Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Add Animated Material example #11524

Merged
merged 7 commits into from
Jan 26, 2024
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension


Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
11 changes: 11 additions & 0 deletions Cargo.toml
Original file line number Diff line number Diff line change
Expand Up @@ -552,6 +552,17 @@ description = "Demonstrates how to use the `Camera::viewport_to_world` method"
category = "3D Rendering"
wasm = true

[[example]]
name = "animated_material"
path = "examples/3d/animated_material.rs"
doc-scrape-examples = true

[package.metadata.example.animated_material]
name = "Animated Material"
description = "Shows how to animate material properties"
category = "3D Rendering"
wasm = true

[[example]]
name = "generate_custom_mesh"
path = "examples/3d/generate_custom_mesh.rs"
Expand Down
78 changes: 78 additions & 0 deletions examples/3d/animated_material.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,78 @@
//! Shows how to animate material properties

use bevy::prelude::*;
use bevy::utils::HashSet;

fn main() {
App::new()
.add_plugins(DefaultPlugins)
.add_systems(Startup, setup)
.add_systems(Update, (animate_materials, make_materials_unique))
.run();
}

fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
commands.spawn((
Camera3dBundle {
transform: Transform::from_xyz(3.0, 1.0, 3.0)
.looking_at(Vec3::new(0.0, -0.5, 0.0), Vec3::Y),
..default()
},
EnvironmentMapLight {
diffuse_map: asset_server.load("environment_maps/pisa_diffuse_rgb9e5_zstd.ktx2"),
specular_map: asset_server.load("environment_maps/pisa_specular_rgb9e5_zstd.ktx2"),
intensity: 1500.0,
},
));

let helmet = asset_server.load("models/FlightHelmet/FlightHelmet.gltf#Scene0");
for x in -2..3 {
for z in -2..3 {
commands.spawn(SceneBundle {
scene: helmet.clone(),
transform: Transform::from_translation(Vec3::new(x as f32, 0.0, z as f32)),
..default()
});
}
}
}

fn animate_materials(
material_handles: Query<&Handle<StandardMaterial>>,
time: Res<Time>,
mut materials: ResMut<Assets<StandardMaterial>>,
) {
for (i, material_handle) in material_handles.iter().enumerate() {
if let Some(material) = materials.get_mut(material_handle) {
let color = Color::hsl(
((i as f32 * 2.345 + time.elapsed_seconds_wrapped()) * 100.0) % 360.0,
1.0,
0.5,
);
material.base_color = color;
material.emissive = color;
}
}
}

/// This is needed because by default assets are loaded with shared materials
/// But we want to animate every helmet independently of the others, so we must duplicate the materials
fn make_materials_unique(
mut material_handles: Query<&mut Handle<StandardMaterial>>,
mut materials: ResMut<Assets<StandardMaterial>>,
mut ran: Local<bool>,
) {
if *ran {
return;
}
let mut set = HashSet::new();
for mut material_handle in material_handles.iter_mut() {
if set.contains(&material_handle.id()) {
let material = materials.get(&*material_handle).unwrap().clone();
*material_handle = materials.add(material);
} else {
set.insert(material_handle.id());
}
*ran = true;
}
}
1 change: 1 addition & 0 deletions examples/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -121,6 +121,7 @@ Example | Description
[3D Scene](../examples/3d/3d_scene.rs) | Simple 3D scene with basic shapes and lighting
[3D Shapes](../examples/3d/3d_shapes.rs) | A scene showcasing the built-in 3D shapes
[3D Viewport To World](../examples/3d/3d_viewport_to_world.rs) | Demonstrates how to use the `Camera::viewport_to_world` method
[Animated Material](../examples/3d/animated_material.rs) | Shows how to animate material properties
[Anti-aliasing](../examples/3d/anti_aliasing.rs) | Compares different anti-aliasing methods
[Atmospheric Fog](../examples/3d/atmospheric_fog.rs) | A scene showcasing the atmospheric fog effect
[Blend Modes](../examples/3d/blend_modes.rs) | Showcases different blend modes
Expand Down
Loading