25b62f9577
# Objective Port bevy_ui to pipelined-rendering (see #2535 ) ## Solution I did some changes during the port: - [X] separate color from the texture asset (as suggested [here](https://discord.com/channels/691052431525675048/743663924229963868/874353914525413406)) - [X] ~give the vertex shader a per-instance buffer instead of per-vertex buffer~ (incompatible with batching) Remaining features to implement to reach parity with the old renderer: - [x] textures - [X] TextBundle I'd also like to add these features, but they need some design discussion: - [x] batching - [ ] separate opaque and transparent phases - [ ] multiple windows - [ ] texture atlases - [ ] (maybe) clipping
93 lines
2.9 KiB
Rust
93 lines
2.9 KiB
Rust
use bevy::{
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core::Time,
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math::{Quat, Vec3},
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prelude::{App, AssetServer, Commands, Component, Query, Res, Transform, With},
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render2::{camera::OrthographicCameraBundle, color::Color},
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text2::{HorizontalAlign, Text, Text2dBundle, TextAlignment, TextStyle, VerticalAlign},
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PipelinedDefaultPlugins,
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};
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fn main() {
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App::new()
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.add_plugins(PipelinedDefaultPlugins)
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.add_startup_system(setup)
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.add_system(animate_translation)
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.add_system(animate_rotation)
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.add_system(animate_scale)
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.run();
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}
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#[derive(Component)]
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struct AnimateTranslation;
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#[derive(Component)]
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struct AnimateRotation;
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#[derive(Component)]
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struct AnimateScale;
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fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
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let font = asset_server.load("fonts/FiraSans-Bold.ttf");
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let text_style = TextStyle {
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font,
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font_size: 60.0,
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color: Color::WHITE,
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};
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let text_alignment = TextAlignment {
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vertical: VerticalAlign::Center,
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horizontal: HorizontalAlign::Center,
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};
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// 2d camera
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commands.spawn_bundle(OrthographicCameraBundle::new_2d());
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// Demonstrate changing translation
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commands
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.spawn_bundle(Text2dBundle {
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text: Text::with_section("translation", text_style.clone(), text_alignment),
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..Default::default()
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})
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.insert(AnimateTranslation);
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// Demonstrate changing rotation
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commands
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.spawn_bundle(Text2dBundle {
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text: Text::with_section("rotation", text_style.clone(), text_alignment),
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..Default::default()
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})
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.insert(AnimateRotation);
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// Demonstrate changing scale
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commands
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.spawn_bundle(Text2dBundle {
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text: Text::with_section("scale", text_style, text_alignment),
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..Default::default()
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})
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.insert(AnimateScale);
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}
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fn animate_translation(
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time: Res<Time>,
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mut query: Query<&mut Transform, (With<Text>, With<AnimateTranslation>)>,
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) {
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for mut transform in query.iter_mut() {
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transform.translation.x = 100.0 * time.seconds_since_startup().sin() as f32 - 400.0;
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transform.translation.y = 100.0 * time.seconds_since_startup().cos() as f32;
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}
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}
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fn animate_rotation(
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time: Res<Time>,
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mut query: Query<&mut Transform, (With<Text>, With<AnimateRotation>)>,
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) {
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for mut transform in query.iter_mut() {
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transform.rotation = Quat::from_rotation_z(time.seconds_since_startup().cos() as f32);
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}
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}
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fn animate_scale(
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time: Res<Time>,
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mut query: Query<&mut Transform, (With<Text>, With<AnimateScale>)>,
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) {
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// Consider changing font-size instead of scaling the transform. Scaling a Text2D will scale the
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// rendered quad, resulting in a pixellated look.
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for mut transform in query.iter_mut() {
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transform.translation = Vec3::new(400.0, 0.0, 0.0);
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transform.scale = Vec3::splat((time.seconds_since_startup().sin() as f32 + 1.1) * 2.0);
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}
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}
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