Geometry.getMorphBaseChannel¶

Summary¶

Geometry.getMorphBaseChannel returns active base positions, normals, or RGBA colors for morph processing. Wasm-backed channels are refreshed and copied before return.

Syntax¶

Geometry.getMorphBaseChannel(channel: "positions" | "normals" | "colors"): Float32Array

Parameters¶

Name	Type	Required	Description
`channel`	`"positions" \\| "normals" \\| "colors"`	Yes	Base vertex channel to retrieve.

Returns¶

Float32Array - Active base-channel data for the current vertexCount.

Type Details¶

Positions and normals contain three f32 components per vertex; colors contain four RGBA components. A Wasm-backed source is refreshed, range-validated, and copied. A sufficiently large CPU channel is returned as an active-range subarray. Missing normals default to [0, 1, 0] per vertex, missing colors default to white, and missing positions throw.

Example¶

const geometry = wgpu.geometry.custom({
  positions: new Float32Array([0, 0, 0, 1, 0, 0, 0, 1, 0]),
});

const basePositions = geometry.getMorphBaseChannel("positions");
const baseNormals = geometry.getMorphBaseChannel("normals");
console.log(basePositions.length, baseNormals.length); // 9 9

Notes¶

Positions are required. Missing normals and colors return generated fallback arrays. CPU-backed results may be active subarray views; do not assume ownership of their backing buffer.