Handle(HYDROData_Region) aRefRegion = Handle(HYDROData_Region)::DownCast( aZone->GetFatherObject() );
if ( IsEqual( aRefRegion, theRegion ) )
aResAltitude = GetAltitudeForPoint( thePoint, aZone );
Handle(HYDROData_Region) aRefRegion = Handle(HYDROData_Region)::DownCast( aZone->GetFatherObject() );
if ( IsEqual( aRefRegion, theRegion ) )
aResAltitude = GetAltitudeForPoint( thePoint, aZone );