mirror of
https://github.com/bevyengine/bevy
synced 2024-09-20 14:32:06 +00:00
de004da8d5
# Objective The migration process for `bevy_color` (#12013) will be fairly involved: there will be hundreds of affected files, and a large number of APIs. ## Solution To allow us to proceed granularly, we're going to keep both `bevy_color::Color` (new) and `bevy_render::Color` (old) around until the migration is complete. However, simply doing this directly is confusing! They're both called `Color`, making it very hard to tell when a portion of the code has been ported. As discussed in #12056, by renaming the old `Color` type, we can make it easier to gradually migrate over, one API at a time. ## Migration Guide THIS MIGRATION GUIDE INTENTIONALLY LEFT BLANK. This change should not be shipped to end users: delete this section in the final migration guide! --------- Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com>
83 lines
2.6 KiB
Rust
83 lines
2.6 KiB
Rust
//! This example shows various ways to configure texture materials in 3D.
|
|
|
|
use std::f32::consts::PI;
|
|
|
|
use bevy::prelude::*;
|
|
|
|
fn main() {
|
|
App::new()
|
|
.add_plugins(DefaultPlugins)
|
|
.add_systems(Startup, setup)
|
|
.run();
|
|
}
|
|
|
|
/// sets up a scene with textured entities
|
|
fn setup(
|
|
mut commands: Commands,
|
|
asset_server: Res<AssetServer>,
|
|
mut meshes: ResMut<Assets<Mesh>>,
|
|
mut materials: ResMut<Assets<StandardMaterial>>,
|
|
) {
|
|
// load a texture and retrieve its aspect ratio
|
|
let texture_handle = asset_server.load("branding/bevy_logo_dark_big.png");
|
|
let aspect = 0.25;
|
|
|
|
// create a new quad mesh. this is what we will apply the texture to
|
|
let quad_width = 8.0;
|
|
let quad_handle = meshes.add(Rectangle::new(quad_width, quad_width * aspect));
|
|
|
|
// this material renders the texture normally
|
|
let material_handle = materials.add(StandardMaterial {
|
|
base_color_texture: Some(texture_handle.clone()),
|
|
alpha_mode: AlphaMode::Blend,
|
|
unlit: true,
|
|
..default()
|
|
});
|
|
|
|
// this material modulates the texture to make it red (and slightly transparent)
|
|
let red_material_handle = materials.add(StandardMaterial {
|
|
base_color: LegacyColor::rgba(1.0, 0.0, 0.0, 0.5),
|
|
base_color_texture: Some(texture_handle.clone()),
|
|
alpha_mode: AlphaMode::Blend,
|
|
unlit: true,
|
|
..default()
|
|
});
|
|
|
|
// and lets make this one blue! (and also slightly transparent)
|
|
let blue_material_handle = materials.add(StandardMaterial {
|
|
base_color: LegacyColor::rgba(0.0, 0.0, 1.0, 0.5),
|
|
base_color_texture: Some(texture_handle),
|
|
alpha_mode: AlphaMode::Blend,
|
|
unlit: true,
|
|
..default()
|
|
});
|
|
|
|
// textured quad - normal
|
|
commands.spawn(PbrBundle {
|
|
mesh: quad_handle.clone(),
|
|
material: material_handle,
|
|
transform: Transform::from_xyz(0.0, 0.0, 1.5)
|
|
.with_rotation(Quat::from_rotation_x(-PI / 5.0)),
|
|
..default()
|
|
});
|
|
// textured quad - modulated
|
|
commands.spawn(PbrBundle {
|
|
mesh: quad_handle.clone(),
|
|
material: red_material_handle,
|
|
transform: Transform::from_rotation(Quat::from_rotation_x(-PI / 5.0)),
|
|
..default()
|
|
});
|
|
// textured quad - modulated
|
|
commands.spawn(PbrBundle {
|
|
mesh: quad_handle,
|
|
material: blue_material_handle,
|
|
transform: Transform::from_xyz(0.0, 0.0, -1.5)
|
|
.with_rotation(Quat::from_rotation_x(-PI / 5.0)),
|
|
..default()
|
|
});
|
|
// camera
|
|
commands.spawn(Camera3dBundle {
|
|
transform: Transform::from_xyz(3.0, 5.0, 8.0).looking_at(Vec3::ZERO, Vec3::Y),
|
|
..default()
|
|
});
|
|
}
|