aResult->AddPoint( 0, HYDROData_IPolyline::Point( Xmin, Ymax ) );
aResult->AddPoint( 0, HYDROData_IPolyline::Point( Xmax, Ymax ) );
aResult->AddPoint( 0, HYDROData_IPolyline::Point( Xmax, Ymin ) );
aResult->AddPoint( 0, HYDROData_IPolyline::Point( Xmin, Ymax ) );
aResult->AddPoint( 0, HYDROData_IPolyline::Point( Xmax, Ymax ) );
aResult->AddPoint( 0, HYDROData_IPolyline::Point( Xmax, Ymin ) );