more example cleanup and polish

Cargo.toml

@@ -12,7 +12,6 @@ profiler = ["bevy_ecs/profiler", "bevy_diagnostic/profiler"]
 members = [
     "crates/*",
     "crates/bevy_ecs/hecs",
-    "examples/app/dynamic_plugin_loading/example_plugin"
 ]
 
 [dependencies]
@@ -88,10 +87,6 @@ path = "examples/3d/texture.rs"
 name = "z_sort_debug"
 path = "examples/3d/z_sort_debug.rs"
 
-[[example]]
-name = "dynamic_plugin_loading"
-path = "examples/app/dynamic_plugin_loading/main.rs"
-
 [[example]]
 name = "empty_defaults"
 path = "examples/app/empty_defaults.rs"

crates/bevy_pbr/src/material.rs

@@ -20,3 +20,21 @@ impl Default for StandardMaterial {
         }
     }
 }
+
+impl From<Color> for StandardMaterial {
+    fn from(color: Color) -> Self {
+        StandardMaterial {
+            albedo: color,
+            ..Default::default()
+        }
+    }
+}
+
+impl From<Handle<Texture>> for StandardMaterial {
+    fn from(texture: Handle<Texture>) -> Self {
+        StandardMaterial {
+            albedo_texture: Some(texture),
+            ..Default::default()
+        }
+    }
+}

crates/bevy_transform/src/components/rotation.rs

@@ -9,6 +9,31 @@ impl Rotation {
     pub fn identity() -> Self {
         Self(Quat::identity())
     }
+
+    #[inline(always)]
+    pub fn from_rotation_yxz(yaw: f32, pitch: f32, roll: f32) -> Self {
+        Self(Quat::from_rotation_ypr(yaw, pitch, roll))
+    }
+
+    #[inline(always)]
+    pub fn from_rotation_xyz(x: f32, y: f32, z: f32) -> Self {
+        Self(Quat::from_rotation_ypr(y, x, z))
+    }
+
+    #[inline(always)]
+    pub fn from_rotation_x(x: f32) -> Self {
+        Self(Quat::from_rotation_x(x))
+    }
+
+    #[inline(always)]
+    pub fn from_rotation_y(y: f32) -> Self {
+        Self(Quat::from_rotation_y(y))
+    }
+
+    #[inline(always)]
+    pub fn from_rotation_z(z: f32) -> Self {
+        Self(Quat::from_rotation_z(z))
+    }
 }
 
 impl Default for Rotation {

examples/3d/3d_scene.rs

@@ -14,32 +14,18 @@ fn setup(
     mut meshes: ResMut<Assets<Mesh>>,
     mut materials: ResMut<Assets<StandardMaterial>>,
 ) {
-    // create a cube and a plane mesh
-    let cube_handle = meshes.add(Mesh::from(shape::Cube { size: 1.0 }));
-    let plane_handle = meshes.add(Mesh::from(shape::Plane { size: 10.0 }));
-
-    // create materials for our cube and plane
-    let cube_material_handle = materials.add(StandardMaterial {
-        albedo: Color::rgb(0.5, 0.4, 0.3),
-        ..Default::default()
-    });
-    let plane_material_handle = materials.add(StandardMaterial {
-        albedo: Color::rgb(0.1, 0.2, 0.1),
-        ..Default::default()
-    });
-
     // add entities to the world
     commands
         // plane
         .spawn(PbrComponents {
-            mesh: plane_handle,
-            material: plane_material_handle,
+            mesh: meshes.add(Mesh::from(shape::Plane { size: 10.0 })),
+            material: materials.add(Color::rgb(0.1, 0.2, 0.1).into()),
             ..Default::default()
         })
         // cube
         .spawn(PbrComponents {
-            mesh: cube_handle,
-            material: cube_material_handle,
+            mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
+            material: materials.add(Color::rgb(0.5, 0.4, 0.3).into()),
             translation: Translation::new(0.0, 1.0, 0.0),
             ..Default::default()
         })

examples/3d/load_model.rs

@@ -13,23 +13,14 @@ fn setup(
     asset_server: Res<AssetServer>,
     mut materials: ResMut<Assets<StandardMaterial>>,
 ) {
-    // load the mesh
-    let mesh_handle = asset_server
-        .load("assets/models/monkey/Monkey.gltf")
-        .unwrap();
-
-    // create a material for the mesh
-    let material_handle = materials.add(StandardMaterial {
-        albedo: Color::rgb(0.5, 0.4, 0.3),
-        ..Default::default()
-    });
-
     // add entities to the world
     commands
         // mesh
         .spawn(PbrComponents {
-            mesh: mesh_handle,
-            material: material_handle,
+            // load the mesh
+            mesh: asset_server.load("assets/models/monkey/Monkey.gltf").unwrap(),
+            // create a material for the mesh
+            material: materials.add(Color::rgb(0.5, 0.4, 0.3).into()),
             ..Default::default()
         })
         // light

examples/3d/msaa.rs

@@ -22,10 +22,7 @@ fn setup(
         // cube
         .spawn(PbrComponents {
             mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
-            material: materials.add(StandardMaterial {
-                albedo: Color::rgb(0.5, 0.4, 0.3),
-                ..Default::default()
-            }),
+            material: materials.add(Color::rgb(0.5, 0.4, 0.3).into()),
             ..Default::default()
         })
         // light

examples/3d/parenting.rs

@@ -1,7 +1,7 @@
 use bevy::prelude::*;
 
-struct Rotator;
-
+/// This example illustrates how to create parent->child relationships between entities how parent transforms
+/// are propagated to their descendants
 fn main() {
     App::build()
         .add_resource(Msaa { samples: 4 })
@@ -11,6 +11,9 @@ fn main() {
         .run();
 }
 
+/// this component indicates what entities should rotate
+struct Rotator;
+
 /// rotates the parent, which will result in the child also rotating
 fn rotator_system(time: Res<Time>, mut query: Query<(&Rotator, &mut Rotation)>) {
     for (_rotator, mut rotation) in &mut query.iter() {

examples/3d/spawner.rs

@@ -36,7 +36,6 @@ fn setup(
     mut meshes: ResMut<Assets<Mesh>>,
     mut materials: ResMut<Assets<StandardMaterial>>,
 ) {
-    let cube_handle = meshes.add(Mesh::from(shape::Cube { size: 1.0 }));
     commands
         // light
         .spawn(LightComponents {
@@ -54,6 +53,7 @@ fn setup(
         });
 
     let mut rng = StdRng::from_entropy();
+    let cube_handle = meshes.add(Mesh::from(shape::Cube { size: 1.0 }));
     for _ in 0..10000 {
         commands.spawn(PbrComponents {
             mesh: cube_handle,

examples/3d/texture.rs

@@ -1,5 +1,6 @@
 use bevy::prelude::*;
 
+/// This example shows various ways to configure texture materials in 3D
 fn main() {
     App::build()
         .add_default_plugins()
@@ -15,7 +16,7 @@ fn setup(
     mut textures: ResMut<Assets<Texture>>,
     mut materials: ResMut<Assets<StandardMaterial>>,
 ) {
-    // load a texture
+    // load a texture and retrieve its aspect ratio
     let texture_handle = asset_server
         .load_sync(&mut textures, "assets/branding/bevy_logo_dark_big.png")
         .unwrap();

examples/shader/shader_custom_material.rs

@@ -68,7 +68,7 @@ fn setup(
         AssetRenderResourcesNode::<MyMaterial>::new(true),
     );
 
-    // Add a Render Graph edge connecting our new "my_material" node to the main pass node
+    // Add a Render Graph edge connecting our new "my_material" node to the main pass node. This ensures "my_material" runs before the main pass 
     render_graph
         .add_node_edge("my_material", base::node::MAIN_PASS)
         .unwrap();
@@ -78,14 +78,11 @@ fn setup(
         color: Color::rgb(0.0, 0.8, 0.0),
     });
 
-    // Create a cube mesh which will use our material
-    let cube_handle = meshes.add(Mesh::from(shape::Cube { size: 1.0 }));
-
     // Setup our world
     commands
         // cube
         .spawn(MeshComponents {
-            mesh: cube_handle,
+            mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
             render_pipelines: RenderPipelines::from_pipelines(vec![RenderPipeline::specialized(
                 pipeline_handle,
                 // NOTE: in the future you wont need to manually declare dynamic bindings

examples/shader/shader_defs.rs

@@ -80,7 +80,7 @@ fn setup(
         AssetRenderResourcesNode::<MyMaterial>::new(true),
     );
 
-    // Add a Render Graph edge connecting our new "my_material" node to the main pass node
+    // Add a Render Graph edge connecting our new "my_material" node to the main pass node. This ensures "my_material" runs before the main pass 
     render_graph
         .add_node_edge("my_material", base::node::MAIN_PASS)
         .unwrap();