Add CursorRayCam component to filter cameras used by CursorRayPlugin

examples/mouse_picking.rs

@@ -1,36 +1,36 @@
-//! This example will show you how to use your mouse cursor as a ray casting source, cast into the
-//! scene, intersect a mesh, and mark the intersection with the built in debug cursor. If you are
-//! looking for a more fully-featured mouse picking plugin, try out bevy_mod_picking.
-
-use bevy::{color::palettes::css, prelude::*};
-use bevy_mod_raycast::prelude::*;
-
-fn main() {
-    App::new()
-        .add_plugins(DefaultPlugins.set(bevy_mod_raycast::low_latency_window_plugin()))
-        .add_plugins(CursorRayPlugin)
-        .add_systems(Startup, setup)
-        .add_systems(Update, raycast)
-        .run();
-}
-
-fn raycast(cursor_ray: Res<CursorRay>, mut raycast: Raycast, mut gizmos: Gizmos) {
-    if let Some(cursor_ray) = **cursor_ray {
-        raycast.debug_cast_ray(cursor_ray, &default(), &mut gizmos);
-    }
-}
-
-fn setup(
-    mut commands: Commands,
-    mut meshes: ResMut<Assets<Mesh>>,
-    mut materials: ResMut<Assets<StandardMaterial>>,
-) {
-    commands.spawn(Camera3dBundle::default());
-    commands.spawn(PointLightBundle::default());
-    commands.spawn(PbrBundle {
-        mesh: meshes.add(Sphere::default()),
-        material: materials.add(Color::from(css::GRAY)),
-        transform: Transform::from_xyz(0.0, 0.0, -5.0),
-        ..default()
-    });
-}
+//! This example will show you how to use your mouse cursor as a ray casting source, cast into the
+//! scene, intersect a mesh, and mark the intersection with the built in debug cursor. If you are
+//! looking for a more fully-featured mouse picking plugin, try out bevy_mod_picking.
+
+use bevy::{color::palettes::css, prelude::*};
+use bevy_mod_raycast::prelude::*;
+
+fn main() {
+    App::new()
+        .add_plugins(DefaultPlugins.set(bevy_mod_raycast::low_latency_window_plugin()))
+        .add_plugins(CursorRayPlugin)
+        .add_systems(Startup, setup)
+        .add_systems(Update, raycast)
+        .run();
+}
+
+fn raycast(cursor_ray: Res<CursorRay>, mut raycast: Raycast, mut gizmos: Gizmos) {
+    if let Some(cursor_ray) = **cursor_ray {
+        raycast.debug_cast_ray(cursor_ray, &default(), &mut gizmos);
+    }
+}
+
+fn setup(
+    mut commands: Commands,
+    mut meshes: ResMut<Assets<Mesh>>,
+    mut materials: ResMut<Assets<StandardMaterial>>,
+) {
+    commands.spawn((Camera3dBundle::default(), CursorRayCam));
+    commands.spawn(PointLightBundle::default());
+    commands.spawn(PbrBundle {
+        mesh: meshes.add(Sphere::default()),
+        material: materials.add(Color::from(css::GRAY)),
+        transform: Transform::from_xyz(0.0, 0.0, -5.0),
+        ..default()
+    });
+}

examples/reflecting_laser.rs

@@ -94,6 +94,7 @@ fn setup_scene(
             ..default()
         },
         BloomSettings::default(),
+        CursorRayCam,
     ));
     // Make a box of planes facing inward so the laser gets trapped inside:
     let plane = PbrBundle {

examples/simplified_mesh.rs

@@ -33,7 +33,7 @@ fn setup_scene(
     mut meshes: ResMut<Assets<Mesh>>,
     mut materials: ResMut<Assets<StandardMaterial>>,
 ) {
-    commands.spawn(Camera3dBundle::default());
+    commands.spawn((Camera3dBundle::default(), CursorRayCam));
     commands.spawn((
         PbrBundle {
             // This is a very complex mesh that will be hard to raycast on

src/cursor.rs

@@ -8,7 +8,7 @@ use bevy_window::Window;
 
 use crate::ray_from_screenspace;
 
-/// Automatically generates a ray in world space corresponding to the mouse cursor, and stores it in
+/// Automatically generates a ray in world space corresponding to the mouse cursor and [`CursorRayCam`] marked camera(s), then stores it in
 /// [`CursorRay`].
 #[derive(Default)]
 pub struct CursorRayPlugin;
@@ -23,6 +23,10 @@ impl Plugin for CursorRayPlugin {
     }
 }
 
+/// Marks the camera this component is attached to as a [`CursorRay`] ray source.
+#[derive(Component)]
+pub struct CursorRayCam;
+
 /// Holds the latest cursor position as a 3d ray.
 ///
 /// Requires the [`CursorRayPlugin`] is added to your app. This is updated in both [`First`] and
@@ -36,7 +40,7 @@ pub struct CursorRay(pub Option<Ray3d>);
 pub fn update_cursor_ray(
     primary_window: Query<Entity, With<bevy_window::PrimaryWindow>>,
     windows: Query<&Window>,
-    cameras: Query<(&Camera, &GlobalTransform)>,
+    cameras: Query<(&Camera, &GlobalTransform), With<CursorRayCam>>,
     mut cursor_ray: ResMut<CursorRay>,
 ) {
     cursor_ray.0 = cameras