void ConvertToVoronoiRegions(ESRI.ArcGIS.Geodatabase.IFeatureClass pFeatureClass , ESRI.ArcGIS.Geodatabase.ITinFilter pFilter , ESRI.ArcGIS.Geometry.IPolygon pClippingPolygon , string indexFieldName , string tagFieldName)
http://blog.csdn.net/zhizhu8256/article/details/36645873