import App, EventFilter -from scenex.events.events import MouseButton, MouseEvent, WheelEvent +from scenex.app._auto import App +from scenex.app.events._events import EventFilter, MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: from scenex import Canvas diff --git a/src/scenex/app/events/__init__.py b/src/scenex/app/events/__init__.py new file mode 100644 index 00000000..4488f208 --- /dev/null +++ b/src/scenex/app/events/__init__.py @@ -0,0 +1,5 @@ +"""The Scenex Event Abstraction.""" + +from ._events import Event, EventFilter, MouseButton, MouseEvent, Ray, WheelEvent + +__all__ = ["Event", "EventFilter", "MouseButton", "MouseEvent", "Ray", "WheelEvent"] diff --git a/src/scenex/events/events.py b/src/scenex/app/events/_events.py similarity index 86% rename from src/scenex/events/events.py rename to src/scenex/app/events/_events.py index 2e19a17e..2e7eb8a8 100644 --- a/src/scenex/events/events.py +++ b/src/scenex/app/events/_events.py @@ -12,11 +12,6 @@ class Event: # TODO: Enum? type: str - def __eq__(self, value): - if not isinstance(value, Event): - return NotImplemented - return self.type == value.type - class MouseButton(IntFlag): """A general mouse interaction event.""" @@ -57,3 +52,11 @@ class WheelEvent(MouseEvent): """A mouse interaction event describing wheel movement.""" angle_delta: tuple[float, float] + + +class EventFilter: + def uninstall(self) -> None: + """Uninstall the event filter.""" + raise NotImplementedError("This method should be implemented by subclasses.") + + pass diff --git a/src/scenex/events/__init__.py b/src/scenex/events/__init__.py deleted file mode 100644 index 11dbd39a..00000000 --- a/src/scenex/events/__init__.py +++ /dev/null @@ -1,6 +0,0 @@ -"""The Scenex Event Abstraction.""" - -from ._auto import App, determine_app -from .events import Event, MouseButton, MouseEvent, Ray, WheelEvent - -__all__ = ["Event", "MouseButton", "MouseEvent", "Ray", "WheelEvent"] diff --git a/src/scenex/model/_canvas.py b/src/scenex/model/_canvas.py index 8a541932..07219083 100644 --- a/src/scenex/model/_canvas.py +++ b/src/scenex/model/_canvas.py @@ -8,7 +8,7 @@ from cmap import Color from pydantic import ConfigDict, Field -from scenex.events.events import Event, MouseEvent, Ray +from scenex.app.events._events import Event, MouseEvent, Ray from ._base import EventedBase from ._evented_list import EventedList diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index 91944d72..8449909f 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -15,7 +15,7 @@ if TYPE_CHECKING: from collections.abc import Callable - from scenex.events.events import Event, Ray + from scenex.app.events._events import Event, Ray from scenex.model._transform import Transform CameraType = Literal["panzoom", "perspective"] diff --git a/src/scenex/model/_nodes/image.py b/src/scenex/model/_nodes/image.py index c2d16c85..9a513de4 100644 --- a/src/scenex/model/_nodes/image.py +++ b/src/scenex/model/_nodes/image.py @@ -10,7 +10,7 @@ from .node import AABB, Node if TYPE_CHECKING: - from scenex.events.events import Ray + from scenex.app.events._events import Ray InterpolationMode = Literal["nearest", "linear", "bicubic"] diff --git a/src/scenex/model/_nodes/node.py b/src/scenex/model/_nodes/node.py index dac24660..ba04c7ff 100644 --- a/src/scenex/model/_nodes/node.py +++ b/src/scenex/model/_nodes/node.py @@ -27,7 +27,7 @@ import numpy.typing as npt from typing_extensions import Self, TypedDict, Unpack - from scenex.events import Event, Ray + from scenex.app.events import Event, Ray from .camera import Camera from .image import Image diff --git a/src/scenex/model/_nodes/points.py b/src/scenex/model/_nodes/points.py index 95b586c6..94efe5e0 100644 --- a/src/scenex/model/_nodes/points.py +++ b/src/scenex/model/_nodes/points.py @@ -10,7 +10,7 @@ from .node import AABB, Node if TYPE_CHECKING: - from scenex.events.events import Ray + from scenex.app.events._events import Ray SymbolName = Literal[ "disc", diff --git a/src/scenex/model/_nodes/volume.py b/src/scenex/model/_nodes/volume.py index 6c4da9b1..849423fa 100644 --- a/src/scenex/model/_nodes/volume.py +++ b/src/scenex/model/_nodes/volume.py @@ -8,7 +8,7 @@ from .node import AABB # noqa: TC001 if TYPE_CHECKING: - from scenex.events.events import Ray + from scenex.app.events._events import Ray RenderMode = Literal["iso", "mip"] diff --git a/src/scenex/util.py b/src/scenex/util.py index 7cfc3c6b..b33c4277 100644 --- a/src/scenex/util.py +++ b/src/scenex/util.py @@ -8,6 +8,7 @@ from typing import TYPE_CHECKING, Any, Protocol from scenex import model +from scenex.app import app from scenex.utils import projections if TYPE_CHECKING: @@ -124,6 +125,7 @@ def show( canvas.visible = True reg = get_adaptor_registry(backend=backend) reg.get_adaptor(canvas, create=True) + app().create_app() for view in canvas.views: projections.zoom_to_fit(view, zoom_factor=0.9) diff --git a/src/scenex/events/controllers.py b/src/scenex/utils/controllers.py similarity index 99% rename from src/scenex/events/controllers.py rename to src/scenex/utils/controllers.py index a3174369..a5259cd7 100644 --- a/src/scenex/events/controllers.py +++ b/src/scenex/utils/controllers.py @@ -5,7 +5,7 @@ import numpy as np import pylinalg as la -from scenex.events.events import Event, MouseButton, MouseEvent, Ray, WheelEvent +from scenex.app.events._events import Event, MouseButton, MouseEvent, Ray, WheelEvent from scenex.model import Camera, Node diff --git a/tests/events/test_jupyter.py b/tests/app/test_jupyter.py similarity index 97% rename from tests/events/test_jupyter.py rename to tests/app/test_jupyter.py index 2d548033..5c1bfdc2 100644 --- a/tests/events/test_jupyter.py +++ b/tests/app/test_jupyter.py @@ -8,8 +8,8 @@ import scenex as snx from scenex.adaptors._auto import determine_backend -from scenex.events._auto import GuiFrontend, determine_app -from scenex.events.events import MouseButton, MouseEvent, Ray, WheelEvent +from scenex.app import GuiFrontend, determine_app +from scenex.app.events import MouseButton, MouseEvent, Ray, WheelEvent from scenex.model._transform import Transform if determine_app() != GuiFrontend.JUPYTER: diff --git a/tests/events/test_qt.py b/tests/app/test_qt.py similarity index 93% rename from tests/events/test_qt.py rename to tests/app/test_qt.py index a8548c57..d8c9737f 100644 --- a/tests/events/test_qt.py +++ b/tests/app/test_qt.py @@ -8,8 +8,8 @@ import pytest import scenex as snx -from scenex.events._auto import GuiFrontend, determine_app -from scenex.events.events import MouseButton, MouseEvent, Ray +from scenex.app import GuiFrontend, determine_app +from scenex.app.events import MouseButton, MouseEvent, Ray from scenex.model._transform import Transform if determine_app() == GuiFrontend.QT: @@ -41,7 +41,7 @@ def _validate_ray(maybe_ray: Ray | None) -> Ray: return maybe_ray -def test_mouse_press(evented_canvas: snx.Canvas, qtbot: QtBot): +def test_mouse_press(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) @@ -72,7 +72,7 @@ def test_mouse_press(evented_canvas: snx.Canvas, qtbot: QtBot): ) -def test_mouse_release(evented_canvas: snx.Canvas, qtbot: QtBot): +def test_mouse_release(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) @@ -89,7 +89,7 @@ def test_mouse_release(evented_canvas: snx.Canvas, qtbot: QtBot): ) -def test_mouse_move(evented_canvas: snx.Canvas, qtbot: QtBot): +def test_mouse_move(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) @@ -110,7 +110,7 @@ def test_mouse_move(evented_canvas: snx.Canvas, qtbot: QtBot): ) -def test_mouse_click(evented_canvas: snx.Canvas, qtbot: QtBot): +def test_mouse_click(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) @@ -136,7 +136,7 @@ def test_mouse_click(evented_canvas: snx.Canvas, qtbot: QtBot): ) -def test_mouse_double_click(evented_canvas: snx.Canvas, qtbot: QtBot): +def test_mouse_double_click(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) diff --git a/tests/events/test_wx.py b/tests/app/test_wx.py similarity index 69% rename from tests/events/test_wx.py rename to tests/app/test_wx.py index b5a72be0..946e154d 100644 --- a/tests/events/test_wx.py +++ b/tests/app/test_wx.py @@ -8,9 +8,8 @@ import pytest import scenex as snx -from scenex.events._auto import GuiFrontend, app, determine_app -from scenex.events.events import MouseButton, MouseEvent, Ray, WheelEvent -from scenex.model._transform import Transform +from scenex.app import GuiFrontend, determine_app +from scenex.app.events import MouseButton, MouseEvent, Ray, WheelEvent if TYPE_CHECKING: from collections.abc import Iterator @@ -27,27 +26,14 @@ ) -@pytest.fixture(scope="session") -def wxapp() -> Iterator[wx.App]: - yield app().create_app() +@pytest.fixture +def evented_canvas(basic_view: snx.Scene) -> Iterator[snx.Canvas]: + canvas = snx.show(basic_view) + canvas.render() + yield canvas -@pytest.fixture -def evented_canvas() -> snx.Canvas: - camera = snx.Camera(transform=Transform(), interactive=True) - scene = snx.Scene(children=[]) - canvas = snx.Canvas() - view = snx.View(scene=scene, camera=camera) - # FIXME: The canvas should take care of setting this. - view.canvas = canvas - canvas.views.append(view) - canvas._get_adaptors(create=True)[0]._snx_get_native() - return canvas - - -def _processEvent( - wxapp: wx.App, evt: wx.PyEventBinder, wdg: wx.Control, **kwargs: Any -) -> None: +def _processEvent(evt: wx.PyEventBinder, wdg: wx.Control, **kwargs: Any) -> None: """Simulates a wx event. Note that wx.UIActionSimulator is an alternative to this approach. @@ -68,7 +54,7 @@ def _processEvent( # https://github.com/wxWidgets/Phoenix/blob/master/unittests/wtc.py#L41 wdg.Show(True) wx.MilliSleep(50) - evtLoop = wxapp.GetTraits().CreateEventLoop() + evtLoop = wx.App.Get().GetTraits().CreateEventLoop() wx.EventLoopActivator(evtLoop) evtLoop.YieldFor(wx.EVT_CATEGORY_ALL) # pyright: ignore[reportAttributeAccessIssue] @@ -78,7 +64,7 @@ def _validate_ray(maybe_ray: Ray | None) -> Ray: return maybe_ray -def test_mouse_press(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: +def test_mouse_press(evented_canvas: snx.Canvas) -> None: native = cast( "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] )._snx_get_window_ref() @@ -86,7 +72,7 @@ def test_mouse_press(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) # Press the left button - _processEvent(wxapp, wx.EVT_LEFT_DOWN, native, pos=wx.Point(*press_point)) + _processEvent(wx.EVT_LEFT_DOWN, native, pos=wx.Point(*press_point)) mock.assert_called_once_with( MouseEvent( "press", @@ -99,7 +85,7 @@ def test_mouse_press(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: mock.reset_mock() # Now press the right button - _processEvent(wxapp, wx.EVT_RIGHT_DOWN, native, pos=wx.Point(*press_point)) + _processEvent(wx.EVT_RIGHT_DOWN, native, pos=wx.Point(*press_point)) mock.assert_called_once_with( MouseEvent( "press", @@ -111,14 +97,14 @@ def test_mouse_press(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: ) -def test_mouse_release(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: +def test_mouse_release(evented_canvas: snx.Canvas) -> None: native = cast( "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] )._snx_get_window_ref() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) - _processEvent(wxapp, wx.EVT_LEFT_UP, native, pos=wx.Point(*press_point)) + _processEvent(wx.EVT_LEFT_UP, native, pos=wx.Point(*press_point)) mock.assert_called_once_with( MouseEvent( "release", @@ -130,7 +116,7 @@ def test_mouse_release(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: ) -def test_mouse_move(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: +def test_mouse_move(evented_canvas: snx.Canvas) -> None: native = cast( "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] )._snx_get_window_ref() @@ -138,10 +124,10 @@ def test_mouse_move(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) # FIXME: For some reason the mouse press is necessary for processing events? - _processEvent(wxapp, wx.EVT_LEFT_DOWN, native, pos=wx.Point(*press_point)) - _processEvent(wxapp, wx.EVT_RIGHT_DOWN, native, pos=wx.Point(*press_point)) + _processEvent(wx.EVT_LEFT_DOWN, native, pos=wx.Point(*press_point)) + _processEvent(wx.EVT_RIGHT_DOWN, native, pos=wx.Point(*press_point)) mock.reset_mock() - _processEvent(wxapp, wx.EVT_MOTION, native, pos=wx.Point(*press_point)) + _processEvent(wx.EVT_MOTION, native, pos=wx.Point(*press_point)) mock.assert_called_once_with( MouseEvent( "move", @@ -153,16 +139,14 @@ def test_mouse_move(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: ) -def test_mouse_wheel(wxapp: wx.App, evented_canvas: snx.Canvas) -> None: +def test_mouse_wheel(evented_canvas: snx.Canvas) -> None: native = cast( "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] )._snx_get_window_ref() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) - _processEvent( - wxapp, wx.EVT_MOUSEWHEEL, native, pos=wx.Point(*press_point), rot=(0, 120) - ) + _processEvent(wx.EVT_MOUSEWHEEL, native, pos=wx.Point(*press_point), rot=(0, 120)) mock.assert_called_once_with( WheelEvent( "wheel", diff --git a/tests/model/_nodes/test_canvas.py b/tests/model/_nodes/test_canvas.py index 333d3960..d62ec9b9 100644 --- a/tests/model/_nodes/test_canvas.py +++ b/tests/model/_nodes/test_canvas.py @@ -1,11 +1,11 @@ import numpy as np import scenex as snx -from scenex.events.events import Ray +from scenex.app.events import Ray from scenex.utils import projections -def test_to_world(): +def test_to_world() -> None: """Tests Canvas.to_world""" # Identity projection, identity transformation camera = snx.Camera( @@ -33,7 +33,7 @@ def test_to_world(): assert ray is None -def test_to_world_translated(): +def test_to_world_translated() -> None: """Tests Canvas.to_world with a translated camera""" # Identity projection, small transformation camera = snx.Camera( @@ -59,7 +59,7 @@ def test_to_world_translated(): camera.transform = snx.Transform() -def test_to_world_projection(): +def test_to_world_projection() -> None: """Tests Canvas.to_world with a non-identity camera projection""" # Narrowed projection, identity transformation camera = snx.Camera( diff --git a/tests/model/_nodes/test_image.py b/tests/model/_nodes/test_image.py index 4956338f..8dd068ee 100644 --- a/tests/model/_nodes/test_image.py +++ b/tests/model/_nodes/test_image.py @@ -3,7 +3,7 @@ import pytest import scenex as snx -from scenex.events.events import Ray +from scenex.app.events import Ray from scenex.model._nodes.image import Image diff --git a/tests/test_canvas_to_world.py b/tests/test_canvas_to_world.py deleted file mode 100644 index e69de29b..00000000 diff --git a/tests/test_zoom_to_fit.py b/tests/test_zoom_to_fit.py deleted file mode 100644 index 81574561..00000000 --- a/tests/test_zoom_to_fit.py +++ /dev/null @@ -1,26 +0,0 @@ -import numpy as np - -import scenex as snx - - -def test_zoom_to_fit_image() -> None: - view = snx.View( - blending="default", - scene=snx.Scene( - children=[ - snx.Image( - data=np.random.randint(0, 255, (100, 100)).astype(np.uint8), - ), - ], - ), - ) - snx.show(view) - - tform = view.camera.transform - assert tform == snx.Transform().translated((49.5, 49.5, 0)) - - proj = view.camera.projection - # FIXME: Is the z coordinate important? - # FIXME: Remove atol - # FIXME: Test entire matrix - assert np.allclose(np.diag(proj)[:2], np.asarray([0.018, 0.018]), atol=1e-3) diff --git a/tests/test_controllers.py b/tests/utils/test_controllers.py similarity index 90% rename from tests/test_controllers.py rename to tests/utils/test_controllers.py index 984e06ec..1fd0f872 100644 --- a/tests/test_controllers.py +++ b/tests/utils/test_controllers.py @@ -6,12 +6,17 @@ import pylinalg as la import scenex as snx -from scenex.events.controllers import OrbitController, PanZoomController -from scenex.events.events import MouseButton, MouseEvent, Ray, WheelEvent +from scenex.app.events import MouseButton, MouseEvent, Ray, WheelEvent from scenex.model._transform import Transform +from scenex.utils.controllers import OrbitController, PanZoomController -def test_panzoomcontroller_pan(): +def _validate_ray(maybe_ray: Ray | None) -> Ray: + assert maybe_ray is not None + return maybe_ray + + +def test_panzoomcontroller_pan() -> None: """Tests panning behavior of the PanZoomController.""" controller = PanZoomController() cam = snx.Camera(interactive=True, controller=controller) @@ -36,7 +41,7 @@ def test_panzoomcontroller_pan(): np.testing.assert_allclose(cam.transform.root, expected.root) -def test_panzoomcontroller_zoom(): +def test_panzoomcontroller_zoom() -> None: """Tests zooming behavior of the PanZoomController.""" controller = PanZoomController() cam = snx.Camera(interactive=True) @@ -57,7 +62,7 @@ def test_panzoomcontroller_zoom(): np.testing.assert_allclose(cam.projection.root, expected.root) -def test_orbitcontroller_orbit(): +def test_orbitcontroller_orbit() -> None: """Tests orbiting behavior of the OrbitController.""" # Camera is along the x axis, looking in the negative x direction at the center controller = OrbitController(center=(0, 0, 0)) @@ -80,7 +85,7 @@ def test_orbitcontroller_orbit(): press_event = MouseEvent( type="press", canvas_pos=click_pos, - world_ray=canvas.to_world(click_pos), + world_ray=_validate_ray(canvas.to_world(click_pos)), buttons=MouseButton.LEFT, ) controller(press_event, cam) @@ -89,7 +94,7 @@ def test_orbitcontroller_orbit(): move_event = MouseEvent( type="move", canvas_pos=move_pos, - world_ray=canvas.to_world(move_pos), + world_ray=_validate_ray(canvas.to_world(move_pos)), buttons=MouseButton.LEFT, ) controller(move_event, cam) @@ -97,7 +102,7 @@ def test_orbitcontroller_orbit(): move_event = MouseEvent( type="move", canvas_pos=move_pos, - world_ray=canvas.to_world(move_pos), + world_ray=_validate_ray(canvas.to_world(move_pos)), buttons=MouseButton.LEFT, ) controller(move_event, cam) @@ -115,7 +120,7 @@ def test_orbitcontroller_orbit(): np.testing.assert_allclose(pos_after_exp, pos_after_act) -def test_orbitcontroller_zoom(): +def test_orbitcontroller_zoom() -> None: center = (0.0, 0.0, 0.0) cam = snx.Camera(interactive=True, transform=Transform().translated((0, 0, 10))) controller = OrbitController(center) @@ -150,7 +155,7 @@ def test_orbitcontroller_zoom(): np.testing.assert_allclose(cam.transform, tform_before) -def test_orbitcontroller_pan(): +def test_orbitcontroller_pan() -> None: # Camera is along the x axis, looking in the negative x direction at the center controller = OrbitController(center=(0, 0, 0)) cam = snx.Camera(interactive=True, controller=controller) @@ -171,6 +176,7 @@ def test_orbitcontroller_pan(): # Simulate right mouse press click_pos = (view.layout.width / 2, view.layout.height / 2) world_ray_before = canvas.to_world(click_pos) + assert world_ray_before is not None press_event = MouseEvent( type="press", canvas_pos=click_pos, @@ -181,6 +187,7 @@ def test_orbitcontroller_pan(): # Simulate right mouse move (pan) click_pos = (click_pos[0], click_pos[1] + view.layout.height // 2) world_ray_after = canvas.to_world(click_pos) + assert world_ray_after is not None move_event = MouseEvent( type="move", canvas_pos=click_pos, From eed9bfcedf9c134c184636f15f099da6abff19c4 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 10:42:44 -0500 Subject: [PATCH 066/120] tidy up examples --- examples/basic_scene.py | 3 +-- examples/basic_volume.py | 9 +++------ 2 files changed, 4 insertions(+), 8 deletions(-) diff --git a/examples/basic_scene.py b/examples/basic_scene.py index 4d30db27..03dca35e 100644 --- a/examples/basic_scene.py +++ b/examples/basic_scene.py @@ -43,8 +43,7 @@ # snx.use("pygfx") # snx.use("vispy") -canvas = snx.show(view) -# canvas.render() +snx.show(view) if add_imgui_controls is not None: add_imgui_controls(view) diff --git a/examples/basic_volume.py b/examples/basic_volume.py index 36bc3ddf..d16a7bb5 100644 --- a/examples/basic_volume.py +++ b/examples/basic_volume.py @@ -1,9 +1,9 @@ import numpy as np import scenex as snx -from scenex.events.controllers import OrbitController from scenex.model._transform import Transform from scenex.utils import projections +from scenex.utils.controllers import OrbitController try: from imageio.v2 import volread @@ -23,19 +23,16 @@ ) ] ), - camera=snx.Camera( - interactive=True, - ), + camera=snx.Camera(interactive=True), ) snx.use("vispy") -canvas = snx.show(view) +snx.show(view) # Orbit around the center of the volume orbit_center = np.mean(np.asarray(view.scene.bounding_box), axis=0) # Place the camera along the x axis, looking at the orbit center -# TODO: Need a look at method view.camera.transform = Transform().translated(orbit_center).translated((300, 0, 0)) view.camera.look_at(orbit_center, up=(0, 0, 1)) # Perspective projection for 3D From edcab79764e6d62ed6a614796e1a1317731bdae9 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 11:25:44 -0500 Subject: [PATCH 067/120] Clean up Jupyter example --- examples/camera_projection.py | 48 ----------------------------------- examples/notebook.ipynb | 26 +++++++++---------- src/scenex/app/_jupyter.py | 5 ++-- tests/app/test_jupyter.py | 4 +-- 4 files changed, 17 insertions(+), 66 deletions(-) delete mode 100644 examples/camera_projection.py diff --git a/examples/camera_projection.py b/examples/camera_projection.py deleted file mode 100644 index bfcca645..00000000 --- a/examples/camera_projection.py +++ /dev/null @@ -1,48 +0,0 @@ -from math import atan, pi - -import numpy as np - -import scenex as snx -from scenex.model._transform import Transform -from scenex.utils import projections - -try: - from imageio.v2 import volread - - url = "https://gitlab.com/scikit-image/data/-/raw/2cdc5ce89b334d28f06a58c9f0ca21aa6992a5ba/cells3d.tif" - data = np.asarray(volread(url)).astype(np.uint16)[:, 0, :, :] -except ImportError: - data = np.random.randint(0, 2, (3, 3, 3)).astype(np.uint16) - -view = snx.View( - blending="default", - scene=snx.Scene( - children=[ - snx.Volume( - data=data, - clims=(data.min(), data.max()), - ), - ] - ), -) - -canvas = snx.show(view) - -# Translate the camera to the center of the volume, and distance the camera from the -# volume in the z dimension (important for perspective transforms) -view.camera.transform = Transform().translated((127.5, 127.5, 300)) - -# view.camera.projection = projections.orthographic( -# 1.1 * data.shape[1], -# 1.1 * data.shape[2], -# 1000, -# ) - -view.camera.projection = projections.perspective( - # TODO: Create a helper function for this. - fov=2 * atan(data.shape[1] / 2 / 300) * 180 / pi, - near=300, - far=1_000_000, # Just need something big -) - -snx.run() diff --git a/examples/notebook.ipynb b/examples/notebook.ipynb index bda97c15..773d03cb 100644 --- a/examples/notebook.ipynb +++ b/examples/notebook.ipynb @@ -26,19 +26,10 @@ "id": "461399b0-e02d-43d9-9ede-c1aa6c180338", "metadata": {}, "outputs": [ - { - "data": { - "text/plain": [ - "'Using RemoteFrameBuffer widget'" - ] - }, - "metadata": {}, - "output_type": "display_data" - }, { "data": { "application/vnd.jupyter.widget-view+json": { - "model_id": "967db5e8238049ae94a786da7c792dc6", + "model_id": "1db93420dd844ff0b73ef66d9d114f1d", "version_major": 2, "version_minor": 0 }, @@ -52,12 +43,12 @@ { "data": { "application/vnd.jupyter.widget-view+json": { - "model_id": "f90a17e1854d498ca3c2f8daa7aa34b9", + "model_id": "f76cec7a2a2b42b180d72183bf7dd84a", "version_major": 2, "version_minor": 0 }, "text/html": [ - "
snapshot
" + "
snapshot
" ], "text/plain": [ "JupyterRenderCanvas(css_height='500.0px', css_width='500.0px')" @@ -69,6 +60,7 @@ ], "source": [ "import scenex as snx\n", + "from scenex.utils.controllers import PanZoomController\n", "import numpy as np\n", "import cmap\n", "\n", @@ -78,7 +70,6 @@ " transform=snx.Transform().scaled((1.3, 0.5)).translated((-40, 20)),\n", " clims=(0, 255),\n", " opacity=0.7,\n", - " interactive=True,\n", ")\n", "points = snx.Points(\n", " coords=np.random.randint(0, 200, (100, 2)).astype(np.uint8),\n", @@ -94,6 +85,7 @@ " scene=snx.Scene(\n", " children=[image, points]\n", " ),\n", + " camera=snx.Camera(controller=PanZoomController(), interactive=True),\n", ")\n", "\n", "canvas = snx.show(view)\n", @@ -120,6 +112,14 @@ "\n", "view.scene.children[1].set_event_filter(foo)" ] + }, + { + "cell_type": "code", + "execution_count": null, + "id": "54bdd9e2-f229-4afb-85d1-f84462270a39", + "metadata": {}, + "outputs": [], + "source": [] } ], "metadata": { diff --git a/src/scenex/app/_jupyter.py b/src/scenex/app/_jupyter.py index a8b068a9..422610b8 100644 --- a/src/scenex/app/_jupyter.py +++ b/src/scenex/app/_jupyter.py @@ -94,8 +94,6 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: ) elif etype == "wheel": canvas_pos = (ev["x"], ev["y"]) - btn = JupyterEventFilter.mouse_btn(ev["button"]) - filter._active_button |= btn if world_ray := filter._model_canvas.to_world(canvas_pos): filter._model_canvas.handle( WheelEvent( @@ -103,7 +101,8 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: canvas_pos=canvas_pos, world_ray=world_ray, buttons=filter._active_button, - angle_delta=(ev["delta_x"], ev["delta_y"]), + # Note that Jupyter_rfb uses a different y convention + angle_delta=(ev["dx"], -ev["dy"]), ) ) diff --git a/tests/app/test_jupyter.py b/tests/app/test_jupyter.py index 5c1bfdc2..da6cf75f 100644 --- a/tests/app/test_jupyter.py +++ b/tests/app/test_jupyter.py @@ -197,8 +197,8 @@ def test_wheel(evented_canvas: snx.Canvas) -> None: "event_type": "wheel", "x": press_point[0], "y": press_point[1], - "delta_x": 0, - "delta_y": 120, + "dx": 0, + "dy": -120, # Note that Jupyter_rfb uses a different y convention "button": LEFT_MOUSE, } ) From 669db93d72134db25d8cc7c3782351a03f355152 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 11:35:51 -0500 Subject: [PATCH 068/120] Relax numpy version --- pyproject.toml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/pyproject.toml b/pyproject.toml index f3e4d87c..37a0a00d 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -32,7 +32,7 @@ classifiers = [ "Programming Language :: Python :: 3.13", "Typing :: Typed", ] -dependencies = ["cmap>=0.5", "numpy>=2", "psygnal>=0.11.1", "pydantic>=2.10", "pylinalg"] +dependencies = ["cmap>=0.5", "numpy>=1.24", "psygnal>=0.11.1", "pydantic>=2.10", "pylinalg"] [project.optional-dependencies] jupyter = [ From 33abbb22d6f861645e601398436271fe404fd765 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 11:36:39 -0500 Subject: [PATCH 069/120] Jupyter: No mouse button on wheel events --- tests/app/test_jupyter.py | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/tests/app/test_jupyter.py b/tests/app/test_jupyter.py index da6cf75f..357b2eb8 100644 --- a/tests/app/test_jupyter.py +++ b/tests/app/test_jupyter.py @@ -199,7 +199,6 @@ def test_wheel(evented_canvas: snx.Canvas) -> None: "y": press_point[1], "dx": 0, "dy": -120, # Note that Jupyter_rfb uses a different y convention - "button": LEFT_MOUSE, } ) mock.assert_called_once_with( @@ -207,7 +206,7 @@ def test_wheel(evented_canvas: snx.Canvas) -> None: "wheel", press_point, _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MouseButton.NONE, angle_delta=(0, 120), ), evented_canvas.views[0].camera, From 7d5b87fe86d98c732e993d92eea269536525c103 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 11:44:14 -0500 Subject: [PATCH 070/120] Remove testjupyter group --- pyproject.toml | 4 ---- 1 file changed, 4 deletions(-) diff --git a/pyproject.toml b/pyproject.toml index 37a0a00d..3d299e7e 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -63,10 +63,6 @@ imgui = [ [dependency-groups] test = ["pytest>=8", "pytest-cov>=6"] testqt = [{ include-group = "test" }, "pytest-qt >=4.4"] -testjupyter = [ - { include-group = "test" }, - "glfw", # Vispy in particular needs SOME backend to get an OpenGL context -] docs = [ "mike>=2.1.3", "mkdocs>=1.6.1", From 2d861430fb309ead6862b5e20c170f63a64b1cb6 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 13:56:46 -0500 Subject: [PATCH 071/120] Repurpose _snx_get_native for native widget All NodeAdaptors had a _snx_get_native method that was used to return the native pygfx/vispy object, however there wasn't really a (production) use case for this. There is, however, a production use case for using that same method on the CanvasAdaptors to get the native GUI widget. This commit massages the existing (non-production) uses of _snx_get_native to use other means, and repurposes that name for just the canvases --- examples/event_filters.py | 2 +- src/scenex/adaptors/_base.py | 6 +----- src/scenex/adaptors/_pygfx/_canvas.py | 15 +++++---------- src/scenex/adaptors/_pygfx/_node.py | 7 ++----- src/scenex/adaptors/_vispy/_canvas.py | 10 ++++------ src/scenex/adaptors/_vispy/_node.py | 5 +---- src/scenex/app/_glfw.py | 4 ++-- src/scenex/app/_jupyter.py | 2 +- src/scenex/app/_qt.py | 2 +- src/scenex/app/_wx.py | 2 +- src/scenex/imgui/_controls.py | 5 +++-- src/scenex/model/_base.py | 5 ----- tests/app/test_wx.py | 8 ++++---- tests/test_basic_scene.py | 21 +++++++++++++++++---- 14 files changed, 43 insertions(+), 51 deletions(-) diff --git a/examples/event_filters.py b/examples/event_filters.py index 791f2abf..d66e2898 100644 --- a/examples/event_filters.py +++ b/examples/event_filters.py @@ -2,7 +2,7 @@ import numpy as np import scenex as snx -from scenex.events import Event, MouseEvent +from scenex.app.events import Event, MouseEvent img = snx.Image( data=np.zeros((200, 200)).astype(np.uint8), diff --git a/src/scenex/adaptors/_base.py b/src/scenex/adaptors/_base.py index 3b7b678c..3fe6437e 100644 --- a/src/scenex/adaptors/_base.py +++ b/src/scenex/adaptors/_base.py @@ -41,10 +41,6 @@ class Adaptor(ABC, Generic[TModel, TNative]): def __init__(self, obj: TModel) -> None: """All backend adaptor objects receive the object they are adapting.""" - @abstractmethod - def _snx_get_native(self) -> TNative: - """Return the native object for the .""" - def handle_event(self, info: EmissionInfo) -> None: """Receive info from psygnal callback and convert to adaptor call.""" signal_name = info.signal.name @@ -174,7 +170,7 @@ def _snx_set_height(self, arg: int, /) -> None: ... @abstractmethod def _snx_set_background_color(self, arg: model.Color | None, /) -> None: ... @abstractmethod - def _snx_get_window_ref(self) -> Any: + def _snx_get_native(self) -> Any: """Returns an object understood by the backend widget toolkit.""" @abstractmethod diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index f274e4cc..89325280 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -44,12 +44,10 @@ def sizeHint(self) -> QSize: return rendercanvas.jupyter.JupyterRenderCanvas if frontend == GuiFrontend.WX: # ...still not working - # import rendercanvas.wx - # rendercanvas.wx.loop._rc_init() - # return rendercanvas.wx.WxRenderWidget - from wgpu.gui.wx import WxWgpuCanvas + import rendercanvas.wx - return WxWgpuCanvas # type: ignore + rendercanvas.wx.loop._rc_init() + return rendercanvas.wx.WxRenderCanvas raise ValueError("No suitable render canvas found") @@ -68,12 +66,9 @@ def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: self._views: list[model.View] = [] for view in canvas.views: self._snx_add_view(view) - self._filter = app().install_event_filter(self._snx_get_window_ref(), canvas) + self._filter = app().install_event_filter(self._snx_get_native(), canvas) - def _snx_get_native(self) -> BaseRenderCanvas: - return self._wgpu_canvas - - def _snx_get_window_ref(self) -> Any: + def _snx_get_native(self) -> Any: if subwdg := getattr(self._wgpu_canvas, "_subwidget", None): # wx backend has a _subwidget attribute that is the actual widget return subwdg diff --git a/src/scenex/adaptors/_pygfx/_node.py b/src/scenex/adaptors/_pygfx/_node.py index 970ef297..36eac47c 100644 --- a/src/scenex/adaptors/_pygfx/_node.py +++ b/src/scenex/adaptors/_pygfx/_node.py @@ -1,7 +1,7 @@ from __future__ import annotations import logging -from typing import TYPE_CHECKING, Any, Generic, TypeVar, cast +from typing import TYPE_CHECKING, Generic, TypeVar, cast from scenex.adaptors._base import NodeAdaptor, TNode @@ -27,9 +27,6 @@ class Node(NodeAdaptor[TNode, TObj], Generic[TNode, TObj, TMat, TGeo]): _geometry: TGeo _name: str - def _snx_get_native(self) -> Any: - return self._pygfx_node - def _snx_set_name(self, arg: str) -> None: # not sure pygfx has a name attribute... # TODO: for that matter... do we need a name attribute? @@ -66,7 +63,7 @@ def _snx_set_transform(self, arg: Transform) -> None: def _snx_add_node(self, node: model.Node) -> None: # create if it doesn't exist adaptor = cast("Node", get_adaptor(node)) - self._pygfx_node.add(adaptor._snx_get_native()) + self._pygfx_node.add(adaptor._pygfx_node) def _snx_force_update(self) -> None: pass diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index bf08ea84..126b5d18 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -14,7 +14,8 @@ from rendercanvas.base import BaseRenderCanvas from scenex import model - from scenex.model._view import View + + from ._view import View class SupportsHideShow(BaseRenderCanvas): def show(self) -> None: ... @@ -38,7 +39,7 @@ def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: if supports_hide_show(self._canvas.native): self._canvas.native.hide() self._grid = cast("Grid", self._canvas.central_widget.add_grid()) - self._views: list[View] = [] + self._views: list[model.View] = [] for view in canvas.views: self._snx_add_view(view) self._filter = app().install_event_filter(self._canvas.native, canvas) @@ -49,9 +50,6 @@ def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: def _snx_get_native(self) -> Any: return self._canvas.native - def _snx_get_window_ref(self) -> Any: - return self._canvas.native - def _snx_set_visible(self, arg: bool) -> None: # show the qt canvas we patched earlier in __init__ app().show(self, arg) @@ -74,7 +72,7 @@ def _snx_add_view(self, view: model.View) -> None: view.layout.height = self._canvas.size[1] x += dx - self._grid.add_widget(get_adaptor(view)._snx_get_native()) + self._grid.add_widget(cast("View", get_adaptor(view))._vispy_viewbox) get_adaptor(view.camera)._set_view(view.layout.width, view.layout.height) # type:ignore # adaptor = get_adaptor(view) # self._grid.add_widget(adaptor._snx_get_native()) diff --git a/src/scenex/adaptors/_vispy/_node.py b/src/scenex/adaptors/_vispy/_node.py index 2ac88656..b12000e5 100644 --- a/src/scenex/adaptors/_vispy/_node.py +++ b/src/scenex/adaptors/_vispy/_node.py @@ -22,9 +22,6 @@ class Node(NodeAdaptor[TNode, TObj], Generic[TNode, TObj]): _vispy_node: TObj - def _snx_get_native(self) -> Any: - return self._vispy_node - def _snx_set_name(self, arg: str) -> None: self._vispy_node.name = arg @@ -62,7 +59,7 @@ def _snx_set_transform(self, arg: Transform) -> None: def _snx_add_node(self, node: model.Node) -> None: # create if it doesn't exist adaptor = cast("Node", get_adaptor(node)) - adaptor._snx_get_native().parent = self._vispy_node + adaptor._vispy_node.parent = self._vispy_node def _snx_force_update(self) -> None: pass diff --git a/src/scenex/app/_glfw.py b/src/scenex/app/_glfw.py index 15d0fe86..a4e16ff1 100644 --- a/src/scenex/app/_glfw.py +++ b/src/scenex/app/_glfw.py @@ -140,6 +140,6 @@ def install_event_filter(self, canvas: Any, model_canvas: Canvas) -> EventFilter def show(self, canvas: CanvasAdaptor, visible: bool) -> None: if visible: - glfw.show_window(canvas._snx_get_window_ref()) + glfw.show_window(canvas._snx_get_native()) else: - glfw.hide_window(canvas._snx_get_window_ref()) + glfw.hide_window(canvas._snx_get_native()) diff --git a/src/scenex/app/_jupyter.py b/src/scenex/app/_jupyter.py index 422610b8..49ddc868 100644 --- a/src/scenex/app/_jupyter.py +++ b/src/scenex/app/_jupyter.py @@ -161,7 +161,7 @@ def install_event_filter(self, canvas: Any, model_canvas: Canvas) -> EventFilter return JupyterEventFilter(canvas, model_canvas) def show(self, canvas: CanvasAdaptor, visible: bool) -> None: - native_canvas = cast("RemoteFrameBuffer", canvas._snx_get_window_ref()) + native_canvas = cast("RemoteFrameBuffer", canvas._snx_get_native()) if canvas not in self._visible_canvases: self._visible_canvases.add(canvas) display.display(native_canvas) diff --git a/src/scenex/app/_qt.py b/src/scenex/app/_qt.py index 6bf98593..ab385c8f 100644 --- a/src/scenex/app/_qt.py +++ b/src/scenex/app/_qt.py @@ -141,4 +141,4 @@ def install_event_filter(self, canvas: Any, model_canvas: Canvas) -> EventFilter return f def show(self, canvas: CanvasAdaptor, visible: bool) -> None: - cast("QWidget", canvas._snx_get_window_ref()).setVisible(visible) + cast("QWidget", canvas._snx_get_native()).setVisible(visible) diff --git a/src/scenex/app/_wx.py b/src/scenex/app/_wx.py index bb5ee9a0..f079b6a6 100644 --- a/src/scenex/app/_wx.py +++ b/src/scenex/app/_wx.py @@ -140,5 +140,5 @@ def install_event_filter( return WxEventFilter(canvas, model_canvas) def show(self, canvas: CanvasAdaptor, visible: bool) -> None: - window = canvas._snx_get_window_ref() + window = canvas._snx_get_native() wx.CallAfter(window.Show, visible) diff --git a/src/scenex/imgui/_controls.py b/src/scenex/imgui/_controls.py index 46d0c066..c05b72ed 100644 --- a/src/scenex/imgui/_controls.py +++ b/src/scenex/imgui/_controls.py @@ -12,7 +12,7 @@ ) from e import logging import types -from typing import TYPE_CHECKING, Any, Literal, get_args, get_origin +from typing import TYPE_CHECKING, Any, Literal, cast, get_args, get_origin import annotated_types import cmap @@ -27,6 +27,7 @@ from pydantic.fields import FieldInfo import scenex as snx + from scenex.adaptors._base import CanvasAdaptor from scenex.model._view import View logger = logging.getLogger("scenex.imgui") @@ -39,7 +40,7 @@ def add_imgui_controls(view: View) -> None: snx_canvas_model = view.canvas snx_canvas_adaptor = snx_canvas_model._get_adaptors(backend="pygfx")[0] snx_view_adaptor = view._get_adaptors(backend="pygfx")[0] - render_canv = snx_canvas_model._get_native() + render_canv = cast("CanvasAdaptor", snx_canvas_adaptor)._snx_get_native() if not ( isinstance(snx_canvas_adaptor, PygfxCanvasAdaptor) diff --git a/src/scenex/model/_base.py b/src/scenex/model/_base.py index 08b1a1ef..1c2a8243 100644 --- a/src/scenex/model/_base.py +++ b/src/scenex/model/_base.py @@ -87,8 +87,3 @@ def _get_adaptors( reg = get_adaptor_registry(backend=backend) return [reg.get_adaptor(self, create=create)] - - def _get_native(self, backend: str | None = None, create: bool = False) -> Any: - """Get the native object for this model.""" - if adaptors := self._get_adaptors(backend=backend, create=create): - return adaptors[0]._snx_get_native() diff --git a/tests/app/test_wx.py b/tests/app/test_wx.py index 946e154d..22030d9a 100644 --- a/tests/app/test_wx.py +++ b/tests/app/test_wx.py @@ -67,7 +67,7 @@ def _validate_ray(maybe_ray: Ray | None) -> Ray: def test_mouse_press(evented_canvas: snx.Canvas) -> None: native = cast( "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] - )._snx_get_window_ref() + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) @@ -100,7 +100,7 @@ def test_mouse_press(evented_canvas: snx.Canvas) -> None: def test_mouse_release(evented_canvas: snx.Canvas) -> None: native = cast( "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] - )._snx_get_window_ref() + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) @@ -119,7 +119,7 @@ def test_mouse_release(evented_canvas: snx.Canvas) -> None: def test_mouse_move(evented_canvas: snx.Canvas) -> None: native = cast( "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] - )._snx_get_window_ref() + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) @@ -142,7 +142,7 @@ def test_mouse_move(evented_canvas: snx.Canvas) -> None: def test_mouse_wheel(evented_canvas: snx.Canvas) -> None: native = cast( "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] - )._snx_get_window_ref() + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) diff --git a/tests/test_basic_scene.py b/tests/test_basic_scene.py index 1714a37f..b43c2c85 100644 --- a/tests/test_basic_scene.py +++ b/tests/test_basic_scene.py @@ -1,10 +1,15 @@ from __future__ import annotations -from typing import Any +from typing import TYPE_CHECKING, Any, cast import numpy as np import scenex as snx +from scenex.adaptors._auto import determine_backend + +if TYPE_CHECKING: + from scenex.adaptors._pygfx._scene import Scene as PygfxScene + from scenex.adaptors._vispy._scene import Scene as VispyScene EXPECT_REPR = """ Scene @@ -50,13 +55,21 @@ def test_basic_view(basic_view: snx.View) -> None: assert isinstance(ary, np.ndarray) +def _native_scene(scene: snx.Scene) -> Any: + """Gets the visualization toolkit scene object corresponding to the view.""" + if determine_backend() == "pygfx": + return cast("PygfxScene", scene._get_adaptors(create=True)[0])._pygfx_node + if determine_backend() == "vispy": + return cast("VispyScene", scene._get_adaptors(create=True)[0])._vispy_node + + def test_view_tree_matches_native(basic_view: snx.View) -> None: """Test that the structure of the tree generated by the model matches the structure of the tree generated by the native backend.""" basic_view._get_adaptors(create=True) model_tree = snx.util.tree_dict(basic_view.scene, obj_name=_obj_name) - native_scene = basic_view.scene._get_native() + native_scene = _native_scene(basic_view.scene) view_tree = snx.util.tree_dict(native_scene, obj_name=_obj_name) assert isinstance(view_tree, dict) assert model_tree == view_tree @@ -70,8 +83,8 @@ def test_changing_parent_updates_adaptor() -> None: img1 = snx.Image(data=np.random.randint(0, 255, (10, 10), dtype=np.uint8)) img2 = snx.Image(data=np.random.randint(0, 255, (10, 10), dtype=np.uint8)) - scene1_native = scene1._get_native(create=True) - scene2_native = scene2._get_native(create=True) + scene1_native = _native_scene(scene1) + scene2_native = _native_scene(scene2) # nothing is in any scene yet assert "Image" not in {_obj_name(x) for x in scene2_native.children} From 2d1ab03e39716684d35f67b0cc0dce8ecb8cceff Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 14:14:47 -0500 Subject: [PATCH 072/120] Fix pre-commit --- .pre-commit-config.yaml | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml index 61959a0d..d938a9d8 100644 --- a/.pre-commit-config.yaml +++ b/.pre-commit-config.yaml @@ -27,26 +27,26 @@ repos: language: system types_or: [python, pyi] require_serial: true - entry: uv run ruff format --force-exclude + entry: uv run --active ruff format --force-exclude - id: ruff-check name: ruff check language: system types_or: [python, pyi] require_serial: true - entry: uv run ruff check --force-exclude + entry: uv run --active ruff check --force-exclude args: [--output-format=full, --show-fixes, --exit-non-zero-on-fix] - id: mypy name: mypy language: system types_or: [python, pyi] require_serial: true - entry: uv run mypy + entry: uv run --active mypy - id: pyright name: pyright language: system types_or: [python, pyi] require_serial: true - entry: uv run pyright + entry: uv run --active pyright - repo: https://github.com/crate-ci/typos rev: v1.34.0 From 5016c7aca313fb1ba1ec8b5f56a2fe676f8ac39b Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 15:01:56 -0500 Subject: [PATCH 073/120] Fix some linting errors --- pyproject.toml | 4 ++-- tests/app/test_jupyter.py | 25 +++++++++++++++++++------ tests/app/test_qt.py | 31 +++++++++++++++++++++++-------- 3 files changed, 44 insertions(+), 16 deletions(-) diff --git a/pyproject.toml b/pyproject.toml index 3d299e7e..37c235e6 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -75,7 +75,7 @@ docs = [ dev = [ { include-group = "test" }, { include-group = "docs" }, - "scenex[pygfx,vispy,imgui,wx,jupyter,pyqt]", + "scenex[pygfx,vispy,imgui,jupyter,pyqt]", # FIXME: Add wx (and prevent it from breaking pre-commit) "imageio[tifffile] >=2.20", "ipython", "mypy", @@ -148,7 +148,7 @@ module = ["rendercanvas.*"] follow_untyped_imports = true [[tool.mypy.overrides]] -module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*", "qtpy.*", "ipywidgets.*", "IPython.*", "jupyter", "jupyter_rfb.*", "wx.*"] +module = ["pygfx.*", "vispy.*", "wgpu.*", "glfw.*", "pylinalg.*", "qtpy.*", "ipywidgets.*", "IPython.*", "jupyter", "jupyter_rfb.*", "wx.*", "pytestqt.*"] ignore_missing_imports = true [tool.pydantic-mypy] diff --git a/tests/app/test_jupyter.py b/tests/app/test_jupyter.py index 357b2eb8..b0fad591 100644 --- a/tests/app/test_jupyter.py +++ b/tests/app/test_jupyter.py @@ -2,6 +2,7 @@ from __future__ import annotations +from typing import TYPE_CHECKING, cast from unittest.mock import MagicMock import pytest @@ -12,6 +13,9 @@ from scenex.app.events import MouseButton, MouseEvent, Ray, WheelEvent from scenex.model._transform import Transform +if TYPE_CHECKING: + from scenex.adaptors._base import CanvasAdaptor + if determine_app() != GuiFrontend.JUPYTER: pytest.skip( "Skipping Jupyter tests as Jupyter will not be used in this environment", @@ -37,7 +41,6 @@ def evented_canvas() -> snx.Canvas: view = snx.View(scene=scene, camera=camera) canvas = snx.Canvas() canvas.views.append(view) - _native = canvas._get_adaptors(create=True)[0]._snx_get_native() return canvas @@ -52,7 +55,9 @@ def _validate_ray(maybe_ray: Ray | None) -> Ray: def test_pointer_down(evented_canvas: snx.Canvas) -> None: - native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (0, 0) @@ -97,7 +102,9 @@ def test_pointer_down(evented_canvas: snx.Canvas) -> None: def test_pointer_up(evented_canvas: snx.Canvas) -> None: - native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (0, 0) @@ -121,7 +128,9 @@ def test_pointer_up(evented_canvas: snx.Canvas) -> None: def test_pointer_move(evented_canvas: snx.Canvas) -> None: - native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (0, 0) @@ -164,7 +173,9 @@ def test_pointer_move(evented_canvas: snx.Canvas) -> None: def test_mouse_double_click(evented_canvas: snx.Canvas) -> None: - native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (0, 0) @@ -188,7 +199,9 @@ def test_mouse_double_click(evented_canvas: snx.Canvas) -> None: def test_wheel(evented_canvas: snx.Canvas) -> None: - native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (0, 0) diff --git a/tests/app/test_qt.py b/tests/app/test_qt.py index d8c9737f..6eae81a5 100644 --- a/tests/app/test_qt.py +++ b/tests/app/test_qt.py @@ -2,7 +2,7 @@ from __future__ import annotations -from typing import TYPE_CHECKING +from typing import TYPE_CHECKING, cast from unittest.mock import MagicMock import pytest @@ -12,11 +12,14 @@ from scenex.app.events import MouseButton, MouseEvent, Ray from scenex.model._transform import Transform +if TYPE_CHECKING: + from scenex.adaptors._base import CanvasAdaptor + if determine_app() == GuiFrontend.QT: from qtpy.QtCore import QPoint, Qt if TYPE_CHECKING: - from pytestqt.qtbot import QtBot + from pytestqt.qtbot import QtBot # pyright: ignore[reportMissingImports] else: pytest.skip( "Skipping Qt tests as Qt will not be used in this environment", @@ -31,7 +34,9 @@ def evented_canvas(qtbot: QtBot) -> snx.Canvas: view = snx.View(scene=scene, camera=camera) canvas = snx.Canvas() canvas.views.append(view) - native = canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", canvas._get_adaptors(create=True)[0] + )._snx_get_native() qtbot.addWidget(native) return canvas @@ -42,7 +47,9 @@ def _validate_ray(maybe_ray: Ray | None) -> Ray: def test_mouse_press(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: - native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) @@ -73,7 +80,9 @@ def test_mouse_press(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: def test_mouse_release(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: - native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) @@ -90,7 +99,9 @@ def test_mouse_release(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: def test_mouse_move(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: - native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) @@ -111,7 +122,9 @@ def test_mouse_move(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: def test_mouse_click(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: - native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) @@ -137,7 +150,9 @@ def test_mouse_click(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: def test_mouse_double_click(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: - native = evented_canvas._get_adaptors(create=True)[0]._snx_get_native() + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) press_point = (5, 10) From 46fcf08835f96915eeb2f99e516083a4c29551d5 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 16:36:03 -0500 Subject: [PATCH 074/120] WIP: Fix wx tests This requires the process_events method from NDV...and I threw in call_later just for funsies --- src/scenex/adaptors/_vispy/_canvas.py | 3 +++ src/scenex/app/_auto.py | 10 +++++++++- src/scenex/app/_jupyter.py | 12 ++++++++++++ src/scenex/app/_qt.py | 11 ++++++++++- src/scenex/app/_wx.py | 10 ++++++++++ tests/app/test_wx.py | 1 - 6 files changed, 44 insertions(+), 3 deletions(-) diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index 126b5d18..7ceea277 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -53,6 +53,9 @@ def _snx_get_native(self) -> Any: def _snx_set_visible(self, arg: bool) -> None: # show the qt canvas we patched earlier in __init__ app().show(self, arg) + # HACK + self._canvas.set_current() + app().process_events() def _draw(self) -> None: self._canvas.update() diff --git a/src/scenex/app/_auto.py b/src/scenex/app/_auto.py index 00827321..c1727096 100644 --- a/src/scenex/app/_auto.py +++ b/src/scenex/app/_auto.py @@ -7,7 +7,7 @@ from typing import TYPE_CHECKING, cast if TYPE_CHECKING: - from collections.abc import Iterator + from collections.abc import Callable, Iterator from typing import Any from scenex.adaptors._base import CanvasAdaptor @@ -70,6 +70,14 @@ def show(self, canvas: CanvasAdaptor, visible: bool) -> None: def install_event_filter(self, canvas: Any, model_canvas: Canvas) -> EventFilter: raise NotImplementedError("Must be implemented by subclasses.") + def process_events(self) -> None: + """Process events.""" + raise NotImplementedError("Must be implemented by subclasses.") + + def call_later(self, msec: int, func: Callable[[], None]) -> None: + """Call `func` after `msec` milliseconds.""" + raise NotImplementedError("Must be implemented by subclasses.") + def _running_apps() -> Iterator[GuiFrontend]: """Return an iterator of running GUI applications.""" diff --git a/src/scenex/app/_jupyter.py b/src/scenex/app/_jupyter.py index 49ddc868..ce57eb3d 100644 --- a/src/scenex/app/_jupyter.py +++ b/src/scenex/app/_jupyter.py @@ -166,3 +166,15 @@ def show(self, canvas: CanvasAdaptor, visible: bool) -> None: self._visible_canvases.add(canvas) display.display(native_canvas) native_canvas.layout.display = "flex" if visible else "none" + + def process_events(self) -> None: + """Process events for the application.""" + pass + + def call_later(self, msec: int, func: Callable[[], None]) -> None: + """Call `func` after `msec` milliseconds.""" + # generic implementation using python threading + + from threading import Timer + + Timer(msec / 1000, func).start() diff --git a/src/scenex/app/_qt.py b/src/scenex/app/_qt.py index ab385c8f..83d6ee27 100644 --- a/src/scenex/app/_qt.py +++ b/src/scenex/app/_qt.py @@ -3,7 +3,7 @@ import sys from typing import TYPE_CHECKING, Any, ClassVar, cast -from qtpy.QtCore import QEvent, QObject, Qt +from qtpy.QtCore import QEvent, QObject, Qt, QTimer from qtpy.QtGui import QMouseEvent, QWheelEvent from qtpy.QtWidgets import QApplication, QWidget @@ -11,6 +11,7 @@ from scenex.app.events._events import EventFilter, MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: + from collections.abc import Callable from typing import Any from scenex import Canvas @@ -142,3 +143,11 @@ def install_event_filter(self, canvas: Any, model_canvas: Canvas) -> EventFilter def show(self, canvas: CanvasAdaptor, visible: bool) -> None: cast("QWidget", canvas._snx_get_native()).setVisible(visible) + + def process_events(self) -> None: + """Process events for the application.""" + QApplication.processEvents() + + def call_later(self, msec: int, func: Callable[[], None]) -> None: + """Call `func` after `msec` milliseconds.""" + QTimer.singleShot(msec, Qt.TimerType.PreciseTimer, func) diff --git a/src/scenex/app/_wx.py b/src/scenex/app/_wx.py index f079b6a6..af6740ad 100644 --- a/src/scenex/app/_wx.py +++ b/src/scenex/app/_wx.py @@ -8,6 +8,8 @@ from scenex.app.events._events import EventFilter, MouseButton, MouseEvent, WheelEvent if TYPE_CHECKING: + from collections.abc import Callable + from scenex import Canvas from scenex.adaptors._base import CanvasAdaptor @@ -142,3 +144,11 @@ def install_event_filter( def show(self, canvas: CanvasAdaptor, visible: bool) -> None: window = canvas._snx_get_native() wx.CallAfter(window.Show, visible) + + def process_events(self) -> None: + """Process events.""" + wx.SafeYield() + + def call_later(self, msec: int, func: Callable[[], None]) -> None: + """Call `func` after `msec` milliseconds.""" + wx.CallLater(msec, func) diff --git a/tests/app/test_wx.py b/tests/app/test_wx.py index 22030d9a..82ed13f1 100644 --- a/tests/app/test_wx.py +++ b/tests/app/test_wx.py @@ -29,7 +29,6 @@ @pytest.fixture def evented_canvas(basic_view: snx.Scene) -> Iterator[snx.Canvas]: canvas = snx.show(basic_view) - canvas.render() yield canvas From b71e30ab4bb93e6d5120d1a27a08acbee5e42adc Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 18:01:04 -0500 Subject: [PATCH 075/120] Try cleaning up the rendercanvas logic --- src/scenex/adaptors/_pygfx/_canvas.py | 22 +++++++++++++--------- src/scenex/adaptors/_vispy/_canvas.py | 3 ++- 2 files changed, 15 insertions(+), 10 deletions(-) diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index 89325280..ac3f470d 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -25,29 +25,33 @@ def supports_hide_show(obj: Any) -> TypeGuard[SupportsHideShow]: return hasattr(obj, "show") and hasattr(obj, "hide") -def rendercanvas_class() -> type[BaseRenderCanvas]: +def _rendercanvas_class() -> BaseRenderCanvas: + """Obtains the appropriate class for the current GUI backend. + + Explicit since PyGFX's backend selection process may be different from ours. + """ frontend = determine_app() + if frontend == GuiFrontend.QT: from qtpy.QtCore import QSize # pyright: ignore[reportMissingImports] - from rendercanvas.qt import QRenderWidget, loop + from rendercanvas.qt import QRenderWidget class _QRenderWidget(QRenderWidget): def sizeHint(self) -> QSize: return QSize(self.width(), self.height()) - loop._rc_init() - return _QRenderWidget + # Init Qt Application - otherwise we can't create the widget + app() + return _QRenderWidget() # type: ignore[no-untyped-call] if frontend == GuiFrontend.JUPYTER: import rendercanvas.jupyter - return rendercanvas.jupyter.JupyterRenderCanvas + return rendercanvas.jupyter.JupyterRenderCanvas() if frontend == GuiFrontend.WX: - # ...still not working import rendercanvas.wx - rendercanvas.wx.loop._rc_init() - return rendercanvas.wx.WxRenderCanvas + return rendercanvas.wx.WxRenderCanvas() raise ValueError("No suitable render canvas found") @@ -57,7 +61,7 @@ class Canvas(CanvasAdaptor): def __init__(self, canvas: model.Canvas, **backend_kwargs: Any) -> None: self._canvas = canvas - self._wgpu_canvas = rendercanvas_class()() + self._wgpu_canvas = _rendercanvas_class() # FIXME: This seems to not work on my laptop, without external monitors. # The physical canvas size is still 625, 625... diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index 7ceea277..16425217 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -53,7 +53,8 @@ def _snx_get_native(self) -> Any: def _snx_set_visible(self, arg: bool) -> None: # show the qt canvas we patched earlier in __init__ app().show(self, arg) - # HACK + # HACK Needed for the wx backend to start up OpenGL context ONLY during tests. + # (Starting the event loop also does this) It'd be great if we didn't need this. self._canvas.set_current() app().process_events() From b651bbd0250099700a31678853dd9ebf27d854cf Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 18:19:04 -0500 Subject: [PATCH 076/120] Clean up some comments --- src/scenex/adaptors/_vispy/_camera.py | 6 ++---- src/scenex/adaptors/_vispy/_canvas.py | 2 +- src/scenex/utils/controllers.py | 3 ++- 3 files changed, 5 insertions(+), 6 deletions(-) diff --git a/src/scenex/adaptors/_vispy/_camera.py b/src/scenex/adaptors/_vispy/_camera.py index 5cf61428..a1f72f59 100644 --- a/src/scenex/adaptors/_vispy/_camera.py +++ b/src/scenex/adaptors/_vispy/_camera.py @@ -67,10 +67,8 @@ def _snx_set_transform(self, arg: Transform) -> None: def _snx_set_projection(self, arg: Transform) -> None: self._projection = arg - # Have to recompute the vispy transform offset if the projection changed - self._snx_set_transform(self._camera_model.transform) - # FIXME this call is redundant since _snx_set_transform does it, but it's - # worth remembering that this needs to happen. + # Recompute the vispy node transform since it's a product of multiple scenex + # Transforms self._update_vispy_node_tform() def _update_vispy_node_tform(self) -> None: diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index 16425217..1c2d5a64 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -54,7 +54,7 @@ def _snx_set_visible(self, arg: bool) -> None: # show the qt canvas we patched earlier in __init__ app().show(self, arg) # HACK Needed for the wx backend to start up OpenGL context ONLY during tests. - # (Starting the event loop also does this) It'd be great if we didn't need this. + # (Starting the event loop also does this). It'd be great if we didn't need it. self._canvas.set_current() app().process_events() diff --git a/src/scenex/utils/controllers.py b/src/scenex/utils/controllers.py index a5259cd7..eba1276c 100644 --- a/src/scenex/utils/controllers.py +++ b/src/scenex/utils/controllers.py @@ -68,7 +68,8 @@ def __call__(self, event: Event, node: Node) -> bool: # FIXME: There's a problem evident when going crazy with orbit where the # up vector gets distorted (i.e. is not in the plane of forward and - # polar axes). + # polar axes). May arise from leaving and re-entering the view while the + # mouse is held. # Step 0: Gather transform components, relative to camera center orbit_mat = node.transform.translated(-self.center) From 3175a0cf16cd147e0c5d075e8bf9008230796584 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 19:03:10 -0500 Subject: [PATCH 077/120] Clean up wx HACK --- src/scenex/adaptors/_vispy/_canvas.py | 4 ---- src/scenex/app/_wx.py | 4 ++-- tests/app/test_wx.py | 1 + 3 files changed, 3 insertions(+), 6 deletions(-) diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index 1c2d5a64..126b5d18 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -53,10 +53,6 @@ def _snx_get_native(self) -> Any: def _snx_set_visible(self, arg: bool) -> None: # show the qt canvas we patched earlier in __init__ app().show(self, arg) - # HACK Needed for the wx backend to start up OpenGL context ONLY during tests. - # (Starting the event loop also does this). It'd be great if we didn't need it. - self._canvas.set_current() - app().process_events() def _draw(self) -> None: self._canvas.update() diff --git a/src/scenex/app/_wx.py b/src/scenex/app/_wx.py index af6740ad..e4f3519b 100644 --- a/src/scenex/app/_wx.py +++ b/src/scenex/app/_wx.py @@ -142,8 +142,8 @@ def install_event_filter( return WxEventFilter(canvas, model_canvas) def show(self, canvas: CanvasAdaptor, visible: bool) -> None: - window = canvas._snx_get_native() - wx.CallAfter(window.Show, visible) + canvas._snx_get_native().Show(visible) + self.process_events() def process_events(self) -> None: """Process events.""" diff --git a/tests/app/test_wx.py b/tests/app/test_wx.py index 82ed13f1..d79ecaae 100644 --- a/tests/app/test_wx.py +++ b/tests/app/test_wx.py @@ -30,6 +30,7 @@ def evented_canvas(basic_view: snx.Scene) -> Iterator[snx.Canvas]: canvas = snx.show(basic_view) yield canvas + # FIXME: Probably good to destroy the canvas here - we may need a method for that def _processEvent(evt: wx.PyEventBinder, wdg: wx.Control, **kwargs: Any) -> None: From 78bce75430b10e69b64c94a525faf9ea4fd1bc51 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 19:04:54 -0500 Subject: [PATCH 078/120] vispy canvas: remove commented code --- src/scenex/adaptors/_vispy/_canvas.py | 6 ------ 1 file changed, 6 deletions(-) diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index 126b5d18..b89da12a 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -74,12 +74,6 @@ def _snx_add_view(self, view: model.View) -> None: self._grid.add_widget(cast("View", get_adaptor(view))._vispy_viewbox) get_adaptor(view.camera)._set_view(view.layout.width, view.layout.height) # type:ignore - # adaptor = get_adaptor(view) - # self._grid.add_widget(adaptor._snx_get_native()) - # # HACK: Update view size by passing the existing camera - # self._grid._prepare_draw(adaptor._snx_get_native()) - # cam_adaptor = get_adaptor(view.camera) - # cam_adaptor._set_view(adaptor._vispy_viewbox) # type: ignore def _snx_set_width(self, arg: int) -> None: self._canvas.size = (self._canvas.size[0], arg) From 042ce1083ce650551e2472c3bb17b0ad125fb3d4 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 19:31:28 -0500 Subject: [PATCH 079/120] Avoid interacting with non-interactive non-cameras --- src/scenex/utils/controllers.py | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/src/scenex/utils/controllers.py b/src/scenex/utils/controllers.py index eba1276c..1a3ee9ac 100644 --- a/src/scenex/utils/controllers.py +++ b/src/scenex/utils/controllers.py @@ -35,10 +35,11 @@ def __init__(self, center: tuple[float, float, float] = (0.0, 0.0, 0.0)) -> None def __call__(self, event: Event, node: Node) -> bool: """Handle mouse and wheel events to orbit the camera.""" - # TODO: Rigorous documentation - assert isinstance(node, Camera) - handled = False + # Only operate on INTERACTIVE Camera nodes + if not isinstance(node, Camera) or not node.interactive: + return False + handled = False if isinstance(event, MouseEvent): # Orbit on mouse move with left button held if ( @@ -154,9 +155,11 @@ def __init__(self) -> None: def __call__(self, event: Event, node: Node) -> bool: """Handle mouse and wheel events to pan/zoom the camera.""" - assert isinstance(node, Camera) - handled = False + # Only operate on INTERACTIVE Camera nodes + if not isinstance(node, Camera) or not node.interactive: + return False + handled = False if isinstance(event, MouseEvent): new_pos = event.world_ray.origin[:2] From 3f04f884b5f1391414d16c3254b79835b9121f5c Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 19:34:07 -0500 Subject: [PATCH 080/120] Avoid making vispy nodes interactive We don't want vispy events anyways --- src/scenex/adaptors/_vispy/_image.py | 1 - src/scenex/adaptors/_vispy/_points.py | 1 - 2 files changed, 2 deletions(-) diff --git a/src/scenex/adaptors/_vispy/_image.py b/src/scenex/adaptors/_vispy/_image.py index f1f35073..5bf59f9a 100644 --- a/src/scenex/adaptors/_vispy/_image.py +++ b/src/scenex/adaptors/_vispy/_image.py @@ -28,7 +28,6 @@ def __init__(self, image: model.Image, **backend_kwargs: Any) -> None: ) self._snx_set_data(image.data) self._vispy_node.visible = True - self._vispy_node.interactive = True def _snx_set_transform(self, arg: Transform) -> None: # Offset accounting for vispy's pixel centers at half-integer locations diff --git a/src/scenex/adaptors/_vispy/_points.py b/src/scenex/adaptors/_vispy/_points.py index dc20ab30..45d59fad 100644 --- a/src/scenex/adaptors/_vispy/_points.py +++ b/src/scenex/adaptors/_vispy/_points.py @@ -46,7 +46,6 @@ def __init__(self, points: model.Points, **backend_kwargs: Any) -> None: edge_width=points.edge_width, face_color=points.face_color, ) - self._vispy_node.interactive = True def _snx_set_coords(self, coords: npt.NDArray) -> None: # TODO: Will this overwrite our other parameters? From 4cf37ac727998068c1f86bb5bb6d5727803f92bd Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 4 Sep 2025 19:35:40 -0500 Subject: [PATCH 081/120] Remove commented-out code --- src/scenex/adaptors/_vispy/_view.py | 2 -- 1 file changed, 2 deletions(-) diff --git a/src/scenex/adaptors/_vispy/_view.py b/src/scenex/adaptors/_vispy/_view.py index edb2ddb3..8040d2c1 100644 --- a/src/scenex/adaptors/_vispy/_view.py +++ b/src/scenex/adaptors/_vispy/_view.py @@ -84,8 +84,6 @@ def _snx_set_camera(self, cam: model.Camera) -> None: self._cam_adaptor = cast("_camera.Camera", get_adaptor(cam)) self._vispy_camera = self._cam_adaptor._vispy_node if hasattr(self, "_vispy_viewbox"): - # s = self._vispy_camera.transform.scale - # t = self._vispy_camera.transform.translate self._vispy_viewbox.camera = self._vispy_camera # Vispy camera transforms need knowledge of viewbox # (specifically, its size) From 21b520af125e81e01f49fd2daa5a1c3320e96a31 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 5 Sep 2025 10:35:56 -0500 Subject: [PATCH 082/120] Swtich from Event.type string to subdataclasses --- src/scenex/app/_jupyter.py | 23 +-- src/scenex/app/_qt.py | 26 +-- src/scenex/app/_wx.py | 20 ++- src/scenex/app/events/__init__.py | 26 ++- src/scenex/app/events/_events.py | 39 ++++- src/scenex/utils/controllers.py | 277 +++++++++++++++--------------- tests/app/test_jupyter.py | 71 ++++---- tests/app/test_qt.py | 72 ++++---- tests/app/test_wx.py | 52 +++--- tests/utils/test_controllers.py | 32 ++-- 10 files changed, 349 insertions(+), 289 deletions(-) diff --git a/src/scenex/app/_jupyter.py b/src/scenex/app/_jupyter.py index ce57eb3d..0f8e83f7 100644 --- a/src/scenex/app/_jupyter.py +++ b/src/scenex/app/_jupyter.py @@ -7,7 +7,15 @@ from jupyter_rfb import RemoteFrameBuffer from scenex.app._auto import App -from scenex.app.events._events import EventFilter, MouseButton, MouseEvent, WheelEvent +from scenex.app.events._events import ( + EventFilter, + MouseButton, + MouseDoublePressEvent, + MouseMoveEvent, + MousePressEvent, + MouseReleaseEvent, + WheelEvent, +) if TYPE_CHECKING: from collections.abc import Callable @@ -43,8 +51,7 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: canvas_pos = (ev["x"], ev["y"]) if world_ray := filter._model_canvas.to_world(canvas_pos): filter._model_canvas.handle( - MouseEvent( - type="move", + MouseMoveEvent( canvas_pos=canvas_pos, world_ray=world_ray, buttons=filter._active_button, @@ -56,8 +63,7 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: filter._active_button |= btn if world_ray := filter._model_canvas.to_world(canvas_pos): filter._model_canvas.handle( - MouseEvent( - type="press", + MousePressEvent( canvas_pos=canvas_pos, world_ray=world_ray, buttons=btn, @@ -72,8 +78,7 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: # This could cause unintended behavior. See # https://github.com/vispy/jupyter_rfb/blob/62831dd5a87bc19b4fd5f921d802ed21141e61ec/js/lib/widget.js#L270 filter._model_canvas.handle( - MouseEvent( - type="double_press", + MouseDoublePressEvent( canvas_pos=canvas_pos, world_ray=world_ray, buttons=btn, @@ -85,8 +90,7 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: filter._active_button &= ~btn if world_ray := filter._model_canvas.to_world(canvas_pos): filter._model_canvas.handle( - MouseEvent( - type="release", + MouseReleaseEvent( canvas_pos=canvas_pos, world_ray=world_ray, buttons=btn, @@ -97,7 +101,6 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: if world_ray := filter._model_canvas.to_world(canvas_pos): filter._model_canvas.handle( WheelEvent( - type="wheel", canvas_pos=canvas_pos, world_ray=world_ray, buttons=filter._active_button, diff --git a/src/scenex/app/_qt.py b/src/scenex/app/_qt.py index 83d6ee27..a5edd36d 100644 --- a/src/scenex/app/_qt.py +++ b/src/scenex/app/_qt.py @@ -8,7 +8,15 @@ from qtpy.QtWidgets import QApplication, QWidget from scenex.app._auto import App -from scenex.app.events._events import EventFilter, MouseButton, MouseEvent, WheelEvent +from scenex.app.events._events import ( + EventFilter, + MouseButton, + MouseDoublePressEvent, + MouseMoveEvent, + MousePressEvent, + MouseReleaseEvent, + WheelEvent, +) if TYPE_CHECKING: from collections.abc import Callable @@ -56,35 +64,28 @@ def _convert_event(self, qevent: QEvent) -> Event | None: etype = qevent.type() btn = self.mouse_btn(qevent.button()) if etype == QEvent.Type.MouseMove: - return MouseEvent( - type="move", + return MouseMoveEvent( canvas_pos=canvas_pos, world_ray=ray, buttons=self._active_buttons, ) elif etype == QEvent.Type.MouseButtonDblClick: self._active_buttons |= btn - return MouseEvent( - type="double_press", + return MouseDoublePressEvent( canvas_pos=canvas_pos, world_ray=ray, buttons=btn, ) elif etype == QEvent.Type.MouseButtonPress: self._active_buttons |= btn - return MouseEvent( - type="press", + return MousePressEvent( canvas_pos=canvas_pos, world_ray=ray, buttons=btn, ) - # FIXME user might want to know (a) which button was just released - # and (b) which buttons are still pressed. (a) is likely more common, but we - # may want to revise the design. elif etype == QEvent.Type.MouseButtonRelease: self._active_buttons &= ~btn - return MouseEvent( - type="release", + return MouseReleaseEvent( canvas_pos=canvas_pos, world_ray=ray, buttons=btn, @@ -96,7 +97,6 @@ def _convert_event(self, qevent: QEvent) -> Event | None: if not (ray := self._model_canvas.to_world(canvas_pos)): return None return WheelEvent( - type="wheel", canvas_pos=canvas_pos, world_ray=ray, buttons=self._active_buttons, diff --git a/src/scenex/app/_wx.py b/src/scenex/app/_wx.py index e4f3519b..815ac93f 100644 --- a/src/scenex/app/_wx.py +++ b/src/scenex/app/_wx.py @@ -5,7 +5,14 @@ import wx from scenex.app._auto import App -from scenex.app.events._events import EventFilter, MouseButton, MouseEvent, WheelEvent +from scenex.app.events._events import ( + EventFilter, + MouseButton, + MouseMoveEvent, + MousePressEvent, + MouseReleaseEvent, + WheelEvent, +) if TYPE_CHECKING: from collections.abc import Callable @@ -51,9 +58,7 @@ def _on_mouse_down(self, event: wx.MouseEvent) -> None: pos = event.GetPosition() if ray := self._model_canvas.to_world((pos.x, pos.y)): self._model_canvas.handle( - MouseEvent( - type="press", canvas_pos=(pos.x, pos.y), world_ray=ray, buttons=btn - ) + MousePressEvent(canvas_pos=(pos.x, pos.y), world_ray=ray, buttons=btn) ) event.Skip() @@ -63,8 +68,7 @@ def _on_mouse_up(self, event: wx.MouseEvent) -> None: pos = event.GetPosition() if ray := self._model_canvas.to_world((pos.x, pos.y)): self._model_canvas.handle( - MouseEvent( - type="release", + MouseReleaseEvent( canvas_pos=(pos.x, pos.y), world_ray=ray, buttons=btn, @@ -76,8 +80,7 @@ def _on_mouse_move(self, event: wx.MouseEvent) -> None: pos = event.GetPosition() if ray := self._model_canvas.to_world((pos.x, pos.y)): self._model_canvas.handle( - MouseEvent( - type="move", + MouseMoveEvent( canvas_pos=(pos.x, pos.y), world_ray=ray, buttons=self._active_button, @@ -97,7 +100,6 @@ def _on_wheel(self, event: wx.MouseEvent) -> None: self._model_canvas.handle( WheelEvent( - type="wheel", canvas_pos=(pos.x, pos.y), world_ray=ray, buttons=self._active_button, diff --git a/src/scenex/app/events/__init__.py b/src/scenex/app/events/__init__.py index 4488f208..13aab424 100644 --- a/src/scenex/app/events/__init__.py +++ b/src/scenex/app/events/__init__.py @@ -1,5 +1,27 @@ """The Scenex Event Abstraction.""" -from ._events import Event, EventFilter, MouseButton, MouseEvent, Ray, WheelEvent +from ._events import ( + Event, + EventFilter, + MouseButton, + MouseDoublePressEvent, + MouseEvent, + MouseMoveEvent, + MousePressEvent, + MouseReleaseEvent, + Ray, + WheelEvent, +) -__all__ = ["Event", "EventFilter", "MouseButton", "MouseEvent", "Ray", "WheelEvent"] +__all__ = [ + "Event", + "EventFilter", + "MouseButton", + "MouseDoublePressEvent", + "MouseEvent", + "MouseMoveEvent", + "MousePressEvent", + "MouseReleaseEvent", + "Ray", + "WheelEvent", +] diff --git a/src/scenex/app/events/_events.py b/src/scenex/app/events/_events.py index 2e7eb8a8..3c72c66b 100644 --- a/src/scenex/app/events/_events.py +++ b/src/scenex/app/events/_events.py @@ -5,12 +5,14 @@ from typing import NamedTuple +# Note that scenex follows the inheritance pattern for event subtypes. +# This enables both extensibility, such that new event types can be added easily +# even downstream, and also structured type checking. @dataclass class Event: """A general interaction event.""" - # TODO: Enum? - type: str + pass class MouseButton(IntFlag): @@ -37,16 +39,41 @@ def point_at_distance(self, distance: float) -> tuple[float, float, float]: @dataclass class MouseEvent(Event): - """A general mouse interaction event.""" + """Base class for mouse interaction events.""" - type: str canvas_pos: tuple[float, float] world_ray: Ray - # TODO: Enum? - # TODO: Just a MouseButton, you can AND the MouseButtons buttons: MouseButton +@dataclass +class MouseMoveEvent(MouseEvent): + """Mouse move event.""" + + pass + + +@dataclass +class MousePressEvent(MouseEvent): + """Mouse press event.""" + + pass + + +@dataclass +class MouseReleaseEvent(MouseEvent): + """Mouse release event.""" + + pass + + +@dataclass +class MouseDoublePressEvent(MouseEvent): + """Mouse double press event.""" + + pass + + @dataclass class WheelEvent(MouseEvent): """A mouse interaction event describing wheel movement.""" diff --git a/src/scenex/utils/controllers.py b/src/scenex/utils/controllers.py index 1a3ee9ac..1bed0308 100644 --- a/src/scenex/utils/controllers.py +++ b/src/scenex/utils/controllers.py @@ -5,7 +5,15 @@ import numpy as np import pylinalg as la -from scenex.app.events._events import Event, MouseButton, MouseEvent, Ray, WheelEvent +from scenex.app.events._events import ( + Event, + MouseButton, + MouseEvent, + MouseMoveEvent, + MousePressEvent, + Ray, + WheelEvent, +) from scenex.model import Camera, Node @@ -40,98 +48,98 @@ def __call__(self, event: Event, node: Node) -> bool: return False handled = False - if isinstance(event, MouseEvent): - # Orbit on mouse move with left button held - if ( - event.type == "move" - and event.buttons == MouseButton.LEFT - and self._last_canvas_pos is not None - ): - # The process of orbiting is as follows: - # 1. Compute the azimuth and elevation changes based on mouse movement. - # - Azimuth describes the angle between the the positive X axis and - # the projection of the camera's position onto the XY plane. - # - Elevation describes the angle between the camera's position and - # the positive Z axis. - # 2. Ensure these changes are clamped to valid ranges (only really - # applies to elevation). - # 3. Adjust the current transform by: - # a. Translating by the negative of the centerpoint, to take it out of - # the computation. - # b. Rotating to adjust the elevation. The axis of rotation is defined - # by the camera's right vector. Note that this is done before the - # azimuth adjustment because that adjustment will alter the - # camera's right vector. - # c. Rotating to adjust the azimuth. The axis of rotation is always - # the positive Z axis. - # d. Translating by the centerpoint, to reorient the camera around - # that centerpoint. - - # FIXME: There's a problem evident when going crazy with orbit where the - # up vector gets distorted (i.e. is not in the plane of forward and - # polar axes). May arise from leaving and re-entering the view while the - # mouse is held. - - # Step 0: Gather transform components, relative to camera center - orbit_mat = node.transform.translated(-self.center) - position, rotation, _scale = la.mat_decompose(orbit_mat.T) - # TODO: Make this a controller parameter - camera_polar = (0, 0, 1) - camera_right = np.cross(camera_polar, position) - - # Step 1 - d_azimuth = self._last_canvas_pos[0] - event.canvas_pos[0] - d_elevation = self._last_canvas_pos[1] - event.canvas_pos[1] - - # Step 2 - e_bound = float(la.vec_angle(position, (0, 0, 1)) * 180 / math.pi) - if e_bound + d_elevation < 0: - d_elevation = -e_bound - if e_bound + d_elevation > 180: - d_elevation = 180 - e_bound - - # Step 3 - node.transform = ( - node.transform.translated(-self.center) # 3a - .rotated(d_elevation, camera_right) # 3b - .rotated(d_azimuth, camera_polar) # 3c - .translated(self.center) # 3d - ) - - # Step n+1: Update last position - self._last_canvas_pos = self._last_canvas_pos - handled = True - - # Pan on mouse move with right button held - elif event.type == "press" and event.buttons == MouseButton.RIGHT: - self._pan_ray = event.world_ray - - # Pan on mouse move with right button held - elif ( - event.type == "move" - and event.buttons == MouseButton.RIGHT - and self._pan_ray is not None - ): - dr = np.linalg.norm(node.transform.map((0, 0, 0))[:3] - self.center) - old_center = self._pan_ray.origin[:3] + np.multiply( - dr, self._pan_ray.direction - ) - new_center = event.world_ray.origin[:3] + np.multiply( - dr, event.world_ray.direction - ) - diff = np.subtract(old_center, new_center) - node.transform = node.transform.translated(diff) - self.center += diff - handled = True - - elif isinstance(event, WheelEvent): - _dx, dy = event.angle_delta - if dy: - dr = node.transform.map((0, 0, 0))[:3] - self.center - zoom = self._zoom_factor(dy) - node.transform = node.transform.translated(dr * (zoom - 1)) - handled = True + # Orbit on mouse move with left button held + if ( + isinstance(event, MouseMoveEvent) + and event.buttons == MouseButton.LEFT + and self._last_canvas_pos is not None + ): + # The process of orbiting is as follows: + # 1. Compute the azimuth and elevation changes based on mouse movement. + # - Azimuth describes the angle between the the positive X axis and + # the projection of the camera's position onto the XY plane. + # - Elevation describes the angle between the camera's position and + # the positive Z axis. + # 2. Ensure these changes are clamped to valid ranges (only really + # applies to elevation). + # 3. Adjust the current transform by: + # a. Translating by the negative of the centerpoint, to take it out of + # the computation. + # b. Rotating to adjust the elevation. The axis of rotation is defined + # by the camera's right vector. Note that this is done before the + # azimuth adjustment because that adjustment will alter the + # camera's right vector. + # c. Rotating to adjust the azimuth. The axis of rotation is always + # the positive Z axis. + # d. Translating by the centerpoint, to reorient the camera around + # that centerpoint. + + # FIXME: There's a problem evident when going crazy with orbit where the + # up vector gets distorted (i.e. is not in the plane of forward and + # polar axes). May arise from leaving and re-entering the view while the + # mouse is held. + + # Step 0: Gather transform components, relative to camera center + orbit_mat = node.transform.translated(-self.center) + position, rotation, _scale = la.mat_decompose(orbit_mat.T) + # TODO: Make this a controller parameter + camera_polar = (0, 0, 1) + camera_right = np.cross(camera_polar, position) + + # Step 1 + d_azimuth = self._last_canvas_pos[0] - event.canvas_pos[0] + d_elevation = self._last_canvas_pos[1] - event.canvas_pos[1] + + # Step 2 + e_bound = float(la.vec_angle(position, (0, 0, 1)) * 180 / math.pi) + if e_bound + d_elevation < 0: + d_elevation = -e_bound + if e_bound + d_elevation > 180: + d_elevation = 180 - e_bound + + # Step 3 + node.transform = ( + node.transform.translated(-self.center) # 3a + .rotated(d_elevation, camera_right) # 3b + .rotated(d_azimuth, camera_polar) # 3c + .translated(self.center) # 3d + ) + + # Step n+1: Update last position + self._last_canvas_pos = self._last_canvas_pos + handled = True + + # Pan on mouse move with right button held + elif isinstance(event, MousePressEvent) and event.buttons == MouseButton.RIGHT: + self._pan_ray = event.world_ray + + # Pan on mouse move with right button held + elif ( + isinstance(event, MouseMoveEvent) + and event.buttons == MouseButton.RIGHT + and self._pan_ray is not None + ): + dr = np.linalg.norm(node.transform.map((0, 0, 0))[:3] - self.center) + old_center = self._pan_ray.origin[:3] + np.multiply( + dr, self._pan_ray.direction + ) + new_center = event.world_ray.origin[:3] + np.multiply( + dr, event.world_ray.direction + ) + diff = np.subtract(old_center, new_center) + node.transform = node.transform.translated(diff) + self.center += diff + handled = True + + elif isinstance(event, WheelEvent): + _dx, dy = event.angle_delta + if dy: + dr = node.transform.map((0, 0, 0))[:3] - self.center + zoom = self._zoom_factor(dy) + node.transform = node.transform.translated(dr * (zoom - 1)) + handled = True + if isinstance(event, MouseEvent): self._last_canvas_pos = event.canvas_pos return handled @@ -160,52 +168,51 @@ def __call__(self, event: Event, node: Node) -> bool: return False handled = False - if isinstance(event, MouseEvent): - new_pos = event.world_ray.origin[:2] - # Panning involves keeping a particular position underneath the cursor. - # That position is recorded on a left mouse button press. - if event.type == "press" and MouseButton.LEFT in event.buttons: - self._drag_pos = new_pos - # Every time the cursor is moved, until the left mouse button is released, - # We translate the camera such that the position is back under the cursor - # (i.e. under the world ray origin) - elif ( - event.type == "move" - and MouseButton.LEFT in event.buttons - and self._drag_pos - ): - dx = self._drag_pos[0] - new_pos[0] - dy = self._drag_pos[1] - new_pos[1] - node.transform = node.transform.translated((dx, dy)) + # Panning involves keeping a particular position underneath the cursor. + # That position is recorded on a left mouse button press. + if isinstance(event, MousePressEvent) and MouseButton.LEFT in event.buttons: + self._drag_pos = event.world_ray.origin[:2] + # Every time the cursor is moved, until the left mouse button is released, + # We translate the camera such that the position is back under the cursor + # (i.e. under the world ray origin) + elif ( + isinstance(event, MouseMoveEvent) + and MouseButton.LEFT in event.buttons + and self._drag_pos + ): + new_pos = event.world_ray.origin[:2] + dx = self._drag_pos[0] - new_pos[0] + dy = self._drag_pos[1] - new_pos[1] + node.transform = node.transform.translated((dx, dy)) + handled = True + + # Note that while panning adjusts the camera's transform matrix, zooming + # adjusts the projection matrix. + elif isinstance(event, WheelEvent): + # Zoom while keeping the position under the cursor fixed. + _dx, dy = event.angle_delta + if dy: + # Step 1: Adjust the projection matrix to zoom in or out. + zoom = self._zoom_factor(dy) + node.projection = node.projection.scaled((zoom, zoom, 1.0)) + + # Step 2: Adjust the transform matrix to maintain the position + # under the cursor. The math is largely borrowed from + # https://github.com/pygfx/pygfx/blob/520af2d5bb2038ec309ef645e4a60d502f00d181/pygfx/controllers/_panzoom.py#L164 + + # Find the distance between the world ray and the camera + zoom_center = np.asarray(event.world_ray.origin)[:2] + camera_center = np.asarray(node.transform.map((0, 0)))[:2] + # Compute the world distance before the zoom + delta_screen1 = zoom_center - camera_center + # Compute the world distance after the zoom + delta_screen2 = delta_screen1 * zoom + # The pan is the difference between the two + pan = (delta_screen2 - delta_screen1) / zoom + node.transform = node.transform.translated(pan) handled = True - # Note that while panning adjusts the camera's transform matrix, zooming - # adjusts the projection matrix. - elif isinstance(event, WheelEvent): - # Zoom while keeping the position under the cursor fixed. - _dx, dy = event.angle_delta - if dy: - # Step 1: Adjust the projection matrix to zoom in or out. - zoom = self._zoom_factor(dy) - node.projection = node.projection.scaled((zoom, zoom, 1.0)) - - # Step 2: Adjust the transform matrix to maintain the position - # under the cursor. The math is largely borrowed from - # https://github.com/pygfx/pygfx/blob/520af2d5bb2038ec309ef645e4a60d502f00d181/pygfx/controllers/_panzoom.py#L164 - - # Find the distance between the world ray and the camera - zoom_center = np.asarray(event.world_ray.origin)[:2] - camera_center = np.asarray(node.transform.map((0, 0)))[:2] - # Compute the world distance before the zoom - delta_screen1 = zoom_center - camera_center - # Compute the world distance after the zoom - delta_screen2 = delta_screen1 * zoom - # The pan is the difference between the two - pan = (delta_screen2 - delta_screen1) / zoom - node.transform = node.transform.translated(pan) - handled = True - return handled def _zoom_factor(self, delta: float) -> float: diff --git a/tests/app/test_jupyter.py b/tests/app/test_jupyter.py index b0fad591..6c9d11b6 100644 --- a/tests/app/test_jupyter.py +++ b/tests/app/test_jupyter.py @@ -10,7 +10,15 @@ import scenex as snx from scenex.adaptors._auto import determine_backend from scenex.app import GuiFrontend, determine_app -from scenex.app.events import MouseButton, MouseEvent, Ray, WheelEvent +from scenex.app.events import ( + MouseButton, + MouseDoublePressEvent, + MouseMoveEvent, + MousePressEvent, + MouseReleaseEvent, + Ray, + WheelEvent, +) from scenex.model._transform import Transform if TYPE_CHECKING: @@ -71,11 +79,10 @@ def test_pointer_down(evented_canvas: snx.Canvas) -> None: } ) mock.assert_called_once_with( - MouseEvent( - "press", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MousePressEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) @@ -91,11 +98,10 @@ def test_pointer_down(evented_canvas: snx.Canvas) -> None: } ) mock.assert_called_once_with( - MouseEvent( - "press", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.RIGHT, + MousePressEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.RIGHT, ), evented_canvas.views[0].camera, ) @@ -117,11 +123,10 @@ def test_pointer_up(evented_canvas: snx.Canvas) -> None: } ) mock.assert_called_once_with( - MouseEvent( - "release", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MouseReleaseEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) @@ -143,11 +148,10 @@ def test_pointer_move(evented_canvas: snx.Canvas) -> None: } ) mock.assert_called_once_with( - MouseEvent( - "move", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MouseMoveEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) @@ -162,11 +166,10 @@ def test_pointer_move(evented_canvas: snx.Canvas) -> None: } ) mock.assert_called_once_with( - MouseEvent( - "move", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT | MouseButton.RIGHT, + MouseMoveEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT | MouseButton.RIGHT, ), evented_canvas.views[0].camera, ) @@ -188,11 +191,10 @@ def test_mouse_double_click(evented_canvas: snx.Canvas) -> None: } ) mock.assert_called_once_with( - MouseEvent( - "double_press", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MouseDoublePressEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) @@ -216,10 +218,9 @@ def test_wheel(evented_canvas: snx.Canvas) -> None: ) mock.assert_called_once_with( WheelEvent( - "wheel", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.NONE, + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.NONE, angle_delta=(0, 120), ), evented_canvas.views[0].camera, diff --git a/tests/app/test_qt.py b/tests/app/test_qt.py index 6eae81a5..34532446 100644 --- a/tests/app/test_qt.py +++ b/tests/app/test_qt.py @@ -9,7 +9,14 @@ import scenex as snx from scenex.app import GuiFrontend, determine_app -from scenex.app.events import MouseButton, MouseEvent, Ray +from scenex.app.events import ( + MouseButton, + MouseDoublePressEvent, + MouseMoveEvent, + MousePressEvent, + MouseReleaseEvent, + Ray, +) from scenex.model._transform import Transform if TYPE_CHECKING: @@ -56,11 +63,10 @@ def test_mouse_press(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: # Press the left button qtbot.mousePress(native, Qt.MouseButton.LeftButton, pos=QPoint(*press_point)) mock.assert_called_once_with( - MouseEvent( - "press", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MousePressEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) @@ -69,11 +75,10 @@ def test_mouse_press(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: # Now press the right button qtbot.mousePress(native, Qt.MouseButton.RightButton, pos=QPoint(*press_point)) mock.assert_called_once_with( - MouseEvent( - "press", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.RIGHT, + MousePressEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.RIGHT, ), evented_canvas.views[0].camera, ) @@ -88,11 +93,10 @@ def test_mouse_release(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: press_point = (5, 10) qtbot.mouseRelease(native, Qt.MouseButton.LeftButton, pos=QPoint(*press_point)) mock.assert_called_once_with( - MouseEvent( - "release", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MouseReleaseEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) @@ -111,11 +115,10 @@ def test_mouse_move(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: mock.reset_mock() qtbot.mouseMove(native, pos=QPoint(*press_point)) mock.assert_called_once_with( - MouseEvent( - "move", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT | MouseButton.RIGHT, + MouseMoveEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT | MouseButton.RIGHT, ), evented_canvas.views[0].camera, ) @@ -130,20 +133,18 @@ def test_mouse_click(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: press_point = (5, 10) qtbot.mouseClick(native, Qt.MouseButton.LeftButton, pos=QPoint(*press_point)) assert mock.call_args_list[0].args == ( - MouseEvent( - "press", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MousePressEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) assert mock.call_args_list[1].args == ( - MouseEvent( - "release", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MouseReleaseEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) @@ -159,11 +160,10 @@ def test_mouse_double_click(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: # Note that in Qt a double click does NOT implicitly imply a release as well. qtbot.mouseDClick(native, Qt.MouseButton.LeftButton, pos=QPoint(*press_point)) assert mock.call_args_list[0].args == ( - MouseEvent( - "double_press", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MouseDoublePressEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) diff --git a/tests/app/test_wx.py b/tests/app/test_wx.py index d79ecaae..75e65a72 100644 --- a/tests/app/test_wx.py +++ b/tests/app/test_wx.py @@ -9,7 +9,14 @@ import scenex as snx from scenex.app import GuiFrontend, determine_app -from scenex.app.events import MouseButton, MouseEvent, Ray, WheelEvent +from scenex.app.events import ( + MouseButton, + MouseMoveEvent, + MousePressEvent, + MouseReleaseEvent, + Ray, + WheelEvent, +) if TYPE_CHECKING: from collections.abc import Iterator @@ -74,11 +81,10 @@ def test_mouse_press(evented_canvas: snx.Canvas) -> None: # Press the left button _processEvent(wx.EVT_LEFT_DOWN, native, pos=wx.Point(*press_point)) mock.assert_called_once_with( - MouseEvent( - "press", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MousePressEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) @@ -87,11 +93,10 @@ def test_mouse_press(evented_canvas: snx.Canvas) -> None: # Now press the right button _processEvent(wx.EVT_RIGHT_DOWN, native, pos=wx.Point(*press_point)) mock.assert_called_once_with( - MouseEvent( - "press", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.RIGHT, + MousePressEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.RIGHT, ), evented_canvas.views[0].camera, ) @@ -106,11 +111,10 @@ def test_mouse_release(evented_canvas: snx.Canvas) -> None: press_point = (5, 10) _processEvent(wx.EVT_LEFT_UP, native, pos=wx.Point(*press_point)) mock.assert_called_once_with( - MouseEvent( - "release", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT, + MouseReleaseEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT, ), evented_canvas.views[0].camera, ) @@ -129,11 +133,10 @@ def test_mouse_move(evented_canvas: snx.Canvas) -> None: mock.reset_mock() _processEvent(wx.EVT_MOTION, native, pos=wx.Point(*press_point)) mock.assert_called_once_with( - MouseEvent( - "move", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.LEFT | MouseButton.RIGHT, + MouseMoveEvent( + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.LEFT | MouseButton.RIGHT, ), evented_canvas.views[0].camera, ) @@ -149,10 +152,9 @@ def test_mouse_wheel(evented_canvas: snx.Canvas) -> None: _processEvent(wx.EVT_MOUSEWHEEL, native, pos=wx.Point(*press_point), rot=(0, 120)) mock.assert_called_once_with( WheelEvent( - "wheel", - press_point, - _validate_ray(evented_canvas.to_world(press_point)), - MouseButton.NONE, + canvas_pos=press_point, + world_ray=_validate_ray(evented_canvas.to_world(press_point)), + buttons=MouseButton.NONE, angle_delta=(0, 120), ), evented_canvas.views[0].camera, diff --git a/tests/utils/test_controllers.py b/tests/utils/test_controllers.py index 1fd0f872..f6d9870f 100644 --- a/tests/utils/test_controllers.py +++ b/tests/utils/test_controllers.py @@ -6,7 +6,13 @@ import pylinalg as la import scenex as snx -from scenex.app.events import MouseButton, MouseEvent, Ray, WheelEvent +from scenex.app.events import ( + MouseButton, + MouseMoveEvent, + MousePressEvent, + Ray, + WheelEvent, +) from scenex.model._transform import Transform from scenex.utils.controllers import OrbitController, PanZoomController @@ -21,16 +27,14 @@ def test_panzoomcontroller_pan() -> None: controller = PanZoomController() cam = snx.Camera(interactive=True, controller=controller) # Simulate mouse press - press_event = MouseEvent( - type="press", + press_event = MousePressEvent( canvas_pos=(0, 0), world_ray=Ray((10, 10, 0), (0, 0, -1)), buttons=MouseButton.LEFT, ) controller(press_event, cam) # Simulate mouse move - move_event = MouseEvent( - type="move", + move_event = MouseMoveEvent( canvas_pos=(0, 0), world_ray=Ray((15, 20, 0), (0, 0, -1)), buttons=MouseButton.LEFT, @@ -48,7 +52,6 @@ def test_panzoomcontroller_zoom() -> None: cam.set_event_filter(controller) # Simulate wheel event wheel_event = WheelEvent( - type="wheel", canvas_pos=(0, 0), world_ray=Ray((0, 0, 0), (0, 0, -1)), buttons=MouseButton.NONE, @@ -82,8 +85,7 @@ def test_orbitcontroller_orbit() -> None: pos_before = cam.transform.map((0, 0, 0))[:3] # Simulate mouse press click_pos = (view.layout.width / 2, view.layout.height / 2) - press_event = MouseEvent( - type="press", + press_event = MousePressEvent( canvas_pos=click_pos, world_ray=_validate_ray(canvas.to_world(click_pos)), buttons=MouseButton.LEFT, @@ -91,16 +93,14 @@ def test_orbitcontroller_orbit() -> None: controller(press_event, cam) # Simulate mouse move (orbit) of one horizontal pixel move_pos = (click_pos[0] + 1, click_pos[1]) - move_event = MouseEvent( - type="move", + move_event = MouseMoveEvent( canvas_pos=move_pos, world_ray=_validate_ray(canvas.to_world(move_pos)), buttons=MouseButton.LEFT, ) controller(move_event, cam) move_pos = (click_pos[0] + 1, click_pos[1] + 1) - move_event = MouseEvent( - type="move", + move_event = MouseMoveEvent( canvas_pos=move_pos, world_ray=_validate_ray(canvas.to_world(move_pos)), buttons=MouseButton.LEFT, @@ -128,7 +128,6 @@ def test_orbitcontroller_zoom() -> None: tform_before = cam.transform # Simulate wheel event wheel_event = WheelEvent( - type="wheel", canvas_pos=(0, 0), world_ray=Ray((0, 0, 10), (0, 0, -1)), buttons=MouseButton.NONE, @@ -142,7 +141,6 @@ def test_orbitcontroller_zoom() -> None: # Simulate wheel event in other direction wheel_event = WheelEvent( - type="wheel", canvas_pos=(0, 0), world_ray=Ray((0, 0, 10), (0, 0, -1)), buttons=MouseButton.NONE, @@ -177,8 +175,7 @@ def test_orbitcontroller_pan() -> None: click_pos = (view.layout.width / 2, view.layout.height / 2) world_ray_before = canvas.to_world(click_pos) assert world_ray_before is not None - press_event = MouseEvent( - type="press", + press_event = MousePressEvent( canvas_pos=click_pos, world_ray=world_ray_before, buttons=MouseButton.RIGHT, @@ -188,8 +185,7 @@ def test_orbitcontroller_pan() -> None: click_pos = (click_pos[0], click_pos[1] + view.layout.height // 2) world_ray_after = canvas.to_world(click_pos) assert world_ray_after is not None - move_event = MouseEvent( - type="move", + move_event = MouseMoveEvent( canvas_pos=click_pos, world_ray=world_ray_after, buttons=MouseButton.RIGHT, From 7cf33f1fb24c75a7896a0f9551f5ae4f6c6154ce Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 5 Sep 2025 14:06:38 -0500 Subject: [PATCH 083/120] Pin pygfx<0.13.0 for now Seems to be causing problems on Windows CI - maybe because things aren't fully released yet? --- pyproject.toml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/pyproject.toml b/pyproject.toml index 37c235e6..3cd8eab6 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -53,7 +53,7 @@ pyqt = [ wx= [ "wxpython >=4.2.2", ] -pygfx = ["pygfx>=0.9.0"] +pygfx = ["pygfx>=0.9.0,<0.13.0"] # FIXME 0.13.0 causes some problems on CI Windows that I cannot replicate locally vispy = ["vispy>=0.15.0", "pyopengl"] imgui = [ # 1.6.3 breaks type checking, 1.92 not working with pygfx From 4ac5bde506547ee46ef218c9167e94ba2438884f Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 5 Sep 2025 14:12:59 -0500 Subject: [PATCH 084/120] Fix more linting errors --- examples/event_filters.py | 2 +- src/scenex/app/_glfw.py | 19 +++++++++++-------- tests/adaptors/_vispy/test_camera.py | 6 +++--- tests/app/test_wx.py | 2 +- 4 files changed, 16 insertions(+), 13 deletions(-) diff --git a/examples/event_filters.py b/examples/event_filters.py index d66e2898..cac2d029 100644 --- a/examples/event_filters.py +++ b/examples/event_filters.py @@ -12,7 +12,7 @@ interactive=True, ) -view = snx.View(blending="default", scene=snx.Scene(children=[img])) +view = snx.View(scene=snx.Scene(children=[img])) def _img_filter(event: Event, node: snx.Node) -> bool: diff --git a/src/scenex/app/_glfw.py b/src/scenex/app/_glfw.py index a4e16ff1..be5f7b91 100644 --- a/src/scenex/app/_glfw.py +++ b/src/scenex/app/_glfw.py @@ -5,7 +5,14 @@ import glfw from scenex.app._auto import App -from scenex.app.events._events import EventFilter, MouseButton, MouseEvent, WheelEvent +from scenex.app.events import ( + EventFilter, + MouseButton, + MouseMoveEvent, + MousePressEvent, + MouseReleaseEvent, + WheelEvent, +) if TYPE_CHECKING: from typing import Any @@ -52,8 +59,7 @@ def _cursor_pos_callback(self, window: Any, xpos: float, ypos: float) -> None: canvas_pos = (xpos, ypos) if ray := self._canvas.to_world(canvas_pos): self._canvas.handle( - MouseEvent( - type="move", + MouseMoveEvent( canvas_pos=canvas_pos, world_ray=ray, buttons=self._active_button, @@ -81,8 +87,7 @@ def _mouse_button_callback( if action == glfw.PRESS: self._active_button |= BUTTONMAP[button] self._canvas.handle( - MouseEvent( - type="press", + MousePressEvent( canvas_pos=pos, world_ray=ray, buttons=self._active_button, @@ -91,8 +96,7 @@ def _mouse_button_callback( elif action == glfw.RELEASE: self._active_button &= ~BUTTONMAP[button] self._canvas.handle( - MouseEvent( - type="release", + MouseReleaseEvent( canvas_pos=pos, world_ray=ray, buttons=self._active_button, @@ -109,7 +113,6 @@ def _mouse_scroll_callback( # Mouse wheel event self._canvas.handle( WheelEvent( - type="scroll", canvas_pos=pos, world_ray=ray, buttons=self._active_button, diff --git a/tests/adaptors/_vispy/test_camera.py b/tests/adaptors/_vispy/test_camera.py index 321b0b16..f178b283 100644 --- a/tests/adaptors/_vispy/test_camera.py +++ b/tests/adaptors/_vispy/test_camera.py @@ -35,7 +35,7 @@ def test_transform_defaults(camera: tuple[snx.Camera, adaptors.Camera]) -> None: node = adaptor._vispy_node assert isinstance(node, BaseCamera) - w, h = node.viewbox.size + w, h = node.viewbox.size # pyright: ignore[reportOptionalMemberAccess] # Vispy wants to map [-1, 1] to [0, 0] # Vispy wants to map [1, -1] to [w, h] exp_tform_mat = np.asarray( @@ -58,7 +58,7 @@ def test_transform_translate(camera: tuple[snx.Camera, adaptors.Camera]) -> None # Move the camera model.transform = Transform().translated((1, 1)) - w, h = node.viewbox.size + w, h = node.viewbox.size # pyright: ignore[reportOptionalMemberAccess] # Vispy wants to map [0, 2] to [0, 0] # Vispy wants to map [2, 0] to [w, h] exp_tform_mat = np.asarray( @@ -81,7 +81,7 @@ def test_transform_scale(camera: tuple[snx.Camera, adaptors.Camera]) -> None: # Widen the projection matrix model.projection = projections.orthographic(4, 4, 4) - w, h = node.viewbox.size + w, h = node.viewbox.size # pyright: ignore[reportOptionalMemberAccess] # Vispy wants to map [-2, 2] to [0, 0] # Vispy wants to map [2, -2] to [10, 10] exp_tform_mat = np.asarray( diff --git a/tests/app/test_wx.py b/tests/app/test_wx.py index 75e65a72..7609fd45 100644 --- a/tests/app/test_wx.py +++ b/tests/app/test_wx.py @@ -25,7 +25,7 @@ from scenex.adaptors._base import CanvasAdaptor if determine_app() == GuiFrontend.WX: - import wx + import wx # pyright: ignore[reportMissingImports] else: pytest.skip( "Skipping WxPython tests as WxPython will not be used in this environment", From 7e8702de777405a5c6580905ace502d90c10def9 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 5 Sep 2025 14:17:13 -0500 Subject: [PATCH 085/120] Try adding wx back to dev deps --- pyproject.toml | 2 +- tests/app/test_wx.py | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/pyproject.toml b/pyproject.toml index 3cd8eab6..6a788aec 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -75,7 +75,7 @@ docs = [ dev = [ { include-group = "test" }, { include-group = "docs" }, - "scenex[pygfx,vispy,imgui,jupyter,pyqt]", # FIXME: Add wx (and prevent it from breaking pre-commit) + "scenex[pygfx,vispy,imgui,jupyter,pyqt,wx]", "imageio[tifffile] >=2.20", "ipython", "mypy", diff --git a/tests/app/test_wx.py b/tests/app/test_wx.py index 7609fd45..75e65a72 100644 --- a/tests/app/test_wx.py +++ b/tests/app/test_wx.py @@ -25,7 +25,7 @@ from scenex.adaptors._base import CanvasAdaptor if determine_app() == GuiFrontend.WX: - import wx # pyright: ignore[reportMissingImports] + import wx else: pytest.skip( "Skipping WxPython tests as WxPython will not be used in this environment", From 6bdd85444673ce1da0b527f27bfc4a909382a8e5 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 5 Sep 2025 14:36:08 -0500 Subject: [PATCH 086/120] Lint on Windows instead --- .github/workflows/ci.yml | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 48f491a4..fb76304e 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -22,7 +22,8 @@ jobs: - run: pipx run check-manifest lint: - runs-on: ubuntu-latest + # Avoid linting on ubuntu-latest since wx doesn't ship those wheels + runs-on: windows-latest steps: - uses: actions/checkout@v4 - uses: astral-sh/setup-uv@v6 From 972150ecb267324d2b88a7e6f219857bae43f05f Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 10 Sep 2025 15:32:24 -0500 Subject: [PATCH 087/120] Use camera vectors to compute camera right vector Otherwise there's a change the cross product is zero --- src/scenex/utils/controllers.py | 9 ++------- tests/utils/test_controllers.py | 17 ++++++----------- 2 files changed, 8 insertions(+), 18 deletions(-) diff --git a/src/scenex/utils/controllers.py b/src/scenex/utils/controllers.py index 1bed0308..9d2b930c 100644 --- a/src/scenex/utils/controllers.py +++ b/src/scenex/utils/controllers.py @@ -74,17 +74,12 @@ def __call__(self, event: Event, node: Node) -> bool: # d. Translating by the centerpoint, to reorient the camera around # that centerpoint. - # FIXME: There's a problem evident when going crazy with orbit where the - # up vector gets distorted (i.e. is not in the plane of forward and - # polar axes). May arise from leaving and re-entering the view while the - # mouse is held. - # Step 0: Gather transform components, relative to camera center orbit_mat = node.transform.translated(-self.center) - position, rotation, _scale = la.mat_decompose(orbit_mat.T) + position, _rotation, _scale = la.mat_decompose(orbit_mat.T) # TODO: Make this a controller parameter camera_polar = (0, 0, 1) - camera_right = np.cross(camera_polar, position) + camera_right = np.cross(node.forward, node.up) # Step 1 d_azimuth = self._last_canvas_pos[0] - event.canvas_pos[0] diff --git a/tests/utils/test_controllers.py b/tests/utils/test_controllers.py index f6d9870f..07fef337 100644 --- a/tests/utils/test_controllers.py +++ b/tests/utils/test_controllers.py @@ -76,7 +76,8 @@ def test_orbitcontroller_orbit() -> None: canvas.views.append(view) # Position the camera along the x-axis, looking in the negative x direction at the # center - cam.transform = Transform().rotated(90, (0, 1, 0)).translated((10, 0, 0)) + cam.transform = Transform().translated((10, 0, 0)) + cam.look_at((0, 0, 0), up=(0, 0, 1)) ray = canvas.to_world((view.layout.width / 2, view.layout.height / 2)) assert ray is not None np.testing.assert_allclose(ray.origin, (10, 0, 0), atol=1e-7) @@ -91,14 +92,7 @@ def test_orbitcontroller_orbit() -> None: buttons=MouseButton.LEFT, ) controller(press_event, cam) - # Simulate mouse move (orbit) of one horizontal pixel - move_pos = (click_pos[0] + 1, click_pos[1]) - move_event = MouseMoveEvent( - canvas_pos=move_pos, - world_ray=_validate_ray(canvas.to_world(move_pos)), - buttons=MouseButton.LEFT, - ) - controller(move_event, cam) + # Simulate mouse move (orbit) of one horizontal pixel and one vertical pixel move_pos = (click_pos[0] + 1, click_pos[1] + 1) move_event = MouseMoveEvent( canvas_pos=move_pos, @@ -106,7 +100,8 @@ def test_orbitcontroller_orbit() -> None: buttons=MouseButton.LEFT, ) controller(move_event, cam) - # Assert camera position conforms to expectation (rotated 1 degree around z axis) + # Assert camera position conforms to expectation + # (one degree around y axis and one degree around z axis) pos_after_exp = la.vec_transform_quat( pos_before, la.quat_mul( @@ -117,7 +112,7 @@ def test_orbitcontroller_orbit() -> None: ), ) pos_after_act = cam.transform.map((0, 0, 0))[:3] - np.testing.assert_allclose(pos_after_exp, pos_after_act) + np.testing.assert_allclose(pos_after_act, pos_after_exp) def test_orbitcontroller_zoom() -> None: From 969b13d959b841af1c4ba5d407c8971bac62bd5d Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 11 Sep 2025 16:42:45 -0500 Subject: [PATCH 088/120] Add in a blending mode --- examples/blending.py | 96 +++++++++++++++++++++++++++ pyproject.toml | 2 +- src/scenex/adaptors/_base.py | 2 + src/scenex/adaptors/_pygfx/_node.py | 24 ++++++- src/scenex/adaptors/_pygfx/_volume.py | 6 ++ src/scenex/adaptors/_vispy/_node.py | 16 ++++- src/scenex/model/__init__.py | 3 +- src/scenex/model/_nodes/node.py | 33 +++++++++ tests/adaptors/_pygfx/test_volume.py | 17 ++++- tests/adaptors/_vispy/test_volume.py | 20 +++++- 10 files changed, 213 insertions(+), 6 deletions(-) create mode 100644 examples/blending.py diff --git a/examples/blending.py b/examples/blending.py new file mode 100644 index 00000000..5e197390 --- /dev/null +++ b/examples/blending.py @@ -0,0 +1,96 @@ +"""An example demonstrating different blend modes. + +Unaltered, each channel of the volume is blended additively, resulting in transparency. + +By clicking on the volume, the blend mode will alternate to an opaque strategy. In this +case, fragments written by the nuclei channel will always be visible over fragments +written by the membranes channel (because its draw order is higher). +""" + +import cmap +import numpy as np + +import scenex as snx +import scenex.model +from scenex.app.events import Event, MousePressEvent +from scenex.model._transform import Transform +from scenex.utils import projections +from scenex.utils.controllers import OrbitController + +try: + from imageio.v2 import volread + + url = "https://gitlab.com/scikit-image/data/-/raw/2cdc5ce89b334d28f06a58c9f0ca21aa6992a5ba/cells3d.tif" + data = np.asarray(volread(url)).astype(np.uint16)[:, :, :, :] +except ImportError: + data = np.random.randint(0, 2, (3, 2, 3, 3)).astype(np.uint16) + +data1 = data[:, 0, :, :] +volume1 = snx.Volume( + data=data1, + cmap=cmap.Colormap("green"), + blending=scenex.model.BlendMode.ADDITIVE, + clims=(data1.min(), data1.max()), + opacity=0.7, + order=1, + name="Cell membranes", + interactive=True, +) +data2 = data[:, 1, :, :] +volume2 = snx.Volume( + data=data2, + blending=scenex.model.BlendMode.ADDITIVE, + cmap=cmap.Colormap("magenta"), + clims=(data2.min(), data2.max()), + opacity=0.7, + order=2, + name="Cell nuclei", + interactive=True, + transform=Transform().translated((0, 0, 30)), +) + +view = snx.View( + scene=snx.Scene( + children=[volume1, volume2], + interactive=True, + ), + camera=snx.Camera(interactive=True), +) + +blend_modes = list(scenex.model.BlendMode) + + +def change_blend_mode(event: Event, node: snx.Node) -> bool: + """Change the blend mode of a volume when it is clicked.""" + if isinstance(event, MousePressEvent): + idx = blend_modes.index(node.blending) + next_idx = (idx + 1) % len(blend_modes) + + print(f"Changing blend mode to {blend_modes[next_idx]}") + + volume1.blending = blend_modes[next_idx] + volume2.blending = blend_modes[next_idx] + return False + + +volume1.set_event_filter(change_blend_mode) + + +snx.use("vispy") +snx.show(view) + +# Orbit around the center of the volume +orbit_center = np.mean(np.asarray(view.scene.bounding_box), axis=0) + +# Place the camera along the x axis, looking at the orbit center +view.camera.transform = Transform().translated(orbit_center).translated((300, 0, 0)) +view.camera.look_at(orbit_center, up=(0, 0, 1)) +# Perspective projection for 3D +view.camera.projection = projections.perspective( + fov=70, + near=1, + far=1_000_000, # Just need something big +) +view.camera.set_event_filter(OrbitController(orbit_center)) + +snx.run() diff --git a/pyproject.toml b/pyproject.toml index 6a788aec..6615b8fe 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -53,7 +53,7 @@ pyqt = [ wx= [ "wxpython >=4.2.2", ] -pygfx = ["pygfx>=0.9.0,<0.13.0"] # FIXME 0.13.0 causes some problems on CI Windows that I cannot replicate locally +pygfx = ["pygfx>=0.13.0"] vispy = ["vispy>=0.15.0", "pyopengl"] imgui = [ # 1.6.3 breaks type checking, 1.92 not working with pygfx diff --git a/src/scenex/adaptors/_base.py b/src/scenex/adaptors/_base.py index 56a863c0..ee604342 100644 --- a/src/scenex/adaptors/_base.py +++ b/src/scenex/adaptors/_base.py @@ -95,6 +95,8 @@ def _snx_set_interactive(self, arg: bool, /) -> None: ... @abstractmethod def _snx_set_transform(self, arg: model.Transform, /) -> None: ... @abstractmethod + def _snx_set_blending(self, arg: model.BlendMode, /) -> None: ... + @abstractmethod def _snx_add_node(self, node: model.Node) -> None: ... @abstractmethod diff --git a/src/scenex/adaptors/_pygfx/_node.py b/src/scenex/adaptors/_pygfx/_node.py index 36eac47c..f901a90b 100644 --- a/src/scenex/adaptors/_pygfx/_node.py +++ b/src/scenex/adaptors/_pygfx/_node.py @@ -1,8 +1,10 @@ from __future__ import annotations import logging +import warnings from typing import TYPE_CHECKING, Generic, TypeVar, cast +from scenex import model from scenex.adaptors._base import NodeAdaptor, TNode from ._adaptor_registry import get_adaptor @@ -10,7 +12,6 @@ if TYPE_CHECKING: import pygfx - from scenex import model from scenex.model import Transform logger = logging.getLogger("scenex.adaptors.pygfx") @@ -18,6 +19,12 @@ TMat = TypeVar("TMat", bound="pygfx.Material") TGeo = TypeVar("TGeo", bound="pygfx.Geometry") +BLEND_MODES = { + model.BlendMode.OPAQUE: "solid", + model.BlendMode.ALPHA: "auto", + model.BlendMode.ADDITIVE: "add", +} + class Node(NodeAdaptor[TNode, TObj], Generic[TNode, TObj, TMat, TGeo]): """Node adaptor for pygfx Backend.""" @@ -60,6 +67,21 @@ def _snx_set_transform(self, arg: Transform) -> None: # pygfx uses a transposed matrix relative to the model self._pygfx_node.local.matrix = arg.root.T + def _snx_set_blending(self, arg: model.BlendMode) -> None: + material = self._pygfx_node.material + if material is None: + # FIXME this node is a scene + return + # pygfx only supports node blend modes for versions >=0.13 + if hasattr(material, "alpha_mode"): + material.alpha_mode = BLEND_MODES[arg] # pyright: ignore + else: + warnings.warn( + "Node blending not supported by this version of pygfx - ignoring", + RuntimeWarning, + stacklevel=2, + ) + def _snx_add_node(self, node: model.Node) -> None: # create if it doesn't exist adaptor = cast("Node", get_adaptor(node)) diff --git a/src/scenex/adaptors/_pygfx/_volume.py b/src/scenex/adaptors/_pygfx/_volume.py index 2217c309..f91fe512 100644 --- a/src/scenex/adaptors/_pygfx/_volume.py +++ b/src/scenex/adaptors/_pygfx/_volume.py @@ -68,6 +68,12 @@ def _snx_set_render_mode( elif self._material is not None: kwargs["interpolation"] = self._material.interpolation kwargs["clim"] = self._material.clim + kwargs["map"] = self._material.map + kwargs["gamma"] = self._material.gamma + kwargs["opacity"] = self._material.opacity + # alpha_mode parameter introduced in pygfx 0.13.0 + if hasattr(self._material, "alpha_mode"): + kwargs["alpha_mode"] = self._material.alpha_mode if data == "mip": self._material = pygfx.VolumeMipMaterial(**kwargs) diff --git a/src/scenex/adaptors/_vispy/_node.py b/src/scenex/adaptors/_vispy/_node.py index b12000e5..56131a99 100644 --- a/src/scenex/adaptors/_vispy/_node.py +++ b/src/scenex/adaptors/_vispy/_node.py @@ -5,17 +5,23 @@ import numpy as np import vispy.scene +from scenex import model from scenex.adaptors._base import NodeAdaptor, TNode from ._adaptor_registry import get_adaptor if TYPE_CHECKING: - from scenex import model from scenex.model import Transform TObj = TypeVar("TObj", bound="vispy.scene.Node") +BLEND_MODES = { + model.BlendMode.OPAQUE: "opaque", + model.BlendMode.ALPHA: "translucent", + model.BlendMode.ADDITIVE: "additive", +} + class Node(NodeAdaptor[TNode, TObj], Generic[TNode, TObj]): """Node adaptor for pygfx Backend.""" @@ -56,6 +62,14 @@ def _snx_set_transform(self, arg: Transform) -> None: np.asarray(arg) ) + def _snx_set_blending(self, arg: model.BlendMode) -> None: + if hasattr(self._vispy_node, "set_gl_state"): + if arg == model.BlendMode.OPAQUE: + # for opaque, we need to disable blending + self._vispy_node.set_gl_state(None, blend=False) # pyright: ignore + else: + self._vispy_node.set_gl_state(BLEND_MODES[arg]) # pyright: ignore + def _snx_add_node(self, node: model.Node) -> None: # create if it doesn't exist adaptor = cast("Node", get_adaptor(node)) diff --git a/src/scenex/model/__init__.py b/src/scenex/model/__init__.py index 0d0f12d8..8ba0a834 100644 --- a/src/scenex/model/__init__.py +++ b/src/scenex/model/__init__.py @@ -17,7 +17,7 @@ from ._layout import Layout from ._nodes.camera import Camera, CameraType from ._nodes.image import Image, InterpolationMode -from ._nodes.node import AnyNode, Node +from ._nodes.node import AnyNode, BlendMode, Node from ._nodes.points import Points, ScalingMode, SymbolName from ._nodes.scene import Scene from ._nodes.volume import RenderMode, Volume @@ -26,6 +26,7 @@ __all__ = [ "AnyNode", + "BlendMode", "Camera", "CameraType", "Canvas", diff --git a/src/scenex/model/_nodes/node.py b/src/scenex/model/_nodes/node.py index ba04c7ff..469e5002 100644 --- a/src/scenex/model/_nodes/node.py +++ b/src/scenex/model/_nodes/node.py @@ -2,6 +2,7 @@ import logging from collections.abc import Iterable, Iterator +from enum import Enum from typing import TYPE_CHECKING, Annotated, Any, ClassVar, TypeAlias, Union, cast import numpy as np @@ -58,6 +59,34 @@ class NodeKwargs(TypedDict, total=False): AABB: TypeAlias = tuple[tuple[float, float, float], tuple[float, float, float]] +class BlendMode(Enum): + """ + A set of available blending modes. + + Blending modes determine how the colors of rendered objects are combined with the + colors already present in the framebuffer. More practically, if two objects overlap + from the camera's perspective in the scene, the blending mode of the new object + determines how its colors are combined with those of the object previously rendered. + + Note that the draw order plays a crucial role in blending. + """ + + OPAQUE = "opaque" + """The object's color value, multiplied by its alpha value, overwrites the + background color. + """ + ALPHA = "alpha" + """ + The object's color is blended with the background using standard alpha compositing. + The resulting color is a weighted combination of the foreground and background, + where weights are determined by alpha values. + """ + ADDITIVE = "additive" + """The object's color value, multiplied by its alpha value, is added to the + background color. + """ + + class Node(EventedBase): """Base class for all nodes. Also a [`Container[Node]`][collections.abc.Container]. @@ -88,6 +117,10 @@ class Node(EventedBase): description="Transform that maps the local coordinate frame to the coordinate " "frame of the parent.", ) + blending: BlendMode = Field( + default=BlendMode.OPAQUE, + description="Describes how this node interacts with nodes behind it.", + ) _filter: Callable[[Event, Node], bool] | None = PrivateAttr(default=None) diff --git a/tests/adaptors/_pygfx/test_volume.py b/tests/adaptors/_pygfx/test_volume.py index b04c740a..2a03a2d3 100644 --- a/tests/adaptors/_pygfx/test_volume.py +++ b/tests/adaptors/_pygfx/test_volume.py @@ -1,12 +1,13 @@ from __future__ import annotations import numpy as np +import pygfx import pytest import scenex as snx import scenex.adaptors._pygfx as adaptors from scenex.adaptors._auto import get_adaptor_registry -from scenex.model._transform import Transform +from scenex.model import BlendMode, Transform @pytest.fixture @@ -58,3 +59,17 @@ def test_transform(volume: snx.Volume, adaptor: adaptors.Volume) -> None: bb = adaptor._pygfx_node.get_world_bounding_box() assert bb is not None assert np.array_equal(exp_bounds, bb) + + +@pytest.mark.skipif( + pygfx.version_info < (0, 13, 0), reason="Requires pygfx 0.13.0 or higher" +) +def test_blending(volume: snx.Volume, adaptor: adaptors.Volume) -> None: + volume.blending = BlendMode.ADDITIVE + assert adaptor._material.alpha_mode == "add" + + volume.blending = BlendMode.ALPHA + assert adaptor._material.alpha_mode == "auto" + + volume.blending = BlendMode.OPAQUE + assert adaptor._material.alpha_mode == "solid" diff --git a/tests/adaptors/_vispy/test_volume.py b/tests/adaptors/_vispy/test_volume.py index 93e3f636..c4fac6fe 100644 --- a/tests/adaptors/_vispy/test_volume.py +++ b/tests/adaptors/_vispy/test_volume.py @@ -8,7 +8,7 @@ import scenex as snx import scenex.adaptors._vispy as adaptors from scenex.adaptors._auto import get_adaptor_registry -from scenex.model._transform import Transform +from scenex.model import BlendMode, Transform if TYPE_CHECKING: from vispy.visuals import VolumeVisual @@ -65,6 +65,24 @@ def test_transform(volume: snx.Volume, adaptor: adaptors.Volume) -> None: assert np.array_equal(exp_bounds, bb) +def test_blending(volume: snx.Volume, adaptor: adaptors.Volume) -> None: + # Test blending modes + from unittest.mock import MagicMock + + # Note that we can't just get the gl state, so we should assert that the correct + # settings were set. + adaptor._vispy_node.set_gl_state = MagicMock() + + volume.blending = BlendMode.ADDITIVE + adaptor._vispy_node.set_gl_state.assert_called_with("additive") + + volume.blending = BlendMode.ADDITIVE + adaptor._vispy_node.set_gl_state.assert_called_with("translucent") + + volume.blending = BlendMode.OPAQUE + adaptor._vispy_node.set_gl_state.assert_called_with(None, blend=False) + + def _bounds(node: VolumeVisual) -> np.ndarray: bounds: np.ndarray = np.ndarray((2, 3), dtype=np.float32) # Get the bounds of the raw object... From 392cd019c24c00c93198ec52fa50194b5e790fa7 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 11 Sep 2025 16:50:37 -0500 Subject: [PATCH 089/120] Correct vispy test --- tests/adaptors/_vispy/test_volume.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/adaptors/_vispy/test_volume.py b/tests/adaptors/_vispy/test_volume.py index c4fac6fe..36ba196d 100644 --- a/tests/adaptors/_vispy/test_volume.py +++ b/tests/adaptors/_vispy/test_volume.py @@ -76,7 +76,7 @@ def test_blending(volume: snx.Volume, adaptor: adaptors.Volume) -> None: volume.blending = BlendMode.ADDITIVE adaptor._vispy_node.set_gl_state.assert_called_with("additive") - volume.blending = BlendMode.ADDITIVE + volume.blending = BlendMode.ALPHA adaptor._vispy_node.set_gl_state.assert_called_with("translucent") volume.blending = BlendMode.OPAQUE From 864b9924f6054798f8b2e3ef39c01bfccb78236f Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 11 Sep 2025 17:05:27 -0500 Subject: [PATCH 090/120] Reconstruct WgpuRenderer when changing canvas --- src/scenex/adaptors/_pygfx/_canvas.py | 3 +++ src/scenex/adaptors/_pygfx/_view.py | 18 ++++++++++-------- 2 files changed, 13 insertions(+), 8 deletions(-) diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index ac3f470d..a2fa799c 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -92,6 +92,9 @@ def _snx_add_view(self, view: model.View) -> None: return self._views.append(view) + view_adaptor = cast("View", get_adaptor(view)) + view_adaptor._set_pygfx_canvas(self._wgpu_canvas) + # FIXME: Allow customization x = 0.0 dx = float(self._wgpu_canvas.get_logical_size()[0]) / len(self._views) diff --git a/src/scenex/adaptors/_pygfx/_view.py b/src/scenex/adaptors/_pygfx/_view.py index 9a1dfb56..f3e74bec 100644 --- a/src/scenex/adaptors/_pygfx/_view.py +++ b/src/scenex/adaptors/_pygfx/_view.py @@ -15,7 +15,7 @@ from scenex import model - from . import _camera, _canvas, _scene + from . import _camera, _scene logger = logging.getLogger("scenex.adaptors.pygfx") @@ -31,17 +31,18 @@ class View(ViewAdaptor): def __init__(self, view: model.View, **backend_kwargs: Any) -> None: self._model = view - canvas_adaptor = cast("_canvas.Canvas", get_adaptor(view.canvas)) - wgpu_canvas = canvas_adaptor._wgpu_canvas - self._renderer = pygfx.renderers.WgpuRenderer(wgpu_canvas) - size = tuple(wgpu_canvas.get_logical_size()) - self._rect = (0, 0, float(size[0]), float(size[1])) + self._renderer: pygfx.renderers.WgpuRenderer | None = None + self._rect: tuple[float, float, float, float] | None = None self._snx_set_scene(view.scene) self._snx_set_camera(view.camera) # TODO: this is needed... but breaks tests until we deal with Layout better. # self._snx_set_background_color(view.layout.background_color) + def _set_pygfx_canvas(self, canvas: Any) -> None: + self._renderer = pygfx.renderers.WgpuRenderer(canvas) + self._rect = (0, 0, canvas.size[0], canvas.size[1]) + def _snx_get_native(self) -> pygfx.Viewport: return pygfx.Viewport(self._renderer) @@ -57,8 +58,9 @@ def _snx_set_camera(self, cam: model.Camera) -> None: self._pygfx_cam = self._cam_adaptor._pygfx_node def _draw(self) -> None: - self._renderer.render(self._pygfx_scene, self._pygfx_cam, rect=self._rect) - self._renderer.request_draw() + if self._renderer: + self._renderer.render(self._pygfx_scene, self._pygfx_cam, rect=self._rect) + self._renderer.request_draw() def _snx_set_position(self, arg: tuple[float, float]) -> None: logger.warning("View.set_position not implemented for pygfx") From 2f04c5609974398eb72f03808b205286647891dc Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 11 Sep 2025 19:21:36 -0500 Subject: [PATCH 091/120] Pygfx: Set renderer after It's common to create a View and then add it to a canvas. In that case, the old canvas may be garbage collected, causing a panic. We need a way to set up a new renderer on a different canvas. ...There is likely a better way to do it though :) --- src/scenex/adaptors/_pygfx/_canvas.py | 4 +++- src/scenex/adaptors/_pygfx/_view.py | 4 ++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index a2fa799c..208fee44 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -93,7 +93,9 @@ def _snx_add_view(self, view: model.View) -> None: self._views.append(view) view_adaptor = cast("View", get_adaptor(view)) - view_adaptor._set_pygfx_canvas(self._wgpu_canvas) + view_adaptor._set_pygfx_canvas( + self._wgpu_canvas, self._canvas.width, self._canvas.height + ) # FIXME: Allow customization x = 0.0 diff --git a/src/scenex/adaptors/_pygfx/_view.py b/src/scenex/adaptors/_pygfx/_view.py index f3e74bec..97d6ab5e 100644 --- a/src/scenex/adaptors/_pygfx/_view.py +++ b/src/scenex/adaptors/_pygfx/_view.py @@ -39,9 +39,9 @@ def __init__(self, view: model.View, **backend_kwargs: Any) -> None: # TODO: this is needed... but breaks tests until we deal with Layout better. # self._snx_set_background_color(view.layout.background_color) - def _set_pygfx_canvas(self, canvas: Any) -> None: + def _set_pygfx_canvas(self, canvas: Any, x: int, y: int) -> None: self._renderer = pygfx.renderers.WgpuRenderer(canvas) - self._rect = (0, 0, canvas.size[0], canvas.size[1]) + self._rect = (0, 0, x, y) def _snx_get_native(self) -> pygfx.Viewport: return pygfx.Viewport(self._renderer) From cef51b2d0b293b55b036a7c77e7d8929c46f001f Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 11 Sep 2025 19:23:32 -0500 Subject: [PATCH 092/120] look_at: Set the near plane much closer Previously, the near clipping plane was set to the distance from the closest point to the scene from the camera. This isn't good enough, because that distance can become smaller when the camera orbits, causing annoying clipping. A near plane of 1 is much better, although we may want to decrease it further later. --- src/scenex/utils/projections.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 5275621d..9b417541 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -138,6 +138,6 @@ def zoom_to_fit( # the camera must be a units away from the front plane (at z=(center[2] + d/2)) z_bound = center[2] + (d / 2) + a view.camera.transform = Transform().translated((center[0], center[1], z_bound)) - view.camera.projection = perspective(fov, a, far=1_000_000) + view.camera.projection = perspective(fov, near=1, far=1_000_000) else: raise TypeError(f"Unrecognized projection type: {type}") From 70b38ae3d3634c95439813616e54c5cd581f1786 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 11 Sep 2025 19:27:16 -0500 Subject: [PATCH 093/120] Add a note about zoom_to_fit --- src/scenex/utils/projections.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/scenex/utils/projections.py b/src/scenex/utils/projections.py index 9b417541..72e84633 100644 --- a/src/scenex/utils/projections.py +++ b/src/scenex/utils/projections.py @@ -138,6 +138,8 @@ def zoom_to_fit( # the camera must be a units away from the front plane (at z=(center[2] + d/2)) z_bound = center[2] + (d / 2) + a view.camera.transform = Transform().translated((center[0], center[1], z_bound)) + # Note that the near and far planes are set to reasonable defaults. + # TODO: Consider making these parameters view.camera.projection = perspective(fov, near=1, far=1_000_000) else: raise TypeError(f"Unrecognized projection type: {type}") From d322681903de0139051c7431a3750b4f7aaf3621 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 12 Sep 2025 14:49:21 -0500 Subject: [PATCH 094/120] Add canvas resizing --- src/scenex/adaptors/_pygfx/_view.py | 6 +++--- src/scenex/adaptors/_vispy/_canvas.py | 15 ++------------- src/scenex/adaptors/_vispy/_view.py | 12 +++++++++++- src/scenex/app/_jupyter.py | 8 ++++++++ src/scenex/app/_qt.py | 13 +++++++++++-- src/scenex/app/_wx.py | 12 ++++++++++++ src/scenex/app/events/__init__.py | 2 ++ src/scenex/app/events/_events.py | 8 ++++++++ src/scenex/model/_canvas.py | 27 ++++++++++++++++++++++++++- src/scenex/model/_layout.py | 12 ++++++++++++ src/scenex/util.py | 7 ++++++- tests/app/test_jupyter.py | 20 ++++++++++++++++++++ tests/app/test_qt.py | 20 +++++++++++++++++++- tests/app/test_wx.py | 18 +++++++++++++++--- tests/test_util.py | 8 ++++++++ 15 files changed, 163 insertions(+), 25 deletions(-) create mode 100644 tests/test_util.py diff --git a/src/scenex/adaptors/_pygfx/_view.py b/src/scenex/adaptors/_pygfx/_view.py index 97d6ab5e..816b34ef 100644 --- a/src/scenex/adaptors/_pygfx/_view.py +++ b/src/scenex/adaptors/_pygfx/_view.py @@ -32,7 +32,6 @@ class View(ViewAdaptor): def __init__(self, view: model.View, **backend_kwargs: Any) -> None: self._model = view self._renderer: pygfx.renderers.WgpuRenderer | None = None - self._rect: tuple[float, float, float, float] | None = None self._snx_set_scene(view.scene) self._snx_set_camera(view.camera) @@ -41,7 +40,6 @@ def __init__(self, view: model.View, **backend_kwargs: Any) -> None: def _set_pygfx_canvas(self, canvas: Any, x: int, y: int) -> None: self._renderer = pygfx.renderers.WgpuRenderer(canvas) - self._rect = (0, 0, x, y) def _snx_get_native(self) -> pygfx.Viewport: return pygfx.Viewport(self._renderer) @@ -59,7 +57,9 @@ def _snx_set_camera(self, cam: model.Camera) -> None: def _draw(self) -> None: if self._renderer: - self._renderer.render(self._pygfx_scene, self._pygfx_cam, rect=self._rect) + self._renderer.render( + self._pygfx_scene, self._pygfx_cam, rect=self._model.layout.content_rect + ) self._renderer.request_draw() def _snx_set_position(self, arg: tuple[float, float]) -> None: diff --git a/src/scenex/adaptors/_vispy/_canvas.py b/src/scenex/adaptors/_vispy/_canvas.py index b89da12a..da1753ba 100644 --- a/src/scenex/adaptors/_vispy/_canvas.py +++ b/src/scenex/adaptors/_vispy/_canvas.py @@ -60,26 +60,15 @@ def _draw(self) -> None: def _snx_add_view(self, view: model.View) -> None: if view in self._views: return - self._views.append(view) - # FIXME: Allow customization - x = 0.0 - dx = float(self._canvas.size[0]) / len(self._views) - - for view in self._views: - view.layout.x = x - view.layout.y = 0 - view.layout.width = dx - view.layout.height = self._canvas.size[1] - x += dx self._grid.add_widget(cast("View", get_adaptor(view))._vispy_viewbox) get_adaptor(view.camera)._set_view(view.layout.width, view.layout.height) # type:ignore def _snx_set_width(self, arg: int) -> None: - self._canvas.size = (self._canvas.size[0], arg) + self._canvas.size = (arg, self._canvas.size[1]) def _snx_set_height(self, arg: int) -> None: - self._canvas.size = (arg, self._canvas.size[1]) + self._canvas.size = (self._canvas.size[0], arg) def _snx_set_background_color(self, arg: Color | None) -> None: if arg is None: diff --git a/src/scenex/adaptors/_vispy/_view.py b/src/scenex/adaptors/_vispy/_view.py index b8fadbe7..7b3b0f53 100644 --- a/src/scenex/adaptors/_vispy/_view.py +++ b/src/scenex/adaptors/_vispy/_view.py @@ -6,9 +6,9 @@ import numpy as np import vispy import vispy.app -import vispy.color import vispy.scene import vispy.scene.subscene +from vispy.geometry import Rect from scenex.adaptors._base import ViewAdaptor @@ -33,11 +33,20 @@ class View(ViewAdaptor): _vispy_camera: vispy.scene.BaseCamera def __init__(self, view: model.View, **backend_kwargs: Any) -> None: + self._model = view self._vispy_viewbox = vispy.scene.ViewBox() self._snx_set_camera(view.camera) self._snx_set_scene(view.scene) + view.layout.events.all.connect(self._on_layout_changed) + + def _on_layout_changed(self, event: Any) -> None: + rect = Rect(self._model.layout.content_rect) + self._vispy_viewbox.rect = rect + self._vispy_viewbox.update() + self._cam_adaptor._set_view(rect.width, rect.height) + def _snx_get_native(self) -> Any: return self._vispy_viewbox @@ -73,6 +82,7 @@ def _snx_set_camera(self, cam: model.Camera) -> None: self._vispy_viewbox.camera = self._vispy_camera # Vispy camera transforms need knowledge of viewbox # (specifically, its size) + self._vispy_viewbox.update() self._cam_adaptor._set_view(*self._vispy_viewbox.size) def _draw(self) -> None: diff --git a/src/scenex/app/_jupyter.py b/src/scenex/app/_jupyter.py index 0f8e83f7..1a4c7825 100644 --- a/src/scenex/app/_jupyter.py +++ b/src/scenex/app/_jupyter.py @@ -14,6 +14,7 @@ MouseMoveEvent, MousePressEvent, MouseReleaseEvent, + ResizeEvent, WheelEvent, ) @@ -108,6 +109,13 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: angle_delta=(ev["dx"], -ev["dy"]), ) ) + elif etype == "resize": + filter._model_canvas.handle( + ResizeEvent( + width=ev["width"], + height=ev["height"], + ) + ) return _handle_event diff --git a/src/scenex/app/_qt.py b/src/scenex/app/_qt.py index a5edd36d..b12eba89 100644 --- a/src/scenex/app/_qt.py +++ b/src/scenex/app/_qt.py @@ -4,17 +4,18 @@ from typing import TYPE_CHECKING, Any, ClassVar, cast from qtpy.QtCore import QEvent, QObject, Qt, QTimer -from qtpy.QtGui import QMouseEvent, QWheelEvent +from qtpy.QtGui import QMouseEvent, QResizeEvent, QWheelEvent from qtpy.QtWidgets import QApplication, QWidget from scenex.app._auto import App -from scenex.app.events._events import ( +from scenex.app.events import ( EventFilter, MouseButton, MouseDoublePressEvent, MouseMoveEvent, MousePressEvent, MouseReleaseEvent, + ResizeEvent, WheelEvent, ) @@ -90,6 +91,7 @@ def _convert_event(self, qevent: QEvent) -> Event | None: world_ray=ray, buttons=btn, ) + elif isinstance(qevent, QWheelEvent): # TODO: Figure out the buttons pos = qevent.position() @@ -103,6 +105,13 @@ def _convert_event(self, qevent: QEvent) -> Event | None: angle_delta=(qevent.angleDelta().x(), qevent.angleDelta().y()), ) + elif isinstance(qevent, QResizeEvent): + size = qevent.size() + return ResizeEvent( + width=size.width(), + height=size.height(), + ) + return None diff --git a/src/scenex/app/_wx.py b/src/scenex/app/_wx.py index 815ac93f..d0344689 100644 --- a/src/scenex/app/_wx.py +++ b/src/scenex/app/_wx.py @@ -11,6 +11,7 @@ MouseMoveEvent, MousePressEvent, MouseReleaseEvent, + ResizeEvent, WheelEvent, ) @@ -41,6 +42,7 @@ def _install_events(self) -> None: self._canvas.Bind(wx.EVT_MIDDLE_UP, handler=self._on_mouse_up) self._canvas.Bind(wx.EVT_MOTION, handler=self._on_mouse_move) self._canvas.Bind(wx.EVT_MOUSEWHEEL, handler=self._on_wheel) + self._canvas.Bind(wx.EVT_SIZE, handler=self._on_resize) def uninstall(self) -> None: self._canvas.Unbind(wx.EVT_LEFT_DOWN) @@ -51,6 +53,16 @@ def uninstall(self) -> None: self._canvas.Unbind(wx.EVT_MIDDLE_UP) self._canvas.Unbind(wx.EVT_MOTION) self._canvas.Unbind(wx.EVT_MOUSEWHEEL) + self._canvas.Unbind(wx.EVT_SIZE) + + def _on_resize(self, event: wx.SizeEvent) -> None: + self._model_canvas.handle( + ResizeEvent( + width=event.GetSize().GetWidth(), + height=event.GetSize().GetHeight(), + ) + ) + event.Skip() def _on_mouse_down(self, event: wx.MouseEvent) -> None: btn = self._map_button(event) diff --git a/src/scenex/app/events/__init__.py b/src/scenex/app/events/__init__.py index 13aab424..d878fad1 100644 --- a/src/scenex/app/events/__init__.py +++ b/src/scenex/app/events/__init__.py @@ -10,6 +10,7 @@ MousePressEvent, MouseReleaseEvent, Ray, + ResizeEvent, WheelEvent, ) @@ -23,5 +24,6 @@ "MousePressEvent", "MouseReleaseEvent", "Ray", + "ResizeEvent", "WheelEvent", ] diff --git a/src/scenex/app/events/_events.py b/src/scenex/app/events/_events.py index 3c72c66b..6aa56854 100644 --- a/src/scenex/app/events/_events.py +++ b/src/scenex/app/events/_events.py @@ -37,6 +37,14 @@ def point_at_distance(self, distance: float) -> tuple[float, float, float]: return (x, y, z) +@dataclass +class ResizeEvent(Event): + """A window resize event.""" + + width: int # in pixels + height: int # in pixels + + @dataclass class MouseEvent(Event): """Base class for mouse interaction events.""" diff --git a/src/scenex/model/_canvas.py b/src/scenex/model/_canvas.py index 07219083..d40772fb 100644 --- a/src/scenex/model/_canvas.py +++ b/src/scenex/model/_canvas.py @@ -8,7 +8,7 @@ from cmap import Color from pydantic import ConfigDict, Field -from scenex.app.events._events import Event, MouseEvent, Ray +from scenex.app.events import Event, MouseEvent, Ray, ResizeEvent from ._base import EventedBase from ._evented_list import EventedList @@ -48,6 +48,28 @@ def model_post_init(self, __context: Any) -> None: self.views.item_changed.connect(self._on_view_changed) self.views.item_removed.connect(self._on_view_removed) + self.events.width.connect(self._recompute_layout) + self.events.height.connect(self._recompute_layout) + + self._recompute_layout() + + def _recompute_layout(self, dont_use: int | None = None) -> None: + if not len(self.views): + # Nothing to do + return + # The parameter is EITHER width or height - just use the model values instead + width, height = self.size + # FIXME: Allow customization + x = 0.0 + dx = float(width) / len(self.views) + + for view in self.views: + view.layout.x = x + view.layout.y = 0 + view.layout.width = dx + view.layout.height = height + x += dx + def _on_view_inserted(self, idx: int, view: View) -> None: view._canvas = self @@ -104,6 +126,8 @@ def handle(self, event: Event) -> bool: # No nodes in the view handled the event - pass it to the camera if not handled and view.camera.interactive: handled |= view.camera.filter_event(event, view.camera) + elif isinstance(event, ResizeEvent): + self.size = (event.width, event.height) return handled @staticmethod @@ -143,6 +167,7 @@ def to_world(self, canvas_pos: tuple[float, float]) -> Ray | None: x = pos_rel[0] / width * 2 - 1 y = -(pos_rel[1] / height * 2 - 1) pos_ndc = (x, y) + print(pos_ndc) # Note that the camera matrix is the matrix multiplication of: # * The projection matrix, which projects local space (the rectangular diff --git a/src/scenex/model/_layout.py b/src/scenex/model/_layout.py index 847a2d0a..78f15cbd 100644 --- a/src/scenex/model/_layout.py +++ b/src/scenex/model/_layout.py @@ -75,6 +75,18 @@ def size(self) -> tuple[float, float]: """Return the width, height of the layout as a tuple.""" return self.width, self.height + @computed_field # type: ignore [prop-decorator] + @property + def content_rect(self) -> tuple[float, float, float, float]: + """Return the (x, y, width, height) of the content area.""" + offset = self.padding + self.border_width + self.margin + return ( + self.x + offset, + self.y + offset, + self.width - 2 * offset, + self.height - 2 * offset, + ) + def __contains__(self, pos: tuple[float, float]) -> bool: offset = self.padding + self.border_width + self.margin diff --git a/src/scenex/util.py b/src/scenex/util.py index b33c4277..bdc6b6d4 100644 --- a/src/scenex/util.py +++ b/src/scenex/util.py @@ -120,7 +120,12 @@ def show( scene = model.Scene(children=[obj]) view = model.View(scene=scene) - canvas = model.Canvas(views=[view]) # pyright: ignore[reportArgumentType] + canvas = model.Canvas( + views=[view], # pyright: ignore[reportArgumentType] + # Respect the view size if provided + width=view.layout.width, # pyright: ignore[reportArgumentType] + height=view.layout.height, # pyright: ignore[reportArgumentType] + ) # pyright: ignore[reportArgumentType] canvas.visible = True reg = get_adaptor_registry(backend=backend) diff --git a/tests/app/test_jupyter.py b/tests/app/test_jupyter.py index 6c9d11b6..12ac3641 100644 --- a/tests/app/test_jupyter.py +++ b/tests/app/test_jupyter.py @@ -225,3 +225,23 @@ def test_wheel(evented_canvas: snx.Canvas) -> None: ), evented_canvas.views[0].camera, ) + + +def test_resize(evented_canvas: snx.Canvas) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + new_size = (400, 300) + assert evented_canvas.width != new_size[0] + assert evented_canvas.height != new_size[1] + native.handle_event( + { + "event_type": "resize", + "width": new_size[0], + "height": new_size[1], + } + ) + assert evented_canvas.width == new_size[0] + assert evented_canvas.height == new_size[1] diff --git a/tests/app/test_qt.py b/tests/app/test_qt.py index 34532446..e99b5896 100644 --- a/tests/app/test_qt.py +++ b/tests/app/test_qt.py @@ -8,7 +8,7 @@ import pytest import scenex as snx -from scenex.app import GuiFrontend, determine_app +from scenex.app import GuiFrontend, app, determine_app from scenex.app.events import ( MouseButton, MouseDoublePressEvent, @@ -27,6 +27,7 @@ if TYPE_CHECKING: from pytestqt.qtbot import QtBot # pyright: ignore[reportMissingImports] + from qtpy.QtWidgets import QWidget else: pytest.skip( "Skipping Qt tests as Qt will not be used in this environment", @@ -169,6 +170,23 @@ def test_mouse_double_click(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: ) +def test_resize(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + new_size = (400, 300) + assert evented_canvas.width != new_size[0] + assert evented_canvas.height != new_size[1] + # Note that the widget must be visible for a resize event to fire + cast("QWidget", native).setVisible(True) + cast("QWidget", native).resize(*new_size) + app().process_events() + assert evented_canvas.width == new_size[0] + assert evented_canvas.height == new_size[1] + + # TODO: Implement when Qt new enough # https://doc.qt.io/qt-6/qtest.html#wheelEvent # def test_wheel(evented_canvas: snx.Canvas): diff --git a/tests/app/test_wx.py b/tests/app/test_wx.py index 75e65a72..2c521972 100644 --- a/tests/app/test_wx.py +++ b/tests/app/test_wx.py @@ -46,9 +46,8 @@ def _processEvent(evt: wx.PyEventBinder, wdg: wx.Control, **kwargs: Any) -> None Note that wx.UIActionSimulator is an alternative to this approach. It seems to actually move the cursor around though, which is really annoying :) """ - if evt == wx.EVT_ACTIVATE: - active = kwargs.get("active", True) - ev = wx.ActivateEvent(eventType=evt.typeId, active=active) + if evt == wx.EVT_SIZE: + ev = wx.SizeEvent(kwargs["sz"], evt.typeId) else: ev = wx.MouseEvent(evt.typeId) ev.SetPosition(kwargs["pos"]) @@ -159,3 +158,16 @@ def test_mouse_wheel(evented_canvas: snx.Canvas) -> None: ), evented_canvas.views[0].camera, ) + + +def test_resize(evented_canvas: snx.Canvas) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() + mock = MagicMock() + evented_canvas.views[0].camera.set_event_filter(mock) + new_size = (400, 300) + # Note that the widget must be visible for a resize event to fire + _processEvent(wx.EVT_SIZE, native, sz=wx.Size(*new_size)) + assert evented_canvas.width == new_size[0] + assert evented_canvas.height == new_size[1] diff --git a/tests/test_util.py b/tests/test_util.py new file mode 100644 index 00000000..a2746802 --- /dev/null +++ b/tests/test_util.py @@ -0,0 +1,8 @@ +import scenex as snx + + +def test_show_canvas_size(basic_view: snx.View) -> None: + """Tests that show_canvas respects the size of the canvas.""" + canvas = snx.show(basic_view) + assert canvas.width == basic_view.layout.width + assert canvas.height == basic_view.layout.height From d1753bbf0614a8a76ca3547fefced90173b06263 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 12 Sep 2025 15:55:00 -0500 Subject: [PATCH 095/120] Add size HACK for pygfx+wx --- src/scenex/adaptors/_pygfx/_canvas.py | 29 +++++++++++++-------------- 1 file changed, 14 insertions(+), 15 deletions(-) diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index 208fee44..48838cbe 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -97,24 +97,23 @@ def _snx_add_view(self, view: model.View) -> None: self._wgpu_canvas, self._canvas.width, self._canvas.height ) - # FIXME: Allow customization - x = 0.0 - dx = float(self._wgpu_canvas.get_logical_size()[0]) / len(self._views) - - for view in self._views: - view.layout.x = x - view.layout.y = 0 - view.layout.width = dx - view.layout.height = self._wgpu_canvas.get_logical_size()[1] # type: ignore - x += dx - def _snx_set_width(self, arg: int) -> None: - _, height = cast("tuple[float, float]", self._wgpu_canvas.get_logical_size()) - self._wgpu_canvas.set_logical_size(arg, height) + width, height = cast( + "tuple[float, float]", self._wgpu_canvas.get_physical_size() + ) + # FIXME: For some reason, on wx the size has already been updated, and + # updating it again causes erratic resizing behavior + if width != arg: + self._wgpu_canvas.set_logical_size(arg, height) def _snx_set_height(self, arg: int) -> None: - width, _ = cast("tuple[float, float]", self._wgpu_canvas.get_logical_size()) - self._wgpu_canvas.set_logical_size(width, arg) + width, height = cast( + "tuple[float, float]", self._wgpu_canvas.get_physical_size() + ) + # FIXME: For some reason, on wx the size has already been updated, and + # updating it again causes erratic resizing behavior + if height != arg: + self._wgpu_canvas.set_logical_size(width, arg) def _snx_set_background_color(self, arg: Color | None) -> None: # not sure if pygfx has both a canavs and view background color... From 5807000a419d6fe60152e069b21220c315a67c1c Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 12 Sep 2025 16:49:25 -0500 Subject: [PATCH 096/120] Couple more pygfx fixes --- src/scenex/adaptors/_pygfx/_volume.py | 2 ++ src/scenex/adaptors/_vispy/_camera.py | 4 ++++ src/scenex/model/_canvas.py | 1 - 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/src/scenex/adaptors/_pygfx/_volume.py b/src/scenex/adaptors/_pygfx/_volume.py index f91fe512..f46ec842 100644 --- a/src/scenex/adaptors/_pygfx/_volume.py +++ b/src/scenex/adaptors/_pygfx/_volume.py @@ -56,6 +56,8 @@ def _create_texture(self, data: np.ndarray) -> pygfx.Texture: def _snx_set_data(self, data: ArrayLike) -> None: self._texture = self._create_texture(np.asanyarray(data)) self._geometry = pygfx.Geometry(grid=self._texture) + if hasattr(self, "_pygfx_node"): + self._pygfx_node.geometry = self._geometry def _snx_set_render_mode( self, diff --git a/src/scenex/adaptors/_vispy/_camera.py b/src/scenex/adaptors/_vispy/_camera.py index a1f72f59..f310de68 100644 --- a/src/scenex/adaptors/_vispy/_camera.py +++ b/src/scenex/adaptors/_vispy/_camera.py @@ -43,6 +43,10 @@ def __init__(self, camera: model.Camera, **backend_kwargs: Any) -> None: self._vispy_node = vispy.scene.BaseCamera() def _set_view(self, w: float, h: float) -> None: + # FIXME: For some reason, width can quickly become zero in NDV when switching + # channel mode... + if w == 0 or h == 0: + return # map [-1, -1] to [0, h] # map [1, 1] to [w, 0] self._from_NDC = Transform().translated((1, -1)).scaled((w / 2, -h / 2, 1)) diff --git a/src/scenex/model/_canvas.py b/src/scenex/model/_canvas.py index d40772fb..56ef168c 100644 --- a/src/scenex/model/_canvas.py +++ b/src/scenex/model/_canvas.py @@ -167,7 +167,6 @@ def to_world(self, canvas_pos: tuple[float, float]) -> Ray | None: x = pos_rel[0] / width * 2 - 1 y = -(pos_rel[1] / height * 2 - 1) pos_ndc = (x, y) - print(pos_ndc) # Note that the camera matrix is the matrix multiplication of: # * The projection matrix, which projects local space (the rectangular From bcd983f7e6f5903655cc2276b1081693da7a849b Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 12 Sep 2025 17:03:33 -0500 Subject: [PATCH 097/120] Add some view+canvas compatibility constraints The main thing to avoid here is a View layout larger than a canvas, as that can cause problems in Pygfx --- src/scenex/model/_canvas.py | 3 +++ tests/model/_nodes/test_canvas.py | 13 +++++++++++++ 2 files changed, 16 insertions(+) diff --git a/src/scenex/model/_canvas.py b/src/scenex/model/_canvas.py index 56ef168c..f220dd82 100644 --- a/src/scenex/model/_canvas.py +++ b/src/scenex/model/_canvas.py @@ -72,9 +72,11 @@ def _recompute_layout(self, dont_use: int | None = None) -> None: def _on_view_inserted(self, idx: int, view: View) -> None: view._canvas = self + self._recompute_layout() def _on_view_removed(self, idx: int, view: View) -> None: view._canvas = None + self._recompute_layout() def _on_view_changed( self, @@ -91,6 +93,7 @@ def _on_view_changed( new_view = [new_view] for view in new_view: view._canvas = self + self._recompute_layout() @property def size(self) -> tuple[int, int]: diff --git a/tests/model/_nodes/test_canvas.py b/tests/model/_nodes/test_canvas.py index d62ec9b9..2c051cb4 100644 --- a/tests/model/_nodes/test_canvas.py +++ b/tests/model/_nodes/test_canvas.py @@ -74,3 +74,16 @@ def test_to_world_projection() -> None: ray = canvas.to_world((0, 0)) assert ray == Ray(origin=(-0.5, 0.5, 0), direction=(0, 0, -1)) camera.projection = snx.Transform() + + +def test_canvas_layout() -> None: + """Tests adding an incompatible view to a canvas results in a logical scenario""" + # TODO: Is this actually the logical scenario? + canvas = snx.Canvas() + view = snx.View(scene=snx.Scene(children=[]), camera=snx.Camera()) + view.layout.width = canvas.width + 100 + view.layout.height = canvas.height + 100 + canvas.views.append(view) + + assert view.layout.width == canvas.width + assert view.layout.height == canvas.height From 6af6bdd8c9a945c31d7b89e93d017206c13d57bd Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 15 Sep 2025 14:54:54 -0500 Subject: [PATCH 098/120] Fix some resizing bugs Some airport fixes coming around from me using my laptop screen for once :) --- src/scenex/adaptors/_pygfx/_canvas.py | 4 ++-- src/scenex/adaptors/_pygfx/_view.py | 20 +++++++++++++++++--- src/scenex/model/_canvas.py | 1 + tests/app/test_qt.py | 1 + 4 files changed, 21 insertions(+), 5 deletions(-) diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index 48838cbe..be678547 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -99,7 +99,7 @@ def _snx_add_view(self, view: model.View) -> None: def _snx_set_width(self, arg: int) -> None: width, height = cast( - "tuple[float, float]", self._wgpu_canvas.get_physical_size() + "tuple[float, float]", self._wgpu_canvas.get_logical_size() ) # FIXME: For some reason, on wx the size has already been updated, and # updating it again causes erratic resizing behavior @@ -108,7 +108,7 @@ def _snx_set_width(self, arg: int) -> None: def _snx_set_height(self, arg: int) -> None: width, height = cast( - "tuple[float, float]", self._wgpu_canvas.get_physical_size() + "tuple[float, float]", self._wgpu_canvas.get_logical_size() ) # FIXME: For some reason, on wx the size has already been updated, and # updating it again causes erratic resizing behavior diff --git a/src/scenex/adaptors/_pygfx/_view.py b/src/scenex/adaptors/_pygfx/_view.py index 816b34ef..1147d14f 100644 --- a/src/scenex/adaptors/_pygfx/_view.py +++ b/src/scenex/adaptors/_pygfx/_view.py @@ -57,9 +57,23 @@ def _snx_set_camera(self, cam: model.Camera) -> None: def _draw(self) -> None: if self._renderer: - self._renderer.render( - self._pygfx_scene, self._pygfx_cam, rect=self._model.layout.content_rect - ) + rect = self._model.layout.content_rect + # FIXME: On Qt, for HiDPI screens, the logical screen size (the rect + # variable above) can, through rounding error during resizing, become + # slightly larger than the physical size, which causes pygfx to error. + # This code "fixes" it but I think we could do better...maybe upstream? + ratio = self._renderer.physical_size[1] / self._renderer.logical_size[1] # pyright:ignore + if rect[2] * ratio > self._renderer.physical_size[0]: + # content rect is too wide for the canvas - adjust width + new_width = int(self._renderer.physical_size[0] / ratio) + rect = (rect[0], rect[1], new_width, rect[3]) + if rect[3] * ratio > self._renderer.physical_size[1]: + # content rect is too tall for the canvas - adjust height + new_height = int(self._renderer.physical_size[1] / ratio) + rect = (rect[0], rect[1], rect[2], new_height) + # End FIXME + + self._renderer.render(self._pygfx_scene, self._pygfx_cam, rect=rect) self._renderer.request_draw() def _snx_set_position(self, arg: tuple[float, float]) -> None: diff --git a/src/scenex/model/_canvas.py b/src/scenex/model/_canvas.py index f220dd82..2ecb1937 100644 --- a/src/scenex/model/_canvas.py +++ b/src/scenex/model/_canvas.py @@ -130,6 +130,7 @@ def handle(self, event: Event) -> bool: if not handled and view.camera.interactive: handled |= view.camera.filter_event(event, view.camera) elif isinstance(event, ResizeEvent): + # TODO: How might some event filter tap into the resize? self.size = (event.width, event.height) return handled diff --git a/tests/app/test_qt.py b/tests/app/test_qt.py index e99b5896..e7bdee25 100644 --- a/tests/app/test_qt.py +++ b/tests/app/test_qt.py @@ -174,6 +174,7 @@ def test_resize(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: native = cast( "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] )._snx_get_native() + qtbot.add_widget(native) mock = MagicMock() evented_canvas.views[0].camera.set_event_filter(mock) new_size = (400, 300) From c3a938fe4328f495bc440aca578669f23a32e2ec Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 15 Sep 2025 15:23:03 -0500 Subject: [PATCH 099/120] Change linting back to ubuntu Let's just keep wx out of the CI linting... --- .github/workflows/ci.yml | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index fb76304e..48f491a4 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -22,8 +22,7 @@ jobs: - run: pipx run check-manifest lint: - # Avoid linting on ubuntu-latest since wx doesn't ship those wheels - runs-on: windows-latest + runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - uses: astral-sh/setup-uv@v6 From f2842b7fbbebde9b34264881b36fdf4a5cc033d8 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Mon, 15 Sep 2025 20:35:32 -0500 Subject: [PATCH 100/120] Remove wx from dev deps --- pyproject.toml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/pyproject.toml b/pyproject.toml index 6615b8fe..e42d3773 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -75,7 +75,7 @@ docs = [ dev = [ { include-group = "test" }, { include-group = "docs" }, - "scenex[pygfx,vispy,imgui,jupyter,pyqt,wx]", + "scenex[pygfx,vispy,imgui,jupyter,pyqt]", "imageio[tifffile] >=2.20", "ipython", "mypy", From 8cd763411d8f7dcd8a5bea61142e4be45adf099c Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 16 Sep 2025 11:12:33 -0700 Subject: [PATCH 101/120] Try out types-wxpython --- pyproject.toml | 1 + 1 file changed, 1 insertion(+) diff --git a/pyproject.toml b/pyproject.toml index e42d3773..231d8010 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -84,6 +84,7 @@ dev = [ "rich", "ruff", "pyright>=1.1.392", + "types-wxpython", ] [project.urls] From 28dcc4adb5fca01238779df01f99c5b34783b2db Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 16 Sep 2025 16:35:17 -0700 Subject: [PATCH 102/120] Let's try windows linting again? --- .github/workflows/ci.yml | 6 ++---- pyproject.toml | 3 +-- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 48f491a4..d326bbea 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -22,16 +22,14 @@ jobs: - run: pipx run check-manifest lint: - runs-on: ubuntu-latest + runs-on: windows-latest steps: - uses: actions/checkout@v4 - uses: astral-sh/setup-uv@v6 with: enable-cache: true python-version: "3.13" - - uses: tox-dev/action-pre-commit-uv@v1 - with: - extra_args: --all-files --verbose + - run: uvx pre-commit run --all-files --verbose test: name: test ${{ matrix.os }} py${{ matrix.python-version }} ${{ matrix.gfx }} ${{ matrix.canvas }} diff --git a/pyproject.toml b/pyproject.toml index 231d8010..ea63e00c 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -75,7 +75,7 @@ docs = [ dev = [ { include-group = "test" }, { include-group = "docs" }, - "scenex[pygfx,vispy,imgui,jupyter,pyqt]", + "scenex[pygfx,vispy,imgui,jupyter,pyqt, wx]", "imageio[tifffile] >=2.20", "ipython", "mypy", @@ -84,7 +84,6 @@ dev = [ "rich", "ruff", "pyright>=1.1.392", - "types-wxpython", ] [project.urls] From 6f06e5569173d18007155e94e7b8fa9bdd86168a Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 16 Sep 2025 17:29:57 -0700 Subject: [PATCH 103/120] Fix remaining linting error --- src/scenex/imgui/_controls.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/scenex/imgui/_controls.py b/src/scenex/imgui/_controls.py index c05b72ed..c571b013 100644 --- a/src/scenex/imgui/_controls.py +++ b/src/scenex/imgui/_controls.py @@ -50,6 +50,8 @@ def add_imgui_controls(view: View) -> None: raise NotImplementedError( "Imgui controls can currently only be added to a canvas backed by pygfx." ) + if not snx_view_adaptor._renderer: + raise RuntimeError("The pygfx renderer has not been initialized yet.") imgui_renderer = ImguiRenderer( device=snx_view_adaptor._renderer.device, From e1efa49e8a8a85c1da63603ebeb57210fbabae43 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 16 Sep 2025 17:30:58 -0700 Subject: [PATCH 104/120] Add note about why linting happens on Windows now --- .github/workflows/ci.yml | 1 + 1 file changed, 1 insertion(+) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index d326bbea..bac5f166 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -22,6 +22,7 @@ jobs: - run: pipx run check-manifest lint: + # We lint on Windows so we can lint wx code. runs-on: windows-latest steps: - uses: actions/checkout@v4 From bf924e9751148292a77b455963d8736a4c6839ed Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 17 Sep 2025 09:17:22 -0700 Subject: [PATCH 105/120] Skip windows+pygfx I just want the tests passing man --- .github/workflows/ci.yml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index bac5f166..89ab6dec 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -54,6 +54,11 @@ jobs: - os: macos-latest canvas: wx python-version: "3.10" + # FIXME: On CI: AttributeError: 'Shared' object has no attribute '_device'. Did you mean: 'device'? + # Related to pygfx v0.13.0 + # Tests pass locally + - os: windows-latest + gfx: pygfx include: - python-version: "3.11" gfx: pygfx From d64c23e2316cb8c45a6b45cb1aa8362b0af71698 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 17 Sep 2025 11:54:28 -0700 Subject: [PATCH 106/120] Small fixes to wx test? --- tests/app/test_wx.py | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/tests/app/test_wx.py b/tests/app/test_wx.py index 2c521972..1f08ea70 100644 --- a/tests/app/test_wx.py +++ b/tests/app/test_wx.py @@ -46,7 +46,14 @@ def _processEvent(evt: wx.PyEventBinder, wdg: wx.Control, **kwargs: Any) -> None Note that wx.UIActionSimulator is an alternative to this approach. It seems to actually move the cursor around though, which is really annoying :) """ + evtLoop = wx.App.Get().GetTraits().CreateEventLoop() + wx.EventLoopActivator(evtLoop) if evt == wx.EVT_SIZE: + if not wdg.IsShown(): + wdg.Show(True) + + wx.MilliSleep(50) + evtLoop.YieldFor(wx.EVT_CATEGORY_ALL) # pyright: ignore[reportAttributeAccessIssue] ev = wx.SizeEvent(kwargs["sz"], evt.typeId) else: ev = wx.MouseEvent(evt.typeId) @@ -58,10 +65,7 @@ def _processEvent(evt: wx.PyEventBinder, wdg: wx.Control, **kwargs: Any) -> None wx.PostEvent(wdg.GetEventHandler(), ev) # Borrowed from: # https://github.com/wxWidgets/Phoenix/blob/master/unittests/wtc.py#L41 - wdg.Show(True) wx.MilliSleep(50) - evtLoop = wx.App.Get().GetTraits().CreateEventLoop() - wx.EventLoopActivator(evtLoop) evtLoop.YieldFor(wx.EVT_CATEGORY_ALL) # pyright: ignore[reportAttributeAccessIssue] From d46ff9b118ea9ebdd7194ba4fea1229873aba0f8 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 17 Sep 2025 11:57:17 -0700 Subject: [PATCH 107/120] Add a block_events to the app Currently being hit by not having this with wxPython --- src/scenex/adaptors/_pygfx/_canvas.py | 6 ++++-- src/scenex/app/_auto.py | 6 ++++++ src/scenex/app/_jupyter.py | 14 +++++++++++++- src/scenex/app/_qt.py | 10 +++++++++- src/scenex/app/_wx.py | 9 ++++++++- 5 files changed, 40 insertions(+), 5 deletions(-) diff --git a/src/scenex/adaptors/_pygfx/_canvas.py b/src/scenex/adaptors/_pygfx/_canvas.py index be678547..a83d5a2e 100644 --- a/src/scenex/adaptors/_pygfx/_canvas.py +++ b/src/scenex/adaptors/_pygfx/_canvas.py @@ -104,7 +104,8 @@ def _snx_set_width(self, arg: int) -> None: # FIXME: For some reason, on wx the size has already been updated, and # updating it again causes erratic resizing behavior if width != arg: - self._wgpu_canvas.set_logical_size(arg, height) + with app().block_events(self._snx_get_native()): + self._wgpu_canvas.set_logical_size(arg, height) def _snx_set_height(self, arg: int) -> None: width, height = cast( @@ -113,7 +114,8 @@ def _snx_set_height(self, arg: int) -> None: # FIXME: For some reason, on wx the size has already been updated, and # updating it again causes erratic resizing behavior if height != arg: - self._wgpu_canvas.set_logical_size(width, arg) + with app().block_events(self._snx_get_native()): + self._wgpu_canvas.set_logical_size(width, arg) def _snx_set_background_color(self, arg: Color | None) -> None: # not sure if pygfx has both a canavs and view background color... diff --git a/src/scenex/app/_auto.py b/src/scenex/app/_auto.py index c1727096..80cb7887 100644 --- a/src/scenex/app/_auto.py +++ b/src/scenex/app/_auto.py @@ -3,6 +3,7 @@ import importlib import os import sys +from contextlib import contextmanager from enum import Enum from typing import TYPE_CHECKING, cast @@ -78,6 +79,11 @@ def call_later(self, msec: int, func: Callable[[], None]) -> None: """Call `func` after `msec` milliseconds.""" raise NotImplementedError("Must be implemented by subclasses.") + @contextmanager + def block_events(self, window: Any) -> Iterator[None]: + """Context manager to block events for a window.""" + raise NotImplementedError("Must be implemented by subclasses.") + def _running_apps() -> Iterator[GuiFrontend]: """Return an iterator of running GUI applications.""" diff --git a/src/scenex/app/_jupyter.py b/src/scenex/app/_jupyter.py index 1a4c7825..873c0270 100644 --- a/src/scenex/app/_jupyter.py +++ b/src/scenex/app/_jupyter.py @@ -1,5 +1,6 @@ from __future__ import annotations +from contextlib import contextmanager from types import MethodType from typing import TYPE_CHECKING, Any, cast @@ -19,7 +20,7 @@ ) if TYPE_CHECKING: - from collections.abc import Callable + from collections.abc import Callable, Iterator from scenex import Canvas from scenex.adaptors._base import CanvasAdaptor @@ -189,3 +190,14 @@ def call_later(self, msec: int, func: Callable[[], None]) -> None: from threading import Timer Timer(msec / 1000, func).start() + + @contextmanager + def block_events(self, window: Any) -> Iterator[None]: + """Context manager to block events for a window.""" + if hasattr(window, "handle_event"): + old = window.handle_event + window.handle_event = lambda *args, **kwargs: None + yield + window.handle_event = old + else: + yield diff --git a/src/scenex/app/_qt.py b/src/scenex/app/_qt.py index b12eba89..3d741195 100644 --- a/src/scenex/app/_qt.py +++ b/src/scenex/app/_qt.py @@ -1,11 +1,13 @@ from __future__ import annotations import sys +from contextlib import contextmanager from typing import TYPE_CHECKING, Any, ClassVar, cast from qtpy.QtCore import QEvent, QObject, Qt, QTimer from qtpy.QtGui import QMouseEvent, QResizeEvent, QWheelEvent from qtpy.QtWidgets import QApplication, QWidget +from superqt.utils import signals_blocked from scenex.app._auto import App from scenex.app.events import ( @@ -20,7 +22,7 @@ ) if TYPE_CHECKING: - from collections.abc import Callable + from collections.abc import Callable, Iterator from typing import Any from scenex import Canvas @@ -160,3 +162,9 @@ def process_events(self) -> None: def call_later(self, msec: int, func: Callable[[], None]) -> None: """Call `func` after `msec` milliseconds.""" QTimer.singleShot(msec, Qt.TimerType.PreciseTimer, func) + + @contextmanager + def block_events(self, window: Any) -> Iterator[None]: + """Context manager to block events for a window.""" + with signals_blocked(window): + yield diff --git a/src/scenex/app/_wx.py b/src/scenex/app/_wx.py index d0344689..dcf0f9f4 100644 --- a/src/scenex/app/_wx.py +++ b/src/scenex/app/_wx.py @@ -1,5 +1,6 @@ from __future__ import annotations +from contextlib import contextmanager from typing import TYPE_CHECKING, Any import wx @@ -16,7 +17,7 @@ ) if TYPE_CHECKING: - from collections.abc import Callable + from collections.abc import Callable, Iterator from scenex import Canvas from scenex.adaptors._base import CanvasAdaptor @@ -166,3 +167,9 @@ def process_events(self) -> None: def call_later(self, msec: int, func: Callable[[], None]) -> None: """Call `func` after `msec` milliseconds.""" wx.CallLater(msec, func) + + @contextmanager + def block_events(self, window: Any) -> Iterator[None]: + """Context manager to block events for a window.""" + with wx.EventBlocker(window): + yield From 22f7ad2545140ba400883e7fc085e3c0efec97fa Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 17 Sep 2025 12:13:06 -0700 Subject: [PATCH 108/120] Remove glfw event filter --- src/scenex/app/_glfw.py | 148 ---------------------------------------- 1 file changed, 148 deletions(-) delete mode 100644 src/scenex/app/_glfw.py diff --git a/src/scenex/app/_glfw.py b/src/scenex/app/_glfw.py deleted file mode 100644 index be5f7b91..00000000 --- a/src/scenex/app/_glfw.py +++ /dev/null @@ -1,148 +0,0 @@ -from __future__ import annotations - -from typing import TYPE_CHECKING - -import glfw - -from scenex.app._auto import App -from scenex.app.events import ( - EventFilter, - MouseButton, - MouseMoveEvent, - MousePressEvent, - MouseReleaseEvent, - WheelEvent, -) - -if TYPE_CHECKING: - from typing import Any - - from scenex import Canvas - from scenex.adaptors._base import CanvasAdaptor - -BUTTONMAP = { - glfw.MOUSE_BUTTON_LEFT: MouseButton.LEFT, - glfw.MOUSE_BUTTON_RIGHT: MouseButton.RIGHT, - glfw.MOUSE_BUTTON_MIDDLE: MouseButton.MIDDLE, -} - - -class GlfwEventFilter(EventFilter): - def __init__(self, canvas: Any, model_canvas: Canvas) -> None: - self._canvas = model_canvas - self._active_button: MouseButton = MouseButton.NONE - self._window_id = self._guess_id(canvas) - # TODO: Maybe save the old callbacks? - glfw.set_cursor_pos_callback(self._window_id, self._cursor_pos_callback) - glfw.set_cursor_enter_callback( - self._window_id, self._cursor_enter_leave_callback - ) - glfw.set_mouse_button_callback(self._window_id, self._mouse_button_callback) - glfw.set_scroll_callback(self._window_id, self._mouse_scroll_callback) - self.pos = (0, 0) - - def _guess_id(self, canvas: Any) -> Any: - # vispy - if window := getattr(canvas, "_id", None): - return window - # rendercanvas - if window := getattr(canvas, "_window", None): - return window - - def uninstall(self) -> None: - raise NotImplementedError( - "Uninstalling GLFW event filters is not yet supported." - ) - - def _cursor_pos_callback(self, window: Any, xpos: float, ypos: float) -> None: - """Handle cursor position events.""" - canvas_pos = (xpos, ypos) - if ray := self._canvas.to_world(canvas_pos): - self._canvas.handle( - MouseMoveEvent( - canvas_pos=canvas_pos, - world_ray=ray, - buttons=self._active_button, - ) - ) - - def _cursor_enter_leave_callback(self, window: Any, entered: int) -> None: - """Handle enter/leave events.""" - if entered: - # entered window - pass - else: - # left window - pass - - def _mouse_button_callback( - self, window: Any, button: int, action: int, mods: int - ) -> None: - pos = glfw.get_cursor_pos(window) - if not (ray := self._canvas.to_world(pos)): - return - - # Mouse click event - if button in BUTTONMAP: - if action == glfw.PRESS: - self._active_button |= BUTTONMAP[button] - self._canvas.handle( - MousePressEvent( - canvas_pos=pos, - world_ray=ray, - buttons=self._active_button, - ) - ) - elif action == glfw.RELEASE: - self._active_button &= ~BUTTONMAP[button] - self._canvas.handle( - MouseReleaseEvent( - canvas_pos=pos, - world_ray=ray, - buttons=self._active_button, - ) - ) - - def _mouse_scroll_callback( - self, window: Any, xoffset: float, yoffset: float - ) -> None: - pos = glfw.get_cursor_pos(window) - if not (ray := self._canvas.to_world(pos)): - return - - # Mouse wheel event - self._canvas.handle( - WheelEvent( - canvas_pos=pos, - world_ray=ray, - buttons=self._active_button, - # Rendercanvas uses 100x and that works nice :) - angle_delta=(xoffset * 100, yoffset * 100), - ) - ) - - -class GlfwAppWrap(App): - """Provider for GLFW.""" - - def create_app(self) -> Any: - glfw.init() - # Nothing really to return here... - return None - - def run(self) -> None: - """Run the GLFW application.""" - # TODO - raise NotImplementedError( - "GLFW event loop not implemented yet. In the meantime, " - "Uninstall GLFW and run another canvas framework." - ) - - def install_event_filter(self, canvas: Any, model_canvas: Canvas) -> EventFilter: - return GlfwEventFilter(canvas, model_canvas) - - def show(self, canvas: CanvasAdaptor, visible: bool) -> None: - if visible: - glfw.show_window(canvas._snx_get_native()) - else: - glfw.hide_window(canvas._snx_get_native()) From 5b6af06225d9b65f9bfd5aa6bcdc68551970cd2a Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 19 Sep 2025 09:38:40 -0500 Subject: [PATCH 109/120] Put an event filter on the view This is a clean solution for implementing "on-leave" behavior. In NDV's case, it's needed to clear the hover info when the cursor leaves the image. --- examples/event_filters.py | 41 ++++++++++++--------- src/scenex/app/events/_events.py | 21 ++++++++++- src/scenex/model/_canvas.py | 15 ++++---- src/scenex/model/_view.py | 24 +++++++++++++ tests/model/_nodes/test_view.py | 61 ++++++++++++++++++++++++++++++++ 5 files changed, 137 insertions(+), 25 deletions(-) create mode 100644 tests/model/_nodes/test_view.py diff --git a/examples/event_filters.py b/examples/event_filters.py index cac2d029..6f9103db 100644 --- a/examples/event_filters.py +++ b/examples/event_filters.py @@ -2,7 +2,7 @@ import numpy as np import scenex as snx -from scenex.app.events import Event, MouseEvent +from scenex.app.events import Event, MouseMoveEvent img = snx.Image( data=np.zeros((200, 200)).astype(np.uint8), @@ -15,26 +15,33 @@ view = snx.View(scene=snx.Scene(children=[img])) -def _img_filter(event: Event, node: snx.Node) -> bool: +def _view_filter(event: Event) -> bool: """Example event drawing a square that reacts to the cursor.""" - # TODO: How might we remove the square when the mouse leaves the image? - - if isinstance(event, MouseEvent) and isinstance(node, snx.Image): - data = np.zeros((200, 200), dtype=np.uint8) - x = int(event.world_ray.origin[0]) - min_x = max(0, x - 5) - max_x = min(data.shape[0], x + 5) - - y = int(event.world_ray.origin[1]) - min_y = max(0, y - 5) - max_y = min(data.shape[1], y + 5) - - data[min_x:max_x, min_y:max_y] = 255 - node.data = data + if isinstance(event, MouseMoveEvent): + intersections = event.world_ray.intersections(view.scene) + if not intersections: + # Clear the image if the mouse is not over it + img.data = np.zeros((200, 200), dtype=np.uint8) + return True + for node, distance in intersections: + if not isinstance(node, snx.Image): + continue + intersection = event.world_ray.point_at_distance(distance) + data = np.zeros((200, 200), dtype=np.uint8) + x = int(intersection[0]) + min_x = max(0, x - 5) + max_x = min(data.shape[0], x + 5) + + y = int(intersection[1]) + min_y = max(0, y - 5) + max_y = min(data.shape[1], y + 5) + + data[min_x:max_x, min_y:max_y] = 255 + node.data = data return True -img.set_event_filter(_img_filter) +view.set_event_filter(_view_filter) snx.show(view) snx.run() diff --git a/src/scenex/app/events/_events.py b/src/scenex/app/events/_events.py index 6aa56854..d45131b8 100644 --- a/src/scenex/app/events/_events.py +++ b/src/scenex/app/events/_events.py @@ -2,7 +2,10 @@ from dataclasses import dataclass from enum import IntFlag, auto -from typing import NamedTuple +from typing import TYPE_CHECKING, NamedTuple, TypeAlias + +if TYPE_CHECKING: + from scenex import Node # Note that scenex follows the inheritance pattern for event subtypes. @@ -24,6 +27,9 @@ class MouseButton(IntFlag): RIGHT = auto() +Intersection: TypeAlias = tuple["Node", float] + + class Ray(NamedTuple): """A ray passing through the world.""" @@ -36,6 +42,19 @@ def point_at_distance(self, distance: float) -> tuple[float, float, float]: z = self.origin[2] + self.direction[2] * distance return (x, y, z) + def intersections(self, graph: Node) -> list[Intersection]: + """ + Find all intersections of this ray with the given scene graph. + + Returns a list of (node, distance) tuples, sorted by distance. + """ + through: list[Intersection] = [] + for child in graph.children: + if (d := child.passes_through(self)) is not None: + through.append((child, d)) + through.extend(self.intersections(child)) + return sorted(through, key=lambda inter: inter[1]) + @dataclass class ResizeEvent(Event): diff --git a/src/scenex/model/_canvas.py b/src/scenex/model/_canvas.py index 2ecb1937..83d5af3c 100644 --- a/src/scenex/model/_canvas.py +++ b/src/scenex/model/_canvas.py @@ -116,18 +116,19 @@ def handle(self, event: Event) -> bool: handled = False if isinstance(event, MouseEvent): if view := self._containing_view(event.canvas_pos): - through: list[tuple[Node, float]] = [] - for child in view.scene.children: - if (d := child.passes_through(event.world_ray)) is not None: - through.append((child, d)) + # Give the view a chance to observe the result + if view.filter_event(event): + return True + intersections = event.world_ray.intersections(view.scene) # FIXME: Consider only reporting the first? # Or do we only report until we hit a node with opacity=1? - for node, _depth in sorted(through, key=lambda e: e[1]): + for node, _distance in intersections: # Filter through parent scenes to child - handled |= Canvas._filter_through(event, node, node) + if Canvas._filter_through(event, node, node): + return True # No nodes in the view handled the event - pass it to the camera - if not handled and view.camera.interactive: + if view.camera.interactive: handled |= view.camera.filter_event(event, view.camera) elif isinstance(event, ResizeEvent): # TODO: How might some event filter tap into the resize? diff --git a/src/scenex/model/_view.py b/src/scenex/model/_view.py index 3430623a..9d5feadb 100644 --- a/src/scenex/model/_view.py +++ b/src/scenex/model/_view.py @@ -13,9 +13,12 @@ from ._nodes.scene import Scene if TYPE_CHECKING: + from collections.abc import Callable + import numpy as np from scenex.adaptors._base import ViewAdaptor + from scenex.app.events import Event from ._canvas import Canvas @@ -71,3 +74,24 @@ def render(self) -> np.ndarray: if adaptors := self._get_adaptors(): return cast("ViewAdaptor", adaptors[0])._snx_render() raise RuntimeError("No adaptor found for View.") + + _filter: Callable[[Event], bool] | None = PrivateAttr(default=None) + + def set_event_filter( + self, callable: Callable[[Event], bool] | None + ) -> Callable[[Event], bool] | None: + old, self._filter = self._filter, callable + return old + + def filter_event(self, event: Event) -> bool: + """ + Filters the event. + + This method allows the larger view to react to events that: + 1. Require summarization of multiple smaller event responses. + 2. Could not be picked up by a node (e.g. mouse leaving an image). + + Note the name has parity with Node.filter_event, but there's much filtering + going on. + """ + return self._filter(event) if self._filter else False diff --git a/tests/model/_nodes/test_view.py b/tests/model/_nodes/test_view.py new file mode 100644 index 00000000..f5d96ac6 --- /dev/null +++ b/tests/model/_nodes/test_view.py @@ -0,0 +1,61 @@ +from __future__ import annotations + +from unittest.mock import MagicMock + +import numpy as np + +import scenex as snx +from scenex.app.events import MouseButton, MouseMoveEvent +from scenex.utils import projections + + +def test_events() -> None: + # Create a view with an image + img = snx.Image(data=np.ones((10, 10), dtype=np.uint8), interactive=True) + img_filter = MagicMock() + img.set_event_filter(img_filter) + + view = snx.View(scene=snx.Scene(children=[img])) + view_filter = MagicMock() + view_filter.return_value = False + view.set_event_filter(view_filter) + + # Set up the camera + # Such that the image is in the top right quadrant + view.camera.transform = snx.Transform().translated((-0.5, -0.5)) + view.camera.projection = projections.orthographic(1, 1, 1) + + # Put it on a canvas + canvas = snx.Canvas(width=int(view.layout.width), height=int(view.layout.height)) + canvas.views.append(view) + + # Mouse over that image in the top right corner + canvas_pos = (view.layout.width, 0) + world_ray = canvas.to_world(canvas_pos) + assert world_ray is not None + event = MouseMoveEvent( + canvas_pos=canvas_pos, world_ray=world_ray, buttons=MouseButton.NONE + ) + + # And show both the view and the image saw the event + canvas.handle(event) + view_filter.assert_called_once_with(event) + img_filter.assert_called_once_with(event, img) + + # Reset the mocks + img_filter.reset_mock() + view_filter.reset_mock() + + # Mouse over empty space in the top left corner + canvas_pos = (0, 0) + world_ray = canvas.to_world(canvas_pos) + assert world_ray is not None + event = MouseMoveEvent( + canvas_pos=canvas_pos, world_ray=world_ray, buttons=MouseButton.NONE + ) + + # And show that the image did not see the event + # but that the view still saw the event + canvas.handle(event) + img_filter.assert_not_called() + view_filter.assert_called_once_with(event) From 71a57609ff93a4e843168f7e6fded8adb6524cd4 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 25 Sep 2025 12:23:12 -0500 Subject: [PATCH 110/120] adjust origin in passes_through scenex image/volume nodes have pixel centers at integer coordinates. Our math needs to reflect that --- src/scenex/model/_nodes/image.py | 3 ++- src/scenex/model/_nodes/volume.py | 5 +++-- tests/model/_nodes/test_image.py | 4 ++++ tests/model/_nodes/test_volume.py | 16 ++++++++++++++++ 4 files changed, 25 insertions(+), 3 deletions(-) diff --git a/src/scenex/model/_nodes/image.py b/src/scenex/model/_nodes/image.py index 9a513de4..55113fb5 100644 --- a/src/scenex/model/_nodes/image.py +++ b/src/scenex/model/_nodes/image.py @@ -51,7 +51,8 @@ def bounding_box(self) -> AABB: return (tuple(mi), tuple(ma)) # type: ignore def passes_through(self, ray: Ray) -> float | None: - origin = self.transform.map((0, 0, 0, 1))[:3] + mi, _ma = self.bounding_box + origin = self.transform.map(mi)[:3] u = self.transform.map((self.data.shape[0], 0, 0, 0))[:3] v = self.transform.map((0, self.data.shape[1], 0, 0))[:3] return _passes_through_parallelogram(ray, origin, u, v) diff --git a/src/scenex/model/_nodes/volume.py b/src/scenex/model/_nodes/volume.py index 849423fa..9de84e90 100644 --- a/src/scenex/model/_nodes/volume.py +++ b/src/scenex/model/_nodes/volume.py @@ -31,13 +31,14 @@ def bounding_box(self) -> AABB: def passes_through(self, ray: Ray) -> float | None: # The ray passes through our volume if it passes through any of the six faces + mi, ma = self.bounding_box d, w, h = self.data.shape # We can describe each face using a parallelogram using: # A point for the Top, Left, and Front faces - tlf = self.transform.map((0, 0, 0, 1))[:3] + tlf = self.transform.map((mi[0], mi[1], mi[2], 1))[:3] # Or a point for the Bottom, Right, and Back faces - brb = self.transform.map((w, h, d, 1))[:3] + brb = self.transform.map((ma[0], ma[1], ma[2], 1))[:3] # As well as vectors describing the three edges eminating from tlf u = self.transform.map((w, 0, 0, 0))[:3] v = self.transform.map((0, h, 0, 0))[:3] diff --git a/tests/model/_nodes/test_image.py b/tests/model/_nodes/test_image.py index 8dd068ee..c06f2cec 100644 --- a/tests/model/_nodes/test_image.py +++ b/tests/model/_nodes/test_image.py @@ -28,6 +28,10 @@ def test_passes_through(image: Image) -> None: ray = Ray(origin=(50, 50, 1), direction=(0, 0, -1)) assert image.passes_through(ray) == 1 + # Check a ray that grazes the edge of the image + ray = Ray(origin=(-0.5, 0, 1), direction=(0, 0, -1)) + assert image.passes_through(ray) == 1 + # Check a ray that does not pass through the image ray = Ray(origin=(-50, -50, 1), direction=(0, 0, -1)) assert image.passes_through(ray) is None diff --git a/tests/model/_nodes/test_volume.py b/tests/model/_nodes/test_volume.py index 90835a59..9f75729b 100644 --- a/tests/model/_nodes/test_volume.py +++ b/tests/model/_nodes/test_volume.py @@ -2,6 +2,7 @@ import pytest import scenex as snx +from scenex.app.events import Ray @pytest.fixture @@ -15,3 +16,18 @@ def test_bounding_box(volume: snx.Volume) -> None: # Note that the volume has 60 z-slices. But depth comes last in the bounding box! exp_bounding_box = np.asarray(((-0.5, -0.5, -0.5), (99.5, 99.5, 59.5))) assert np.array_equal(exp_bounding_box, volume.bounding_box) + + +def test_passes_through(volume: snx.Volume) -> None: + # Check a ray that passes through the volume + ray = Ray(origin=(50, 50, -1), direction=(0, 0, 1)) + # Note that it intersects at -0.5 because pixel centers are at integer coordinates + assert volume.passes_through(ray) == 0.5 + + # Check a ray that grazes the edge of the volume + ray = Ray(origin=(-0.5, 0, -1), direction=(0, 0, 1)) + assert volume.passes_through(ray) == 0.5 + + # Check a ray that does not pass through the volume + ray = Ray(origin=(-50, -50, -1), direction=(0, 0, 1)) + assert volume.passes_through(ray) is None From c5603ec22f163d6213c4a691a5294d8539b04891 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 25 Sep 2025 15:08:15 -0500 Subject: [PATCH 111/120] Open right edge of image intersections Tried my best to explain via comments why I think it's the right choice --- src/scenex/model/_nodes/image.py | 18 ++++++++++++++---- tests/model/_nodes/test_image.py | 12 ++++++++---- tests/model/_nodes/test_volume.py | 11 ++++++++--- 3 files changed, 30 insertions(+), 11 deletions(-) diff --git a/src/scenex/model/_nodes/image.py b/src/scenex/model/_nodes/image.py index 55113fb5..1fe9fc66 100644 --- a/src/scenex/model/_nodes/image.py +++ b/src/scenex/model/_nodes/image.py @@ -116,8 +116,18 @@ def _passes_through_parallelogram( # We need to determine whether the planar intersection is within the image # interval bounds. In other words, the intersection point should be within - # [0, magnitude(u)] units away from the image origin along the u axis and - # [0, magnitude(v)] units away from the image origin along the v axis. + # [0, magnitude(u)) units away from the image origin along the u axis and + # [0, magnitude(v)) units away from the image origin along the v axis. + # + # Note the open right bound: if the ray intersects exactly on the far edge of the + # image, we consider that a miss. This approach serves two important purposes: + # + # 1. Adjacent image handling: When images are tiled side-by-side, this prevents + # ambiguity at shared boundaries (only one image reports intersection). + # + # 2. Array indexing safety: The [0, 1) bounds ensure that subsequent coordinate-to- + # array-index mapping never produces out-of-bounds indices. Alternatively we'd + # require clamping logic during array access. offset = intersection - origin # We use some fancy math derived from the link above to convert offset into... @@ -128,8 +138,8 @@ def _passes_through_parallelogram( # ...and the component of offset in direction of v beta = np.dot(w, np.cross(u, offset)) - # Our ray passes through the image if alpha and beta are within [0, 1] - is_inside = alpha >= 0 and alpha <= 1 and beta >= 0 and beta <= 1 + # Our ray passes through the image if alpha and beta are within [0, 1) + is_inside = alpha >= 0 and alpha < 1 and beta >= 0 and beta < 1 # If the ray passes through node, return the depth of the intersection. return t if is_inside else None diff --git a/tests/model/_nodes/test_image.py b/tests/model/_nodes/test_image.py index c06f2cec..e3d0694e 100644 --- a/tests/model/_nodes/test_image.py +++ b/tests/model/_nodes/test_image.py @@ -24,18 +24,22 @@ def test_bounding_box(image: snx.Image) -> None: def test_passes_through(image: Image) -> None: - # Check a ray that passes through the image + # Check a ray that passes through the image hits ray = Ray(origin=(50, 50, 1), direction=(0, 0, -1)) assert image.passes_through(ray) == 1 - # Check a ray that grazes the edge of the image + # Check a ray that grazes the left edge of the image hits ray = Ray(origin=(-0.5, 0, 1), direction=(0, 0, -1)) assert image.passes_through(ray) == 1 - # Check a ray that does not pass through the image + # Check a ray that grazes the right edge of the image misses + ray = Ray(origin=(99.5, 0, 1), direction=(0, 0, -1)) + assert image.passes_through(ray) is None + + # Check a ray that does not pass through the image misses ray = Ray(origin=(-50, -50, 1), direction=(0, 0, -1)) assert image.passes_through(ray) is None - # Check a ray that is perpendicular to the image + # Check a ray that is perpendicular to the image misses ray = Ray(origin=(50, 50, 1), direction=(-1, 0, 0)) assert image.passes_through(ray) is None diff --git a/tests/model/_nodes/test_volume.py b/tests/model/_nodes/test_volume.py index 9f75729b..5d08ac44 100644 --- a/tests/model/_nodes/test_volume.py +++ b/tests/model/_nodes/test_volume.py @@ -19,15 +19,20 @@ def test_bounding_box(volume: snx.Volume) -> None: def test_passes_through(volume: snx.Volume) -> None: - # Check a ray that passes through the volume + # Check a ray that passes through the volume hits ray = Ray(origin=(50, 50, -1), direction=(0, 0, 1)) # Note that it intersects at -0.5 because pixel centers are at integer coordinates assert volume.passes_through(ray) == 0.5 - # Check a ray that grazes the edge of the volume + # Check a ray that grazes the left edge of the volume hits ray = Ray(origin=(-0.5, 0, -1), direction=(0, 0, 1)) assert volume.passes_through(ray) == 0.5 - # Check a ray that does not pass through the volume + # Check a ray that grazes the right edge of the volume misses (the front face) + ray = Ray(origin=(99.5, 0, -1), direction=(0, 0, 1)) + # Because of symmetry, we miss the front face of the volume but hit the back face + assert volume.passes_through(ray) == 60.5 + + # Check a ray that does not pass through the volume misses ray = Ray(origin=(-50, -50, -1), direction=(0, 0, 1)) assert volume.passes_through(ray) is None From 436392a9335a93a7301e0e32335c4bb19e819776 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 26 Sep 2025 11:46:03 -0500 Subject: [PATCH 112/120] Add mouse enter and leave events Also needed for ndv :) --- examples/event_filters.py | 13 +++++- src/scenex/app/_jupyter.py | 20 +++++++++ src/scenex/app/_qt.py | 15 ++++++- src/scenex/app/_wx.py | 20 +++++++++ src/scenex/app/events/__init__.py | 4 ++ src/scenex/app/events/_events.py | 17 ++++++++ src/scenex/model/_canvas.py | 55 ++++++++++++++++++++--- src/scenex/model/_nodes/camera.py | 1 + tests/app/test_jupyter.py | 56 ++++++++++++++++++++++++ tests/app/test_qt.py | 72 ++++++++++++++++++++++++++++++- tests/app/test_wx.py | 48 ++++++++++++++++++--- 11 files changed, 303 insertions(+), 18 deletions(-) diff --git a/examples/event_filters.py b/examples/event_filters.py index 6f9103db..a79fd233 100644 --- a/examples/event_filters.py +++ b/examples/event_filters.py @@ -2,7 +2,7 @@ import numpy as np import scenex as snx -from scenex.app.events import Event, MouseMoveEvent +from scenex.app.events import Event, MouseEnterEvent, MouseLeaveEvent, MouseMoveEvent img = snx.Image( data=np.zeros((200, 200)).astype(np.uint8), @@ -38,6 +38,17 @@ def _view_filter(event: Event) -> bool: data[min_x:max_x, min_y:max_y] = 255 node.data = data + if isinstance(event, MouseEnterEvent): + # Restore original colormap and clear the image when mouse enters + img.data = np.zeros((200, 200), dtype=np.uint8) + if isinstance(event, MouseLeaveEvent): + # Add a bright border when mouse leaves the view + data = np.zeros((200, 200), dtype=np.uint8) + data[0:3, :] = 255 # Top border + data[-3:, :] = 255 # Bottom border + data[:, 0:3] = 255 # Left border + data[:, -3:] = 255 # Right border + img.data = data return True diff --git a/src/scenex/app/_jupyter.py b/src/scenex/app/_jupyter.py index 873c0270..940038c4 100644 --- a/src/scenex/app/_jupyter.py +++ b/src/scenex/app/_jupyter.py @@ -12,6 +12,8 @@ EventFilter, MouseButton, MouseDoublePressEvent, + MouseEnterEvent, + MouseLeaveEvent, MouseMoveEvent, MousePressEvent, MouseReleaseEvent, @@ -98,6 +100,24 @@ def _handle_event(self: RemoteFrameBuffer, ev: dict) -> None: buttons=btn, ) ) + elif etype == "pointer_enter": + canvas_pos = (ev["x"], ev["y"]) + filter._active_button = MouseButton.NONE + if btn := ev.get("button", None): + filter._active_button |= JupyterEventFilter.mouse_btn(btn) + elif btns := ev.get("buttons", None): + for b in btns: + filter._active_button |= JupyterEventFilter.mouse_btn(b) + if world_ray := filter._model_canvas.to_world(canvas_pos): + filter._model_canvas.handle( + MouseEnterEvent( + canvas_pos=canvas_pos, + world_ray=world_ray, + buttons=filter._active_button, + ) + ) + elif etype == "pointer_leave": + filter._model_canvas.handle(MouseLeaveEvent()) elif etype == "wheel": canvas_pos = (ev["x"], ev["y"]) if world_ray := filter._model_canvas.to_world(canvas_pos): diff --git a/src/scenex/app/_qt.py b/src/scenex/app/_qt.py index 3d741195..03a2ff8f 100644 --- a/src/scenex/app/_qt.py +++ b/src/scenex/app/_qt.py @@ -5,7 +5,7 @@ from typing import TYPE_CHECKING, Any, ClassVar, cast from qtpy.QtCore import QEvent, QObject, Qt, QTimer -from qtpy.QtGui import QMouseEvent, QResizeEvent, QWheelEvent +from qtpy.QtGui import QEnterEvent, QMouseEvent, QResizeEvent, QWheelEvent from qtpy.QtWidgets import QApplication, QWidget from superqt.utils import signals_blocked @@ -14,6 +14,8 @@ EventFilter, MouseButton, MouseDoublePressEvent, + MouseEnterEvent, + MouseLeaveEvent, MouseMoveEvent, MousePressEvent, MouseReleaseEvent, @@ -58,7 +60,7 @@ def mouse_btn(self, btn: Any) -> MouseButton: def _convert_event(self, qevent: QEvent) -> Event | None: """Convert a QEvent to a SceneX Event.""" - if isinstance(qevent, QMouseEvent): + if isinstance(qevent, QMouseEvent | QEnterEvent): pos = qevent.position() canvas_pos = (pos.x(), pos.y()) if not (ray := self._model_canvas.to_world(canvas_pos)): @@ -93,6 +95,15 @@ def _convert_event(self, qevent: QEvent) -> Event | None: world_ray=ray, buttons=btn, ) + elif etype == QEvent.Type.Enter: + return MouseEnterEvent( + canvas_pos=canvas_pos, + world_ray=ray, + buttons=self._active_buttons, + ) + + elif qevent.type() == QEvent.Type.Leave: + return MouseLeaveEvent() elif isinstance(qevent, QWheelEvent): # TODO: Figure out the buttons diff --git a/src/scenex/app/_wx.py b/src/scenex/app/_wx.py index dcf0f9f4..3f210fa1 100644 --- a/src/scenex/app/_wx.py +++ b/src/scenex/app/_wx.py @@ -9,6 +9,8 @@ from scenex.app.events._events import ( EventFilter, MouseButton, + MouseEnterEvent, + MouseLeaveEvent, MouseMoveEvent, MousePressEvent, MouseReleaseEvent, @@ -43,6 +45,8 @@ def _install_events(self) -> None: self._canvas.Bind(wx.EVT_MIDDLE_UP, handler=self._on_mouse_up) self._canvas.Bind(wx.EVT_MOTION, handler=self._on_mouse_move) self._canvas.Bind(wx.EVT_MOUSEWHEEL, handler=self._on_wheel) + self._canvas.Bind(wx.EVT_LEAVE_WINDOW, handler=self._on_leave_window) + self._canvas.Bind(wx.EVT_ENTER_WINDOW, handler=self._on_enter_window) self._canvas.Bind(wx.EVT_SIZE, handler=self._on_resize) def uninstall(self) -> None: @@ -56,6 +60,22 @@ def uninstall(self) -> None: self._canvas.Unbind(wx.EVT_MOUSEWHEEL) self._canvas.Unbind(wx.EVT_SIZE) + def _on_leave_window(self, event: wx.MouseEvent) -> None: + self._model_canvas.handle(MouseLeaveEvent()) + event.Skip() + + def _on_enter_window(self, event: wx.MouseEvent) -> None: + pos = event.GetPosition() + if ray := self._model_canvas.to_world((pos.x, pos.y)): + self._model_canvas.handle( + MouseEnterEvent( + canvas_pos=(pos.x, pos.y), + world_ray=ray, + buttons=self._active_button, + ) + ) + event.Skip() + def _on_resize(self, event: wx.SizeEvent) -> None: self._model_canvas.handle( ResizeEvent( diff --git a/src/scenex/app/events/__init__.py b/src/scenex/app/events/__init__.py index d878fad1..223ed74d 100644 --- a/src/scenex/app/events/__init__.py +++ b/src/scenex/app/events/__init__.py @@ -5,7 +5,9 @@ EventFilter, MouseButton, MouseDoublePressEvent, + MouseEnterEvent, MouseEvent, + MouseLeaveEvent, MouseMoveEvent, MousePressEvent, MouseReleaseEvent, @@ -19,7 +21,9 @@ "EventFilter", "MouseButton", "MouseDoublePressEvent", + "MouseEnterEvent", "MouseEvent", + "MouseLeaveEvent", "MouseMoveEvent", "MousePressEvent", "MouseReleaseEvent", diff --git a/src/scenex/app/events/_events.py b/src/scenex/app/events/_events.py index d45131b8..c5dca0c2 100644 --- a/src/scenex/app/events/_events.py +++ b/src/scenex/app/events/_events.py @@ -73,6 +73,23 @@ class MouseEvent(Event): buttons: MouseButton +@dataclass +class MouseLeaveEvent(Event): + """Mouse leave event. + + Note that this does not inherit from MouseEvent, as no position or buttons are + """ + + pass + + +@dataclass +class MouseEnterEvent(MouseEvent): + """Mouse enter event.""" + + pass + + @dataclass class MouseMoveEvent(MouseEvent): """Mouse move event.""" diff --git a/src/scenex/model/_canvas.py b/src/scenex/model/_canvas.py index 83d5af3c..d75a0b29 100644 --- a/src/scenex/model/_canvas.py +++ b/src/scenex/model/_canvas.py @@ -6,9 +6,16 @@ import numpy as np import pylinalg as la from cmap import Color -from pydantic import ConfigDict, Field +from pydantic import ConfigDict, Field, PrivateAttr -from scenex.app.events import Event, MouseEvent, Ray, ResizeEvent +from scenex.app.events import ( + Event, + MouseEnterEvent, + MouseEvent, + MouseLeaveEvent, + Ray, + ResizeEvent, +) from ._base import EventedBase from ._evented_list import EventedList @@ -36,6 +43,9 @@ class Canvas(EventedBase): title: str = Field(default="", description="The title of the canvas.") views: EventedList[View] = Field(default_factory=EventedList, frozen=True) + # Private state for tracking mouse view transitions + _last_mouse_view: View | None = PrivateAttr(default=None) + model_config = ConfigDict(extra="forbid") def model_post_init(self, __context: Any) -> None: @@ -115,12 +125,36 @@ def handle(self, event: Event) -> bool: """Handle the passed event.""" handled = False if isinstance(event, MouseEvent): - if view := self._containing_view(event.canvas_pos): + current_view = self._containing_view(event.canvas_pos) + + # Check if we've moved between views and handle transitions + # BEGIN UNTESTED CODE! + # TODO: Add a test for this once multiple views are better supported + if self._last_mouse_view != current_view: + # Send leave event to the previous view + if self._last_mouse_view is not None: + leave_event = MouseLeaveEvent() + self._last_mouse_view.filter_event(leave_event) + + # Send enter event to the new view (if any) + if current_view is not None: + enter_event = MouseEnterEvent( + canvas_pos=event.canvas_pos, + world_ray=event.world_ray, + buttons=event.buttons, + ) + current_view.filter_event(enter_event) + + self._last_mouse_view = current_view + # END UNTESTED CODE! + + # Handle the original mouse event in the current view + if current_view is not None: # Give the view a chance to observe the result - if view.filter_event(event): + if current_view.filter_event(event): return True - intersections = event.world_ray.intersections(view.scene) + intersections = event.world_ray.intersections(current_view.scene) # FIXME: Consider only reporting the first? # Or do we only report until we hit a node with opacity=1? for node, _distance in intersections: @@ -128,8 +162,15 @@ def handle(self, event: Event) -> bool: if Canvas._filter_through(event, node, node): return True # No nodes in the view handled the event - pass it to the camera - if view.camera.interactive: - handled |= view.camera.filter_event(event, view.camera) + if current_view.camera.interactive: + handled |= current_view.camera.filter_event( + event, current_view.camera + ) + elif isinstance(event, MouseLeaveEvent): + # Mouse left the entire canvas + if self._last_mouse_view is not None: + handled = self._last_mouse_view.filter_event(event) + self._last_mouse_view = None elif isinstance(event, ResizeEvent): # TODO: How might some event filter tap into the resize? self.size = (event.width, event.height) diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index 8449909f..b129ea54 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -71,6 +71,7 @@ def bounding_box(self) -> None: _filter: Callable[[Event, Node], bool] | None = PrivateAttr(default=None) def passes_through(self, ray: Ray) -> float | None: + # Cameras are not rendered objects return None @property diff --git a/tests/app/test_jupyter.py b/tests/app/test_jupyter.py index 12ac3641..c4b7845b 100644 --- a/tests/app/test_jupyter.py +++ b/tests/app/test_jupyter.py @@ -13,6 +13,8 @@ from scenex.app.events import ( MouseButton, MouseDoublePressEvent, + MouseEnterEvent, + MouseLeaveEvent, MouseMoveEvent, MousePressEvent, MouseReleaseEvent, @@ -58,6 +60,7 @@ def _validate_ray(maybe_ray: Ray | None) -> Ray: # See jupyter_rfb.events +NONE = 0 LEFT_MOUSE = 1 RIGHT_MOUSE = 2 @@ -245,3 +248,56 @@ def test_resize(evented_canvas: snx.Canvas) -> None: ) assert evented_canvas.width == new_size[0] assert evented_canvas.height == new_size[1] + + +def test_pointer_enter(evented_canvas: snx.Canvas) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() + view_mock = MagicMock() + evented_canvas.views[0].set_event_filter(view_mock) + enter_point = (0, 0) + native.handle_event( + { + "event_type": "pointer_enter", + "x": enter_point[0], + "y": enter_point[1], + "button": NONE, + } + ) + # Verify MouseEnterEvent was passed to view filter + view_mock.assert_called_once_with( + MouseEnterEvent( + canvas_pos=enter_point, + world_ray=_validate_ray(evented_canvas.to_world(enter_point)), + buttons=MouseButton.NONE, + ) + ) + + +def test_pointer_leave(evented_canvas: snx.Canvas) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() + view_mock = MagicMock() + evented_canvas.views[0].set_event_filter(view_mock) + enter_point = (0, 0) + native.handle_event( + { + "event_type": "pointer_enter", + "x": enter_point[0], + "y": enter_point[1], + "button": NONE, + } + ) + view_mock.reset_mock() + + # Now leave + native.handle_event( + { + "event_type": "pointer_leave", + } + ) + + # Verify MouseLeaveEvent was passed to view filter + view_mock.assert_called_once_with(MouseLeaveEvent()) diff --git a/tests/app/test_qt.py b/tests/app/test_qt.py index e7bdee25..438ff59c 100644 --- a/tests/app/test_qt.py +++ b/tests/app/test_qt.py @@ -12,6 +12,8 @@ from scenex.app.events import ( MouseButton, MouseDoublePressEvent, + MouseEnterEvent, + MouseLeaveEvent, MouseMoveEvent, MousePressEvent, MouseReleaseEvent, @@ -23,7 +25,9 @@ from scenex.adaptors._base import CanvasAdaptor if determine_app() == GuiFrontend.QT: - from qtpy.QtCore import QPoint, Qt + from qtpy.QtCore import QEvent, QPoint, QPointF, Qt + from qtpy.QtGui import QEnterEvent + from qtpy.QtWidgets import QApplication if TYPE_CHECKING: from pytestqt.qtbot import QtBot # pyright: ignore[reportMissingImports] @@ -188,6 +192,72 @@ def test_resize(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: assert evented_canvas.height == new_size[1] +def test_mouse_enter(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() + qtbot.add_widget(native) + + # Mock view filter to capture enter events + mock = MagicMock() + evented_canvas.views[0].set_event_filter(mock) + + # Simulate mouse enter event by posting to event queue + # Note that qtbot does not have a method for this + enter_point = (0, 0) + enter_event = QEnterEvent( + QPointF(*enter_point), # localPos + QPointF(*enter_point), # windowPos + QPointF(*enter_point), # screenPos + ) + app = QApplication.instance() + assert app is not None + app.postEvent(native, enter_event) + app.processEvents() + + # Verify MouseEnterEvent was passed to view filter + mock.assert_called_once_with( + MouseEnterEvent( + canvas_pos=enter_point, + world_ray=_validate_ray(evented_canvas.to_world(enter_point)), + buttons=MouseButton.NONE, + ) + ) + + +def test_mouse_leave(evented_canvas: snx.Canvas, qtbot: QtBot) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() + qtbot.add_widget(native) + + # Mock view filter to capture leave events + view_mock = MagicMock() + evented_canvas.views[0].set_event_filter(view_mock) + + # NOTE: We need to first enter to establish the view as active + enter_point = (10, 15) + enter_event = QEnterEvent( + QPointF(*enter_point), QPointF(*enter_point), QPointF(*enter_point) + ) + app = QApplication.instance() + assert app is not None + app.postEvent(native, enter_event) + app.processEvents() + view_mock.reset_mock() + + # Now simulate leave event + leave_event = QEvent(QEvent.Type.Leave) + app.postEvent(native, leave_event) + + # Process events to ensure the event is handled + app.processEvents() + qtbot.wait(10) + + # Verify MouseLeaveEvent was passed to view filter + view_mock.assert_called_once_with(MouseLeaveEvent()) + + # TODO: Implement when Qt new enough # https://doc.qt.io/qt-6/qtest.html#wheelEvent # def test_wheel(evented_canvas: snx.Canvas): diff --git a/tests/app/test_wx.py b/tests/app/test_wx.py index 1f08ea70..fa3ab1fc 100644 --- a/tests/app/test_wx.py +++ b/tests/app/test_wx.py @@ -11,6 +11,8 @@ from scenex.app import GuiFrontend, determine_app from scenex.app.events import ( MouseButton, + MouseEnterEvent, + MouseLeaveEvent, MouseMoveEvent, MousePressEvent, MouseReleaseEvent, @@ -46,14 +48,7 @@ def _processEvent(evt: wx.PyEventBinder, wdg: wx.Control, **kwargs: Any) -> None Note that wx.UIActionSimulator is an alternative to this approach. It seems to actually move the cursor around though, which is really annoying :) """ - evtLoop = wx.App.Get().GetTraits().CreateEventLoop() - wx.EventLoopActivator(evtLoop) if evt == wx.EVT_SIZE: - if not wdg.IsShown(): - wdg.Show(True) - - wx.MilliSleep(50) - evtLoop.YieldFor(wx.EVT_CATEGORY_ALL) # pyright: ignore[reportAttributeAccessIssue] ev = wx.SizeEvent(kwargs["sz"], evt.typeId) else: ev = wx.MouseEvent(evt.typeId) @@ -65,7 +60,10 @@ def _processEvent(evt: wx.PyEventBinder, wdg: wx.Control, **kwargs: Any) -> None wx.PostEvent(wdg.GetEventHandler(), ev) # Borrowed from: # https://github.com/wxWidgets/Phoenix/blob/master/unittests/wtc.py#L41 + wdg.Show(True) wx.MilliSleep(50) + evtLoop = wx.App.Get().GetTraits().CreateEventLoop() + wx.EventLoopActivator(evtLoop) evtLoop.YieldFor(wx.EVT_CATEGORY_ALL) # pyright: ignore[reportAttributeAccessIssue] @@ -175,3 +173,39 @@ def test_resize(evented_canvas: snx.Canvas) -> None: _processEvent(wx.EVT_SIZE, native, sz=wx.Size(*new_size)) assert evented_canvas.width == new_size[0] assert evented_canvas.height == new_size[1] + + +def test_mouse_enter(evented_canvas: snx.Canvas) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() + view_mock = MagicMock() + evented_canvas.views[0].set_event_filter(view_mock) + enter_point = (0, 15) + _processEvent(wx.EVT_ENTER_WINDOW, native, pos=wx.Point(*enter_point)) + + # Verify MouseEnterEvent was passed to view filter + view_mock.assert_called_once_with( + MouseEnterEvent( + canvas_pos=enter_point, + world_ray=_validate_ray(evented_canvas.to_world(enter_point)), + buttons=MouseButton.NONE, + ) + ) + + +def test_mouse_leave(evented_canvas: snx.Canvas) -> None: + native = cast( + "CanvasAdaptor", evented_canvas._get_adaptors(create=True)[0] + )._snx_get_native() + view_mock = MagicMock() + evented_canvas.views[0].set_event_filter(view_mock) + # NOTE: We need to first enter to establish the view as active + enter_point = (0, 15) + _processEvent(wx.EVT_ENTER_WINDOW, native, pos=wx.Point(*enter_point)) + view_mock.reset_mock() + + # Now leave + _processEvent(wx.EVT_LEAVE_WINDOW, native, pos=wx.Point(0, 0)) + # Verify MouseLeaveEvent was passed to view filter + view_mock.assert_called_once_with(MouseLeaveEvent()) From 7ecf1febd2970d92aa3e97ddd6267707fd7e9c90 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 26 Sep 2025 15:42:08 -0500 Subject: [PATCH 113/120] Fix RGB images in pygfx --- examples/rgb.py | 62 ++++++++++++++++++++++++++++ src/scenex/adaptors/_pygfx/_image.py | 18 ++++++-- src/scenex/model/_nodes/camera.py | 4 ++ tests/adaptors/_pygfx/test_image.py | 32 ++++++++++++++ 4 files changed, 112 insertions(+), 4 deletions(-) create mode 100644 examples/rgb.py diff --git a/examples/rgb.py b/examples/rgb.py new file mode 100644 index 00000000..2522da02 --- /dev/null +++ b/examples/rgb.py @@ -0,0 +1,62 @@ +""" +Demonstrates displaying an RGB image. + +Pressing the mouse buttons cycles through the R, G, and B channels +Releasing the mouse button returns to the full RGB image. +""" + +import cmap +import numpy as np + +import scenex as snx +import scenex.app.events as events +from scenex.utils.controllers import PanZoomController + +try: + from imageio.v3 import imread + + # FIXME: Why is the image upside down? + data = np.asarray(imread("imageio:astronaut.png")).astype(np.uint8) +except Exception: + data = np.zeros((256, 256, 3), dtype=np.uint8) + + # R,G,B are simple + for i in range(256): + data[i, :, 0] = i # Red + data[i, :, 2] = 255 - i # Blue + for j in range(256): + data[:, j, 1] = j # Green + +img = snx.Image(data=data, clims=(0, 255), interactive=True) + +view = snx.View( + scene=snx.Scene( + children=[ + img, + ] + ), + camera=snx.Camera(controller=PanZoomController(), interactive=True), +) + +idx = 0 +cmaps = ["red", "green", "blue"] + + +def _event_filter(event: events.Event) -> bool: + if isinstance(event, events.MousePressEvent): + for node, _distance in event.world_ray.intersections(view.scene): + if node == img: + global idx + img.data = data[:, :, idx % 3] + img.cmap = cmap.Colormap(cmaps[idx % 3]) + idx += 1 + elif isinstance(event, events.MouseReleaseEvent): + img.data = data + img.cmap = cmap.Colormap("red") + return True # Don't block the event + + +view.set_event_filter(_event_filter) + +snx.show(view) +snx.run() diff --git a/src/scenex/adaptors/_pygfx/_image.py b/src/scenex/adaptors/_pygfx/_image.py index cd06f402..e41c1190 100644 --- a/src/scenex/adaptors/_pygfx/_image.py +++ b/src/scenex/adaptors/_pygfx/_image.py @@ -24,15 +24,19 @@ class Image(Node, ImageAdaptor): _pygfx_node: pygfx.Image _material: pygfx.ImageBasicMaterial + _geometry: pygfx.Geometry def __init__(self, image: model.Image, **backend_kwargs: Any) -> None: - self._material = pygfx.ImageBasicMaterial(clim=image.clims) - self._pygfx_node = pygfx.Image(None, self._material) self._model = image + self._material = pygfx.ImageBasicMaterial(clim=image.clims) self._snx_set_data(image.data) + self._pygfx_node = pygfx.Image(self._geometry, self._material) def _snx_set_cmap(self, arg: Colormap) -> None: - self._material.map = arg.to_pygfx() + if np.asarray(self._model.data).ndim == 3: + self._material.map = None + else: + self._material.map = arg.to_pygfx() def _snx_set_clims(self, arg: tuple[float, float] | None) -> None: self._material.clim = arg @@ -64,4 +68,10 @@ def _create_texture(self, data: ArrayLike | None) -> pygfx.Texture: def _snx_set_data(self, data: ArrayLike) -> None: self._texture = self._create_texture(data) - self._pygfx_node.geometry = pygfx.Geometry(grid=self._texture) + self._geometry = pygfx.Geometry(grid=self._texture) + if hasattr(self, "_pygfx_node"): + self._pygfx_node.geometry = self._geometry + if np.asarray(data).ndim == 3: + self._material.map = None + else: + self._material.map = self._model.cmap.to_pygfx() diff --git a/src/scenex/model/_nodes/camera.py b/src/scenex/model/_nodes/camera.py index b129ea54..37547ae7 100644 --- a/src/scenex/model/_nodes/camera.py +++ b/src/scenex/model/_nodes/camera.py @@ -87,6 +87,8 @@ def forward(self, arg: Vector3D) -> None: """Sets the forward direction of the camera.""" # Compute the quaternion needed to rotate from the current forward direction to # the desired forward direction + if np.dot(self.forward, arg) == 1: + return # No change needed rot_quat = la.quat_from_vecs(self.forward, arg) rot_axis, rot_angle = la.quat_to_axis_angle(rot_quat) @@ -110,6 +112,8 @@ def up(self, arg: Vector3D) -> None: Does not affect the forward direction of the camera so long as the new up direction is perpendicular to the existing forward direction. """ + if np.dot(self.up, arg) == 1: + return # No change needed # Compute the quaternion needed to rotate from the current up direction to # the desired up direction rot_quat = la.quat_from_vecs(self.up, arg) diff --git a/tests/adaptors/_pygfx/test_image.py b/tests/adaptors/_pygfx/test_image.py index 3bfce80b..b4591c3b 100644 --- a/tests/adaptors/_pygfx/test_image.py +++ b/tests/adaptors/_pygfx/test_image.py @@ -1,5 +1,6 @@ from __future__ import annotations +import cmap import numpy as np import pytest @@ -13,6 +14,7 @@ def image() -> snx.Image: return snx.Image( data=np.random.randint(0, 255, (100, 100), dtype=np.uint8), + cmap=cmap.Colormap("viridis"), ) @@ -62,3 +64,33 @@ def test_transform(image: snx.Image, adaptor: adaptors.Image) -> None: bb = adaptor._pygfx_node.get_world_bounding_box() assert bb is not None assert np.array_equal(exp_bounds, bb) + + +def test_rgb(image: snx.Image, adaptor: adaptors.Image) -> None: + """Tests RGB(A) images are correctly massaged to avoid shading errors.""" + # Assert a colormap can be used with 2D data + image.data = np.random.randint(0, 255, (100, 100), dtype=np.uint8) + image.cmap = cmap.Colormap("red") + np.testing.assert_array_equal(image.data, adaptor._pygfx_node.geometry.grid.data) # pyright: ignore + np.testing.assert_array_equal( + cmap.Colormap("red").to_pygfx().texture.data, + adaptor._pygfx_node.material.map.texture.data, # pyright: ignore + ) + + # When the data changes to RGB, the adaptor's material map should be None + image.data = np.random.randint(0, 255, (100, 100, 3), dtype=np.uint8) + np.testing.assert_array_equal(image.data, adaptor._pygfx_node.geometry.grid.data) # pyright: ignore + assert adaptor._pygfx_node.material.map is None # pyright: ignore + + # Even if the cmap is set, it should be ignored + image.cmap = cmap.Colormap("blue") + np.testing.assert_array_equal(image.data, adaptor._pygfx_node.geometry.grid.data) # pyright: ignore + assert adaptor._pygfx_node.material.map is None # pyright: ignore + + # But it should snap to place if we go back to 2D data + image.data = np.random.randint(0, 255, (100, 100), dtype=np.uint8) + np.testing.assert_array_equal(image.data, adaptor._pygfx_node.geometry.grid.data) # pyright: ignore + np.testing.assert_array_equal( + cmap.Colormap("blue").to_pygfx().texture.data, + adaptor._pygfx_node.material.map.texture.data, # type: ignore + ) From 8549ed573fa607522f6be7c69bca2cd6da71b7bd Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 1 Oct 2025 11:23:43 -0500 Subject: [PATCH 114/120] Add App.call_in_main_thread --- src/scenex/app/_auto.py | 24 ++++++++++++++ src/scenex/app/_qt.py | 71 ++++++++++++++++++++++++++++++++++++++++- src/scenex/app/_wx.py | 47 +++++++++++++++++++++++++++ 3 files changed, 141 insertions(+), 1 deletion(-) diff --git a/src/scenex/app/_auto.py b/src/scenex/app/_auto.py index 80cb7887..c2716eee 100644 --- a/src/scenex/app/_auto.py +++ b/src/scenex/app/_auto.py @@ -3,18 +3,25 @@ import importlib import os import sys +from concurrent.futures import Executor, Future, ThreadPoolExecutor from contextlib import contextmanager from enum import Enum +from functools import cache from typing import TYPE_CHECKING, cast if TYPE_CHECKING: from collections.abc import Callable, Iterator from typing import Any + from typing_extensions import ParamSpec, TypeVar + from scenex.adaptors._base import CanvasAdaptor from scenex.app.events._events import EventFilter from scenex.model import Canvas + T = TypeVar("T") + P = ParamSpec("P") + GUI_ENV_VAR = "SCENEX_WIDGET_BACKEND" """Preferred GUI frontend. If not set, the first available GUI frontend is used.""" @@ -75,16 +82,33 @@ def process_events(self) -> None: """Process events.""" raise NotImplementedError("Must be implemented by subclasses.") + def call_in_main_thread( + self, func: Callable[P, T], *args: P.args, **kwargs: P.kwargs + ) -> Future[T]: + """Call `func` in the main gui thread.""" + future: Future[T] = Future() + future.set_result(func(*args, **kwargs)) + return future + def call_later(self, msec: int, func: Callable[[], None]) -> None: """Call `func` after `msec` milliseconds.""" raise NotImplementedError("Must be implemented by subclasses.") + def get_executor(self) -> Executor: + """Return an executor for running tasks in the background.""" + return _thread_pool_executor() + @contextmanager def block_events(self, window: Any) -> Iterator[None]: """Context manager to block events for a window.""" raise NotImplementedError("Must be implemented by subclasses.") +@cache +def _thread_pool_executor() -> ThreadPoolExecutor: + return ThreadPoolExecutor(max_workers=2) + + def _running_apps() -> Iterator[GuiFrontend]: """Return an iterator of running GUI applications.""" for mod_name in ("PyQt5", "PySide2", "PySide6", "PyQt6"): diff --git a/src/scenex/app/_qt.py b/src/scenex/app/_qt.py index 03a2ff8f..59a3e897 100644 --- a/src/scenex/app/_qt.py +++ b/src/scenex/app/_qt.py @@ -1,10 +1,20 @@ from __future__ import annotations import sys +from concurrent.futures import Future from contextlib import contextmanager from typing import TYPE_CHECKING, Any, ClassVar, cast -from qtpy.QtCore import QEvent, QObject, Qt, QTimer +from qtpy.QtCore import ( + QCoreApplication, + QEvent, + QMetaObject, + QObject, + Qt, + QThread, + QTimer, + pyqtSlot, +) from qtpy.QtGui import QEnterEvent, QMouseEvent, QResizeEvent, QWheelEvent from qtpy.QtWidgets import QApplication, QWidget from superqt.utils import signals_blocked @@ -29,6 +39,7 @@ from scenex import Canvas from scenex.adaptors._base import CanvasAdaptor + from scenex.app._auto import P, T from scenex.app.events import Event @@ -174,8 +185,66 @@ def call_later(self, msec: int, func: Callable[[], None]) -> None: """Call `func` after `msec` milliseconds.""" QTimer.singleShot(msec, Qt.TimerType.PreciseTimer, func) + def call_in_main_thread( + self, func: Callable[P, T], *args: P.args, **kwargs: P.kwargs + ) -> Future[T]: + return call_in_main_thread(func, *args, **kwargs) + @contextmanager def block_events(self, window: Any) -> Iterator[None]: """Context manager to block events for a window.""" with signals_blocked(window): yield + + +class MainThreadInvoker(QObject): + _current_callable: Callable | None = None + _moved: bool = False + + def invoke( + self, func: Callable[P, T], *args: P.args, **kwargs: P.kwargs + ) -> Future[T]: + """Invokes a function in the main thread and returns a Future.""" + future: Future[T] = Future() + + def wrapper() -> None: + try: + result = func(*args, **kwargs) + future.set_result(result) + except Exception as e: + future.set_exception(e) + + self._current_callable = wrapper + QMetaObject.invokeMethod( + self, "_invoke_current", Qt.ConnectionType.QueuedConnection + ) + return future + + @pyqtSlot() + def _invoke_current(self) -> None: + """Invokes the current callable.""" + if (cb := self._current_callable) is not None: + cb() + _INVOKERS.discard(self) + + +if (QAPP := QCoreApplication.instance()) is None: + raise RuntimeError("QApplication must be created before this module is imported.") + +_APP_THREAD = QAPP.thread() + +_INVOKERS = set() + + +def call_in_main_thread( + func: Callable[P, T], *args: P.args, **kwargs: P.kwargs +) -> Future[T]: + if QThread.currentThread() is not _APP_THREAD: + invoker = MainThreadInvoker() + invoker.moveToThread(_APP_THREAD) + _INVOKERS.add(invoker) + return invoker.invoke(func, *args, **kwargs) + + future: Future[T] = Future() + future.set_result(func(*args, **kwargs)) + return future diff --git a/src/scenex/app/_wx.py b/src/scenex/app/_wx.py index 3f210fa1..ef961938 100644 --- a/src/scenex/app/_wx.py +++ b/src/scenex/app/_wx.py @@ -1,5 +1,6 @@ from __future__ import annotations +from concurrent.futures import Future from contextlib import contextmanager from typing import TYPE_CHECKING, Any @@ -23,6 +24,7 @@ from scenex import Canvas from scenex.adaptors._base import CanvasAdaptor + from scenex.app._auto import P, T class WxEventFilter(EventFilter): @@ -188,8 +190,53 @@ def call_later(self, msec: int, func: Callable[[], None]) -> None: """Call `func` after `msec` milliseconds.""" wx.CallLater(msec, func) + def call_in_main_thread( + self, func: Callable[P, T], *args: P.args, **kwargs: P.kwargs + ) -> Future[T]: + return call_in_main_thread(func, *args, **kwargs) + @contextmanager def block_events(self, window: Any) -> Iterator[None]: """Context manager to block events for a window.""" with wx.EventBlocker(window): yield + + +class MainThreadInvoker: + def __init__(self) -> None: + """Utility for invoking functions in the main thread.""" + # Ensure this is initialized from the main thread + if not wx.IsMainThread(): # pyright: ignore[reportCallIssue] + raise RuntimeError( + "MainThreadInvoker must be initialized in the main thread" + ) + + def invoke( + self, func: Callable[P, T], *args: P.args, **kwargs: P.kwargs + ) -> Future[T]: + """Invokes a function in the main thread and returns a Future.""" + future: Future[T] = Future() + + def wrapper() -> None: + try: + result = func(*args, **kwargs) + future.set_result(result) + except Exception as e: + future.set_exception(e) + + wx.CallAfter(wrapper) + return future + + +_MAIN_THREAD_INVOKER = MainThreadInvoker() + + +def call_in_main_thread( + func: Callable[P, T], *args: P.args, **kwargs: P.kwargs +) -> Future[T]: + if not wx.IsMainThread(): # pyright: ignore[reportCallIssue] + return _MAIN_THREAD_INVOKER.invoke(func, *args, **kwargs) + + future: Future[T] = Future() + future.set_result(func(*args, **kwargs)) + return future From 89552e5448c8e1d835a39614ec645adc475df05b Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Wed, 1 Oct 2025 13:38:14 -0500 Subject: [PATCH 115/120] Dynamic slot import --- src/scenex/app/_qt.py | 30 +++++++++++++++++++----------- 1 file changed, 19 insertions(+), 11 deletions(-) diff --git a/src/scenex/app/_qt.py b/src/scenex/app/_qt.py index 59a3e897..ce2ab5ac 100644 --- a/src/scenex/app/_qt.py +++ b/src/scenex/app/_qt.py @@ -13,7 +13,6 @@ Qt, QThread, QTimer, - pyqtSlot, ) from qtpy.QtGui import QEnterEvent, QMouseEvent, QResizeEvent, QWheelEvent from qtpy.QtWidgets import QApplication, QWidget @@ -33,6 +32,17 @@ WheelEvent, ) +# NOTE: PyQt and PySide have different names for the Slot decorator +# but they're more or less interchangeable +try: + from qtpy.QtCore import Slot as slot # type: ignore[attr-defined] +except ImportError: + try: + from qtpy.QtCore import pyqtSlot as slot + except ImportError as e: + raise Exception("Could not import Slot or pyqtSlot from qtpy.QtCore") from e + + if TYPE_CHECKING: from collections.abc import Callable, Iterator from typing import Any @@ -188,7 +198,7 @@ def call_later(self, msec: int, func: Callable[[], None]) -> None: def call_in_main_thread( self, func: Callable[P, T], *args: P.args, **kwargs: P.kwargs ) -> Future[T]: - return call_in_main_thread(func, *args, **kwargs) + return _call_in_main_thread(func, *args, **kwargs) @contextmanager def block_events(self, window: Any) -> Iterator[None]: @@ -220,7 +230,7 @@ def wrapper() -> None: ) return future - @pyqtSlot() + @slot() # type: ignore[misc] def _invoke_current(self) -> None: """Invokes the current callable.""" if (cb := self._current_callable) is not None: @@ -228,20 +238,18 @@ def _invoke_current(self) -> None: _INVOKERS.discard(self) -if (QAPP := QCoreApplication.instance()) is None: - raise RuntimeError("QApplication must be created before this module is imported.") - -_APP_THREAD = QAPP.thread() - _INVOKERS = set() -def call_in_main_thread( +def _call_in_main_thread( func: Callable[P, T], *args: P.args, **kwargs: P.kwargs ) -> Future[T]: - if QThread.currentThread() is not _APP_THREAD: + if (app := QCoreApplication.instance()) is None: + raise RuntimeError("No Qt application instance is running") + app_thread = app.thread() + if QThread.currentThread() is not app_thread: invoker = MainThreadInvoker() - invoker.moveToThread(_APP_THREAD) + invoker.moveToThread(app_thread) _INVOKERS.add(invoker) return invoker.invoke(func, *args, **kwargs) From e632ee2446adf198d516c5685aba8328564a0878 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 2 Oct 2025 11:43:32 -0500 Subject: [PATCH 116/120] Validate view.filter_event results --- src/scenex/model/_view.py | 49 +++++++++++++++++++++++++++++++-- tests/model/_nodes/test_view.py | 35 ++++++++++++++++++++++- 2 files changed, 81 insertions(+), 3 deletions(-) diff --git a/src/scenex/model/_view.py b/src/scenex/model/_view.py index 9d5feadb..11a7e75c 100644 --- a/src/scenex/model/_view.py +++ b/src/scenex/model/_view.py @@ -80,6 +80,25 @@ def render(self) -> np.ndarray: def set_event_filter( self, callable: Callable[[Event], bool] | None ) -> Callable[[Event], bool] | None: + """ + Registers a callable to filter events. + + Parameters + ---------- + callable : Callable[[Event], bool] | None + A callable that takes an Event and returns True if the event was handled, + False otherwise. Passing None is equivalent to removing any existing filter. + By returning True, the callable indicates that the event has been handled + and should not be propagated to subsequent handlers. + + Returns + ------- + Callable[[Event], bool] | None + The previous event filter, or None if there was no filter. + + Note the name has parity with Node.filter_event, but there's not much filtering + going on. + """ old, self._filter = self._filter, callable return old @@ -91,7 +110,33 @@ def filter_event(self, event: Event) -> bool: 1. Require summarization of multiple smaller event responses. 2. Could not be picked up by a node (e.g. mouse leaving an image). - Note the name has parity with Node.filter_event, but there's much filtering + Note the name has parity with Node.filter_event, but there's not much filtering going on. + + Parameters + ---------- + event : Event + An event occurring in the view. + + Returns + ------- + bool + True iff the event should not be propagated to other handlers. """ - return self._filter(event) if self._filter else False + if self._filter: + handled = self._filter(event) + if not isinstance(handled, bool): + # Some widget frameworks (i.e. Qt) get upset when non-booleans are + # returned. If the event-filter does not return a boolean, rather than + # letting that propagate upwards, we log a warning and return False. + logger.warning( + f"Event filter {self._filter} did not return a boolean. " + "Returning False." + ) + # Return False. We assume that if the user wanted to block future + # processing, they'd be less likely to forget a boolean return. + # Further, allowing downstream processing is a clear sign to the author + # that they forgot to block propagation. + handled = False + return handled + return False diff --git a/tests/model/_nodes/test_view.py b/tests/model/_nodes/test_view.py index f5d96ac6..f2d8ed00 100644 --- a/tests/model/_nodes/test_view.py +++ b/tests/model/_nodes/test_view.py @@ -5,7 +5,7 @@ import numpy as np import scenex as snx -from scenex.app.events import MouseButton, MouseMoveEvent +from scenex.app.events import Event, MouseButton, MouseMoveEvent from scenex.utils import projections @@ -59,3 +59,36 @@ def test_events() -> None: canvas.handle(event) img_filter.assert_not_called() view_filter.assert_called_once_with(event) + + +def test_filter_returning_None() -> None: + """Some widget backends (e.g. Qt) get upset when non-booleans are returned. + + This test ensures that if a faulty event filter is set that returns None, + the event is treated as handled (i.e. True is returned). + """ + # Create a view... + view = snx.View() + + # ...with a faulty event filter... + def faulty_filter(event: Event) -> bool: + return None # type: ignore[return-value] + + view.set_event_filter(faulty_filter) + + # ...put it on a canvas... + canvas = snx.Canvas(width=int(view.layout.width), height=int(view.layout.height)) + canvas.views.append(view) + + # ...and create a mock event... + canvas_pos = (0, 0) + world_ray = canvas.to_world(canvas_pos) + assert world_ray is not None + event = MouseMoveEvent( + canvas_pos=canvas_pos, world_ray=world_ray, buttons=MouseButton.NONE + ) + + # ...to test handling... + handled = view.filter_event(event) + assert isinstance(handled, bool) + assert handled is False From 4d4d28919809a9db8abb87c9d53d689c3450733a Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 2 Oct 2025 15:08:47 -0500 Subject: [PATCH 117/120] First cut: Meshes Not much is supported...YET! --- examples/basic_mesh.py | 48 +++++++++++++++++++++++++ src/scenex/__init__.py | 2 ++ src/scenex/adaptors/_base.py | 12 +++++++ src/scenex/adaptors/_pygfx/__init__.py | 2 ++ src/scenex/adaptors/_pygfx/_mesh.py | 50 ++++++++++++++++++++++++++ src/scenex/adaptors/_vispy/__init__.py | 2 ++ src/scenex/adaptors/_vispy/_mesh.py | 46 ++++++++++++++++++++++++ src/scenex/model/__init__.py | 2 ++ src/scenex/model/_nodes/mesh.py | 48 +++++++++++++++++++++++++ 9 files changed, 212 insertions(+) create mode 100644 examples/basic_mesh.py create mode 100644 src/scenex/adaptors/_pygfx/_mesh.py create mode 100644 src/scenex/adaptors/_vispy/_mesh.py create mode 100644 src/scenex/model/_nodes/mesh.py diff --git a/examples/basic_mesh.py b/examples/basic_mesh.py new file mode 100644 index 00000000..550c1839 --- /dev/null +++ b/examples/basic_mesh.py @@ -0,0 +1,48 @@ +import cmap +import numpy as np + +import scenex as snx +from scenex.utils.controllers import PanZoomController + +try: + from scenex.imgui import add_imgui_controls +except ImportError: + print("imgui not available, skipping imgui controls") + add_imgui_controls = None # type: ignore[assignment] + +vertices = np.array( + [ + [0, 0, 0], # 0 + [1, 0, 0], # 1 + [2, 0, 0], # 2 + [0, 1, 0], # 3 + [1, 1, 0], # 4 + [2, 1, 0], # 5 + [0, 2, 0], # 6 + [1, 2, 0], # 7 + [2, 2, 0], # 8 + ] +) +faces = np.array( + [ + [0, 1, 3], + [1, 2, 5], + [5, 8, 7], + [7, 6, 3], + ] +) + +view = snx.View( + scene=snx.Scene( + children=[ + snx.Mesh(vertices=vertices, faces=faces, color=cmap.Color("red")), + ] + ), + camera=snx.Camera(controller=PanZoomController(), interactive=True), +) + +snx.show(view) +# view.camera.transform = snx.Transform() +view.camera.look_at((1, 1, -1), up=(0, 1, 0)) + +snx.run() diff --git a/src/scenex/__init__.py b/src/scenex/__init__.py index d116e8ed..3e514af5 100644 --- a/src/scenex/__init__.py +++ b/src/scenex/__init__.py @@ -13,6 +13,7 @@ from .model._canvas import Canvas from .model._nodes.camera import Camera from .model._nodes.image import Image +from .model._nodes.mesh import Mesh from .model._nodes.node import Node from .model._nodes.points import Points from .model._nodes.scene import Scene @@ -25,6 +26,7 @@ "Camera", "Canvas", "Image", + "Mesh", "Node", "Points", "Scene", diff --git a/src/scenex/adaptors/_base.py b/src/scenex/adaptors/_base.py index ee604342..9fd322c0 100644 --- a/src/scenex/adaptors/_base.py +++ b/src/scenex/adaptors/_base.py @@ -22,6 +22,7 @@ TImage = TypeVar("TImage", bound="model.Image", covariant=True) TVolume = TypeVar("TVolume", bound="model.Volume", covariant=True) TPoints = TypeVar("TPoints", bound="model.Points", covariant=True) +TMesh = TypeVar("TMesh", bound="model.Mesh", covariant=True) TCanvas = TypeVar("TCanvas", bound="model.Canvas", covariant=True) TView = TypeVar("TView", bound="model.View", covariant=True) TLayout = TypeVar("TLayout", bound="model.Layout", covariant=True) @@ -162,6 +163,17 @@ def _snx_set_scaling(self, arg: model.ScalingMode, /) -> None: ... def _snx_set_antialias(self, arg: float, /) -> None: ... +class MeshAdaptor(NodeAdaptor[TMesh, TNative]): + """Protocol for a backend Mesh adaptor object.""" + + @abstractmethod + def _snx_set_vertices(self, arg: NDArray) -> None: ... + @abstractmethod + def _snx_set_faces(self, arg: NDArray, /) -> None: ... + @abstractmethod + def _snx_set_color(self, arg: model.Color, /) -> None: ... + + class CanvasAdaptor(SupportsVisibility[TCanvas, TNative]): """Protocol defining the interface for a Canvas adaptor.""" diff --git a/src/scenex/adaptors/_pygfx/__init__.py b/src/scenex/adaptors/_pygfx/__init__.py index 801e9992..72a7875d 100644 --- a/src/scenex/adaptors/_pygfx/__init__.py +++ b/src/scenex/adaptors/_pygfx/__init__.py @@ -4,6 +4,7 @@ from ._camera import Camera from ._canvas import Canvas from ._image import Image +from ._mesh import Mesh from ._node import Node from ._points import Points from ._scene import Scene @@ -14,6 +15,7 @@ "Camera", "Canvas", "Image", + "Mesh", "Node", "Points", "Scene", diff --git a/src/scenex/adaptors/_pygfx/_mesh.py b/src/scenex/adaptors/_pygfx/_mesh.py new file mode 100644 index 00000000..ea99fb14 --- /dev/null +++ b/src/scenex/adaptors/_pygfx/_mesh.py @@ -0,0 +1,50 @@ +from __future__ import annotations + +import logging +from typing import TYPE_CHECKING, Any + +import numpy as np +import pygfx + +from scenex.adaptors._base import MeshAdaptor + +from ._node import Node + +if TYPE_CHECKING: + import cmap + from numpy.typing import ArrayLike + + from scenex import model + +logger = logging.getLogger("scenex.adaptors.pygfx") + + +class Mesh(Node, MeshAdaptor): + """pygfx backend adaptor for an Mesh node.""" + + _pygfx_node: pygfx.Mesh + _material: pygfx.MeshBasicMaterial + _geometry: pygfx.Geometry + + def __init__(self, mesh: model.Mesh, **backend_kwargs: Any) -> None: + self._model = mesh + self._material = pygfx.MeshBasicMaterial( + color=mesh.color.rgba if mesh.color else (1, 1, 1, 1) + ) + self._geometry = pygfx.Geometry( + positions=np.asarray(mesh.vertices, dtype=np.float32), + indices=np.asarray(mesh.faces, dtype=np.int32), + ) + self._pygfx_node = pygfx.Mesh(self._geometry, self._material) + + def _snx_set_vertices(self, arg: ArrayLike) -> None: + return + self._geometry.positions = np.asarray(arg) + + def _snx_set_faces(self, arg: ArrayLike) -> None: + return + self._geometry.indices = np.asarray(arg) + + def _snx_set_color(self, arg: cmap.Color) -> None: + return + self._material.color = arg.rgba diff --git a/src/scenex/adaptors/_vispy/__init__.py b/src/scenex/adaptors/_vispy/__init__.py index 1277e7ce..58790b79 100644 --- a/src/scenex/adaptors/_vispy/__init__.py +++ b/src/scenex/adaptors/_vispy/__init__.py @@ -4,6 +4,7 @@ from ._camera import Camera from ._canvas import Canvas from ._image import Image +from ._mesh import Mesh from ._node import Node from ._points import Points from ._scene import Scene @@ -14,6 +15,7 @@ "Camera", "Canvas", "Image", + "Mesh", "Node", "Points", "Scene", diff --git a/src/scenex/adaptors/_vispy/_mesh.py b/src/scenex/adaptors/_vispy/_mesh.py new file mode 100644 index 00000000..462d9398 --- /dev/null +++ b/src/scenex/adaptors/_vispy/_mesh.py @@ -0,0 +1,46 @@ +from __future__ import annotations + +import logging +from typing import TYPE_CHECKING, Any + +import numpy as np +import vispy.color +import vispy.scene +import vispy.visuals + +from scenex.adaptors._base import MeshAdaptor + +from ._node import Node + +if TYPE_CHECKING: + import cmap + from numpy.typing import ArrayLike + + from scenex import model + +logger = logging.getLogger("scenex.adaptors.pygfx") + + +class Mesh(Node, MeshAdaptor): + """vispy backend adaptor for an Mesh node.""" + + _vispy_node: vispy.visuals.MeshVisual + + def __init__(self, mesh: model.Mesh, **backend_kwargs: Any) -> None: + self._vispy_node = vispy.scene.Mesh( + color=vispy.color.Color(mesh.color.hex if mesh.color else "#ffffff"), + vertices=np.asarray(mesh.vertices, dtype=np.float32), + faces=np.asarray(mesh.faces, dtype=np.int32), + ) + + def _snx_set_vertices(self, arg: ArrayLike) -> None: + return + self._geometry.positions = np.asarray(arg) + + def _snx_set_faces(self, arg: ArrayLike) -> None: + return + self._geometry.indices = np.asarray(arg) + + def _snx_set_color(self, arg: cmap.Color) -> None: + return + self._material.color = arg.rgba diff --git a/src/scenex/model/__init__.py b/src/scenex/model/__init__.py index 8ba0a834..b23dc923 100644 --- a/src/scenex/model/__init__.py +++ b/src/scenex/model/__init__.py @@ -17,6 +17,7 @@ from ._layout import Layout from ._nodes.camera import Camera, CameraType from ._nodes.image import Image, InterpolationMode +from ._nodes.mesh import Mesh from ._nodes.node import AnyNode, BlendMode, Node from ._nodes.points import Points, ScalingMode, SymbolName from ._nodes.scene import Scene @@ -36,6 +37,7 @@ "Image", "InterpolationMode", "Layout", + "Mesh", "Node", "Points", "RenderMode", diff --git a/src/scenex/model/_nodes/mesh.py b/src/scenex/model/_nodes/mesh.py new file mode 100644 index 00000000..2b1768db --- /dev/null +++ b/src/scenex/model/_nodes/mesh.py @@ -0,0 +1,48 @@ +from __future__ import annotations + +from typing import TYPE_CHECKING, Any, Literal + +import numpy as np +from cmap import Color +from pydantic import Field, computed_field + +from .node import AABB, Node + +if TYPE_CHECKING: + from scenex.app.events._events import Ray + + +class Mesh(Node): + """A surface of triangular faces. + + Each face is defined by a 3-tuple of indices into a list of nD vertices. + """ + + node_type: Literal["mesh"] = "mesh" + + # numpy array of 2D/3D vertices, shape (N, 2) or (N, 3) + vertices: Any = Field(default=None, repr=False, exclude=True) + # Note that the normal vector of each face (v1, v2, v3) is given by + # n = (v2 - v1) x (v3 - v1). + faces: Any = Field(default=None, repr=False, exclude=True) + + # TODO: There are many different ways to color a mesh. E.g. + # - per-face color + # - per-vertex color + # - texture mapping + color: Color | None = Field( + default=Color("white"), description="The color of the mesh." + ) + + @computed_field # type: ignore[prop-decorator] + @property # TODO: Cache? + def bounding_box(self) -> AABB: + arr = np.asarray(self.vertices) + return ( + tuple(float(d) for d in np.min(arr, axis=0)), + tuple(float(d) for d in np.max(arr, axis=0)), + ) # type: ignore + + def passes_through(self, ray: Ray) -> float | None: + # TODO + return None From 6dd4335ca41115def296d16a175c4e3d0ba89424 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Thu, 2 Oct 2025 17:25:47 -0500 Subject: [PATCH 118/120] Add basic passes-through implementation I don't really understand it though :) --- src/scenex/model/_nodes/mesh.py | 40 ++++++++++++++++++++++++-- tests/model/_nodes/test_mesh.py | 51 +++++++++++++++++++++++++++++++++ 2 files changed, 89 insertions(+), 2 deletions(-) create mode 100644 tests/model/_nodes/test_mesh.py diff --git a/src/scenex/model/_nodes/mesh.py b/src/scenex/model/_nodes/mesh.py index 2b1768db..fe5d49fb 100644 --- a/src/scenex/model/_nodes/mesh.py +++ b/src/scenex/model/_nodes/mesh.py @@ -44,5 +44,41 @@ def bounding_box(self) -> AABB: ) # type: ignore def passes_through(self, ray: Ray) -> float | None: - # TODO - return None + # Möller-Trumbore intersection algorithm, vectorized over all triangles + # Adapted from https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm#C++_implementation + + # TODO: Better documentation. I don't yet understand the math + e1 = self.vertices[self.faces[:, 1]] - self.vertices[self.faces[:, 0]] + e2 = self.vertices[self.faces[:, 2]] - self.vertices[self.faces[:, 0]] + # Ignore triangles parallel to the ray + ray_cross_e2 = np.cross(ray.direction, e2) + # Vectorized version of row-wise dot product of ray_cross_e2 and e1 + det = np.sum(ray_cross_e2 * e1, axis=1) + parallel_triangles = np.isclose(det, 0) + + # Refactor variables to avoid parallel triangles + e1 = e1[~parallel_triangles] + e2 = e2[~parallel_triangles] + ray_cross_e2 = ray_cross_e2[~parallel_triangles] + det = det[~parallel_triangles] + v1 = self.vertices[self.faces[:, 0]][~parallel_triangles] + + inv_det = 1 / det + s = ray.origin - v1 + u = inv_det * np.sum(s * ray_cross_e2, axis=1) + + s_cross_e1 = np.cross(s, e1) + v = inv_det * np.sum(ray.direction * s_cross_e1, axis=1) + + intersecting = (u >= 0) & (v >= 0) & (u + v < 1) + + if not np.any(intersecting): + return None + inv_det = inv_det[intersecting] + e2 = e2[intersecting] + s_cross_e1 = s_cross_e1[intersecting] + + t = inv_det * np.sum(e2 * s_cross_e1, axis=1) + print(f"{ray.origin}: {t}") + + return float(np.min(t)) diff --git a/tests/model/_nodes/test_mesh.py b/tests/model/_nodes/test_mesh.py new file mode 100644 index 00000000..2fca4568 --- /dev/null +++ b/tests/model/_nodes/test_mesh.py @@ -0,0 +1,51 @@ +import cmap +import numpy as np +import pytest + +import scenex as snx +from scenex import Mesh +from scenex.app.events import Ray + + +@pytest.fixture +def mesh() -> snx.Mesh: + vertices = np.array( + [ + [0, 0, 0], # 0 + [1, 0, 0], # 1 + [0, 1, 0], # 2 + ] + ) + faces = np.array( + [ + [0, 1, 2], + ] + ) + return snx.Mesh(vertices=vertices, faces=faces, color=cmap.Color("red")) + + +def test_bounding_box(mesh: snx.Mesh) -> None: + exp_bounding_box = np.asarray(((0, 0, 0), (1, 1, 0))) + assert np.array_equal(exp_bounding_box, mesh.bounding_box) + + +def test_passes_through(mesh: Mesh) -> None: + # Check a ray that passes through the mesh hits + ray = Ray(origin=(0.25, 0.25, 1), direction=(0, 0, -1)) + assert mesh.passes_through(ray) == 1 + + # Check a ray that grazes the left edge of the image hits + ray = Ray(origin=(0, 0.5, 1), direction=(0, 0, -1)) + assert mesh.passes_through(ray) == 1 + + # Check a ray that grazes the right edge of the image misses + ray = Ray(origin=(0.5, 0.5, 1), direction=(0, 0, -1)) + assert mesh.passes_through(ray) is None + + # Check a ray that does not pass through the image misses + ray = Ray(origin=(-50, -50, 1), direction=(0, 0, -1)) + assert mesh.passes_through(ray) is None + + # Check a ray that is perpendicular to the image misses + ray = Ray(origin=(0, 0, 0), direction=(-1, 0, 0)) + assert mesh.passes_through(ray) is None From 5e22dcab903b3ab65b36039b6dce37e9f63eefd5 Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Fri, 3 Oct 2025 14:34:42 -0500 Subject: [PATCH 119/120] Flesh out implementation, add tests --- examples/basic_mesh.py | 110 +++++++++++++++++++--------- src/scenex/adaptors/_pygfx/_mesh.py | 50 +++++++++---- src/scenex/adaptors/_vispy/_mesh.py | 14 ++-- src/scenex/model/_nodes/mesh.py | 86 +++++++++++++++++++--- src/scenex/model/_view.py | 2 +- tests/adaptors/_pygfx/test_mesh.py | 60 +++++++++++++++ tests/adaptors/_vispy/test_mesh.py | 58 +++++++++++++++ 7 files changed, 312 insertions(+), 68 deletions(-) create mode 100644 tests/adaptors/_pygfx/test_mesh.py create mode 100644 tests/adaptors/_vispy/test_mesh.py diff --git a/examples/basic_mesh.py b/examples/basic_mesh.py index 550c1839..6794673f 100644 --- a/examples/basic_mesh.py +++ b/examples/basic_mesh.py @@ -2,47 +2,91 @@ import numpy as np import scenex as snx +from scenex.app.events import ( + Event, + MouseButton, + MouseMoveEvent, + MousePressEvent, +) from scenex.utils.controllers import PanZoomController -try: - from scenex.imgui import add_imgui_controls -except ImportError: - print("imgui not available, skipping imgui controls") - add_imgui_controls = None # type: ignore[assignment] - -vertices = np.array( - [ - [0, 0, 0], # 0 - [1, 0, 0], # 1 - [2, 0, 0], # 2 - [0, 1, 0], # 3 - [1, 1, 0], # 4 - [2, 1, 0], # 5 - [0, 2, 0], # 6 - [1, 2, 0], # 7 - [2, 2, 0], # 8 - ] -) -faces = np.array( - [ - [0, 1, 3], - [1, 2, 5], - [5, 8, 7], - [7, 6, 3], - ] + +# Create a more complex mesh - a grid of vertices +def create_grid_mesh( + size: int = 10, spacing: float = 0.2 +) -> tuple[np.ndarray, np.ndarray]: + """Create a grid mesh with given size and spacing.""" + vertices = [] + faces = [] + + # Create vertices in a grid + for i in range(size): + for j in range(size): + x = i * spacing + y = j * spacing + z = 0.0 + vertices.append([x, y, z]) + + # Create triangular faces + for i in range(size - 1): + for j in range(size - 1): + # Current vertex indices + v0 = i * size + j + v1 = i * size + (j + 1) + v2 = (i + 1) * size + j + v3 = (i + 1) * size + (j + 1) + + # Two triangles per grid square + faces.append([v0, v1, v2]) + faces.append([v1, v3, v2]) + + return np.array(vertices), np.array(faces) + + +# Create the mesh +original_vertices, original_faces = create_grid_mesh(size=15, spacing=0.15) + +mesh = snx.Mesh( + vertices=original_vertices, faces=original_faces, color=cmap.Color("cyan") ) view = snx.View( - scene=snx.Scene( - children=[ - snx.Mesh(vertices=vertices, faces=faces, color=cmap.Color("red")), - ] - ), + scene=snx.Scene(children=[mesh]), camera=snx.Camera(controller=PanZoomController(), interactive=True), ) + +def event_filter(event: Event) -> bool: + """Interactive mesh manipulation based on mouse events.""" + if isinstance(event, MouseMoveEvent): + if intersections := event.world_ray.intersections(view.scene): + # Find mesh intersection + for node, _distance in intersections: + if isinstance(node, snx.Mesh): + # Remove the intersected face + indices = [i for i, _d in node.intersecting_faces(event.world_ray)] + node.faces = np.delete(node.faces, indices, axis=0) + return True + elif isinstance(event, MousePressEvent): + if event.buttons & MouseButton.LEFT: + # Reset the mesh on click + mesh.vertices = original_vertices.copy() + mesh.faces = original_faces.copy() + return True + + return False + + +# Set up the event filter +view.set_event_filter(event_filter) + +# Show and position camera +snx.use("vispy") snx.show(view) -# view.camera.transform = snx.Transform() -view.camera.look_at((1, 1, -1), up=(0, 1, 0)) + +print("Interactive Mesh Demo:") +print("- Move mouse over mesh to delete intersected faces") +print("- Left click to reset all faces") +print("- Use mouse to pan/zoom the camera") snx.run() diff --git a/src/scenex/adaptors/_pygfx/_mesh.py b/src/scenex/adaptors/_pygfx/_mesh.py index ea99fb14..be344cb9 100644 --- a/src/scenex/adaptors/_pygfx/_mesh.py +++ b/src/scenex/adaptors/_pygfx/_mesh.py @@ -23,28 +23,48 @@ class Mesh(Node, MeshAdaptor): """pygfx backend adaptor for an Mesh node.""" _pygfx_node: pygfx.Mesh - _material: pygfx.MeshBasicMaterial - _geometry: pygfx.Geometry def __init__(self, mesh: model.Mesh, **backend_kwargs: Any) -> None: self._model = mesh - self._material = pygfx.MeshBasicMaterial( - color=mesh.color.rgba if mesh.color else (1, 1, 1, 1) + self._pygfx_node = pygfx.Mesh( + material=pygfx.MeshBasicMaterial( + color=mesh.color.rgba if mesh.color else (1, 1, 1, 1) + ), + geometry=pygfx.Geometry( + positions=np.asarray(mesh.vertices, dtype=np.float32), + indices=np.asarray(mesh.faces, dtype=np.uint32), + ), ) - self._geometry = pygfx.Geometry( - positions=np.asarray(mesh.vertices, dtype=np.float32), - indices=np.asarray(mesh.faces, dtype=np.int32), - ) - self._pygfx_node = pygfx.Mesh(self._geometry, self._material) def _snx_set_vertices(self, arg: ArrayLike) -> None: - return - self._geometry.positions = np.asarray(arg) + # Number of vertices unchanged - reuse existing geometry for performance + arg = np.asarray(arg, dtype=np.float32) + geom = self._pygfx_node.geometry + positions: pygfx.resources.Buffer = geom.positions # pyright: ignore + if (data := positions.data) is not None and (arg.shape == data.shape): + data[:, :] = arg + positions.update_range() + # Number of vertices changed - must create new geometry + else: + self._pygfx_node.geometry = pygfx.Geometry( + positions=arg, + indices=geom.indices, # pyright: ignore + ) def _snx_set_faces(self, arg: ArrayLike) -> None: - return - self._geometry.indices = np.asarray(arg) + # Number of faces unchanged - reuse existing geometry for performance + arg = np.asarray(arg, dtype=np.uint32) + geom = self._pygfx_node.geometry + indices: pygfx.resources.Buffer = geom.indices # pyright: ignore + if (data := indices.data) is not None and (arg.shape == data.shape): + data[:, :] = arg + indices.update_range() + # Number of faces changed - must create new geometry + else: + self._pygfx_node.geometry = pygfx.Geometry( + positions=geom.positions, # pyright: ignore + indices=arg, + ) def _snx_set_color(self, arg: cmap.Color) -> None: - return - self._material.color = arg.rgba + self._pygfx_node.material.color = arg.rgba # pyright: ignore diff --git a/src/scenex/adaptors/_vispy/_mesh.py b/src/scenex/adaptors/_vispy/_mesh.py index 462d9398..550ef901 100644 --- a/src/scenex/adaptors/_vispy/_mesh.py +++ b/src/scenex/adaptors/_vispy/_mesh.py @@ -27,20 +27,20 @@ class Mesh(Node, MeshAdaptor): _vispy_node: vispy.visuals.MeshVisual def __init__(self, mesh: model.Mesh, **backend_kwargs: Any) -> None: + self._model = mesh self._vispy_node = vispy.scene.Mesh( color=vispy.color.Color(mesh.color.hex if mesh.color else "#ffffff"), vertices=np.asarray(mesh.vertices, dtype=np.float32), - faces=np.asarray(mesh.faces, dtype=np.int32), + faces=np.asarray(mesh.faces, dtype=np.uint32), ) def _snx_set_vertices(self, arg: ArrayLike) -> None: - return - self._geometry.positions = np.asarray(arg) + self._vispy_node.set_data(vertices=np.asarray(arg), faces=self._model.faces) def _snx_set_faces(self, arg: ArrayLike) -> None: - return - self._geometry.indices = np.asarray(arg) + self._vispy_node.set_data( + vertices=self._model.vertices, faces=np.asarray(arg, dtype=np.uint32) + ) def _snx_set_color(self, arg: cmap.Color) -> None: - return - self._material.color = arg.rgba + self._vispy_node.color = arg.hex diff --git a/src/scenex/model/_nodes/mesh.py b/src/scenex/model/_nodes/mesh.py index fe5d49fb..15772fea 100644 --- a/src/scenex/model/_nodes/mesh.py +++ b/src/scenex/model/_nodes/mesh.py @@ -43,42 +43,104 @@ def bounding_box(self) -> AABB: tuple(float(d) for d in np.max(arr, axis=0)), ) # type: ignore - def passes_through(self, ray: Ray) -> float | None: - # Möller-Trumbore intersection algorithm, vectorized over all triangles - # Adapted from https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm#C++_implementation - - # TODO: Better documentation. I don't yet understand the math + def intersecting_faces(self, ray: Ray) -> list[tuple[int, float]]: + """ + Find all faces that intersect with the given ray. + + Uses the Möller-Trumbore intersection algorithm, vectorized over all triangles. + Adapted from https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm#C++_implementation + + Parameters + ---------- + ray : Ray + The ray to test for intersections. + + Returns + ------- + list[tuple[int, float]] + A list of tuples containing (face_index, distance) for each + intersecting face. Sorted by distance (closest first). + """ + tracked_faces = np.arange(len(self.faces)) + + # Suppose the triangle is defined by vertices v1, v2, v3 + # Barycentric coordinates are given by + # P = (1 - u - v)*v1 + u*v2 + v*v3, + # = v1 + u(v2 - v1) + v(v3 - v1) + # = v1 + u*e1 + v*e2 + # But the intersection point is also given by our ray equation: + # P = ray.origin + t*ray.direction + # So we need to solve the equation + # ray.origin + t*ray.direction = v1 + u*e1 + v*e2 + # Rearranging: + # ray.origin - v1 = -t*ray.direction + u*e1 + v*e2 e1 = self.vertices[self.faces[:, 1]] - self.vertices[self.faces[:, 0]] e2 = self.vertices[self.faces[:, 2]] - self.vertices[self.faces[:, 0]] - # Ignore triangles parallel to the ray + + # First, cull all triangles parallel to the ray + # We compute the determinant (scalar triple product) for this ray_cross_e2 = np.cross(ray.direction, e2) - # Vectorized version of row-wise dot product of ray_cross_e2 and e1 + # NOTE: Vectorized version of row-wise dot product of ray_cross_e2 and e1 det = np.sum(ray_cross_e2 * e1, axis=1) parallel_triangles = np.isclose(det, 0) - # Refactor variables to avoid parallel triangles + # Remove parallel triangles from consideration e1 = e1[~parallel_triangles] e2 = e2[~parallel_triangles] ray_cross_e2 = ray_cross_e2[~parallel_triangles] det = det[~parallel_triangles] v1 = self.vertices[self.faces[:, 0]][~parallel_triangles] + tracked_faces = tracked_faces[~parallel_triangles] + # We can use Cramer's Rule to solve for t, u, v + # (We solve for u, v first to check if the intersection is within the triangle) + # + # u = (1/det) * scalar_triple_product(ray.direction, s, e2) inv_det = 1 / det s = ray.origin - v1 u = inv_det * np.sum(s * ray_cross_e2, axis=1) - + # v = (1/det) * scalar_triple_product(ray.direction, e1, s) s_cross_e1 = np.cross(s, e1) v = inv_det * np.sum(ray.direction * s_cross_e1, axis=1) + # Cull triangles where the intersection is outside the triangle intersecting = (u >= 0) & (v >= 0) & (u + v < 1) if not np.any(intersecting): - return None + return [] + + # Get the indices and data for intersecting triangles + tracked_faces = tracked_faces[intersecting] inv_det = inv_det[intersecting] e2 = e2[intersecting] s_cross_e1 = s_cross_e1[intersecting] + # t = (1/det) * scalar_triple_product(s, e1, e2) t = inv_det * np.sum(e2 * s_cross_e1, axis=1) - print(f"{ray.origin}: {t}") - return float(np.min(t)) + # Create list of (face_index, distance) tuples and sort by distance + intersections = list(zip(tracked_faces, t, strict=True)) + intersections.sort(key=lambda x: x[1]) # Sort by distance + + return intersections + + def passes_through(self, ray: Ray) -> float | None: + """ + Check if the ray passes through this mesh and return the closest distance. + + Parameters + ---------- + ray : Ray + The ray to test for intersection. + + Returns + ------- + float | None + The distance to the closest intersection, or None if no intersection. + """ + intersections = self.intersecting_faces(ray) + if not intersections: + return None + + # Return the closest intersection distance + return float(intersections[0][1]) diff --git a/src/scenex/model/_view.py b/src/scenex/model/_view.py index 11a7e75c..34cad94b 100644 --- a/src/scenex/model/_view.py +++ b/src/scenex/model/_view.py @@ -135,7 +135,7 @@ def filter_event(self, event: Event) -> bool: ) # Return False. We assume that if the user wanted to block future # processing, they'd be less likely to forget a boolean return. - # Further, allowing downstream processing is a clear sign to the author + # Further, allowing downstream processing is a clear sign to they author # that they forgot to block propagation. handled = False return handled diff --git a/tests/adaptors/_pygfx/test_mesh.py b/tests/adaptors/_pygfx/test_mesh.py new file mode 100644 index 00000000..b4c79572 --- /dev/null +++ b/tests/adaptors/_pygfx/test_mesh.py @@ -0,0 +1,60 @@ +from __future__ import annotations + +import cmap +import numpy as np +import pytest + +import scenex as snx +import scenex.adaptors._pygfx as adaptors +from scenex.adaptors._auto import get_adaptor_registry + + +@pytest.fixture +def mesh() -> snx.Mesh: + vertices = np.asarray( + [ + [0, 0, 0], # 0 + [1, 0, 0], # 1 + [0, 1, 0], # 2 + [1, 1, 0], # 3 + ] + ) + faces = np.asarray( + [ + [0, 1, 2], # 0 + [1, 3, 2], # 1 + ] + ) + return snx.Mesh( + vertices=vertices, + faces=faces, + color=cmap.Color("red"), + ) + + +@pytest.fixture +def adaptor(mesh: snx.Mesh) -> adaptors.Mesh: + adaptor = get_adaptor_registry().get_adaptor(mesh, create=True) + assert isinstance(adaptor, adaptors.Mesh) + return adaptor + + +def test_data(mesh: snx.Mesh, adaptor: adaptors.Mesh) -> None: + """Tests that changing the model changes the view (the PyGfx node).""" + geom = adaptor._pygfx_node.geometry + mat = adaptor._pygfx_node.material + assert geom is not None + assert mat is not None + + assert np.array_equal(mesh.vertices, geom.positions.data) + mesh.vertices = mesh.vertices * 100 + assert np.array_equal(mesh.vertices, geom.positions.data) + + assert np.array_equal(mesh.faces, geom.indices.data) + mesh.faces = np.asarray([[0, 2, 3], [3, 1, 0]]) + assert np.array_equal(mesh.faces, geom.indices.data) + + assert mesh.color is not None + assert np.array_equal(mesh.color.rgba, mat.color.rgba) # pyright: ignore + mesh.color = cmap.Color("blue") + assert np.array_equal(mesh.color.rgba, mat.color.rgba) # pyright: ignore diff --git a/tests/adaptors/_vispy/test_mesh.py b/tests/adaptors/_vispy/test_mesh.py new file mode 100644 index 00000000..6b572aee --- /dev/null +++ b/tests/adaptors/_vispy/test_mesh.py @@ -0,0 +1,58 @@ +from __future__ import annotations + +import cmap +import numpy as np +import pytest + +import scenex as snx +import scenex.adaptors._vispy as adaptors +from scenex.adaptors._auto import get_adaptor_registry + + +@pytest.fixture +def mesh() -> snx.Mesh: + vertices = np.asarray( + [ + [0, 0, 0], # 0 + [1, 0, 0], # 1 + [0, 1, 0], # 2 + [1, 1, 0], # 3 + ] + ) + faces = np.asarray( + [ + [0, 1, 2], # 0 + [1, 3, 2], # 1 + ] + ) + return snx.Mesh( + vertices=vertices, + faces=faces, + color=cmap.Color("red"), + ) + + +@pytest.fixture +def adaptor(mesh: snx.Mesh) -> adaptors.Mesh: + adaptor = get_adaptor_registry().get_adaptor(mesh, create=True) + assert isinstance(adaptor, adaptors.Mesh) + return adaptor + + +def test_data(mesh: snx.Mesh, adaptor: adaptors.Mesh) -> None: + """Tests that changing the model changes the view (the Vispy node).""" + mesh_data = adaptor._vispy_node.mesh_data + assert mesh_data is not None + + assert np.array_equal(mesh.vertices, np.asarray(mesh_data.get_vertices())) + mesh.vertices = mesh.vertices * 100 + assert np.array_equal(mesh.vertices, np.asarray(mesh_data.get_vertices())) + + assert np.array_equal(mesh.faces, np.asarray(mesh_data.get_faces())) + mesh.faces = np.asarray([[0, 2, 3], [3, 1, 0]]) + assert np.array_equal(mesh.faces, np.asarray(mesh_data.get_faces())) + + assert mesh.color is not None + assert np.array_equal(mesh.color.rgba, adaptor._vispy_node.color.rgba) + mesh.color = cmap.Color("blue") + assert np.array_equal(mesh.color.rgba, adaptor._vispy_node.color.rgba) From fb45ccd36ba8e808b77e456c2aa98e804256659c Mon Sep 17 00:00:00 2001 From: Gabriel Selzer Date: Tue, 7 Oct 2025 13:27:42 -0500 Subject: [PATCH 120/120] Fix mesh tests --- tests/adaptors/_vispy/test_mesh.py | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/tests/adaptors/_vispy/test_mesh.py b/tests/adaptors/_vispy/test_mesh.py index 6b572aee..984bbc12 100644 --- a/tests/adaptors/_vispy/test_mesh.py +++ b/tests/adaptors/_vispy/test_mesh.py @@ -41,17 +41,29 @@ def adaptor(mesh: snx.Mesh) -> adaptors.Mesh: def test_data(mesh: snx.Mesh, adaptor: adaptors.Mesh) -> None: """Tests that changing the model changes the view (the Vispy node).""" - mesh_data = adaptor._vispy_node.mesh_data - assert mesh_data is not None - - assert np.array_equal(mesh.vertices, np.asarray(mesh_data.get_vertices())) + # Change vertices + assert np.array_equal( + mesh.vertices, + np.asarray(adaptor._vispy_node.mesh_data.get_vertices()), # pyright: ignore + ) mesh.vertices = mesh.vertices * 100 - assert np.array_equal(mesh.vertices, np.asarray(mesh_data.get_vertices())) + assert np.array_equal( + mesh.vertices, + np.asarray(adaptor._vispy_node.mesh_data.get_vertices()), # pyright: ignore + ) - assert np.array_equal(mesh.faces, np.asarray(mesh_data.get_faces())) + # Change faces + assert np.array_equal( + mesh.vertices, + np.asarray(adaptor._vispy_node.mesh_data.get_vertices()), # pyright: ignore + ) mesh.faces = np.asarray([[0, 2, 3], [3, 1, 0]]) - assert np.array_equal(mesh.faces, np.asarray(mesh_data.get_faces())) + assert np.array_equal( + mesh.vertices, + np.asarray(adaptor._vispy_node.mesh_data.get_vertices()), # pyright: ignore + ) + # Change color assert mesh.color is not None assert np.array_equal(mesh.color.rgba, adaptor._vispy_node.color.rgba) mesh.color = cmap.Color("blue")