'use strict';
(function() {
  var viewer;
  var url;
  var model;

  function load() {
    var req = new XMLHttpRequest();
    var isBinary = /[.]gz$/.test(url) || /[.]zip$/.test(url);
    req.overrideMimeType('text/plain; charset=x-user-defined');
    req.open('GET', url, true);
    if (isBinary)
      req.responseType = 'arraybuffer';

    req.onreadystatechange = function(event) {
      if (req.readyState !== 4)

ments)))}}),i.send=function(e,r,u){if(2===arguments.length&&"function"==typeof r&&(u=r,r=null),c.open(e,n,!0),null==t||"accept"in a||(a.accept=t+",*/*"),c.setRequestHeader)for(var l in a)c.setRequestHeader(l,a[l]);return null!=t&&c.overrideMimeType&&c.overrideMimeType(t),null!=s&&(c.responseType=s),null!=u&&i.on("error",u).on("load",function(n){u(null,n)}),o.beforesend.call(i,c),c.send(null==r?null:r),i},i.abort=function(){return c.abort(),i},Xo.rebind(i,o,"on"),null==r?i:i.get(kt(r))}function kt(n){return...