@openhps/core/dist/esm/three/nodes/procedural/Checker.js

Open Hybrid Positioning System - Core component

import { uv } from '../accessors/UV.js';
import { Fn } from '../tsl/TSLBase.js';

/**
 * Creates a 2x2 checkerboard pattern that can be used as procedural texture data.
 *
 * @tsl
 * @function
 * @param {Node<vec2>} coord - The uv coordinates.
 * @return {Node<float>} The result data.
 */
export const checker = /*@__PURE__*/Fn(([coord = uv()]) => {
  const uv = coord.mul(2.0);
  const cx = uv.x.floor();
  const cy = uv.y.floor();
  const result = cx.add(cy).mod(2.0);
  return result.sign();
});