add: bevy_minimal.rs example

crates/transform-gizmo-bevy/Cargo.toml

@@ -37,5 +37,8 @@ bevy_log.workspace = true
 bevy_window.workspace = true
 bevy_transform.workspace = true
 
+[dev-dependencies]
+bevy = "0.13"
+
 [lints]
 workspace = true

crates/transform-gizmo-bevy/examples/bevy_minimal.rs

@@ -0,0 +1,49 @@
+//! A very simple example
+//! See the project root's `examples` directory for more examples
+
+use bevy::prelude::*;
+use transform_gizmo_bevy::*;
+
+fn main() {
+    App::new()
+        .add_plugins((DefaultPlugins, TransformGizmoPlugin))
+        .add_systems(Startup, setup)
+        .run();
+}
+
+fn setup(
+    mut commands: Commands,
+    mut materials: ResMut<Assets<StandardMaterial>>,
+    mut meshes: ResMut<Assets<Mesh>>,
+) {
+    // camera
+    commands.spawn((
+        Camera3dBundle {
+            transform: Transform::from_translation(Vec3::new(1.0, 3.0, -5.0))
+                .looking_at(Vec3::ZERO, Vec3::Y),
+            ..default()
+        },
+        GizmoCamera,
+    ));
+
+    // cube
+    commands.spawn((
+        PbrBundle {
+            mesh: meshes.add(Cuboid::new(1.0, 1.0, 1.0)),
+            material: materials.add(Color::GREEN),
+            transform: Transform::from_translation(Vec3::new(0.0, 0.0, 0.0)),
+            ..default()
+        },
+        GizmoTarget::default(),
+    ));
+
+    // light
+    commands.spawn(PointLightBundle {
+        point_light: PointLight {
+            shadows_enabled: true,
+            ..default()
+        },
+        transform: Transform::from_xyz(4.0, 8.0, 4.0),
+        ..default()
+    });
+}