Method getWmtsInfo

src/openlayers/mapping/WebMap.js:1663–1773

* @private * @function WebMap.prototype.getWmtsInfo * @description 获取wmts的图层参数。 * @param {Object} layerInfo - 图层信息。 * @param {function} callback - 获得wmts图层参数执行的回调函数

(layerInfo, callback)

   * @param {function} callback - 获得wmts图层参数执行的回调函数
   */
  getWmtsInfo(layerInfo, callback) {
    let that = this;
    let options = {
      withCredentials: that.isCredentail(layerInfo.url, layerInfo.proxy), 
      withoutFormatSuffix: true
    };
    const isKvp = !layerInfo.requestEncoding || layerInfo.requestEncoding === 'KVP';
    return FetchRequest.get(that.getWMTSUrl(layerInfo.url, isKvp, layerInfo.proxy), null, options)
      .then(function (response) {
        return response.text();
      })
      .then(function (capabilitiesText) {
        const parser = new XMLParser({
          attributeNamePrefix: '',
          ignoreAttributes: false,
          removeNSPrefix: true,
          isArray: (name, jpath) => {
            return WMTS_ARRAY_NODE_PATHS.includes(jpath);
          }
        });
        const capabilities = parser.parse(capabilitiesText).Capabilities;
        if (that.isValidResponse(capabilities)) {
          let content = capabilities.Contents;
          let tileMatrixSet = content.TileMatrixSet,
            layers = content.Layer,
            layer,
            idx,
            layerFormat,
            style = 'default';

          for (let n = 0; n < layers.length; n++) {
            if (layers[n].Identifier === layerInfo.layer) {
              idx = n;
              layer = layers[idx];
              layerFormat = layer.Format[0];
              var WGS84BoundingBox = layer.WGS84BoundingBox;
              var boundingBox = layer.BoundingBox;
              let bbox = WGS84BoundingBox ? WGS84BoundingBox : boundingBox;
              var layerBounds = that.getBoundsFromConrner(bbox.LowerCorner, bbox.UpperCorner)
              // tileMatrixSetLink = layer.TileMatrixSetLink;
              break;
            }
          }
          layer &&
            layer.Style &&
            layer.Style.forEach((value) => {
              if (value.isDefault) {
                style = value.Identifier;
              }
            });
          let scales = [],
            matrixIds = [];
          for (let i = 0; i < tileMatrixSet.length; i++) {
            if (tileMatrixSet[i].Identifier === layerInfo.tileMatrixSet) {
              let wmtsLayerEpsg = `EPSG:${tileMatrixSet[i].SupportedCRS.split('::')[1]}`;
              for (let h = 0; h < tileMatrixSet[i].TileMatrix.length; h++) {
                scales.push(tileMatrixSet[i].TileMatrix[h].ScaleDenominator);
                matrixIds.push(tileMatrixSet[i].TileMatrix[h].Identifier);