Function hexToRgb

particles.js:1449–1462

(hex)

} )();

function hexToRgb(hex){
  // By Tim Down - http://stackoverflow.com/a/5624139/3493650
  // Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
  var shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
  hex = hex.replace(shorthandRegex, function(m, r, g, b) {
     return r + r + g + g + b + b;
  });
  var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
  return result ? {
      r: parseInt(result[1], 16),
      g: parseInt(result[2], 16),
      b: parseInt(result[3], 16)
  } : null;
};

function clamp(number, min, max) {
  return Math.min(Math.max(number, min), max);