Method _addStrokeLineForPoly

src/common/mapping/WebMapV2.js:2664–2672

* @private * @function WebMapViewModel.prototype._addStrokeLineForPoly * @description 添加面的边框。 * @param {Object} style - mabgl style

({ style, source, layerID, parentLayerId, visible, minzoom, maxzoom })

     * @param {Object} style - mabgl style
     */
    _addStrokeLineForPoly({ style, source, layerID, parentLayerId, visible, minzoom, maxzoom }) {
      const lineStyle = {
        style: this._transformStyleToMapBoxGl(style, 'LINE'),
        layout: {
          visibility: visible
        }
      };
      this._addOverlayToMap({ type: 'LINE', source, layerID, parentLayerId, layerStyle: lineStyle, minzoom, maxzoom });
    }

    _getThemeField(layerInfo) {
      if (layerInfo.layerType === 'VECTOR') {