[vtkusers] VtkVolumeCollection is empty

[Edgar Andrasch]

Hello,
how can I use the VtkVolumeCollection to access the volumes of my VtkRenderer? My Collection is empty, but if I use the VisibleVolumeCount() function, it gives me the right count of volumes. I have also the same problem with the actorcollection.

k=rendererAct->VisibleVolumeCount(); 
			
vtkVolumeCollection * 	VolCol=vtkVolumeCollection::New();
			
VolCol=rendererAct->GetVolumes();

Thanks to all responses
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