@thi.ng/webgl/geo/quad.js

WebGL & GLSL abstraction layer

import { DrawMode } from "../api/model.js";
const defQuadModel = (opts = {}) => {
  let { size = 2, uv = true, center = true } = opts;
  size *= 0.5;
  const o = center ? 0 : size;
  return {
    attribs: {
      position: {
        data: new Float32Array([
          o - size,
          o - size,
          o + size,
          o - size,
          o - size,
          o + size,
          o + size,
          o + size
        ]),
        size: 2
      },
      ...uv ? {
        uv: {
          data: new Float32Array([0, 0, 1, 0, 0, 1, 1, 1]),
          size: 2
        }
      } : null
    },
    uniforms: {},
    shader: null,
    mode: DrawMode.TRIANGLE_STRIP,
    num: 4
  };
};
export {
  defQuadModel
};