[vtk-developers] vtkExtractSelectedIds + GLOBALIDS + vtkPolyData

[John Platt]

Hi,

 

I was looking for a filter in version 5.2 to extract cells from either
vtkPolyData or vtkUnstructuredGrid where the ouput type is kept the same
as the input type.

 

I tried vtkExtractSelectedIds for a vtkSelection with content type set
to GLOBALIDS. I could only get this to work if the GLOBALIDS were
vtkIdTypeArray. In vtkExtractSelectedIds::ExtractCells(), GetGlobalIds()
are cast to vtkIdTypeArray with no cast on GetPedigreeIds(). I wonder
whether this is the right way around.

 

My question is, will this filter cope with vtkPolyData, processing the
verts, lines, polys & strips in this order to preserve the cell data?

 

Many thanks,

 

John.

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