hl-utils.js

/**
 * Highlight Generative Art Utilities Script : V0
 * @version: 0.0.1
 * @description The script exposes additional utilities.
 */

const hlUtils = (function () {
  function xmur3(str) {
    for (var i = 0, h = 1779033703 ^ str.length; i < str.length; i++)
      (h = Math.imul(h ^ str.charCodeAt(i), 3432918353)), (h = (h << 13) | (h >>> 19));
    return function () {
      (h = Math.imul(h ^ (h >>> 16), 2246822507)), (h = Math.imul(h ^ (h >>> 13), 3266489909));
      return (h ^= h >>> 16) >>> 0;
    };
  }

  function sfc32(a, b, c, d) {
    return function () {
      a |= 0;
      b |= 0;
      c |= 0;
      d |= 0;
      var t = (((a + b) | 0) + d) | 0;
      d = (d + 1) | 0;
      a = b ^ (b >>> 9);
      b = (c + (c << 3)) | 0;
      c = (c << 21) | (c >>> 11);
      c = (c + t) | 0;
      return (t >>> 0) / 4294967296;
    };
  }

  return {
    xmur3,
    sfc32,
    createRandomNumberGenerator: function (seed) {
      const xmur3Value = xmur3(seed);
      return sfc32(xmur3Value(), xmur3Value(), xmur3Value(), xmur3Value());
    },
    randomNumberFromSeed: function (seed) {
      return this.createRandomNumberGenerator(seed)();
    },
  };
})();

window.$hlUtils = hlUtils;