Reverted changes to the text2d example.
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ickshonpe
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@ -5,72 +5,177 @@
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//! For an example on how to render text as part of a user interface, independent from the world
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//! viewport, you may want to look at `games/contributors.rs` or `ui/text.rs`.
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use bevy::color::palettes;
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use bevy::prelude::*;
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use bevy::sprite::Anchor;
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use bevy::text::TextBounds;
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use bevy::{
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color::palettes::css::*,
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math::ops,
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prelude::*,
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sprite::Anchor,
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text::{FontSmoothing, LineBreak, TextBounds},
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};
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fn main() {
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App::new()
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.add_plugins(DefaultPlugins)
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.add_systems(Startup, setup)
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.add_systems(
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Update,
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(animate_translation, animate_rotation, animate_scale),
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)
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.run();
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}
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fn example(commands: &mut Commands, dest: Vec3, justify: Justify) {
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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_font = TextFont {
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font: font.clone(),
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font_size: 50.0,
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..default()
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};
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let text_justification = Justify::Center;
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commands.spawn(Camera2d);
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// Demonstrate changing translation
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commands.spawn((
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Sprite::from_color(palettes::css::YELLOW, 10. * Vec2::ONE),
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Anchor::CENTER,
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Transform::from_translation(dest),
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Text2d::new("translation"),
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text_font.clone(),
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TextLayout::new_with_justify(text_justification),
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AnimateTranslation,
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));
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// Demonstrate changing rotation
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commands.spawn((
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Text2d::new("rotation"),
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text_font.clone(),
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TextLayout::new_with_justify(text_justification),
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AnimateRotation,
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));
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// Demonstrate changing scale
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commands.spawn((
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Text2d::new("scale"),
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text_font,
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TextLayout::new_with_justify(text_justification),
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Transform::from_translation(Vec3::new(400.0, 0.0, 0.0)),
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AnimateScale,
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));
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// Demonstrate text wrapping
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let slightly_smaller_text_font = TextFont {
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font,
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font_size: 35.0,
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..default()
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};
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let box_size = Vec2::new(300.0, 200.0);
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let box_position = Vec2::new(0.0, -250.0);
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commands.spawn((
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Sprite::from_color(Color::srgb(0.25, 0.25, 0.55), box_size),
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Transform::from_translation(box_position.extend(0.0)),
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children![(
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Text2d::new("this text wraps in the box\n(Unicode linebreaks)"),
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slightly_smaller_text_font.clone(),
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TextLayout::new(Justify::Left, LineBreak::WordBoundary),
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// Wrap text in the rectangle
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TextBounds::from(box_size),
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// Ensure the text is drawn on top of the box
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Transform::from_translation(Vec3::Z),
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)],
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));
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for (a, bg) in [
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(Anchor::TOP_LEFT, palettes::css::DARK_SLATE_GREY),
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(Anchor::TOP_RIGHT, palettes::css::DARK_OLIVEGREEN),
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(Anchor::BOTTOM_RIGHT, palettes::css::DARK_SLATE_GREY),
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(Anchor::BOTTOM_LEFT, palettes::css::DARK_OLIVEGREEN),
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] {
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commands.spawn((
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Sprite::from_color(bg, Vec2::new(300., 75.)),
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a,
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Transform::from_translation(dest - Vec3::Z),
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));
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let other_box_size = Vec2::new(300.0, 200.0);
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let other_box_position = Vec2::new(320.0, -250.0);
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commands.spawn((
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Sprite::from_color(Color::srgb(0.25, 0.25, 0.55), other_box_size),
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Transform::from_translation(other_box_position.extend(0.0)),
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children![(
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Text2d::new("this text wraps in the box\n(AnyCharacter linebreaks)"),
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slightly_smaller_text_font.clone(),
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TextLayout::new(Justify::Left, LineBreak::AnyCharacter),
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// Wrap text in the rectangle
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TextBounds::from(other_box_size),
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// Ensure the text is drawn on top of the box
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Transform::from_translation(Vec3::Z),
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)],
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));
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commands.spawn((
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Text2d(format!("L R\n{:?}\n{:?}", a.0, justify)),
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TextFont {
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font_size: 14.0,
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..default()
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},
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TextLayout {
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justify,
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// Demonstrate font smoothing off
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commands.spawn((
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Text2d::new("This text has\nFontSmoothing::None\nAnd Justify::Center"),
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slightly_smaller_text_font
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.clone()
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.with_font_smoothing(FontSmoothing::None),
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TextLayout::new_with_justify(Justify::Center),
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Transform::from_translation(Vec3::new(-400.0, -250.0, 0.0)),
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));
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commands
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.spawn((
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Sprite {
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color: Color::Srgba(LIGHT_CYAN),
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custom_size: Some(Vec2::new(10., 10.)),
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..Default::default()
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},
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TextBounds::new(300., 75.),
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Transform::from_translation(dest + Vec3::Z),
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a,
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ShowAabbGizmo::default(),
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));
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Transform::from_translation(250. * Vec3::Y),
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))
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.with_children(|commands| {
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for (text_anchor, color) in [
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(Anchor::TOP_LEFT, Color::Srgba(LIGHT_SALMON)),
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(Anchor::TOP_RIGHT, Color::Srgba(LIGHT_GREEN)),
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(Anchor::BOTTOM_RIGHT, Color::Srgba(LIGHT_BLUE)),
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(Anchor::BOTTOM_LEFT, Color::Srgba(LIGHT_YELLOW)),
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] {
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commands
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.spawn((
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Text2d::new(" Anchor".to_string()),
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slightly_smaller_text_font.clone(),
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text_anchor,
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))
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.with_child((
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TextSpan("::".to_string()),
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slightly_smaller_text_font.clone(),
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TextColor(LIGHT_GREY.into()),
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))
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.with_child((
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TextSpan(format!("{text_anchor:?} ")),
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slightly_smaller_text_font.clone(),
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TextColor(color),
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));
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}
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});
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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<Text2d>, With<AnimateTranslation>)>,
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) {
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for mut transform in &mut query {
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transform.translation.x = 100.0 * ops::sin(time.elapsed_secs()) - 400.0;
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transform.translation.y = 100.0 * ops::cos(time.elapsed_secs());
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}
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}
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fn setup(mut commands: Commands) {
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commands.spawn(Camera2d::default());
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for (i, j) in [
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Justify::Left,
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Justify::Right,
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Justify::Center,
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Justify::Justified,
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]
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.into_iter()
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.enumerate()
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{
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example(&mut commands, (240. - 160. * i as f32) * Vec3::Y, j);
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fn animate_rotation(
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time: Res<Time>,
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mut query: Query<&mut Transform, (With<Text2d>, With<AnimateRotation>)>,
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) {
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for mut transform in &mut query {
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transform.rotation = Quat::from_rotation_z(ops::cos(time.elapsed_secs()));
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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<Text2d>, 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 &mut query {
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let scale = (ops::sin(time.elapsed_secs()) + 1.1) * 2.0;
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transform.scale.x = scale;
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transform.scale.y = scale;
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}
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commands.spawn((
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Sprite::from_color(palettes::css::GREEN, 10. * Vec2::ONE),
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Anchor::CENTER,
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));
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}
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