bevy_mod_outline/examples/hollow.rs

136 lines
3.9 KiB
Rust

use std::f32::consts::{PI, TAU};
use bevy::{gltf::GltfPlugin, prelude::*, scene::SceneInstance, window::close_on_esc};
use bevy_mod_outline::*;
fn main() {
App::new()
// Register outline normal vertex attribute with glTF plugin
.add_plugins(
DefaultPlugins.build().set(
GltfPlugin::default()
.add_custom_vertex_attribute("_OUTLINE_NORMAL", ATTRIBUTE_OUTLINE_NORMAL),
),
)
.add_plugins(OutlinePlugin)
.insert_resource(AmbientLight {
color: Color::WHITE,
brightness: 1.0,
})
.add_systems(Startup, setup)
.add_systems(
Update,
(
setup_scene_once_loaded,
rotates_and_pulses,
rotates_hue,
close_on_esc,
),
)
.run();
}
#[derive(Component)]
struct RotatesAndPulses;
#[derive(Component)]
struct RotatesHue;
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
// Camera
commands.spawn(Camera3dBundle {
transform: Transform::from_xyz(20.0, 20.0, 30.0)
.looking_at(Vec3::new(0.0, 0.0, 0.0), Vec3::Y),
..default()
});
// Light
commands.spawn(DirectionalLightBundle {
transform: Transform::from_rotation(Quat::from_euler(EulerRot::ZYX, 0.0, 1.0, -PI / 4.)),
directional_light: DirectionalLight {
shadows_enabled: true,
..default()
},
..default()
});
// Hollow
commands
.spawn(SceneBundle {
scene: asset_server.load("hollow.glb#Scene0"),
..default()
})
.insert(RotatesAndPulses)
.insert(OutlineBundle {
outline: OutlineVolume {
visible: true,
width: 0.0,
colour: Color::BLUE,
},
stencil: OutlineStencil {
enabled: true,
offset: 0.0,
},
..default()
});
}
// Once the scene is loaded, start the animation and add an outline
fn setup_scene_once_loaded(
mut commands: Commands,
scene_query: Query<&SceneInstance>,
scene_manager: Res<SceneSpawner>,
name_query: Query<&Name, With<Handle<StandardMaterial>>>,
mut done: Local<bool>,
) {
if !*done {
if let Ok(scene) = scene_query.get_single() {
if scene_manager.instance_is_ready(**scene) {
for entity in scene_manager.iter_instance_entities(**scene) {
commands
.entity(entity)
.insert(InheritOutlineBundle::default());
if let Ok(name) = name_query.get(entity) {
if name.as_str() == "inside" {
commands.entity(entity).insert(RotatesHue);
}
}
}
*done = true;
}
}
}
}
fn rotates_and_pulses(
mut query: Query<(&mut Transform, &mut OutlineVolume), With<RotatesAndPulses>>,
timer: Res<Time>,
mut t: Local<f32>,
) {
*t = (*t + timer.delta_seconds()) % TAU;
let a = t.sin();
let b = 10.0 * (3.0 * *t).cos().abs();
for (mut transform, mut volume) in query.iter_mut() {
*transform = Transform::from_rotation(Quat::from_rotation_y(a));
volume.width = b;
}
}
fn rotates_hue(
query: Query<&mut Handle<StandardMaterial>, With<RotatesHue>>,
mut materials: ResMut<Assets<StandardMaterial>>,
timer: Res<Time>,
) {
for handle in query.iter() {
let material = materials.get_mut(handle).unwrap();
let mut colour = material.base_color.as_hsla_f32();
colour[0] = (colour[0] + 15.0 * timer.delta_seconds()) % 360.0;
material.base_color = Color::Hsla {
hue: colour[0],
saturation: colour[1],
lightness: colour[2],
alpha: colour[3],
};
}
}