Struct TileCompositor 

pub struct TileCompositor {
    pub width: u32,
    pub height: u32,
    pub background: Rgba,
}

Composites a stack of Layers into a single image tile.

Fields

width: u32

height: u32

background: Rgba

Background colour drawn beneath all layers.

Implementations

impl TileCompositor

pub fn new(width: u32, height: u32, background: Rgba) -> Self

Create a new compositor for tiles of the given dimensions.

pub fn composite(&self, layers: &mut [Layer]) -> Vec<Rgba>

Composite layers in ascending z_order order.

Invisible layers are skipped. Each layer’s per-pixel alpha is multiplied by layer.opacity before blending.

pub fn to_rgba_bytes(pixels: &[Rgba]) -> Vec<u8>

Convert a pixel slice to interleaved RGBA bytes (4 bytes per pixel).

pub fn to_rgb_bytes(pixels: &[Rgba]) -> Vec<u8>

Convert a pixel slice to interleaved RGB bytes (3 bytes per pixel), discarding the alpha channel.

pub fn stats(pixels: &[Rgba]) -> CompositeStats

Compute per-channel statistics on a composited pixel slice.