Method createVectorLayer

src/openlayers/mapping/WebMap.js:3394–3416

* @private * @function WebMap.prototype.createVectorLayer * @description 创建vector图层 * @param {Object} layerInfo - 图层信息 * @param {Array} features -feature的集合 * @returns {ol.layer.Vector} 矢量图层

(layerInfo, features)

   * @returns {ol.layer.Vector} 矢量图层
   */
  async createVectorLayer(layerInfo, features) {
    const { featureType, style } = layerInfo;
    let newStyle;
    if (featureType === 'LINE' && Util.isArray(style) && style.length === 2) {
      const [outlineStyle, strokeStyle] = style;
      newStyle =
        !strokeStyle.lineDash || strokeStyle.lineDash === 'solid'
          ? StyleUtils.getRoadPath(strokeStyle, outlineStyle)
          : StyleUtils.getPathway(strokeStyle, outlineStyle);
    } else {
      if (Util.isArray(style)) {
        layerInfo.style = style[0];
      }
      newStyle = await StyleUtils.toOpenLayersStyle(layerInfo.style, layerInfo.featureType);
    }
    return new olLayer.Vector({
      style: newStyle,
      source: new Vector({
        features: layerInfo.filterCondition ? this.getFiterFeatures(layerInfo.filterCondition, features) : features,
        wrapX: false
      })
    });
  }

  /**
   * @private