use bevy::prelude::*; fn main() { App::build() .add_default_plugins() .add_startup_system(setup.system()) .run(); } fn setup( mut commands: Commands, asset_server: Res, mut textures: ResMut>, mut materials: ResMut>, ) { let texture_handle = asset_server .load_sync(&mut textures, "assets/branding/bevy_logo_dark_big.png") .unwrap(); let font_handle = asset_server.load("assets/fonts/FiraSans-Bold.ttf").unwrap(); let texture = textures.get(&texture_handle).unwrap(); let aspect = texture.aspect(); commands // ui camera .spawn(OrthographicCameraComponents::default()) // root node .spawn(NodeComponents { node: Node::new(Anchors::FULL, Margins::default()), material: materials.add(Color::NONE.into()), ..Default::default() }) .with_children(|parent| { parent // left vertical fill .spawn(NodeComponents { node: Node::new(Anchors::LEFT_FULL, Margins::new(10.0, 200.0, 10.0, 10.0)), material: materials.add(Color::rgb(0.02, 0.02, 0.02).into()), ..Default::default() }) .with_children(|parent| { parent.spawn(LabelComponents { node: Node::new(Anchors::TOP_LEFT, Margins::new(10.0, 200.0, 40.0, 10.0)), label: Label { text: "Text Label".to_string(), font: font_handle, style: TextStyle { font_size: 30.0, color: Color::WHITE, ..Default::default() }, }, ..Default::default() }); }) // right vertical fill .spawn(NodeComponents { node: Node::new(Anchors::RIGHT_FULL, Margins::new(10.0, 100.0, 100.0, 100.0)), material: materials.add(Color::rgb(0.02, 0.02, 0.02).into()), ..Default::default() }) // render order test: reddest in the back, whitest in the front .spawn(NodeComponents { node: Node::positioned( Vec2::new(75.0, 60.0), Anchors::CENTER, Margins::new(0.0, 100.0, 0.0, 100.0), ), material: materials.add(Color::rgb(1.0, 0.0, 0.0).into()), ..Default::default() }) .spawn(NodeComponents { node: Node::positioned( Vec2::new(50.0, 35.0), Anchors::CENTER, Margins::new(0.0, 100.0, 0.0, 100.0), ), material: materials.add(Color::rgb(1.0, 0.3, 0.3).into()), ..Default::default() }) .spawn(NodeComponents { node: Node::positioned( Vec2::new(100.0, 85.0), Anchors::CENTER, Margins::new(0.0, 100.0, 0.0, 100.0), ), material: materials.add(Color::rgb(1.0, 0.5, 0.5).into()), ..Default::default() }) .spawn(NodeComponents { node: Node::positioned( Vec2::new(150.0, 135.0), Anchors::CENTER, Margins::new(0.0, 100.0, 0.0, 100.0), ), material: materials.add(Color::rgb(1.0, 0.7, 0.7).into()), ..Default::default() }) // parenting .spawn(NodeComponents { node: Node::positioned( Vec2::new(210.0, 0.0), Anchors::BOTTOM_LEFT, Margins::new(0.0, 200.0, 10.0, 210.0), ), material: materials.add(Color::rgb(0.1, 0.1, 1.0).into()), ..Default::default() }) .with_children(|parent| { parent.spawn(NodeComponents { node: Node::new(Anchors::FULL, Margins::new(20.0, 20.0, 20.0, 20.0)), material: materials.add(Color::rgb(0.6, 0.6, 1.0).into()), ..Default::default() }); }) // alpha test .spawn(NodeComponents { node: Node::positioned( Vec2::new(200.0, 185.0), Anchors::CENTER, Margins::new(0.0, 100.0, 0.0, 100.0), ), material: materials.add(Color::rgba(1.0, 0.9, 0.9, 0.4).into()), ..Default::default() }) // texture .spawn(NodeComponents { node: Node::new( Anchors::CENTER_TOP, Margins::new(-250.0, 250.0, 510.0 * aspect, 10.0), ), material: materials.add(ColorMaterial::texture(texture_handle)), ..Default::default() }); }); }