chuYinKouXian/localEarth/js/common/utils.js!eval

(function() { var __moduleName = "js/common/utils"; var __moduleAddress = "http://projects.delimited.io/webgl-globes/js/common/utils.js";System.register(["d3"], function (_export) {
  "use strict";

  var d3, getTween;

  // adapted from memoize.js by @philogb and @addyosmani

  _export("memoize", memoize);

  _export("debounce", debounce);

  function memoize(fn) {
    return function () {
      var args = Array.prototype.slice.call(arguments);

      var key = "",
          len = args.length,
          cur = null;

      while (len--) {
        cur = args[len];
        key += cur === Object(cur) ? JSON.stringify(cur) : cur;

        fn.memoize || (fn.memoize = {});
      }

      return key in fn.memoize ? fn.memoize[key] : fn.memoize[key] = fn.apply(this, args);
    };
  }

  function debounce(func, wait, immediate) {
    var timeout;
    return function () {
      var context = this,
          args = arguments;
      var later = function later() {
        timeout = null;
        if (!immediate) {
          func.apply(context, args);
        }
      };
      var callNow = immediate && !timeout;
      clearTimeout(timeout);
      timeout = setTimeout(later, wait);
      if (callNow) {
        func.apply(context, args);
      }
    };
  }

  return {
    setters: [function (_d3) {
      d3 = _d3["default"];
    }],
    execute: function () {
      getTween = function getTween(prop, to, time) {
        time = time || 500;
        var node = this;
        var curr = node[prop];
        var interpol = d3.interpolateObject(curr, to);
        return function (t) {
          node[prop].copy(interpol(t / time));
          if (t >= time) {
            return true;
          }
        };
      };

      _export("getTween", getTween);
    }
  };
});
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 }).call(__global);