createGlyphField#getLocalBounds¶

Summary¶

createGlyphField#getLocalBounds returns explicit or computed object-space bounds. It computes lazily when retained positions and scales exist; otherwise it returns empty bounds marked partial when instances exist but CPU spatial data is unavailable. Treat the box fields as authoritative: the returned sphere is derived from that box rather than preserving an independently supplied sphere override.

Syntax¶

GlyphField.getLocalBounds(): Bounds3
const result = glyphField.getLocalBounds();

Parameters¶

This API does not take parameters.

Returns¶

Bounds3 - Bounds structure containing axis-aligned box and bounding-sphere data.

Type Details¶

Bounds3¶

type Bounds3 = {

    boxMin: Vec3;

    boxMax: Vec3;

    sphereCenter: Vec3;

    sphereRadius: number;

    empty: boolean;

    partial: boolean;

};

Bounds3 Fields¶

Name	Type	Required	Description
`boxMin`	`Vec3`	Yes	Minimum corner of the axis-aligned bounding box.
`boxMax`	`Vec3`	Yes	Maximum corner of the axis-aligned bounding box.
`sphereCenter`	`Vec3`	Yes	Center of the associated bounding sphere.
`sphereRadius`	`number`	Yes	Radius of the associated bounding sphere.
`empty`	`boolean`	Yes	Whether the bounds contain no geometry.
`partial`	`boolean`	Yes	Whether the result omits geometry whose bounds could not be determined.

Vec3¶

type Vec3 = [number, number, number];

Example¶

const canvas = document.querySelector("canvas");
const wgpu = await WasmGPU.create(canvas);

const glyphField = wgpu.createGlyphField({ instanceCount: 1, positions: new Float32Array([0, 0, 0, 0]), rotations: new Float32Array([0, 0, 0, 1]), scales: new Float32Array([1, 1, 1, 0]), attributes: new Float32Array([0.5, 0, 0, 0]), scaleTransform: { mode: "linear", domainMin: 0, domainMax: 1 } });
const result = glyphField.getLocalBounds();
console.log(result);