Method smooth

src/common/util/GeometryAnalysis.js:409–420

* @function GeometryAnalysis.prototype.smooth * @version 11.2.0 * @description 线要素光滑分析。 * @param {GeoJSONFeature} feature - 线要素。 * @param {number} [smoothness=2] - 有效范围为大于等于2，设置为小于2的值会抛出异常，光滑系数越大，线对象节点数越多，也就越光滑。 建议取值范围为[2,10]。 * @returns {GeoJSONFeature} 光滑处理后的线要素。

(feature, smoothness = 2)

   * @returns {GeoJSONFeature} 光滑处理后的线要素。
   */
  smooth(feature, smoothness = 2) {
    if (getType(feature) !== 'LineString') {
      throw new Error("only feature type is LineString supported");
    }

    const ugFeature = geojson2UGGeometry(feature);
    const result = this.module._UGCWasm_Geometrist_Smooth(ugFeature, smoothness);
    return {
      type: "Feature",
      geometry: ugGeometry2Geojson(result)
    };
  }

  /**
   * @function GeometryAnalysis.prototype.computeGeodesicDistance