bytev-charts/lib/plugin/three.js/examples/js/loaders/KMZLoader.js

基于echarts和JavaScript及ES6封装的一个可以直接调用的图表组件库，内置主题设计，简单快捷，且支持用户自定义配置； npm 安装方式: npm install bytev-charts 若启动提示还需额外install插件,则运行 npm install @babel/runtime-corejs2 即可;

import "core-js/modules/es.array.iterator.js";
import "core-js/modules/es.object.to-string.js";
import "core-js/modules/es.string.iterator.js";
import "core-js/modules/web.dom-collections.iterator.js";
import "core-js/modules/web.url.js";
import "core-js/modules/web.url-search-params.js";
import "core-js/modules/es.regexp.exec.js";
import "core-js/modules/es.string.split.js";
import _Object$assign from "@babel/runtime-corejs2/core-js/object/assign";
import _Object$create from "@babel/runtime-corejs2/core-js/object/create";
console.warn("THREE.KMZLoader: As part of the transition to ES6 Modules, the files in 'examples/js' were deprecated in May 2020 (r117) and will be deleted in December 2020 (r124). You can find more information about developing using ES6 Modules in https://threejs.org/docs/#manual/en/introduction/Installation.");

THREE.KMZLoader = function (manager) {
  THREE.Loader.call(this, manager);
};

THREE.KMZLoader.prototype = _Object$assign(_Object$create(THREE.Loader.prototype), {
  constructor: THREE.KMZLoader,
  load: function load(url, onLoad, onProgress, onError) {
    var scope = this;
    var loader = new THREE.FileLoader(scope.manager);
    loader.setPath(scope.path);
    loader.setResponseType('arraybuffer');
    loader.setRequestHeader(scope.requestHeader);
    loader.load(url, function (text) {
      try {
        onLoad(scope.parse(text));
      } catch (e) {
        if (onError) {
          onError(e);
        } else {
          console.error(e);
        }

        scope.manager.itemError(url);
      }
    }, onProgress, onError);
  },
  parse: function parse(data) {
    function findFile(url) {
      for (var path in zip.files) {
        if (path.substr(-url.length) === url) {
          return zip.files[path];
        }
      }
    }

    var manager = new THREE.LoadingManager();
    manager.setURLModifier(function (url) {
      var image = findFile(url);

      if (image) {
        console.log('Loading', url);
        var blob = new Blob([image.asArrayBuffer()], {
          type: 'application/octet-stream'
        });
        return URL.createObjectURL(blob);
      }

      return url;
    }); //

    var zip = new JSZip(data);

    if (zip.files['doc.kml']) {
      var xml = new DOMParser().parseFromString(zip.files['doc.kml'].asText(), 'application/xml');
      var model = xml.querySelector('Placemark Model Link href');

      if (model) {
        var loader = new THREE.ColladaLoader(manager);
        return loader.parse(zip.files[model.textContent].asText());
      }
    } else {
      console.warn('KMZLoader: Missing doc.kml file.');

      for (var path in zip.files) {
        var extension = path.split('.').pop().toLowerCase();

        if (extension === 'dae') {
          var loader = new THREE.ColladaLoader(manager);
          return loader.parse(zip.files[path].asText());
        }
      }
    }

    console.error('KMZLoader: Couldn\'t find .dae file.');
    return {
      scene: new THREE.Group()
    };
  }
});