Enum screen_13::gpu::draw::Draw

pub enum Draw {
    Line(LineCommand),
    Model(ModelCommand),
    PointLight(PointLightCommand),
    RectLight(RectLightCommand),
    Spotlight(SpotlightCommand),
    Sunlight(SunlightCommand),
}

An expressive type which allows specification of individual drawing operations.

Variants

Line(LineCommand)

Draws a line segment.

Model(ModelCommand)

Draws a model.

PointLight(PointLightCommand)

Draws a point light.

RectLight(RectLightCommand)

Draws a rectangular light.

Spotlight(SpotlightCommand)

Draws a spotlight.

Sunlight(SunlightCommand)

Draws sunlight.

Implementations

impl Command

pub fn line<S: Into<Vec3>, SC: Into<AlphaColor>, E: Into<Vec3>, EC: Into<AlphaColor>>(
    start: S,
    start_color: SC,
    end: E,
    end_color: EC
) -> Self

Draws a line between the given coordinates using a constant width and two colors. The colors specify a gradient if they differ. Generally intended to support debugging use cases such as drawing bounding boxes.

pub fn model<M: Into<Mesh>>(
    mesh: M,
    material: Material,
    transform: Mat4
) -> Self

Draws a model using the given material and world transform.

pub fn point_light(center: Vec3, color: Color, lumens: f32, radius: f32) -> Self

Draws a point light using the given values.

pub fn spotlight(
    color: Color,
    lumens: f32,
    position: Vec3,
    normal: Vec3,
    range: Range<f32>,
    cone_angle: f32,
    penumbra_angle: f32
) -> Self

Draws a spotlight with the given color, position/orientation, and shape.

Note: Spotlights have a hemispherical cap on the bottom, so a given range will be the maximum range and you may not see any light on objects at that distance. Move the light a bit towards the object to enter the penumbra.

Arguments

• color - Full-bright color of the cone area.
• power - sRGB power value normalized for gamma, can be greater than 1.0.
• pos - Position of the pointy end of the spotlight.
• normal - Orientation of the spotlight from pos towards the spotlight target.
• range - Define the full-bright section along normal.
• cone_angle - Interior angle of the full-bright portion of the spotlight, in degrees.
• penumbra_angle - Additional angle which fades from color to tranparent, in degrees.