WebRoot/admin/assets/vendor/skycons/js/skycons.js

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(function(global) {
  "use strict";

  /* Set up a RequestAnimationFrame shim so we can animate efficiently FOR
   * GREAT JUSTICE. */
  var requestInterval, cancelInterval;

  (function() {
    var raf = global.requestAnimationFrame       ||
              global.webkitRequestAnimationFrame ||
              global.mozRequestAnimationFrame    ||
              global.oRequestAnimationFrame      ||
              global.msRequestAnimationFrame     ,
        caf = global.cancelAnimationFrame        ||
              global.webkitCancelAnimationFrame  ||
              global.mozCancelAnimationFrame     ||
              global.oCancelAnimationFrame       ||
              global.msCancelAnimationFrame      ;

    if(raf && caf) {
      requestInterval = function(fn, delay) {
        var handle = {value: null};

        function loop() {
          handle.value = raf(loop);
          fn();
        }

        loop();
        return handle;
      };

      cancelInterval = function(handle) {
        caf(handle.value);
      };
    }

    else {
      requestInterval = setInterval;
      cancelInterval = clearInterval;
    }
  }());

  /* Catmull-rom spline stuffs. */
  /*
  function upsample(n, spline) {
    var polyline = [],
        len = spline.length,
        bx  = spline[0],
        by  = spline[1],
        cx  = spline[2],
        cy  = spline[3],
        dx  = spline[4],
        dy  = spline[5],
        i, j, ax, ay, px, qx, rx, sx, py, qy, ry, sy, t;

    for(i = 6; i !== spline.length; i += 2) {
      ax = bx;
      bx = cx;
      cx = dx;