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Spherical area lights example (#3498)
I was putting together the Bevy 0.6 release blog post and wanted a simple area light radius example, so here we are :) ![image](https://user-images.githubusercontent.com/2694663/147786883-63454290-b5b1-4456-9762-0b0b47e16bb5.png)
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@ -181,6 +181,10 @@ path = "examples/3d/shadow_biases.rs"
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name = "shadow_caster_receiver"
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path = "examples/3d/shadow_caster_receiver.rs"
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[[example]]
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name = "spherical_area_lights"
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path = "examples/3d/spherical_area_lights.rs"
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[[example]]
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name = "texture"
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path = "examples/3d/texture.rs"
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73
examples/3d/spherical_area_lights.rs
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73
examples/3d/spherical_area_lights.rs
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@ -0,0 +1,73 @@
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use bevy::prelude::*;
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fn main() {
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App::new()
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.insert_resource(ClearColor(Color::BLACK))
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.add_plugins(DefaultPlugins)
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.add_startup_system(setup)
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.run();
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}
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fn setup(
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mut commands: Commands,
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mut meshes: ResMut<Assets<Mesh>>,
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mut materials: ResMut<Assets<StandardMaterial>>,
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) {
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// camera
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commands.spawn_bundle(PerspectiveCameraBundle {
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transform: Transform::from_xyz(1.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
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..Default::default()
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});
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// plane
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commands.spawn_bundle(PbrBundle {
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mesh: meshes.add(Mesh::from(shape::Plane { size: 100.0 })),
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material: materials.add(StandardMaterial {
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base_color: Color::rgb(0.2, 0.2, 0.2),
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perceptual_roughness: 0.08,
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..Default::default()
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}),
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..Default::default()
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});
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const COUNT: usize = 6;
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let position_range = -4.0..4.0;
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let radius_range = 0.0..0.8;
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let pos_len = position_range.end - position_range.start;
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let radius_len = radius_range.end - radius_range.start;
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let mesh = meshes.add(Mesh::from(shape::UVSphere {
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sectors: 128,
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stacks: 64,
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..Default::default()
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}));
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for i in 0..COUNT {
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let percent = i as f32 / COUNT as f32;
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let radius = radius_range.start + percent * radius_len;
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// sphere light
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commands
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.spawn_bundle(PbrBundle {
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mesh: mesh.clone(),
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material: materials.add(StandardMaterial {
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base_color: Color::rgb(0.5, 0.5, 1.0),
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unlit: true,
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..Default::default()
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}),
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transform: Transform::from_xyz(position_range.start + percent * pos_len, 0.6, 0.0)
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.with_scale(Vec3::splat(radius)),
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..Default::default()
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})
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.with_children(|children| {
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children.spawn_bundle(PointLightBundle {
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point_light: PointLight {
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intensity: 1500.0,
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radius,
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color: Color::rgb(0.2, 0.2, 1.0),
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..Default::default()
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},
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..Default::default()
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});
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});
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}
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}
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@ -105,6 +105,7 @@ Example | File | Description
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`pbr` | [`3d/pbr.rs`](./3d/pbr.rs) | Demonstrates use of Physically Based Rendering (PBR) properties
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`shadow_caster_receiver` | [`3d/shadow_caster_receiver.rs`](./3d/shadow_caster_receiver.rs) | Demonstrates how to prevent meshes from casting/receiving shadows in a 3d scene
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`shadow_biases` | [`3d/shadow_biases.rs`](./3d/shadow_biases.rs) | Demonstrates how shadow biases affect shadows in a 3d scene
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`spherical_area_lights` | [`3d/spherical_area_lights.rs`](./3d/spherical_area_lights.rs) | Demonstrates how point light radius values affect light behavior.
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`texture` | [`3d/texture.rs`](./3d/texture.rs) | Shows configuration of texture materials
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`update_gltf_scene` | [`3d/update_gltf_scene.rs`](./3d/update_gltf_scene.rs) | Update a scene from a gltf file, either by spawning the scene as a child of another entity, or by accessing the entities of the scene
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`wireframe` | [`3d/wireframe.rs`](./3d/wireframe.rs) | Showcases wireframe rendering
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