Struct Rectangle 

pub struct Rectangle {
    pub half_size: Vec2,
}

A rectangle primitive, which is like a square, except that the width and height can be different

Fields

half_size: Vec2

Half of the width and height of the rectangle

Implementations

impl Rectangle

pub const fn new(width: f32, height: f32) -> Rectangle

Create a new Rectangle from a full width and height

Examples found in repository

examples/3d/tonemapping.rs (line 147)

fn setup_color_gradient_scene(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<ColorGradientMaterial>>,
    camera_transform: Res<CameraTransform>,
) {
    let mut transform = camera_transform.0;
    transform.translation += *transform.forward();

    commands.spawn((
        Mesh3d(meshes.add(Rectangle::new(0.7, 0.7))),
        MeshMaterial3d(materials.add(ColorGradientMaterial {})),
        transform,
        Visibility::Hidden,
        SceneNumber(2),
    ));
}

examples/camera/2d_top_down_camera.rs (line 38)

fn setup_scene(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<ColorMaterial>>,
) {
    // World where we move the player
    commands.spawn((
        Mesh2d(meshes.add(Rectangle::new(1000., 700.))),
        MeshMaterial2d(materials.add(Color::srgb(0.2, 0.2, 0.3))),
    ));

    // Player
    commands.spawn((
        Player,
        Mesh2d(meshes.add(Circle::new(25.))),
        MeshMaterial2d(materials.add(Color::srgb(6.25, 9.4, 9.1))), // RGB values exceed 1 to achieve a bright color for the bloom effect
        Transform::from_xyz(0., 0., 2.),
    ));
}

examples/2d/tilemap_chunk.rs (line 80)

fn spawn_fake_player(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<ColorMaterial>>,
    chunk: Single<&TilemapChunk>,
) {
    let mut transform = chunk.calculate_tile_transform(UVec2::new(0, 0));
    transform.translation.z = 1.;

    commands.spawn((
        Mesh2d(meshes.add(Rectangle::new(8., 8.))),
        MeshMaterial2d(materials.add(Color::from(RED_400))),
        transform,
        MovePlayer,
    ));

    let mut transform = chunk.calculate_tile_transform(UVec2::new(5, 6));
    transform.translation.z = 1.;

    // second "player" to visually test a non-zero position
    commands.spawn((
        Mesh2d(meshes.add(Rectangle::new(8., 8.))),
        MeshMaterial2d(materials.add(Color::from(RED_400))),
        transform,
    ));
}

examples/camera/2d_screen_shake.rs (line 186)

fn setup_scene(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<ColorMaterial>>,
) {
    // Background tile
    commands.spawn((
        Mesh2d(meshes.add(Rectangle::new(1000., 700.))),
        MeshMaterial2d(materials.add(Color::srgb(0.2, 0.2, 0.3))),
    ));

    // The shape in the middle could be our player character.
    commands.spawn((
        Mesh2d(meshes.add(Rectangle::new(50.0, 100.0))),
        MeshMaterial2d(materials.add(Color::srgb(0.25, 0.94, 0.91))),
        Transform::from_xyz(0., 0., 2.),
    ));

    // These two shapes could be obstacles.
    commands.spawn((
        Mesh2d(meshes.add(Rectangle::new(50.0, 50.0))),
        MeshMaterial2d(materials.add(Color::srgb(0.85, 0.0, 0.2))),
        Transform::from_xyz(-450.0, 200.0, 2.),
    ));

    commands.spawn((
        Mesh2d(meshes.add(Rectangle::new(70.0, 50.0))),
        MeshMaterial2d(materials.add(Color::srgb(0.5, 0.8, 0.2))),
        Transform::from_xyz(450.0, -150.0, 2.),
    ));
}

examples/2d/wireframe_2d.rs (line 69)

fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<ColorMaterial>>,
) {
    // Triangle: Never renders a wireframe
    commands.spawn((
        Mesh2d(meshes.add(Triangle2d::new(
            Vec2::new(0.0, 50.0),
            Vec2::new(-50.0, -50.0),
            Vec2::new(50.0, -50.0),
        ))),
        MeshMaterial2d(materials.add(Color::BLACK)),
        Transform::from_xyz(-150.0, 0.0, 0.0),
        NoWireframe2d,
    ));
    // Rectangle: Follows global wireframe setting
    commands.spawn((
        Mesh2d(meshes.add(Rectangle::new(100.0, 100.0))),
        MeshMaterial2d(materials.add(Color::BLACK)),
        Transform::from_xyz(0.0, 0.0, 0.0),
    ));
    // Circle: Always renders a wireframe
    commands.spawn((
        Mesh2d(meshes.add(Circle::new(50.0))),
        MeshMaterial2d(materials.add(Color::BLACK)),
        Transform::from_xyz(150.0, 0.0, 0.0),
        Wireframe2d,
        // This lets you configure the wireframe color of this entity.
        // If not set, this will use the color in `WireframeConfig`
        Wireframe2dColor {
            color: GREEN.into(),
        },
    ));

    commands.spawn(Camera2d);

    // Text used to show controls
    commands.spawn((
        Text::default(),
        Node {
            position_type: PositionType::Absolute,
            top: px(12),
            left: px(12),
            ..default()
        },
    ));
}

examples/testbed/2d.rs (line 127)

    pub fn setup(
        mut commands: Commands,
        mut meshes: ResMut<Assets<Mesh>>,
        mut materials: ResMut<Assets<ColorMaterial>>,
    ) {
        commands.spawn((Camera2d, DespawnOnExit(super::Scene::Shapes)));

        let shapes = [
            meshes.add(Circle::new(50.0)),
            meshes.add(CircularSector::new(50.0, 1.0)),
            meshes.add(CircularSegment::new(50.0, 1.25)),
            meshes.add(Ellipse::new(25.0, 50.0)),
            meshes.add(Annulus::new(25.0, 50.0)),
            meshes.add(Capsule2d::new(25.0, 50.0)),
            meshes.add(Rhombus::new(75.0, 100.0)),
            meshes.add(Rectangle::new(50.0, 100.0)),
            meshes.add(RegularPolygon::new(50.0, 6)),
            meshes.add(Triangle2d::new(
                Vec2::Y * 50.0,
                Vec2::new(-50.0, -50.0),
                Vec2::new(50.0, -50.0),
            )),
        ];
        let num_shapes = shapes.len();

        for (i, shape) in shapes.into_iter().enumerate() {
            // Distribute colors evenly across the rainbow.
            let color = Color::hsl(360. * i as f32 / num_shapes as f32, 0.95, 0.7);

            commands.spawn((
                Mesh2d(shape),
                MeshMaterial2d(materials.add(color)),
                Transform::from_xyz(
                    // Distribute shapes from -X_EXTENT/2 to +X_EXTENT/2.
                    -X_EXTENT / 2. + i as f32 / (num_shapes - 1) as f32 * X_EXTENT,
                    0.0,
                    0.0,
                ),
                DespawnOnExit(super::Scene::Shapes),
            ));
        }
    }
}

mod bloom {
    use bevy::{core_pipeline::tonemapping::Tonemapping, post_process::bloom::Bloom, prelude::*};

    pub fn setup(
        mut commands: Commands,
        mut meshes: ResMut<Assets<Mesh>>,
        mut materials: ResMut<Assets<ColorMaterial>>,
    ) {
        commands.spawn((
            Camera2d,
            Tonemapping::TonyMcMapface,
            Bloom::default(),
            DespawnOnExit(super::Scene::Bloom),
        ));

        commands.spawn((
            Mesh2d(meshes.add(Circle::new(100.))),
            MeshMaterial2d(materials.add(Color::srgb(7.5, 0.0, 7.5))),
            Transform::from_translation(Vec3::new(-200., 0., 0.)),
            DespawnOnExit(super::Scene::Bloom),
        ));

        commands.spawn((
            Mesh2d(meshes.add(RegularPolygon::new(100., 6))),
            MeshMaterial2d(materials.add(Color::srgb(6.25, 9.4, 9.1))),
            Transform::from_translation(Vec3::new(200., 0., 0.)),
            DespawnOnExit(super::Scene::Bloom),
        ));
    }
}

mod text {
    use bevy::color::palettes;
    use bevy::prelude::*;
    use bevy::sprite::Anchor;
    use bevy::text::TextBounds;

    pub fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
        commands.spawn((Camera2d, DespawnOnExit(super::Scene::Text)));

        for (i, justify) in [
            Justify::Left,
            Justify::Right,
            Justify::Center,
            Justify::Justified,
        ]
        .into_iter()
        .enumerate()
        {
            let y = 230. - 150. * i as f32;
            spawn_anchored_text(&mut commands, -300. * Vec3::X + y * Vec3::Y, justify, None);
            spawn_anchored_text(
                &mut commands,
                300. * Vec3::X + y * Vec3::Y,
                justify,
                Some(TextBounds::new(150., 60.)),
            );
        }

        let sans_serif = TextFont::from(asset_server.load("fonts/FiraSans-Bold.ttf"));

        const NUM_ITERATIONS: usize = 10;
        for i in 0..NUM_ITERATIONS {
            let fraction = i as f32 / (NUM_ITERATIONS - 1) as f32;

            commands.spawn((
                Text2d::new("Bevy"),
                sans_serif.clone(),
                Transform::from_xyz(0.0, fraction * 200.0, i as f32)
                    .with_scale(1.0 + Vec2::splat(fraction).extend(1.))
                    .with_rotation(Quat::from_rotation_z(fraction * core::f32::consts::PI)),
                TextColor(Color::hsla(fraction * 360.0, 0.8, 0.8, 0.8)),
                DespawnOnExit(super::Scene::Text),
            ));
        }

        commands.spawn((
            Text2d::new("This text is invisible."),
            Visibility::Hidden,
            DespawnOnExit(super::Scene::Text),
        ));
    }

    fn spawn_anchored_text(
        commands: &mut Commands,
        dest: Vec3,
        justify: Justify,
        bounds: Option<TextBounds>,
    ) {
        commands.spawn((
            Sprite {
                color: palettes::css::YELLOW.into(),
                custom_size: Some(5. * Vec2::ONE),
                ..Default::default()
            },
            Transform::from_translation(dest),
            DespawnOnExit(super::Scene::Text),
        ));

        for anchor in [
            Anchor::TOP_LEFT,
            Anchor::TOP_RIGHT,
            Anchor::BOTTOM_RIGHT,
            Anchor::BOTTOM_LEFT,
        ] {
            let mut text = commands.spawn((
                Text2d::new("L R\n"),
                TextLayout::new_with_justify(justify),
                Transform::from_translation(dest + Vec3::Z),
                anchor,
                DespawnOnExit(super::Scene::Text),
                ShowAabbGizmo {
                    color: Some(palettes::tailwind::AMBER_400.into()),
                },
                children![
                    (
                        TextSpan::new(format!("{}, {}\n", anchor.x, anchor.y)),
                        TextFont::from_font_size(14.0),
                        TextColor(palettes::tailwind::BLUE_400.into()),
                    ),
                    (
                        TextSpan::new(format!("{justify:?}")),
                        TextFont::from_font_size(14.0),
                        TextColor(palettes::tailwind::GREEN_400.into()),
                    ),
                ],
            ));
            if let Some(bounds) = bounds {
                text.insert(bounds);

                commands.spawn((
                    Sprite {
                        color: palettes::tailwind::GRAY_900.into(),
                        custom_size: Some(Vec2::new(bounds.width.unwrap(), bounds.height.unwrap())),
                        ..Default::default()
                    },
                    Transform::from_translation(dest - Vec3::Z),
                    anchor,
                    DespawnOnExit(super::Scene::Text),
                ));
            }
        }
    }
}

mod sprite {
    use bevy::color::palettes::css::{BLUE, LIME, RED};
    use bevy::prelude::*;
    use bevy::sprite::Anchor;

    pub fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
        commands.spawn((Camera2d, DespawnOnExit(super::Scene::Sprite)));
        for (anchor, flip_x, flip_y, color) in [
            (Anchor::BOTTOM_LEFT, false, false, Color::WHITE),
            (Anchor::BOTTOM_RIGHT, true, false, RED.into()),
            (Anchor::TOP_LEFT, false, true, LIME.into()),
            (Anchor::TOP_RIGHT, true, true, BLUE.into()),
        ] {
            commands.spawn((
                Sprite {
                    image: asset_server.load("branding/bevy_logo_dark.png"),
                    flip_x,
                    flip_y,
                    color,
                    ..default()
                },
                anchor,
                DespawnOnExit(super::Scene::Sprite),
            ));
        }
    }
}

mod sprite_slicing {
    use bevy::prelude::*;
    use bevy::sprite::{BorderRect, SliceScaleMode, SpriteImageMode, TextureSlicer};

    pub fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
        commands.spawn((Camera2d, DespawnOnExit(super::Scene::SpriteSlicing)));

        let texture = asset_server.load("textures/slice_square_2.png");
        let font = asset_server.load("fonts/FiraSans-Bold.ttf");

        commands.spawn((
            Sprite {
                image: texture.clone(),
                ..default()
            },
            Transform::from_translation(Vec3::new(-150.0, 50.0, 0.0)).with_scale(Vec3::splat(2.0)),
            DespawnOnExit(super::Scene::SpriteSlicing),
        ));

        commands.spawn((
            Sprite {
                image: texture,
                image_mode: SpriteImageMode::Sliced(TextureSlicer {
                    border: BorderRect::all(20.0),
                    center_scale_mode: SliceScaleMode::Stretch,
                    ..default()
                }),
                custom_size: Some(Vec2::new(200.0, 200.0)),
                ..default()
            },
            Transform::from_translation(Vec3::new(150.0, 50.0, 0.0)),
            DespawnOnExit(super::Scene::SpriteSlicing),
        ));

        commands.spawn((
            Text2d::new("Original"),
            TextFont {
                font: FontSource::from(font.clone()),
                font_size: FontSize::Px(20.0),
                ..default()
            },
            Transform::from_translation(Vec3::new(-150.0, -80.0, 0.0)),
            DespawnOnExit(super::Scene::SpriteSlicing),
        ));

        commands.spawn((
            Text2d::new("Sliced"),
            TextFont {
                font: FontSource::from(font.clone()),
                font_size: FontSize::Px(20.0),
                ..default()
            },
            Transform::from_translation(Vec3::new(150.0, -80.0, 0.0)),
            DespawnOnExit(super::Scene::SpriteSlicing),
        ));
    }
}

mod gizmos {
    use bevy::{color::palettes::css::*, prelude::*};

    pub fn setup(mut commands: Commands) {
        commands.spawn((Camera2d, DespawnOnExit(super::Scene::Gizmos)));
    }

    pub fn draw_gizmos(mut gizmos: Gizmos) {
        gizmos.rect_2d(
            Isometry2d::from_translation(Vec2::new(-200.0, 0.0)),
            Vec2::new(200.0, 200.0),
            RED,
        );
        gizmos
            .circle_2d(
                Isometry2d::from_translation(Vec2::new(-200.0, 0.0)),
                200.0,
                GREEN,
            )
            .resolution(64);

        gizmos.text_2d(
            Isometry2d::from_translation(Vec2::new(-200.0, 0.0)),
            "text_2d gizmo",
            15.,
            Vec2 { x: 0., y: 0. },
            Color::WHITE,
        );

        // 2d grids with all variations of outer edges on or off
        for i in 0..4 {
            let x = 200.0 * (1.0 + (i % 2) as f32);
            let y = 150.0 * (0.5 - (i / 2) as f32);
            let mut grid = gizmos.grid(
                Vec3::new(x, y, 0.0),
                UVec2::new(5, 4),
                Vec2::splat(30.),
                Color::WHITE,
            );
            if i & 1 > 0 {
                grid = grid.outer_edges_x();
            }
            if i & 2 > 0 {
                grid.outer_edges_y();
            }
        }
    }
}

mod texture_atlas_builder {
    use bevy::{
        asset::RenderAssetUsages,
        image::ImageSampler,
        prelude::*,
        render::render_resource::{Extent3d, TextureDimension, TextureFormat},
        sprite::Anchor,
    };

    const ATLAS_SIZE: UVec2 = UVec2::splat(64);
    const IMAGE_SIZE: UVec2 = UVec2::splat(28);
    const PADDING_SIZE: UVec2 = UVec2::splat(2);
    const ATLAS_SCALE: f32 = 4.;
    const IMAGE_SCALE: f32 = 4.;

    pub fn setup(
        mut commands: Commands,
        mut textures: ResMut<Assets<Image>>,
        mut texture_atlases: ResMut<Assets<TextureAtlasLayout>>,
    ) {
        commands.spawn((Camera2d, DespawnOnExit(super::Scene::TextureAtlasBuilder)));

        for (i, padding) in [UVec2::ZERO, PADDING_SIZE].into_iter().enumerate() {
            // generate solid red green and blue and yellow images
            let images = [
                [255, 0, 0, 255],
                [0, 255, 0, 255],
                [0, 0, 255, 255],
                [255, 255, 0, 255],
            ]
            .map(|pixel| {
                Image::new_fill(
                    Extent3d {
                        width: 28,
                        height: 28,
                        depth_or_array_layers: 1,
                    },
                    TextureDimension::D2,
                    &pixel,
                    TextureFormat::Rgba8UnormSrgb,
                    RenderAssetUsages::MAIN_WORLD | RenderAssetUsages::RENDER_WORLD,
                )
            });

            let mut texture_atlas_builder = TextureAtlasBuilder::default();
            texture_atlas_builder
                .initial_size(ATLAS_SIZE)
                .max_size(ATLAS_SIZE)
                .padding(padding);
            for image in &images {
                texture_atlas_builder.add_texture(None, image);
            }

            let (atlas_layout, _, atlas_texture) = texture_atlas_builder.build().expect(
                "The images are 28 pixels square, so they should fit with 4 pixels left over",
            );
            let atlas_layout = texture_atlases.add(atlas_layout);

            let mut nearest_atlas_image = atlas_texture.clone();
            nearest_atlas_image.sampler = ImageSampler::nearest();

            let atlas_handle = textures.add(atlas_texture);
            let nearest_atlas_handle = textures.add(nearest_atlas_image);

            let position = ((2. * i as f32 - 1.) * (0.625 * ATLAS_SIZE.x as f32 * ATLAS_SCALE))
                .round()
                * Vec3::X;

            commands.spawn((
                Sprite {
                    image: nearest_atlas_handle,
                    custom_size: Some(ATLAS_SIZE.as_vec2() * ATLAS_SCALE),
                    ..default()
                },
                Anchor::BOTTOM_CENTER,
                ShowAabbGizmo {
                    color: Some(Color::WHITE),
                },
                DespawnOnExit(super::Scene::TextureAtlasBuilder),
                Transform::from_translation(position),
            ));

            for (index, anchor) in [
                Anchor::BOTTOM_RIGHT,
                Anchor::BOTTOM_LEFT,
                Anchor::TOP_LEFT,
                Anchor::TOP_RIGHT,
            ]
            .into_iter()
            .enumerate()
            {
                commands.spawn((
                    Sprite {
                        image: atlas_handle.clone(),
                        texture_atlas: Some(TextureAtlas {
                            layout: atlas_layout.clone(),
                            index,
                        }),
                        custom_size: Some(IMAGE_SIZE.as_vec2() * IMAGE_SCALE),
                        ..default()
                    },
                    Transform::from_translation(
                        position
                            + -2.
                                * IMAGE_SCALE
                                * (Vec3::Y * IMAGE_SIZE.y as f32 + anchor.as_vec().extend(0.)),
                    ),
                    anchor,
                    DespawnOnExit(super::Scene::TextureAtlasBuilder),
                ));
            }
        }
    }
}

mod color_consistency {
    //! Visual regression test for <https://github.com/bevyengine/bevy/issues/23577>.
    //!
    //! The clear color and shapes rendered using different pipelines (sprites,
    //! 2D meshes, UI background) should produce identical pixel values for the
    //! same sRGB input color.
    //!
    //! If the color conversion paths are consistent, the entire window will appear
    //! as a uniform solid color with no visible boundaries between the strips.

    use bevy::{core_pipeline::tonemapping::Tonemapping, prelude::*};

    // We've chosen the sRGB value from issue #23577, in case it can be reproduced elsewhere.
    const TEST_COLOR: Color = Color::srgb(0.1, 0.1, 0.1);
    const DEFAULT_WIDTH: f32 = 1280.0;
    const DEFAULT_HEIGHT: f32 = 720.0;
    const STRIP_WIDTH: f32 = DEFAULT_WIDTH / 3.0;
    const STRIP_HEIGHT: f32 = DEFAULT_HEIGHT / 3.0;

    pub fn setup(
        mut commands: Commands,
        mut meshes: ResMut<Assets<Mesh>>,
        mut materials: ResMut<Assets<ColorMaterial>>,
    ) {
        // The window background is drawn with the clear color.
        commands.insert_resource(ClearColor(TEST_COLOR));

        // Make sure there's no tonemapping
        commands.spawn((
            Camera2d,
            Tonemapping::None,
            DespawnOnExit(super::Scene::ColorConsistency),
        ));

        // Top third for sprites
        commands.spawn((
            Sprite {
                color: TEST_COLOR,
                custom_size: Some(Vec2::new(STRIP_WIDTH, STRIP_HEIGHT)),
                ..default()
            },
            Transform::from_xyz(0.0, STRIP_HEIGHT, 0.0),
            DespawnOnExit(super::Scene::ColorConsistency),
        ));

        // Middle third for 2D meshes
        commands.spawn((
            Mesh2d(meshes.add(Rectangle::new(STRIP_WIDTH, STRIP_HEIGHT))),
            MeshMaterial2d(materials.add(ColorMaterial::from_color(TEST_COLOR))),
            Transform::from_xyz(0.0, 0.0, 0.0),
            DespawnOnExit(super::Scene::ColorConsistency),
        ));

        // Bottom third for UI nodes
        commands.spawn((
            Node {
                position_type: PositionType::Absolute,
                bottom: Val::Px(0.0),
                left: Val::Px(0.0),
                width: Val::Percent(33.3),
                height: Val::Px(STRIP_HEIGHT),
                ..default()
            },
            BackgroundColor(TEST_COLOR),
            DespawnOnExit(super::Scene::ColorConsistency),
        ));
    }

Additional examples can be found in:

• examples/math/bounding_2d.rs
• examples/2d/2d_viewport_to_world.rs
• examples/3d/order_independent_transparency.rs
• examples/3d/texture.rs
• examples/picking/dragdrop_picking.rs
• examples/2d/mesh2d_repeated_texture.rs
• examples/shader/shader_prepass.rs
• examples/2d/2d_shapes.rs
• examples/3d/lighting.rs

pub const fn from_size(size: Vec2) -> Rectangle

Create a new Rectangle from a given full size

Examples found in repository

examples/tools/gamepad_viewer.rs (line 75)

    fn from_world(world: &mut World) -> Self {
        Self {
            circle: world.add_asset(Circle::new(BUTTON_RADIUS)).into(),
            triangle: world
                .add_asset(RegularPolygon::new(BUTTON_RADIUS, 3))
                .into(),
            start_pause: world.add_asset(Rectangle::from_size(START_SIZE)).into(),
            trigger: world.add_asset(Rectangle::from_size(TRIGGER_SIZE)).into(),
        }
    }

examples/3d/tonemapping.rs (line 258)

fn resize_image(
    image_mesh: Query<(&MeshMaterial3d<StandardMaterial>, &Mesh3d), With<HDRViewer>>,
    materials: Res<Assets<StandardMaterial>>,
    mut meshes: ResMut<Assets<Mesh>>,
    images: Res<Assets<Image>>,
    mut image_event_reader: MessageReader<AssetEvent<Image>>,
) {
    for event in image_event_reader.read() {
        let (AssetEvent::Added { id } | AssetEvent::Modified { id }) = event else {
            continue;
        };

        for (mat_h, mesh_h) in &image_mesh {
            let Some(mat) = materials.get(mat_h) else {
                continue;
            };

            let Some(ref base_color_texture) = mat.base_color_texture else {
                continue;
            };

            if *id != base_color_texture.id() {
                continue;
            };

            let Some(image_changed) = images.get(*id) else {
                continue;
            };

            let size = image_changed.size_f32().normalize_or_zero() * 1.4;
            // Resize Mesh
            let quad = Mesh::from(Rectangle::from_size(size));
            meshes.insert(mesh_h, quad).unwrap();
        }
    }
}

examples/2d/mesh2d_alpha_mode.rs (line 26)

fn setup(
    mut commands: Commands,
    asset_server: Res<AssetServer>,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<ColorMaterial>>,
) {
    commands.spawn(Camera2d);

    let texture_handle = asset_server.load("branding/icon.png");
    let mesh_handle = meshes.add(Rectangle::from_size(Vec2::splat(256.0)));

    // opaque
    // Each sprite should be square with the transparent parts being completely black
    // The blue sprite should be on top with the white and green one behind it
    commands.spawn((
        Mesh2d(mesh_handle.clone()),
        MeshMaterial2d(materials.add(ColorMaterial {
            color: WHITE.into(),
            alpha_mode: AlphaMode2d::Opaque,
            texture: Some(texture_handle.clone()),
            ..default()
        })),
        Transform::from_xyz(-400.0, 0.0, 0.0),
    ));
    commands.spawn((
        Mesh2d(mesh_handle.clone()),
        MeshMaterial2d(materials.add(ColorMaterial {
            color: BLUE.into(),
            alpha_mode: AlphaMode2d::Opaque,
            texture: Some(texture_handle.clone()),
            ..default()
        })),
        Transform::from_xyz(-300.0, 0.0, 1.0),
    ));
    commands.spawn((
        Mesh2d(mesh_handle.clone()),
        MeshMaterial2d(materials.add(ColorMaterial {
            color: GREEN.into(),
            alpha_mode: AlphaMode2d::Opaque,
            texture: Some(texture_handle.clone()),
            ..default()
        })),
        Transform::from_xyz(-200.0, 0.0, -1.0),
    ));

    // Test the interaction between opaque/mask and transparent meshes
    // The white sprite should be:
    // - only the icon is opaque but background is transparent
    // - on top of the green sprite
    // - behind the blue sprite
    commands.spawn((
        Mesh2d(mesh_handle.clone()),
        MeshMaterial2d(materials.add(ColorMaterial {
            color: WHITE.into(),
            alpha_mode: AlphaMode2d::Mask(0.5),
            texture: Some(texture_handle.clone()),
            ..default()
        })),
        Transform::from_xyz(200.0, 0.0, 0.0),
    ));
    commands.spawn((
        Mesh2d(mesh_handle.clone()),
        MeshMaterial2d(materials.add(ColorMaterial {
            color: BLUE.with_alpha(0.7).into(),
            alpha_mode: AlphaMode2d::Blend,
            texture: Some(texture_handle.clone()),
            ..default()
        })),
        Transform::from_xyz(300.0, 0.0, 1.0),
    ));
    commands.spawn((
        Mesh2d(mesh_handle.clone()),
        MeshMaterial2d(materials.add(ColorMaterial {
            color: GREEN.with_alpha(0.7).into(),
            alpha_mode: AlphaMode2d::Blend,
            texture: Some(texture_handle),
            ..default()
        })),
        Transform::from_xyz(400.0, 0.0, -1.0),
    ));
}

examples/stress_tests/bevymark.rs (line 244)

fn setup(
    mut commands: Commands,
    args: Res<Args>,
    asset_server: Res<AssetServer>,
    mut meshes: ResMut<Assets<Mesh>>,
    material_assets: ResMut<Assets<ColorMaterial>>,
    images: ResMut<Assets<Image>>,
    window: Single<&Window>,
    counter: ResMut<BevyCounter>,
) {
    warn!(include_str!("warning_string.txt"));

    let args = args.into_inner();
    let images = images.into_inner();

    let mut textures = Vec::with_capacity(args.material_texture_count.max(1));
    if matches!(args.mode, Mode::Sprite) || args.material_texture_count > 0 {
        textures.push(asset_server.load("branding/icon.png"));
    }
    init_textures(&mut textures, args, images);

    let material_assets = material_assets.into_inner();
    let materials = init_materials(args, &textures, material_assets);

    let mut bird_resources = BirdResources {
        textures,
        materials,
        quad: meshes.add(Rectangle::from_size(Vec2::splat(BIRD_TEXTURE_SIZE as f32))),
        // We're seeding the PRNG here to make this example deterministic for testing purposes.
        // This isn't strictly required in practical use unless you need your app to be deterministic.
        color_rng: ChaCha8Rng::seed_from_u64(42),
        material_rng: ChaCha8Rng::seed_from_u64(42),
        velocity_rng: ChaCha8Rng::seed_from_u64(42),
        transform_rng: ChaCha8Rng::seed_from_u64(42),
    };

    let font = TextFont {
        font_size: FontSize::Px(40.0),
        ..Default::default()
    };

    commands.spawn(Camera2d);
    commands
        .spawn((
            Node {
                position_type: PositionType::Absolute,
                padding: UiRect::all(px(5)),
                ..default()
            },
            BackgroundColor(Color::BLACK.with_alpha(0.75)),
            GlobalZIndex(i32::MAX),
        ))
        .with_children(|p| {
            p.spawn((Text::default(), StatsText)).with_children(|p| {
                p.spawn((
                    TextSpan::new("Bird Count: "),
                    font.clone(),
                    TextColor(LIME.into()),
                ));
                p.spawn((TextSpan::new(""), font.clone(), TextColor(AQUA.into())));
                p.spawn((
                    TextSpan::new("\nFPS (raw): "),
                    font.clone(),
                    TextColor(LIME.into()),
                ));
                p.spawn((TextSpan::new(""), font.clone(), TextColor(AQUA.into())));
                p.spawn((
                    TextSpan::new("\nFPS (SMA): "),
                    font.clone(),
                    TextColor(LIME.into()),
                ));
                p.spawn((TextSpan::new(""), font.clone(), TextColor(AQUA.into())));
                p.spawn((
                    TextSpan::new("\nFPS (EMA): "),
                    font.clone(),
                    TextColor(LIME.into()),
                ));
                p.spawn((TextSpan::new(""), font.clone(), TextColor(AQUA.into())));
            });
        });

    let mut scheduled = BirdScheduled {
        per_wave: args.per_wave,
        waves: args.waves,
    };

    if args.benchmark {
        let counter = counter.into_inner();
        for wave in (0..scheduled.waves).rev() {
            spawn_birds(
                &mut commands,
                args,
                &window.resolution,
                counter,
                scheduled.per_wave,
                &mut bird_resources,
                Some(wave),
                wave,
            );
        }
        scheduled.waves = 0;
    }
    commands.insert_resource(bird_resources);
    commands.insert_resource(scheduled);
}

pub fn from_corners(point1: Vec2, point2: Vec2) -> Rectangle

Create a new Rectangle from two corner points

pub const fn from_length(length: f32) -> Rectangle

Create a Rectangle from a single length. The resulting Rectangle will be the same size in every direction.

Examples found in repository

examples/3d/decal.rs (line 56)

fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut standard_materials: ResMut<Assets<StandardMaterial>>,
    mut decal_standard_materials: ResMut<Assets<ForwardDecalMaterial<StandardMaterial>>>,
    asset_server: Res<AssetServer>,
) {
    // Spawn the forward decal
    commands.spawn((
        Name::new("Decal"),
        ForwardDecal,
        MeshMaterial3d(decal_standard_materials.add(ForwardDecalMaterial {
            base: StandardMaterial {
                base_color_texture: Some(asset_server.load("textures/uv_checker_bw.png")),
                ..default()
            },
            extension: ForwardDecalMaterialExt {
                depth_fade_factor: 1.0,
            },
        })),
        Transform::from_scale(Vec3::splat(4.0)),
    ));

    commands.spawn((
        Name::new("Camera"),
        Camera3d::default(),
        FreeCamera::default(),
        // Must enable the depth prepass to render forward decals
        DepthPrepass,
        Transform::from_xyz(2.0, 9.5, 2.5).looking_at(Vec3::ZERO, Vec3::Y),
    ));

    let white_material = standard_materials.add(Color::WHITE);

    commands.spawn((
        Name::new("Floor"),
        Mesh3d(meshes.add(Rectangle::from_length(10.0))),
        MeshMaterial3d(white_material.clone()),
        Transform::from_rotation(Quat::from_rotation_x(-std::f32::consts::FRAC_PI_2)),
    ));

    // Spawn a few cube with random rotations to showcase how the decals behave with non-flat geometry
    let num_obs = 10;
    let mut rng = ChaCha8Rng::seed_from_u64(19878367467713);
    for i in 0..num_obs {
        for j in 0..num_obs {
            let rotation_axis: [f32; 3] = rng.random();
            let rotation_vec: Vec3 = rotation_axis.into();
            let rotation: u32 = rng.random_range(0..360);
            let transform = Transform::from_xyz(
                (-num_obs + 1) as f32 / 2.0 + i as f32,
                -0.2,
                (-num_obs + 1) as f32 / 2.0 + j as f32,
            )
            .with_rotation(Quat::from_axis_angle(
                rotation_vec.normalize_or_zero(),
                (rotation as f32).to_radians(),
            ));

            commands.spawn((
                Mesh3d(meshes.add(Cuboid::from_length(0.6))),
                MeshMaterial3d(white_material.clone()),
                transform,
            ));
        }
    }

    commands.spawn((
        Name::new("Light"),
        PointLight {
            shadow_maps_enabled: true,
            ..default()
        },
        Transform::from_xyz(4.0, 8.0, 4.0),
    ));
}

pub fn size(&self) -> Vec2

Get the size of the rectangle

pub fn closest_point(&self, point: Vec2) -> Vec2

Finds the point on the rectangle that is closest to the given point.

If the point is outside the rectangle, the returned point will be on the perimeter of the rectangle. Otherwise, it will be inside the rectangle and returned as is.

Trait Implementations

impl Bounded2d for Rectangle

fn aabb_2d(&self, isometry: impl Into<Isometry2d>) -> Aabb2d

Get an axis-aligned bounding box for the shape translated and rotated by the given isometry.

fn bounding_circle(&self, isometry: impl Into<Isometry2d>) -> BoundingCircle

Get a bounding circle for the shape translated and rotated by the given isometry.

impl BoundedExtrusion for Rectangle

fn extrusion_aabb_3d( &self, half_depth: f32, isometry: impl Into<Isometry3d>, ) -> Aabb3d

Get an axis-aligned bounding box for an extrusion with this shape as a base and the given half_depth, transformed by the given translation and rotation.

fn extrusion_bounding_sphere( &self, half_depth: f32, isometry: impl Into<Isometry3d>, ) -> BoundingSphere

Get a bounding sphere for an extrusion of the base_shape with the given half_depth with the given translation and rotation

impl Clone for Rectangle

fn clone(&self) -> Rectangle

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Rectangle

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Rectangle

fn default() -> Rectangle

Returns the default Rectangle with a half-width and half-height of 0.5.

impl<'de> Deserialize<'de> for Rectangle

fn deserialize<__D>( __deserializer: __D, ) -> Result<Rectangle, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<Rectangle> for Mesh

fn from(rectangle: Rectangle) -> Mesh

Converts to this type from the input type.

impl FromArg for Rectangle

type This<'from_arg> = Rectangle

The type to convert into.

fn from_arg(arg: Arg<'_>) -> Result<<Rectangle as FromArg>::This<'_>, ArgError>

Creates an item from an argument.

impl FromReflect for Rectangle

fn from_reflect(reflect: &(dyn PartialReflect + 'static)) -> Option<Rectangle>

Constructs a concrete instance of Self from a reflected value.

fn take_from_reflect( reflect: Box<dyn PartialReflect>, ) -> Result<Self, Box<dyn PartialReflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails.

impl GetOwnership for Rectangle

fn ownership() -> Ownership

Returns the ownership of Self.

impl GetTypeRegistration for Rectangle

fn get_type_registration() -> TypeRegistration

Returns the default TypeRegistration for this type.

fn register_type_dependencies(registry: &mut TypeRegistry)

Registers other types needed by this type.

impl<Config, Clear> GizmoPrimitive2d<Rectangle> for GizmoBuffer<Config, Clear>

where Config: GizmoConfigGroup, Clear: 'static + Send + Sync,

type Output<'a> = () where GizmoBuffer<Config, Clear>: 'a

The output of primitive_2d. This is a builder to set non-default values.

fn primitive_2d( &mut self, primitive: &Rectangle, isometry: impl Into<Isometry2d>, color: impl Into<Color>, ) -> <GizmoBuffer<Config, Clear> as GizmoPrimitive2d<Rectangle>>::Output<'_>

Renders a 2D primitive with its associated details.

impl Inset for Rectangle

fn inset(self, distance: f32) -> Rectangle

Create a new version of this primitive that is resized uniformly. That is, it resizes the shape inwards such that for the lines between vertices, it creates new parallel lines that are distance inwards from the original lines.

impl IntoReturn for Rectangle

fn into_return<'into_return>(self) -> Return<'into_return>

where Rectangle: 'into_return,

Converts Self into a Return value.

impl Measured2d for Rectangle

fn area(&self) -> f32

Get the area of the rectangle

fn perimeter(&self) -> f32

Get the perimeter of the rectangle

impl Meshable for Rectangle

type Output = RectangleMeshBuilder

The output of Self::mesh. This will be a MeshBuilder used for creating a Mesh.

fn mesh(&self) -> <Rectangle as Meshable>::Output

Creates a Mesh for a shape.

impl PartialEq for Rectangle

fn eq(&self, other: &Rectangle) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialReflect for Rectangle

fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value.

fn try_apply( &mut self, value: &(dyn PartialReflect + 'static), ) -> Result<(), ApplyError>

Tries to apply a reflected value to this value.

fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type.

fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type.

fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type.

fn reflect_owned(self: Box<Rectangle>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type.

fn try_into_reflect( self: Box<Rectangle>, ) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>

Attempts to cast this type to a boxed, fully-reflected value.

fn try_as_reflect(&self) -> Option<&(dyn Reflect + 'static)>

Attempts to cast this type to a fully-reflected value.

fn try_as_reflect_mut(&mut self) -> Option<&mut (dyn Reflect + 'static)>

Attempts to cast this type to a mutable, fully-reflected value.

fn into_partial_reflect(self: Box<Rectangle>) -> Box<dyn PartialReflect>

Casts this type to a boxed, reflected value.

fn as_partial_reflect(&self) -> &(dyn PartialReflect + 'static)

Casts this type to a reflected value.

fn as_partial_reflect_mut(&mut self) -> &mut (dyn PartialReflect + 'static)

Casts this type to a mutable, reflected value.

fn reflect_partial_eq( &self, value: &(dyn PartialReflect + 'static), ) -> Option<bool>

Returns a “partial equality” comparison result.

fn reflect_partial_cmp( &self, value: &(dyn PartialReflect + 'static), ) -> Option<Ordering>

Returns a “partial comparison” result.

fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Debug formatter for the value.

fn reflect_clone(&self) -> Result<Box<dyn Reflect>, ReflectCloneError>

Attempts to clone Self using reflection.

fn apply(&mut self, value: &(dyn PartialReflect + 'static))

Applies a reflected value to this value.

fn to_dynamic(&self) -> Box<dyn PartialReflect>

Converts this reflected value into its dynamic representation based on its kind.

fn reflect_clone_and_take<T>(&self) -> Result<T, ReflectCloneError>

where T: 'static, Self: Sized + TypePath,

For a type implementing PartialReflect, combines reflect_clone and take in a useful fashion, automatically constructing an appropriate ReflectCloneError if the downcast fails.

fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type).

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl Reflect for Rectangle

fn into_any(self: Box<Rectangle>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.

fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.

fn into_reflect(self: Box<Rectangle>) -> Box<dyn Reflect>

Casts this type to a boxed, fully-reflected value.

fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a fully-reflected value.

fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable, fully-reflected value.

fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value.

impl Serialize for Rectangle

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl ShapeSample for Rectangle

type Output = Vec2

The type of vector returned by the sample methods, Vec2 for 2D shapes and Vec3 for 3D shapes.

fn sample_interior<R>(&self, rng: &mut R) -> Vec2

where R: RngExt + ?Sized,

Uniformly sample a point from inside the area/volume of this shape, centered on 0.

fn sample_boundary<R>(&self, rng: &mut R) -> Vec2

where R: RngExt + ?Sized,

Uniformly sample a point from the surface of this shape, centered on 0.

fn interior_dist(self) -> impl Distribution<Self::Output>

where Self: Sized,

Extract a [Distribution] whose samples are points of this shape’s interior, taken uniformly.

fn boundary_dist(self) -> impl Distribution<Self::Output>

where Self: Sized,

Extract a [Distribution] whose samples are points of this shape’s boundary, taken uniformly.

impl Struct for Rectangle

fn field(&self, name: &str) -> Option<&(dyn PartialReflect + 'static)>

Gets a reference to the value of the field named name as a &dyn PartialReflect.

fn field_mut( &mut self, name: &str, ) -> Option<&mut (dyn PartialReflect + 'static)>

Gets a mutable reference to the value of the field named name as a &mut dyn PartialReflect.

fn field_at(&self, index: usize) -> Option<&(dyn PartialReflect + 'static)>

Gets a reference to the value of the field with index index as a &dyn PartialReflect.

fn field_at_mut( &mut self, index: usize, ) -> Option<&mut (dyn PartialReflect + 'static)>

Gets a mutable reference to the value of the field with index index as a &mut dyn PartialReflect.

fn name_at(&self, index: usize) -> Option<&str>

Gets the name of the field with index index.

fn index_of_name(&self, name: &str) -> Option<usize>

Gets the index of the field with the given name.

fn field_len(&self) -> usize

Returns the number of fields in the struct.

fn iter_fields(&self) -> FieldIter<'_>

Returns an iterator over the values of the reflectable fields for this struct.

fn to_dynamic_struct(&self) -> DynamicStruct

Creates a new DynamicStruct from this struct.

fn get_represented_struct_info(&self) -> Option<&'static StructInfo>

Will return None if TypeInfo is not available.

impl TypePath for Rectangle

fn type_path() -> &'static str

Returns the fully qualified path of the underlying type.

fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type.

fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous.

fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous.

fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous.

impl Typed for Rectangle

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

impl Copy for Rectangle

impl Primitive2d for Rectangle

impl StructuralPartialEq for Rectangle