[vtkusers] New filter class: vtkPolyDataToUnstructuredGridFilter

[Jérôme]

Hi,
I feel surprised about the conversion from PolyData to UnstructuredGrid
posts: I didn't see them!

I have a quite fast solution, I don't know it is suitable for you:
just pass your polydata in a vtkThreshold, with thresholds being set
to actual min and max values of any of your data array. If you don't
have any array, just add a vtkGenerateIndexArray before the threshold

note: you can easily check this pipeline with paraview:
Sphere Source -> Generate Point Ids -> Threshold

HTH
Jerome

2010/3/19 Oliver Rudolph <oliver.rudolph at iisb.fraunhofer.de>

> Hi folks!
>
> There had been several postings on conversion from vtkPolyData to
> vtkUnstructuredGrid in the past with no really accessible solutions
> except the global statement "write a filter on your own".
>
> Now, I was confronted with doing quite the same conversion and found a
> rather quick solution doing some 3D delaunization. Although this is not
> yet stable in all situations there are, "normal" input as I had been
> confronted with up to know, worked well.
>
> Maybe you have suggestions for improvement or other approaches to this
> problem. So far, please find attached the source files, maybe you'll
> want to add them to the vtk codebase (which would make me a little proud :)
>
>
> Best regards,
> Oliver
>
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