Arcgis engnie 为图形建立缓冲区

/// <summary>/// /// </summary>/// <param name="geometry">选中要素的Geometry</param>/// <param name="distance">设置缓冲区大小</param>/// <returns>创建好的缓冲区</returns>public static IGeometry CreateBuffer(IGeometry geometry, double distance){ITopologicalOperator pTopologicalOperator = geometry as ITopologicalOperator;IGeometry buffer = pTopologicalOperator.Buffer(distance);return buffer;}