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Directional light and shadow
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,178 @@ | ||
| use bevy::{ | ||
| diagnostic::{FrameTimeDiagnosticsPlugin, LogDiagnosticsPlugin}, | ||
| ecs::prelude::*, | ||
| math::{Mat4, Quat, Vec3}, | ||
| pbr2::{ | ||
| AmbientLight, DirectionalLight, DirectionalLightBundle, PbrBundle, PointLight, | ||
| PointLightBundle, StandardMaterial, | ||
| }, | ||
| prelude::{App, Assets, BuildChildren, Transform}, | ||
| render2::{ | ||
| camera::{OrthographicProjection, PerspectiveCameraBundle}, | ||
| color::Color, | ||
| mesh::{shape, Mesh}, | ||
| }, | ||
| PipelinedDefaultPlugins, | ||
| }; | ||
|
|
||
| fn main() { | ||
| App::new() | ||
| .add_plugins(PipelinedDefaultPlugins) | ||
| .add_plugin(FrameTimeDiagnosticsPlugin::default()) | ||
| .add_plugin(LogDiagnosticsPlugin::default()) | ||
| .add_startup_system(setup.system()) | ||
| .run(); | ||
| } | ||
|
|
||
| /// set up a simple 3D scene | ||
| fn setup( | ||
| mut commands: Commands, | ||
| mut meshes: ResMut<Assets<Mesh>>, | ||
| mut materials: ResMut<Assets<StandardMaterial>>, | ||
| ) { | ||
| let box_size = 2.0; | ||
| let box_thickness = 0.15; | ||
| let box_offset = (box_size + box_thickness) / 2.0; | ||
|
|
||
| // left - red | ||
| let mut transform = Transform::from_xyz(-box_offset, box_offset, 0.0); | ||
| transform.rotate(Quat::from_rotation_z(std::f32::consts::FRAC_PI_2)); | ||
| commands.spawn_bundle(PbrBundle { | ||
| mesh: meshes.add(Mesh::from(shape::Box::new( | ||
| box_size, | ||
| box_thickness, | ||
| box_size, | ||
| ))), | ||
| transform, | ||
| material: materials.add(StandardMaterial { | ||
| base_color: Color::rgb(0.63, 0.065, 0.05), | ||
| ..Default::default() | ||
| }), | ||
| ..Default::default() | ||
| }); | ||
| // right - green | ||
| let mut transform = Transform::from_xyz(box_offset, box_offset, 0.0); | ||
| transform.rotate(Quat::from_rotation_z(std::f32::consts::FRAC_PI_2)); | ||
| commands.spawn_bundle(PbrBundle { | ||
| mesh: meshes.add(Mesh::from(shape::Box::new( | ||
| box_size, | ||
| box_thickness, | ||
| box_size, | ||
| ))), | ||
| transform, | ||
| material: materials.add(StandardMaterial { | ||
| base_color: Color::rgb(0.14, 0.45, 0.091), | ||
| ..Default::default() | ||
| }), | ||
| ..Default::default() | ||
| }); | ||
| // bottom - white | ||
| commands.spawn_bundle(PbrBundle { | ||
| mesh: meshes.add(Mesh::from(shape::Box::new( | ||
| box_size + 2.0 * box_thickness, | ||
| box_thickness, | ||
| box_size, | ||
| ))), | ||
| material: materials.add(StandardMaterial { | ||
| base_color: Color::rgb(0.725, 0.71, 0.68), | ||
| ..Default::default() | ||
| }), | ||
| ..Default::default() | ||
| }); | ||
| // top - white | ||
| let transform = Transform::from_xyz(0.0, 2.0 * box_offset, 0.0); | ||
| commands.spawn_bundle(PbrBundle { | ||
| mesh: meshes.add(Mesh::from(shape::Box::new( | ||
| box_size + 2.0 * box_thickness, | ||
| box_thickness, | ||
| box_size, | ||
| ))), | ||
| transform, | ||
| material: materials.add(StandardMaterial { | ||
| base_color: Color::rgb(0.725, 0.71, 0.68), | ||
| ..Default::default() | ||
| }), | ||
| ..Default::default() | ||
| }); | ||
| // back - white | ||
| let mut transform = Transform::from_xyz(0.0, box_offset, -box_offset); | ||
| transform.rotate(Quat::from_rotation_x(std::f32::consts::FRAC_PI_2)); | ||
| commands.spawn_bundle(PbrBundle { | ||
| mesh: meshes.add(Mesh::from(shape::Box::new( | ||
| box_size + 2.0 * box_thickness, | ||
| box_thickness, | ||
| box_size + 2.0 * box_thickness, | ||
| ))), | ||
| transform, | ||
| material: materials.add(StandardMaterial { | ||
| base_color: Color::rgb(0.725, 0.71, 0.68), | ||
| ..Default::default() | ||
| }), | ||
| ..Default::default() | ||
| }); | ||
|
|
||
| // ambient light | ||
| commands.insert_resource(AmbientLight { | ||
| color: Color::WHITE, | ||
| brightness: 0.02, | ||
| }); | ||
| // top light | ||
| commands | ||
| .spawn_bundle(PbrBundle { | ||
| mesh: meshes.add(Mesh::from(shape::Plane { size: 0.4 })), | ||
| transform: Transform::from_matrix(Mat4::from_scale_rotation_translation( | ||
| Vec3::ONE, | ||
| Quat::from_rotation_x(std::f32::consts::PI), | ||
| Vec3::new(0.0, box_size + 0.5 * box_thickness, 0.0), | ||
| )), | ||
| material: materials.add(StandardMaterial { | ||
| base_color: Color::WHITE, | ||
| emissive: Color::WHITE * 100.0, | ||
| ..Default::default() | ||
| }), | ||
| ..Default::default() | ||
| }) | ||
| .with_children(|builder| { | ||
| builder.spawn_bundle(PointLightBundle { | ||
| point_light: PointLight { | ||
| color: Color::WHITE, | ||
| shadow_bias_min: 0.00001, | ||
| shadow_bias_max: 0.0001, | ||
| intensity: 25.0, | ||
| ..Default::default() | ||
| }, | ||
| transform: Transform::from_translation((box_thickness + 0.05) * Vec3::Y), | ||
| ..Default::default() | ||
| }); | ||
| }); | ||
| // directional light | ||
| const HALF_SIZE: f32 = 10.0; | ||
| commands | ||
| .spawn_bundle(DirectionalLightBundle { | ||
| directional_light: DirectionalLight { | ||
| illuminance: 10000.0, | ||
| shadow_bias_min: 0.00001, | ||
| shadow_bias_max: 0.0001, | ||
| shadow_projection: OrthographicProjection { | ||
| left: -HALF_SIZE, | ||
| right: HALF_SIZE, | ||
| bottom: -HALF_SIZE, | ||
| top: HALF_SIZE, | ||
| near: -10.0 * HALF_SIZE, | ||
| far: 10.0 * HALF_SIZE, | ||
| ..Default::default() | ||
| }, | ||
| ..Default::default() | ||
| }, | ||
| transform: Transform::from_rotation(Quat::from_rotation_x(-std::f32::consts::PI / 2.0)), | ||
| ..Default::default() | ||
| }); | ||
|
|
||
| // camera | ||
| commands | ||
| .spawn_bundle(PerspectiveCameraBundle { | ||
| transform: Transform::from_xyz(0.0, box_offset, 4.0) | ||
| .looking_at(Vec3::new(0.0, box_offset, 0.0), Vec3::Y), | ||
| ..Default::default() | ||
| }); | ||
| } |
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