+bool HYDROData_Image::HasReferences() const
+{
+ Handle(HYDROData_Image) aRefImage = GetTrsfReferenceImage();
+ int aNbReferences = NbReferences();
+
+ return !aRefImage.IsNull() || aNbReferences > 0;
+}
+
+void HYDROData_Image::RemoveAllReferences()
+{
+ if ( !HasReferences() )
+ return;
+
+ Handle(HYDROData_Image) aRefImage = GetTrsfReferenceImage();
+ if ( !aRefImage.IsNull() )
+ {
+ RemoveTrsfReferenceImage();
+ }
+ else
+ {
+ ClearReferences();
+ SetOperatorName( "" );
+ SetArgs( "" );
+ SetIsSelfSplitted( false );
+ }
+
+ SetToUpdate( false );
+
+ bool anIsByTwoPoints = IsByTwoPoints();
+
+ QImage anImage = Image();
+ if ( anImage.isNull() )
+ return;
+
+ // Set local points to default position
+ QPoint aLocalPointA = QPoint( 0, 0 );
+ QPoint aLocalPointB = QPoint( anImage.width(), 0 );
+ QPoint aLocalPointC = anIsByTwoPoints ? QPoint( INT_MIN, INT_MIN ) : QPoint( 0, anImage.height() );
+
+ SetLocalPoints( aLocalPointA, aLocalPointB, aLocalPointC, false );
+
+ // Calculate global points
+ QTransform aTransform = Trsf();
+
+ QPointF aTrsfPointA = QPointF( aTransform.map( aLocalPointA ) );
+ QPointF aTrsfPointB = QPointF( aTransform.map( aLocalPointB ) );
+ QPointF aTrsfPointC = anIsByTwoPoints ? QPointF( INT_MIN, INT_MIN ) :
+ QPointF( aTransform.map( aLocalPointC ) );
+
+ SetGlobalPoints( ManualCartesian, aTrsfPointA, aTrsfPointB, aTrsfPointC );
+}
+