Geometry

new Geometry()

THREE equivalent: THREE.BufferGeometry

Vertex data store. Holds named attributes (position, normal, uv, color) plus an optional triangle index. Per-vertex color is first-class alongside positions and UVs.

Differs from THREE.js

No GPU buffers exist. setPositions/setNormals/setUVs/setColors are convenience wrappers over setAttribute.

Properties

Name	Type	Description
id	number	Auto-incrementing unique identifier.
name	string	Optional display name.
attributes	Map<string, Attribute>	Named vertex attribute map (read-only).
index	Uint16Array|Uint32Array|undefined	Triangle index list (read-only).
boundingBox	Box3|undefined	Computed bounding box. Not set automatically.
boundingSphere	Sphere|undefined	Computed bounding sphere. Set by computeBoundingSphere().

Methods

Method	Description
setPositions(array: Float32Array | number[]): this	Sets the position attribute from a flat XYZ array.
setNormals(array: Float32Array | number[]): this	Sets the normal attribute from a flat XYZ array.
setUVs(array: Float32Array | number[]): this	Sets the uv attribute from a flat UV array.
setColors(array: Float32Array | number[]): this	Sets the per-vertex color attribute from a flat RGB array (0–1 range).
setIndex(array: Uint16Array | Uint32Array | number[]): this	Sets the triangle index list. Automatically chooses Uint16Array or Uint32Array.
getAttribute(name: string): Attribute|undefined	Returns a named attribute, or undefined if not present.
setAttribute(name: string, attribute: Attribute): this	Adds or replaces a named attribute.
deleteAttribute(name: string): boolean	Removes a named attribute. Returns true if it existed.
computeVertexNormals(): this	Computes flat per-vertex normals from the position attribute using cross products.
computeBoundingSphere(): this	Computes a minimal bounding sphere from the position attribute and stores it in boundingSphere.
dispose(): void	Clears all attributes and the index, freeing memory.