Merge pull request silvia-odwyer#179 from volbot/master

photon::transform additions

Author: silvia-odwyer

README.md

@@ -240,6 +240,7 @@ Contributors include (be sure to add yourself to the list if you submitted a PR)
 * **bboshoven** - [@bboshoven](https://github.com/bboshoven)
 * **benliao** - [@benliao](https://github.com/benliao)
 * **Fineshop Design** - [@fineshop](https://github.com/fineshop)
+* **volbot** - [@volbot](https://github.com/volbot)
 * **Future You(?)** - (See Contributing above)
 
 ## License

crate/examples/rotate.rs

@@ -0,0 +1,51 @@
+extern crate image;
+extern crate photon_rs;
+
+use instant::Instant;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let file_name = "crate/examples/input_images/daisies_fuji.jpg";
+    println!("file name = {}", file_name);
+
+    // // Open the image
+    let img = photon_rs::native::open_image(file_name)?;
+    let start = Instant::now();
+    // Seam Carver
+    let (w, h) = (img.get_width(), img.get_height());
+    println!("original = w: {}, h: {}", w, h);
+    let angles = vec![
+        60.0,  //   60.0 = q1:60.0
+        135.0, //  135.0 = q2:45.0
+        562.5, //  517.5 = q3:22.5
+        -30.0, //  -30.0 = q4:60.0
+    ];
+    let operations = angles.len();
+    let mut results = Vec::new();
+    for i in 0..operations {
+        let angle = angles[i];
+        let result = photon_rs::transform::rotate(&img, angles[i]);
+        println!(
+            "after rotate({}) = w: {}, h: {}",
+            angle,
+            result.get_width(),
+            result.get_height()
+        );
+        results.push(result);
+    }
+
+    // Write all outputs in JPEG format.
+    for i in (0..operations).rev() {
+        photon_rs::native::save_image(
+            results.remove(i),
+            &format!("output_rotate_{}.jpg", i + 1),
+        )?;
+    }
+    let end = Instant::now();
+    println!(
+        "Took {} seconds to rotate {} images.",
+        (end - start).as_secs_f64(),
+        operations
+    );
+
+    Ok(())
+}

crate/examples/shear.rs

@@ -0,0 +1,43 @@
+extern crate image;
+extern crate photon_rs;
+
+use instant::Instant;
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let file_name = "crate/examples/input_images/daisies_fuji.jpg";
+    println!("file name = {}", file_name);
+
+    // // Open the image
+    let img = photon_rs::native::open_image(file_name)?;
+    let start = Instant::now();
+    // Seam Carver
+    let (w, h) = (img.get_width(), img.get_height());
+    println!("original = w: {}, h: {}", w, h);
+    let shear = 1.;
+
+    let res1 = photon_rs::transform::shearx(&img, shear);
+    println!(
+        "after shearx({}) = w: {}, h: {}",
+        shear,
+        res1.get_width(),
+        res1.get_height()
+    );
+    let res2 = photon_rs::transform::sheary(&img, shear);
+    println!(
+        "after sheary({}) = w: {}, h: {}",
+        shear,
+        res2.get_width(),
+        res2.get_height()
+    );
+
+    // Write both outputs in JPEG format.
+    photon_rs::native::save_image(res1, "output_shearx.jpg")?;
+    photon_rs::native::save_image(res2, "output_sheary.jpg")?;
+    let end = Instant::now();
+    println!(
+        "Took {} seconds to shear 2 images.",
+        (end - start).as_secs_f64()
+    );
+
+    Ok(())
+}