Method _hash

src/tools/texture-lab/renderer.js:1282–1285

(x, y, seed)

  }

  _hash(x, y, seed) {
    const n = Math.sin(x * 12.9898 + y * 78.233 + seed) * 43758.5453;
    return n - Math.floor(n);
  }

  _applyNoise(data, width, height, params, seed) {
    const intensity = params.intensity;