amos-tool/lib/math/randomColor.js

amos ui tool

"use strict";

module.exports = {
  randomHexColor: function() {
    return (~~(Math.random() * (1 << 24))).toString(16);
  },
  randomRgbColor: function() {
    return "rgb(" + this._random(255) + "," + this._random(255) + "," + this._random(255) + ")";
  },
  randomRgbaColor: function(r) {
    var o = r || this._randomAlpha();
    return "rgba(" + this._random(255) + "," + this._random(255) + "," + this._random(255) + "," + o + ")";
  },
  _randomAlpha: function() {
    return parseFloat(Math.random().toFixed(2));
  },
  _random: function(r) {
    return Math.floor(Math.random() * r + 1);
  },
  randomHexColorStr: function() {
    return "#" + Math.random().toString(16).substring(2).substr(0, 6);
  },
  randomHexAlphaColorStr: function() {
    var r = Math.round(255 * this._randomAlpha()).toString(16);
    return this.randomHexColorStr() + r;
  }
};