mdx-m3-viewer/src/common/seededrandom.js

A browser WebGL model viewer. Mainly focused on models of the games Warcraft 3 and Starcraft 2.

/**
 * Return a function that works in the same exact way as Math.random(), but with the given seed.
 * See http://indiegamr.com/generate-repeatable-random-numbers-in-js/
 *
 * @param {number} seed
 * @return {function}
 */
export default function seededRandom(seed) {
  return () => {
    seed = (seed * 9301 + 49297) % 233280;

    return seed / 233280;
  };
}