geom-split-vertices

Creates a new geometry with unique vertices for each face. Useful for flat shading.

Installation

npm install geom-split-vertices

Usage

import splitVertices from "geom-split-vertices";
import { sphere } from "primitive-geometry";

const geometry = sphere();
const splitGeometry = splitVertices(geometry.positions, geometry.cells);
// => { positions: Float32Array(9216), cells: Uint32Array(3072) }

API

splitVertices(positions, cells): geometry

Parameters

• positions: TypedArray | Array | Array<[x, y, z]> – simplicial complex geometry positions (eg. new Float32Array([x, y, z, x, y, z, ...])/new Array(x, y, z, x, y, z, ...) or new Array([x, y, z], [x, y, z], ...))
• cells: TypedArray | Array | Array<[x, y, z]> – simplicial complex geometry cells (eg. new Uint32Array([a, b, c, a, b, c, ...])/new Array(a, b, c, a, b, c, ...) or new Array([a, b, c], [a, b, c], ...))

Returns

geometry: { positions: TypedArray|Array, cells: TypedArray|Array } - new geometry with unique vertex position for each cell / face.

Note: Other vertex attributes like normals and uvs are lost and need to be recomputed.

License

MIT. See license file.