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| <!DOCTYPE html> | ||
| <html lang="en"> | ||
| <head> | ||
| <meta charset="utf-8"> | ||
| <title>JSDoc: Source: layers/geojsonLayer.js</title> | ||
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| <script src="scripts/prettify/prettify.js"> </script> | ||
| <script src="scripts/prettify/lang-css.js"> </script> | ||
| <!--[if lt IE 9]> | ||
| <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script> | ||
| <![endif]--> | ||
| <link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css"> | ||
| <link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css"> | ||
| </head> | ||
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| <body> | ||
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| <div id="main"> | ||
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| <h1 class="page-title">Source: layers/geojsonLayer.js</h1> | ||
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| <section> | ||
| <article> | ||
| <pre class="prettyprint source linenums"><code>// logic for adding geojson features to the gridviz viewer | ||
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| import { Color, Group } from "three"; | ||
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| import { Line2 } from "../../lib/threejs/lines/Line2"; | ||
| import { LineGeometry } from "../../lib/threejs/lines/LineGeometry"; | ||
| import { LineMaterial } from "../../lib/threejs/lines/LineMaterial"; | ||
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| import * as THREE from "three/src/constants"; | ||
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| let lineMaterial; // linematerial used for threejs webgl lines | ||
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| /** | ||
| * | ||
| * @description Add geojson features to three.js scene. Currently accepts polygon, multipolygon or linestring | ||
| * @param {Array} features Geojson feature array | ||
| * @param {Object} viewer gridviz viewer | ||
| * @function addGeoJsonToScene | ||
| */ | ||
| let layerZ = 1; | ||
| export function addGeoJsonToScene(features, viewer) { | ||
| layerZ = layerZ + 0.002; // increment draw order so that latest geojson is added on top of the rest. | ||
| let geojsonGroup = new Group(); | ||
| geojsonGroup.renderOrder = 999; //always on top of grid | ||
| // GEOJSON to ThreeJS | ||
| for (let i = 0; i < features.length; i++) { | ||
| let feature = features[i]; | ||
| let coords = []; | ||
| for (let c = 0; c < feature.geometry.coordinates.length; c++) { | ||
| if (feature.geometry.type == "Polygon") { | ||
| let coords = []; | ||
| for (let s = 0; s < feature.geometry.coordinates[c].length; s++) { | ||
| let xyz; | ||
| if (viewer.zerosRemoved_) { | ||
| let d = Number('1E' + viewer.zerosRemoved_); | ||
| xyz = { | ||
| x: feature.geometry.coordinates[c][s][0] / d, | ||
| y: feature.geometry.coordinates[c][s][1] / d, | ||
| z: layerZ | ||
| }; | ||
| } else { | ||
| xyz = { | ||
| x: feature.geometry.coordinates[c][s][0], | ||
| y: feature.geometry.coordinates[c][s][1], | ||
| z: layerZ | ||
| }; | ||
| } | ||
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| coords.push(xyz); | ||
| } | ||
| if (coords.length > 0) { | ||
| geojsonGroup.add(createLineFromCoords(coords, viewer.lineColor_, viewer.lineWidth_)); | ||
| } | ||
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| } else if (feature.geometry.type == "MultiPolygon") { | ||
| for (let s = 0; s < feature.geometry.coordinates[c].length; s++) { | ||
| //each polygon in multipolygon: | ||
| let coords = []; | ||
| for ( | ||
| let m = 0; | ||
| m < feature.geometry.coordinates[c][s].length; | ||
| m++ | ||
| ) { | ||
| let xyz; | ||
| if (viewer.zerosRemoved_) { | ||
| let d = Number('1E' + viewer.zerosRemoved_); | ||
| xyz = { | ||
| x: feature.geometry.coordinates[c][s][m][0] / d, | ||
| y: feature.geometry.coordinates[c][s][m][1] / d, | ||
| z: layerZ | ||
| }; | ||
| } else { | ||
| xyz = { | ||
| x: feature.geometry.coordinates[c][s][m][0], | ||
| y: feature.geometry.coordinates[c][s][m][1], | ||
| z: layerZ | ||
| }; | ||
| } | ||
| coords.push(xyz); | ||
| } | ||
| if (coords.length > 0) { | ||
| geojsonGroup.add(createLineFromCoords(coords, viewer.lineColor_, viewer.lineWidth_)); | ||
| } | ||
| } | ||
| } else if (feature.geometry.type == "LineString") { | ||
| let xyz; | ||
| if (viewer.zerosRemoved_) { | ||
| let d = Number('1E' + viewer.zerosRemoved_); | ||
| xyz = { | ||
| x: feature.geometry.coordinates[c][0] / d, | ||
| y: feature.geometry.coordinates[c][1] / d, | ||
| z: layerZ | ||
| }; | ||
| } else { | ||
| xyz = { | ||
| x: feature.geometry.coordinates[c][0], | ||
| y: feature.geometry.coordinates[c][1], | ||
| z: layerZ | ||
| }; | ||
| } | ||
| coords.push(xyz); | ||
| } | ||
| } | ||
| if (feature.geometry.type = "LineString") { | ||
| if (coords.length > 0) { | ||
| geojsonGroup.add(createLineFromCoords(coords, viewer.lineColor_, viewer.lineWidth_)); | ||
| } | ||
| } | ||
| } | ||
| viewer.scene.add(geojsonGroup); | ||
| } | ||
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| /** | ||
| * @description Build threejs line geometry from world coordinates | ||
| * @function createLineFromCoords | ||
| * @param coords {Array} array of coord objects with values x,y,z | ||
| * @param lineColor {String | Number} accepted color value for geojson lines | ||
| * @param lineWidth {Number} Geojson line width. Default: 0.0012 | ||
| * @returns {Line2} | ||
| */ | ||
| function createLineFromCoords(coords, lineColor, lineWidth) { | ||
| let line_geom = new LineGeometry(); | ||
| let positions = []; | ||
| let colors = []; | ||
| let color = new Color(lineColor); | ||
| for (var i = 0; i < coords.length; i++) { | ||
| positions.push(coords[i].x, coords[i].y, layerZ); | ||
| colors.push(color.r, color.g, color.b); | ||
| } | ||
| line_geom.setPositions(positions); | ||
| line_geom.setColors(colors); | ||
| if (!lineMaterial) { | ||
| lineMaterial = new LineMaterial({ | ||
| linewidth: lineWidth, | ||
| vertexColors: THREE.VertexColors | ||
| }); | ||
| } | ||
| //line2 allows custom linewidth (but not currently included in main threejs build) | ||
| return new Line2(line_geom, lineMaterial); | ||
| }</code></pre> | ||
| </article> | ||
| </section> | ||
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| </div> | ||
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| <nav> | ||
| <h2><a href="index.html">Home</a></h2><h3>Global</h3><ul><li><a href="global.html#addButtonEvents">addButtonEvents</a></li><li><a href="global.html#addCellCountToDOM">addCellCountToDOM</a></li><li><a href="global.html#addChangeEventToSizeFieldDropdown">addChangeEventToSizeFieldDropdown</a></li><li><a href="global.html#addEventListeners">addEventListeners</a></li><li><a href="global.html#addGeoJson">addGeoJson</a></li><li><a href="global.html#addGeoJsonToScene">addGeoJsonToScene</a></li><li><a href="global.html#addHeadingsContainerToDOM">addHeadingsContainerToDOM</a></li><li><a href="global.html#addHomeButtonToDOM">addHomeButtonToDOM</a></li><li><a href="global.html#addMouseEventsToView">addMouseEventsToView</a></li><li><a href="global.html#addNuts2jsonToScene">addNuts2jsonToScene</a></li><li><a href="global.html#addPanAndZoom">addPanAndZoom</a></li><li><a href="global.html#addPointsToScene">addPointsToScene</a></li><li><a href="global.html#addResizeEvent">addResizeEvent</a></li><li><a href="global.html#addSelectorsContainerToDOM">addSelectorsContainerToDOM</a></li><li><a href="global.html#addSourcesToDOM">addSourcesToDOM</a></li><li><a href="global.html#addSubtitleToDOM">addSubtitleToDOM</a></li><li><a href="global.html#addTitleToDOM">addTitleToDOM</a></li><li><a href="global.html#animate">animate</a></li><li><a href="global.html#build">build</a></li><li><a href="global.html#createCamera">createCamera</a></li><li><a href="global.html#createColorSchemeDropdown">createColorSchemeDropdown</a></li><li><a href="global.html#createLabelRenderer">createLabelRenderer</a></li><li><a href="global.html#createLineFromCoords">createLineFromCoords</a></li><li><a href="global.html#createRaycaster">createRaycaster</a></li><li><a href="global.html#createScene">createScene</a></li><li><a href="global.html#createTooltipContainer">createTooltipContainer</a></li><li><a href="global.html#createWebGLRenderer">createWebGLRenderer</a></li><li><a href="global.html#defineColorScale">defineColorScale</a></li><li><a href="global.html#defineFar">defineFar</a></li><li><a href="global.html#defineGridConfig">defineGridConfig</a></li><li><a href="global.html#defineNear">defineNear</a></li><li><a href="global.html#definePointSize">definePointSize</a></li><li><a href="global.html#defineRaycasterThreshold">defineRaycasterThreshold</a></li><li><a href="global.html#defineSizeScale">defineSizeScale</a></li><li><a href="global.html#fragmentShader">fragmentShader</a></li><li><a href="global.html#loadGrid">loadGrid</a></li><li><a href="global.html#loadNuts2json">loadNuts2json</a></li><li><a href="global.html#redefineCamera">redefineCamera</a></li><li><a href="global.html#requestGrid">requestGrid</a></li><li><a href="global.html#setCamera">setCamera</a></li><li><a href="global.html#updateColorScaleFunction">updateColorScaleFunction</a></li><li><a href="global.html#updatePointsColors">updatePointsColors</a></li><li><a href="global.html#updatePointsSizes">updatePointsSizes</a></li><li><a href="global.html#updateTooltip">updateTooltip</a></li><li><a href="global.html#validateInputs">validateInputs</a></li><li><a href="global.html#vertexShader">vertexShader</a></li><li><a href="global.html#viewer">viewer</a></li><li><a href="global.html#viewWholeGrid">viewWholeGrid</a></li><li><a href="global.html#zoom">zoom</a></li></ul> | ||
| </nav> | ||
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| <br class="clear"> | ||
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| <footer> | ||
| Documentation generated by <a href="https://github.com/jsdoc/jsdoc">JSDoc 3.6.6</a> on Wed Dec 09 2020 16:42:27 GMT+0100 (Central European Standard Time) | ||
| </footer> | ||
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| <script> prettyPrint(); </script> | ||
| <script src="scripts/linenumber.js"> </script> | ||
| </body> | ||
| </html> |
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