IBasicGeoprocessor 如何使线线相交得到交点，因为其默认返回的featureclass是polyline，
IBasicGeoprocessor pBasicGeo = new BasicGeoprocessorClass();
IFeatureClass outFeatureClass = pBasicGeo.Intersect(pInputFLClass as ITable, false, pOverLayer as ITable, false, 0.01, pOutPut);
pOutPut的shapetype已经设置成point