Fixed capture

src/programs/viewer.rs

@@ -58,6 +58,8 @@ fn main() {
     // Set verbose flag
     verbose_log::set(matches.occurrences_of("verbose") > 0);
 
+    let mut capture_count = 0;
+
     use std::f64::{MIN, MAX};
     let mut bbox = BoundingBox3::new(
         Vector3::new(MAX, MAX, MAX),
@@ -177,7 +179,25 @@ fn main() {
                         camera.target.x(), camera.target.y(), camera.target.z());
                     println!("\tUp:       ({}, {}, {})",
                         camera.up.x(), camera.up.y(), camera.up.z());
-                }
+                },
+
+                Event::WindowEvent {
+                    event: WindowEvent::KeyboardInput {
+                        input: glutin::KeyboardInput {
+                            virtual_keycode: Some(VirtualKeyCode::C),
+                            state: ElementState::Pressed, ..
+                        }, ..
+                    }, ..
+
+                } => {
+
+                    // Make a screenshot
+                    let size = renderer.gl_window().get_inner_size().unwrap();
+                    let cap = renderer.capture(size);
+                    cap.save(format!("capture-{}.png", capture_count)).unwrap();
+                    capture_count += 1;
+
+                },
 
                 _ => (),
             }

src/renderer.rs

@@ -223,7 +223,8 @@ impl Renderer {
     /// Returns a RgbaImageData of the corresponding frame.
     pub fn capture_rgba_image_data(&self, dimensions: LogicalSize) -> RgbaImageData {
 
-        let dimensions: (u32, u32) = dimensions.into();
+        let dpi = self.gl_window().get_hidpi_factor();
+        let dimensions: (u32, u32) = dimensions.to_physical(dpi).into();
 
         let rect = Rect {
             left: 0,