[Paraview] Converting selections

[Rafael March]

Hi,

I'm programming a plugin which writes in a file the ids of the current selected cells in the vtkUnstructuredGrid displayed in ParaView. In my code I write something like this:

pqSelectionManager* selMan = (pqSelectionManager*)(pqApplicationCore::instance()->manager("SelectionManager"));

pqOutputPort* port = selMan->getSelectedPort();
    
vtkSMSourceProxy* activeSelection=port->getSelectionInput();

and get the property "IDs", just like the pqExtractSelectionsPanel class does. Of course, if the user made a selection by Frustum or Threshold, I should get the properties "Frustum" or "Thresholds" respectively, but they wouldn't "store" the cell id's, but some other information. I'm wondering if there is a way to convert a selection from frustum and/or threshold (or any other type) to a selection by IDs, that is: getting the IDs of the cells from a Frustum selection. I've been looking at classes vtkSelectionConverter and vtkPConvertSelection, but couldn't figure out a way of doing this. How can it be made ?

Thanks for any help,
Rafael March. 



      
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