clean up example

examples/input/gpu_picking.rs

@@ -26,7 +26,7 @@ fn main() {
  // Add the plugin
  .add_plugin(GpuPickingPlugin)
  .add_systems(Startup, setup)
- .add_systems(Update, (mouse_picking, save_buffer_to_file, move_cube))
+ .add_systems(Update, (mouse_picking, move_cube))
  .run();
 }
 
@@ -88,7 +88,7 @@ fn setup(
  GpuPickingMesh,
  ));
 
- // opaque cube
+ // This cube will move from left to right. It shows that picking works correctly when things are moving.
  commands.spawn((
  PbrBundle {
  mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
@@ -172,38 +172,6 @@ fn mouse_picking(
  }
 }
 
-// TODO remove before merging, this is just for testing purposes
-fn save_buffer_to_file(
- keyboard_input: Res<Input<KeyCode>>,
- gpu_picking_cameras: Query<(&GpuPickingCamera, &Camera)>,
-) {
- if keyboard_input.just_pressed(KeyCode::P) {
- for (i, (gpu_picking_camera, camera)) in gpu_picking_cameras.iter().enumerate() {
- let mut data = vec![];
- data.push("P3".to_string());
- let size = camera.logical_viewport_size().unwrap();
- data.push(format!("{} {}", size.x, size.y));
- data.push("255".to_string());
-
- for y in 0..=size.y as u32 {
- for x in 0..=size.x as u32 {
- let entity = gpu_picking_camera.get_entity(UVec2::new(x, y));
- if entity.is_some() {
- data.push("255 0 0".to_string());
- } else {
- data.push("0 0 0".to_string());
- }
- }
- }
-
- std::fs::write(format!("entity_out_{i}.ppm"), data.join("\n"))
- .expect("Unable to write file");
-
- println!("buffer saved to entity_out_{i}.ppm");
- }
- }
-}
-
 // You can also use a custom material with it, you just need to make sure it correctly outputs the entity id
 // See assets/shaders/gpu_picking_material.wgsl for more information
 #[derive(AsBindGroup, TypeUuid, TypePath, Debug, Clone)]
@@ -222,6 +190,8 @@ impl Material for GpuPickingMaterial {
 #[derive(Component)]
 struct MoveCube;
 
+// Moves a mesh from left to right
+// Used to show that picking works even if things are moving
 fn move_cube(
  mut q: Query<&mut Transform, With<MoveCube>>,
  time: Res<Time>,