pub trait Hue: Sized {
// Required methods
fn with_hue(&self, hue: f32) -> Self;
fn hue(&self) -> f32;
fn set_hue(&mut self, hue: f32);
// Provided method
fn rotate_hue(&self, degrees: f32) -> Self { ... }
}Expand description
Trait for manipulating the hue of a color.
Required Methods§
Provided Methods§
fn rotate_hue(&self, degrees: f32) -> Self
fn rotate_hue(&self, degrees: f32) -> Self
Return a new version of this color with the hue channel rotated by the given degrees.
Examples found in repository?
examples/3d/animated_material.rs (line 45)
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62
fn setup(
mut commands: Commands,
asset_server: Res<AssetServer>,
mut meshes: ResMut<Assets<Mesh>>,
mut materials: ResMut<Assets<StandardMaterial>>,
) {
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: 2_000.0,
},
));
let cube = meshes.add(Cuboid::new(0.5, 0.5, 0.5));
const GOLDEN_ANGLE: f32 = 137.507_77;
let mut hsla = Hsla::hsl(0.0, 1.0, 0.5);
for x in -1..2 {
for z in -1..2 {
commands.spawn(PbrBundle {
mesh: cube.clone(),
material: materials.add(Color::from(hsla)),
transform: Transform::from_translation(Vec3::new(x as f32, 0.0, z as f32)),
..default()
});
hsla = hsla.rotate_hue(GOLDEN_ANGLE);
}
}
}
fn animate_materials(
material_handles: Query<&Handle<StandardMaterial>>,
time: Res<Time>,
mut materials: ResMut<Assets<StandardMaterial>>,
) {
for material_handle in material_handles.iter() {
if let Some(material) = materials.get_mut(material_handle) {
if let Color::Hsla(ref mut hsla) = material.base_color {
*hsla = hsla.rotate_hue(time.delta_seconds() * 100.0);
}
}
}
}Object Safety§
This trait is not object safe.