Method createUniqueSource

src/openlayers/mapping/WebMap.js:3538–3549

* @private * @function WebMap.prototype.createUniqueSource * @description 创建单值图层的source * @param {Object} parameters- 图层信息 * @param {Array} features - feature 数组 * @returns {{map: *, style: *, isHoverAble: *, highlightStyle: *, themeField: *, styleGroups: Array}}

(parameters, features)

   * @returns {{map: *, style: *, isHoverAble: *, highlightStyle: *, themeField: *, styleGroups: Array}}
   */
  async createUniqueSource(parameters, features) {
    //找到合适的专题字段
    let styleGroup = await this.getUniqueStyleGroup(parameters, features);
    return {
      map: this.map, //必传参数 API居然不提示
      style: parameters.style,
      isHoverAble: parameters.isHoverAble,
      highlightStyle: parameters.highlightStyle,
      themeField: parameters.themeSetting.themeField,
      styleGroups: styleGroup
    };
  }

  /**
   * @private