Struct LinearRgba

#[repr(C)]
pub struct LinearRgba {
    pub red: f32,
    pub green: f32,
    pub blue: f32,
    pub alpha: f32,
}

Linear RGB color with alpha.

Conversion

Conversion between the various color spaces is achieved using Rust’s native From trait. Because certain color spaces are defined by their transformation to and from another space, these From implementations reflect that set of definitions.

let color = Srgba::rgb(0.5, 0.5, 0.5);

// Using From explicitly
let linear_color = LinearRgba::from(color);

// Using Into
let linear_color: LinearRgba = color.into();

For example, the sRGB space is defined by its relationship with Linear RGB, and HWB by its with sRGB. As such, it is the responsibility of sRGB to provide From implementations for Linear RGB, and HWB for sRGB. To then provide conversion between Linear RGB and HWB directly, HWB is responsible for implementing these conversions, delegating to sRGB as an intermediatory. This ensures that all conversions take the shortest path between any two spaces, and limit the proliferation of domain specific knowledge for each color space to their respective definitions.

Fields

red: f32

The red channel. [0.0, 1.0]

green: f32

The green channel. [0.0, 1.0]

blue: f32

The blue channel. [0.0, 1.0]

alpha: f32

The alpha channel. [0.0, 1.0]

Implementations

impl LinearRgba

pub const BLACK: LinearRgba

A fully black color with full alpha.

pub const WHITE: LinearRgba

A fully white color with full alpha.

pub const NONE: LinearRgba

A fully transparent color.

pub const RED: LinearRgba

A fully red color with full alpha.

pub const GREEN: LinearRgba

A fully green color with full alpha.

pub const BLUE: LinearRgba

A fully blue color with full alpha.

pub const NAN: LinearRgba

An invalid color.

This type can be used to represent an invalid color value; in some rendering applications the color will be ignored, enabling performant hacks like hiding lines by setting their color to INVALID.

pub const fn new(red: f32, green: f32, blue: f32, alpha: f32) -> LinearRgba

Construct a new LinearRgba color from components.

Examples found in repository

examples/3d/spotlight.rs (line 77)

fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<StandardMaterial>>,
) {
    // ground plane
    commands.spawn((
        Mesh3d(meshes.add(Plane3d::default().mesh().size(100.0, 100.0))),
        MeshMaterial3d(materials.add(Color::WHITE)),
        Movable,
    ));

    // cubes

    // 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.
    let mut rng = ChaCha8Rng::seed_from_u64(19878367467713);
    let cube_mesh = meshes.add(Cuboid::new(0.5, 0.5, 0.5));
    let blue = materials.add(Color::srgb_u8(124, 144, 255));

    commands.spawn_batch(
        std::iter::repeat_with(move || {
            let x = rng.gen_range(-5.0..5.0);
            let y = rng.gen_range(0.0..3.0);
            let z = rng.gen_range(-5.0..5.0);

            (
                Mesh3d(cube_mesh.clone()),
                MeshMaterial3d(blue.clone()),
                Transform::from_xyz(x, y, z),
                Movable,
            )
        })
        .take(40),
    );

    let sphere_mesh = meshes.add(Sphere::new(0.05).mesh().uv(32, 18));
    let sphere_mesh_direction = meshes.add(Sphere::new(0.1).mesh().uv(32, 18));
    let red_emissive = materials.add(StandardMaterial {
        base_color: RED.into(),
        emissive: LinearRgba::new(1.0, 0.0, 0.0, 0.0),
        ..default()
    });
    let maroon_emissive = materials.add(StandardMaterial {
        base_color: MAROON.into(),
        emissive: LinearRgba::new(0.369, 0.0, 0.0, 0.0),
        ..default()
    });

    for x in 0..4 {
        for z in 0..4 {
            let x = x as f32 - 2.0;
            let z = z as f32 - 2.0;
            // red spot_light
            commands
                .spawn((
                    SpotLight {
                        intensity: 40_000.0, // lumens
                        color: Color::WHITE,
                        shadows_enabled: true,
                        inner_angle: PI / 4.0 * 0.85,
                        outer_angle: PI / 4.0,
                        ..default()
                    },
                    Transform::from_xyz(1.0 + x, 2.0, z)
                        .looking_at(Vec3::new(1.0 + x, 0.0, z), Vec3::X),
                ))
                .with_children(|builder| {
                    builder.spawn((
                        Mesh3d(sphere_mesh.clone()),
                        MeshMaterial3d(red_emissive.clone()),
                    ));
                    builder.spawn((
                        Mesh3d(sphere_mesh_direction.clone()),
                        MeshMaterial3d(maroon_emissive.clone()),
                        Transform::from_translation(Vec3::Z * -0.1),
                        NotShadowCaster,
                    ));
                });
        }
    }

    // camera
    commands.spawn((
        Camera3d::default(),
        Camera {
            hdr: true,
            ..default()
        },
        Transform::from_xyz(-4.0, 5.0, 10.0).looking_at(Vec3::ZERO, Vec3::Y),
    ));

    commands.spawn((
        Text::new(INSTRUCTIONS),
        Node {
            position_type: PositionType::Absolute,
            top: Val::Px(12.0),
            left: Val::Px(12.0),
            ..default()
        },
    ));
}

examples/3d/lighting.rs (line 133)

fn setup(
    parameters: Res<Parameters>,
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<StandardMaterial>>,
    asset_server: Res<AssetServer>,
) {
    // ground plane
    commands.spawn((
        Mesh3d(meshes.add(Plane3d::default().mesh().size(10.0, 10.0))),
        MeshMaterial3d(materials.add(StandardMaterial {
            base_color: Color::WHITE,
            perceptual_roughness: 1.0,
            ..default()
        })),
    ));

    // left wall
    let mut transform = Transform::from_xyz(2.5, 2.5, 0.0);
    transform.rotate_z(PI / 2.);
    commands.spawn((
        Mesh3d(meshes.add(Cuboid::new(5.0, 0.15, 5.0))),
        MeshMaterial3d(materials.add(StandardMaterial {
            base_color: INDIGO.into(),
            perceptual_roughness: 1.0,
            ..default()
        })),
        transform,
    ));
    // back (right) wall
    let mut transform = Transform::from_xyz(0.0, 2.5, -2.5);
    transform.rotate_x(PI / 2.);
    commands.spawn((
        Mesh3d(meshes.add(Cuboid::new(5.0, 0.15, 5.0))),
        MeshMaterial3d(materials.add(StandardMaterial {
            base_color: INDIGO.into(),
            perceptual_roughness: 1.0,
            ..default()
        })),
        transform,
    ));

    // Bevy logo to demonstrate alpha mask shadows
    let mut transform = Transform::from_xyz(-2.2, 0.5, 1.0);
    transform.rotate_y(PI / 8.);
    commands.spawn((
        Mesh3d(meshes.add(Rectangle::new(2.0, 0.5))),
        MeshMaterial3d(materials.add(StandardMaterial {
            base_color_texture: Some(asset_server.load("branding/bevy_logo_light.png")),
            perceptual_roughness: 1.0,
            alpha_mode: AlphaMode::Mask(0.5),
            cull_mode: None,
            ..default()
        })),
        transform,
        Movable,
    ));

    // cube
    commands.spawn((
        Mesh3d(meshes.add(Cuboid::default())),
        MeshMaterial3d(materials.add(StandardMaterial {
            base_color: DEEP_PINK.into(),
            ..default()
        })),
        Transform::from_xyz(0.0, 0.5, 0.0),
        Movable,
    ));
    // sphere
    commands.spawn((
        Mesh3d(meshes.add(Sphere::new(0.5).mesh().uv(32, 18))),
        MeshMaterial3d(materials.add(StandardMaterial {
            base_color: LIMEGREEN.into(),
            ..default()
        })),
        Transform::from_xyz(1.5, 1.0, 1.5),
        Movable,
    ));

    // ambient light
    commands.insert_resource(AmbientLight {
        color: ORANGE_RED.into(),
        brightness: 0.02,
        ..default()
    });

    // red point light
    commands.spawn((
        PointLight {
            intensity: 100_000.0,
            color: RED.into(),
            shadows_enabled: true,
            ..default()
        },
        Transform::from_xyz(1.0, 2.0, 0.0),
        children![(
            Mesh3d(meshes.add(Sphere::new(0.1).mesh().uv(32, 18))),
            MeshMaterial3d(materials.add(StandardMaterial {
                base_color: RED.into(),
                emissive: LinearRgba::new(4.0, 0.0, 0.0, 0.0),
                ..default()
            })),
        )],
    ));

    // green spot light
    commands.spawn((
        SpotLight {
            intensity: 100_000.0,
            color: LIME.into(),
            shadows_enabled: true,
            inner_angle: 0.6,
            outer_angle: 0.8,
            ..default()
        },
        Transform::from_xyz(-1.0, 2.0, 0.0).looking_at(Vec3::new(-1.0, 0.0, 0.0), Vec3::Z),
        children![(
            Mesh3d(meshes.add(Capsule3d::new(0.1, 0.125))),
            MeshMaterial3d(materials.add(StandardMaterial {
                base_color: LIME.into(),
                emissive: LinearRgba::new(0.0, 4.0, 0.0, 0.0),
                ..default()
            })),
            Transform::from_rotation(Quat::from_rotation_x(PI / 2.0)),
        )],
    ));

    // blue point light
    commands.spawn((
        PointLight {
            intensity: 100_000.0,
            color: BLUE.into(),
            shadows_enabled: true,
            ..default()
        },
        Transform::from_xyz(0.0, 4.0, 0.0),
        children![(
            Mesh3d(meshes.add(Sphere::new(0.1).mesh().uv(32, 18))),
            MeshMaterial3d(materials.add(StandardMaterial {
                base_color: BLUE.into(),
                emissive: LinearRgba::new(0.0, 0.0, 713.0, 0.0),
                ..default()
            })),
        )],
    ));

    // directional 'sun' light
    commands.spawn((
        DirectionalLight {
            illuminance: light_consts::lux::OVERCAST_DAY,
            shadows_enabled: true,
            ..default()
        },
        Transform {
            translation: Vec3::new(0.0, 2.0, 0.0),
            rotation: Quat::from_rotation_x(-PI / 4.),
            ..default()
        },
        // The default cascade config is designed to handle large scenes.
        // As this example has a much smaller world, we can tighten the shadow
        // bounds for better visual quality.
        CascadeShadowConfigBuilder {
            first_cascade_far_bound: 4.0,
            maximum_distance: 10.0,
            ..default()
        }
        .build(),
    ));

    // example instructions

    commands.spawn((
        Text::default(),
        Node {
            position_type: PositionType::Absolute,
            top: Val::Px(12.0),
            left: Val::Px(12.0),
            ..default()
        },
        children![
            TextSpan(format!("Aperture: f/{:.0}\n", parameters.aperture_f_stops,)),
            TextSpan(format!(
                "Shutter speed: 1/{:.0}s\n",
                1.0 / parameters.shutter_speed_s
            )),
            TextSpan(format!(
                "Sensitivity: ISO {:.0}\n",
                parameters.sensitivity_iso
            )),
            TextSpan::new("\n\n"),
            TextSpan::new("Controls\n"),
            TextSpan::new("---------------\n"),
            TextSpan::new("Arrow keys - Move objects\n"),
            TextSpan::new("1/2 - Decrease/Increase aperture\n"),
            TextSpan::new("3/4 - Decrease/Increase shutter speed\n"),
            TextSpan::new("5/6 - Decrease/Increase sensitivity\n"),
            TextSpan::new("R - Reset exposure"),
        ],
    ));

    // camera
    commands.spawn((
        Camera3d::default(),
        Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
        Exposure::from_physical_camera(**parameters),
    ));
}

pub const fn rgb(red: f32, green: f32, blue: f32) -> LinearRgba

Construct a new LinearRgba color from (r, g, b) components, with the default alpha (1.0).

Arguments

• red - Red channel. [0.0, 1.0]
• green - Green channel. [0.0, 1.0]
• blue - Blue channel. [0.0, 1.0]

Examples found in repository

examples/math/sampling_primitives.rs (line 56)

const INSIDE_POINT_COLOR: LinearRgba = LinearRgba::rgb(0.855, 1.1, 0.01);
/// Color used for the points on the boundary
const BOUNDARY_POINT_COLOR: LinearRgba = LinearRgba::rgb(0.08, 0.2, 0.90);

examples/stress_tests/many_gizmos.rs (line 75)

fn system(config: Res<Config>, time: Res<Time>, mut draw: Gizmos) {
    if !config.fancy {
        for _ in 0..(config.line_count / SYSTEM_COUNT) {
            draw.line(Vec3::NEG_Y, Vec3::Y, Color::BLACK);
        }
    } else {
        for i in 0..(config.line_count / SYSTEM_COUNT) {
            let angle = i as f32 / (config.line_count / SYSTEM_COUNT) as f32 * TAU;

            let vector = Vec2::from(ops::sin_cos(angle)).extend(ops::sin(time.elapsed_secs()));
            let start_color = LinearRgba::rgb(vector.x, vector.z, 0.5);
            let end_color = LinearRgba::rgb(-vector.z, -vector.y, 0.5);

            draw.line_gradient(vector, -vector, start_color, end_color);
        }
    }
}

examples/testbed/3d.rs (line 169)

    pub fn setup(
        mut commands: Commands,
        mut meshes: ResMut<Assets<Mesh>>,
        mut materials: ResMut<Assets<StandardMaterial>>,
    ) {
        commands.spawn((
            Camera3d::default(),
            Camera {
                hdr: true,
                ..default()
            },
            Tonemapping::TonyMcMapface,
            Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
            Bloom::NATURAL,
            StateScoped(CURRENT_SCENE),
        ));

        let material_emissive1 = materials.add(StandardMaterial {
            emissive: LinearRgba::rgb(13.99, 5.32, 2.0),
            ..default()
        });
        let material_emissive2 = materials.add(StandardMaterial {
            emissive: LinearRgba::rgb(2.0, 13.99, 5.32),
            ..default()
        });

        let mesh = meshes.add(Sphere::new(0.5).mesh().ico(5).unwrap());

        for z in -2..3_i32 {
            let material = match (z % 2).abs() {
                0 => material_emissive1.clone(),
                1 => material_emissive2.clone(),
                _ => unreachable!(),
            };

            commands.spawn((
                Mesh3d(mesh.clone()),
                MeshMaterial3d(material),
                Transform::from_xyz(z as f32 * 2.0, 0.0, 0.0),
                StateScoped(CURRENT_SCENE),
            ));
        }
    }

examples/animation/color_animation.rs (line 47)

fn setup(mut commands: Commands) {
    commands.spawn(Camera2d);

    // The color spaces `Oklaba`, `Laba`, `LinearRgba`, `Srgba` and `Xyza` all are either perceptually or physically linear.
    // This property allows us to define curves, e.g. bezier curves through these spaces.

    // Define the control points for the curve.
    // For more information, please see the cubic curve example.
    let colors = [
        LinearRgba::WHITE,
        LinearRgba::rgb(1., 1., 0.), // Yellow
        LinearRgba::RED,
        LinearRgba::BLACK,
    ];
    // Spawn a sprite using the provided colors as control points.
    spawn_curve_sprite(&mut commands, 275., colors);

    // Spawn another sprite using the provided colors as control points after converting them to the `Xyza` color space.
    spawn_curve_sprite(&mut commands, 175., colors.map(Xyza::from));

    spawn_curve_sprite(&mut commands, 75., colors.map(Oklaba::from));

    // Other color spaces like `Srgba` or `Hsva` are neither perceptually nor physically linear.
    // As such, we cannot use curves in these spaces.
    // However, we can still mix these colors and animate that way. In fact, mixing colors works in any color space.

    // Spawn a sprite using the provided colors for mixing.
    spawn_mixed_sprite(&mut commands, -75., colors.map(Hsla::from));

    spawn_mixed_sprite(&mut commands, -175., colors.map(Srgba::from));

    spawn_mixed_sprite(&mut commands, -275., colors.map(Oklcha::from));
}

examples/ecs/error_handling.rs (line 115)

fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<StandardMaterial>>,
) -> Result {
    let mut seeded_rng = ChaCha8Rng::seed_from_u64(19878367467712);

    // Make a plane for establishing space.
    commands.spawn((
        Mesh3d(meshes.add(Plane3d::default().mesh().size(12.0, 12.0))),
        MeshMaterial3d(materials.add(Color::srgb(0.3, 0.5, 0.3))),
        Transform::from_xyz(0.0, -2.5, 0.0),
    ));

    // Spawn a light:
    commands.spawn((
        PointLight {
            shadows_enabled: true,
            ..default()
        },
        Transform::from_xyz(4.0, 8.0, 4.0),
    ));

    // Spawn a camera:
    commands.spawn((
        Camera3d::default(),
        Transform::from_xyz(-2.0, 3.0, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
    ));

    // Create a new sphere mesh:
    let mut sphere_mesh = Sphere::new(1.0).mesh().ico(7)?;
    sphere_mesh.generate_tangents()?;

    // Spawn the mesh into the scene:
    let mut sphere = commands.spawn((
        Mesh3d(meshes.add(sphere_mesh.clone())),
        MeshMaterial3d(materials.add(StandardMaterial::default())),
        Transform::from_xyz(-1.0, 1.0, 0.0),
    ));

    // Generate random sample points:
    let triangles = sphere_mesh.triangles()?;
    let distribution = UniformMeshSampler::try_new(triangles)?;

    // Setup sample points:
    let point_mesh = meshes.add(Sphere::new(0.01).mesh().ico(3)?);
    let point_material = materials.add(StandardMaterial {
        base_color: Srgba::RED.into(),
        emissive: LinearRgba::rgb(1.0, 0.0, 0.0),
        ..default()
    });

    // Add sample points as children of the sphere:
    for point in distribution.sample_iter(&mut seeded_rng).take(10000) {
        sphere.with_child((
            Mesh3d(point_mesh.clone()),
            MeshMaterial3d(point_material.clone()),
            Transform::from_translation(point),
        ));
    }

    // Indicate the system completed successfully:
    Ok(())
}

examples/3d/bloom_3d.rs (line 42)

fn setup_scene(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<StandardMaterial>>,
) {
    commands.spawn((
        Camera3d::default(),
        Camera {
            hdr: true, // 1. HDR is required for bloom
            clear_color: ClearColorConfig::Custom(Color::BLACK),
            ..default()
        },
        Tonemapping::TonyMcMapface, // 2. Using a tonemapper that desaturates to white is recommended
        Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
        Bloom::NATURAL, // 3. Enable bloom for the camera
    ));

    let material_emissive1 = materials.add(StandardMaterial {
        emissive: LinearRgba::rgb(0.0, 0.0, 150.0), // 4. Put something bright in a dark environment to see the effect
        ..default()
    });
    let material_emissive2 = materials.add(StandardMaterial {
        emissive: LinearRgba::rgb(1000.0, 1000.0, 1000.0),
        ..default()
    });
    let material_emissive3 = materials.add(StandardMaterial {
        emissive: LinearRgba::rgb(50.0, 0.0, 0.0),
        ..default()
    });
    let material_non_emissive = materials.add(StandardMaterial {
        base_color: Color::BLACK,
        ..default()
    });

    let mesh = meshes.add(Sphere::new(0.4).mesh().ico(5).unwrap());

    for x in -5..5 {
        for z in -5..5 {
            // This generates a pseudo-random integer between `[0, 6)`, but deterministically so
            // the same spheres are always the same colors.
            let mut hasher = DefaultHasher::new();
            (x, z).hash(&mut hasher);
            let rand = (hasher.finish() + 3) % 6;

            let (material, scale) = match rand {
                0 => (material_emissive1.clone(), 0.5),
                1 => (material_emissive2.clone(), 0.1),
                2 => (material_emissive3.clone(), 1.0),
                3..=5 => (material_non_emissive.clone(), 1.5),
                _ => unreachable!(),
            };

            commands.spawn((
                Mesh3d(mesh.clone()),
                MeshMaterial3d(material),
                Transform::from_xyz(x as f32 * 2.0, 0.0, z as f32 * 2.0)
                    .with_scale(Vec3::splat(scale)),
                Bouncing,
            ));
        }
    }

    // example instructions
    commands.spawn((
        Text::default(),
        Node {
            position_type: PositionType::Absolute,
            bottom: Val::Px(12.0),
            left: Val::Px(12.0),
            ..default()
        },
    ));
}

pub const fn with_red(self, red: f32) -> LinearRgba

Return a copy of this color with the red channel set to the given value.

pub const fn with_green(self, green: f32) -> LinearRgba

Return a copy of this color with the green channel set to the given value.

pub const fn with_blue(self, blue: f32) -> LinearRgba

Return a copy of this color with the blue channel set to the given value.

pub fn as_u32(&self) -> u32

Converts this color to a u32.

Maps the RGBA channels in RGBA order to a little-endian byte array (GPUs are little-endian). A will be the most significant byte and R the least significant.

Examples found in repository

examples/2d/mesh2d_manual.rs (line 90)

fn star(
    mut commands: Commands,
    // We will add a new Mesh for the star being created
    mut meshes: ResMut<Assets<Mesh>>,
) {
    // Let's define the mesh for the object we want to draw: a nice star.
    // We will specify here what kind of topology is used to define the mesh,
    // that is, how triangles are built from the vertices. We will use a
    // triangle list, meaning that each vertex of the triangle has to be
    // specified. We set `RenderAssetUsages::RENDER_WORLD`, meaning this mesh
    // will not be accessible in future frames from the `meshes` resource, in
    // order to save on memory once it has been uploaded to the GPU.
    let mut star = Mesh::new(
        PrimitiveTopology::TriangleList,
        RenderAssetUsages::RENDER_WORLD,
    );

    // Vertices need to have a position attribute. We will use the following
    // vertices (I hope you can spot the star in the schema).
    //
    //        1
    //
    //     10   2
    // 9      0      3
    //     8     4
    //        6
    //   7        5
    //
    // These vertices are specified in 3D space.
    let mut v_pos = vec![[0.0, 0.0, 0.0]];
    for i in 0..10 {
        // The angle between each vertex is 1/10 of a full rotation.
        let a = i as f32 * PI / 5.0;
        // The radius of inner vertices (even indices) is 100. For outer vertices (odd indices) it's 200.
        let r = (1 - i % 2) as f32 * 100.0 + 100.0;
        // Add the vertex position.
        v_pos.push([r * ops::sin(a), r * ops::cos(a), 0.0]);
    }
    // Set the position attribute
    star.insert_attribute(Mesh::ATTRIBUTE_POSITION, v_pos);
    // And a RGB color attribute as well. A built-in `Mesh::ATTRIBUTE_COLOR` exists, but we
    // use a custom vertex attribute here for demonstration purposes.
    let mut v_color: Vec<u32> = vec![LinearRgba::BLACK.as_u32()];
    v_color.extend_from_slice(&[LinearRgba::from(YELLOW).as_u32(); 10]);
    star.insert_attribute(
        MeshVertexAttribute::new("Vertex_Color", 1, VertexFormat::Uint32),
        v_color,
    );

    // Now, we specify the indices of the vertex that are going to compose the
    // triangles in our star. Vertices in triangles have to be specified in CCW
    // winding (that will be the front face, colored). Since we are using
    // triangle list, we will specify each triangle as 3 vertices
    //   First triangle: 0, 2, 1
    //   Second triangle: 0, 3, 2
    //   Third triangle: 0, 4, 3
    //   etc
    //   Last triangle: 0, 1, 10
    let mut indices = vec![0, 1, 10];
    for i in 2..=10 {
        indices.extend_from_slice(&[0, i, i - 1]);
    }
    star.insert_indices(Indices::U32(indices));

    // We can now spawn the entities for the star and the camera
    commands.spawn((
        // We use a marker component to identify the custom colored meshes
        ColoredMesh2d,
        // The `Handle<Mesh>` needs to be wrapped in a `Mesh2d` for 2D rendering
        Mesh2d(meshes.add(star)),
    ));

    commands.spawn(Camera2d);
}

Trait Implementations

impl Add for LinearRgba

type Output = LinearRgba

The resulting type after applying the + operator.

fn add(self, rhs: LinearRgba) -> <LinearRgba as Add>::Output

Performs the + operation.

impl AddAssign for LinearRgba

fn add_assign(&mut self, rhs: LinearRgba)

Performs the += operation.

impl Alpha for LinearRgba

fn with_alpha(&self, alpha: f32) -> LinearRgba

Return a new version of this color with the given alpha value.

fn alpha(&self) -> f32

Return a the alpha component of this color.

fn set_alpha(&mut self, alpha: f32)

Sets the alpha component of this color.

fn is_fully_transparent(&self) -> bool

Is the alpha component of this color less than or equal to 0.0?

fn is_fully_opaque(&self) -> bool

Is the alpha component of this color greater than or equal to 1.0?

impl Animatable for LinearRgba

fn interpolate(a: &LinearRgba, b: &LinearRgba, t: f32) -> LinearRgba

Interpolates between a and b with an interpolation factor of time.

fn blend(inputs: impl Iterator<Item = BlendInput<LinearRgba>>) -> LinearRgba

Blends one or more values together.

impl Clone for LinearRgba

fn clone(&self) -> LinearRgba

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ColorToComponents for LinearRgba

fn to_f32_array(self) -> [f32; 4]

Convert to an f32 array

fn to_f32_array_no_alpha(self) -> [f32; 3]

Convert to an f32 array without the alpha value

fn to_vec4(self) -> Vec4

Convert to a Vec4

fn to_vec3(self) -> Vec3

Convert to a Vec3

fn from_f32_array(color: [f32; 4]) -> LinearRgba

Convert from an f32 array

fn from_f32_array_no_alpha(color: [f32; 3]) -> LinearRgba

Convert from an f32 array without the alpha value

fn from_vec4(color: Vec4) -> LinearRgba

Convert from a Vec4

fn from_vec3(color: Vec3) -> LinearRgba

Convert from a Vec3

impl ColorToPacked for LinearRgba

fn to_u8_array(self) -> [u8; 4]

Convert to [u8; 4] where that makes sense (Srgba is most relevant)

fn to_u8_array_no_alpha(self) -> [u8; 3]

Convert to [u8; 3] where that makes sense (Srgba is most relevant)

fn from_u8_array(color: [u8; 4]) -> LinearRgba

Convert from [u8; 4] where that makes sense (Srgba is most relevant)

fn from_u8_array_no_alpha(color: [u8; 3]) -> LinearRgba

Convert to [u8; 3] where that makes sense (Srgba is most relevant)

impl CreateFrom for LinearRgba

fn create_from<B>(reader: &mut Reader<B>) -> LinearRgba

where B: BufferRef,

impl Debug for LinearRgba

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

Formats the value using the given formatter.

impl Default for LinearRgba

fn default() -> LinearRgba

Construct a new LinearRgba color with the default values (white with full alpha).

impl<'de> Deserialize<'de> for LinearRgba

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Div<f32> for LinearRgba

type Output = LinearRgba

The resulting type after applying the / operator.

fn div(self, rhs: f32) -> <LinearRgba as Div<f32>>::Output

Performs the / operation.

impl DivAssign<f32> for LinearRgba

fn div_assign(&mut self, rhs: f32)

Performs the /= operation.

impl EuclideanDistance for LinearRgba

fn distance_squared(&self, other: &LinearRgba) -> f32

Distance squared from self to other.

fn distance(&self, other: &Self) -> f32

Distance from self to other.

impl From<Color> for LinearRgba

fn from(value: Color) -> LinearRgba

Converts to this type from the input type.

impl From<Hsla> for LinearRgba

fn from(value: Hsla) -> LinearRgba

Converts to this type from the input type.

impl From<Hsva> for LinearRgba

fn from(value: Hsva) -> LinearRgba

Converts to this type from the input type.

impl From<Hwba> for LinearRgba

fn from(value: Hwba) -> LinearRgba

Converts to this type from the input type.

impl From<Laba> for LinearRgba

fn from(value: Laba) -> LinearRgba

Converts to this type from the input type.

impl From<Lcha> for LinearRgba

fn from(value: Lcha) -> LinearRgba

Converts to this type from the input type.

impl From<LinearRgba> for Color

fn from(value: LinearRgba) -> Color

Converts to this type from the input type.

impl From<LinearRgba> for Color

fn from(color: LinearRgba) -> Color

Converts to this type from the input type.

impl From<LinearRgba> for Hsla

fn from(value: LinearRgba) -> Hsla

Converts to this type from the input type.

impl From<LinearRgba> for Hsva

fn from(value: LinearRgba) -> Hsva

Converts to this type from the input type.

impl From<LinearRgba> for Hwba

fn from(value: LinearRgba) -> Hwba

Converts to this type from the input type.

impl From<LinearRgba> for Laba

fn from(value: LinearRgba) -> Laba

Converts to this type from the input type.

impl From<LinearRgba> for Lcha

fn from(value: LinearRgba) -> Lcha

Converts to this type from the input type.

impl From<LinearRgba> for Oklaba

fn from(value: LinearRgba) -> Oklaba

Converts to this type from the input type.

impl From<LinearRgba> for Oklcha

fn from(value: LinearRgba) -> Oklcha

Converts to this type from the input type.

impl From<LinearRgba> for Srgba

fn from(value: LinearRgba) -> Srgba

Converts to this type from the input type.

impl From<LinearRgba> for Xyza

fn from(_: LinearRgba) -> Xyza

Converts to this type from the input type.

impl From<Oklaba> for LinearRgba

fn from(value: Oklaba) -> LinearRgba

Converts to this type from the input type.

impl From<Oklcha> for LinearRgba

fn from(value: Oklcha) -> LinearRgba

Converts to this type from the input type.

impl From<Srgba> for LinearRgba

fn from(value: Srgba) -> LinearRgba

Converts to this type from the input type.

impl From<Xyza> for LinearRgba

fn from(_: Xyza) -> LinearRgba

Converts to this type from the input type.

impl FromArg for &'static LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

type This<'from_arg> = &'from_arg LinearRgba

The type to convert into.

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

Creates an item from an argument.

impl FromArg for &'static mut LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

type This<'from_arg> = &'from_arg mut LinearRgba

The type to convert into.

fn from_arg( arg: Arg<'_>, ) -> Result<<&'static mut LinearRgba as FromArg>::This<'_>, ArgError>

Creates an item from an argument.

impl FromArg for LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

type This<'from_arg> = LinearRgba

The type to convert into.

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

Creates an item from an argument.

impl FromReflect for LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

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

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 &LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn ownership() -> Ownership

Returns the ownership of Self.

impl GetOwnership for &mut LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn ownership() -> Ownership

Returns the ownership of Self.

impl GetOwnership for LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn ownership() -> Ownership

Returns the ownership of Self.

impl GetTypeRegistration for LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

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 Gray for LinearRgba

const BLACK: LinearRgba = Self::BLACK

A pure black color.

const WHITE: LinearRgba = Self::WHITE

A pure white color.

fn gray(lightness: f32) -> Self

Returns a grey color with the provided lightness from (0.0 - 1.0). 0 is black, 1 is white.

impl IntoReturn for &LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

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

where &LinearRgba: 'into_return,

Converts Self into a Return value.

impl IntoReturn for &mut LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

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

where &mut LinearRgba: 'into_return,

Converts Self into a Return value.

impl IntoReturn for LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

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

where LinearRgba: 'into_return,

Converts Self into a Return value.

impl Luminance for LinearRgba

fn luminance(&self) -> f32

Luminance calculated using the CIE XYZ formula.

fn with_luminance(&self, luminance: f32) -> LinearRgba

Return a new version of this color with the given luminance. The resulting color will be clamped to the valid range for the color space; for some color spaces, clamping may cause the hue or chroma to change.

fn darker(&self, amount: f32) -> LinearRgba

Return a darker version of this color. The amount should be between 0.0 and 1.0. The amount represents an absolute decrease in luminance, and is distributive: color.darker(a).darker(b) == color.darker(a + b). Colors are clamped to black if the amount would cause them to go below black.

fn lighter(&self, amount: f32) -> LinearRgba

Return a lighter version of this color. The amount should be between 0.0 and 1.0. The amount represents an absolute increase in luminance, and is distributive: color.lighter(a).lighter(b) == color.lighter(a + b). Colors are clamped to white if the amount would cause them to go above white.

impl Mix for LinearRgba

fn mix(&self, other: &LinearRgba, factor: f32) -> LinearRgba

Linearly interpolate between this and another color, by factor. Factor should be between 0.0 and 1.0.

fn mix_assign(&mut self, other: Self, factor: f32)

Linearly interpolate between this and another color, by factor, storing the result in this color. Factor should be between 0.0 and 1.0.

impl Mul<LinearRgba> for f32

type Output = LinearRgba

The resulting type after applying the * operator.

fn mul(self, rhs: LinearRgba) -> <f32 as Mul<LinearRgba>>::Output

Performs the * operation.

impl Mul<f32> for LinearRgba

type Output = LinearRgba

The resulting type after applying the * operator.

fn mul(self, rhs: f32) -> <LinearRgba as Mul<f32>>::Output

Performs the * operation.

impl MulAssign<f32> for LinearRgba

fn mul_assign(&mut self, rhs: f32)

Performs the *= operation.

impl Neg for LinearRgba

type Output = LinearRgba

The resulting type after applying the - operator.

fn neg(self) -> <LinearRgba as Neg>::Output

Performs the unary - operation.

impl PartialEq for LinearRgba

fn eq(&self, other: &LinearRgba) -> 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 LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

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<LinearRgba>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type.

fn try_into_reflect( self: Box<LinearRgba>, ) -> 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<LinearRgba>) -> 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_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 clone_value(&self) -> Box<dyn PartialReflect>

👎Deprecated since 0.16.0: to clone reflected values, prefer using reflect_clone. To convert reflected values to dynamic ones, use to_dynamic.

Clones Self into its dynamic representation.

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

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

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

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

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

Debug formatter for the value.

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl ReadFrom for LinearRgba

fn read_from<B>(&mut self, reader: &mut Reader<B>)

where B: BufferRef,

impl Reflect for LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn into_any(self: Box<LinearRgba>) -> 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<LinearRgba>) -> 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 LinearRgba

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 ShaderSize for LinearRgba

const SHADER_SIZE: NonZero<u64> = _

Represents WGSL Size (equivalent to ShaderType::min_size)

impl ShaderType for LinearRgba

fn min_size() -> NonZero<u64>

Represents the minimum size of Self (equivalent to GPUBufferBindingLayout.minBindingSize)

fn size(&self) -> NonZero<u64>

Returns the size of Self at runtime

fn assert_uniform_compat()

Asserts that Self meets the requirements of the uniform address space restrictions on stored values and the uniform address space layout constraints

impl Struct for LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

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

Returns 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)>

Returns 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)>

Returns 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)>

Returns 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>

Returns the name of the field with index index.

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

fn clone_dynamic(&self) -> DynamicStruct

👎Deprecated since 0.16.0: use to_dynamic_struct instead

Clones the struct into a DynamicStruct.

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

Will return None if TypeInfo is not available.

impl Sub for LinearRgba

type Output = LinearRgba

The resulting type after applying the - operator.

fn sub(self, rhs: LinearRgba) -> <LinearRgba as Sub>::Output

Performs the - operation.

impl SubAssign for LinearRgba

fn sub_assign(&mut self, rhs: LinearRgba)

Performs the -= operation.

impl TypePath for LinearRgba

where LinearRgba: Any + Send + Sync,

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 LinearRgba

where LinearRgba: Any + Send + Sync, f32: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

impl VectorSpace for LinearRgba

const ZERO: LinearRgba

The zero vector, which is the identity of addition for the vector space type.

fn lerp(self, rhs: Self, t: f32) -> Self

Perform vector space linear interpolation between this element and another, based on the parameter t. When t is 0, self is recovered. When t is 1, rhs is recovered.

impl WriteInto for LinearRgba

fn write_into<B>(&self, writer: &mut Writer<B>)

where B: BufferMut,

impl Zeroable for LinearRgba

fn zeroed() -> Self

Calls zeroed.

impl Copy for LinearRgba

impl Pod for LinearRgba

impl StructuralPartialEq for LinearRgba