[vtkusers] Missing Normals in vtkPolyData after filtering through ProbeFilter

David Cole DLRdave at aol.com
Fri Apr 8 13:27:17 EDT 2016


The docs say PassPointArrays is Off by default. Have you tried turning it on?

http://www.vtk.org/doc/nightly/html/classvtkProbeFilter.html#ad5e5c5434053fe2678166795142c1a1a

Is the polydata you are asking for the normals the input to your
filter, or some other polydata? (It was unclear from your original
question.)


HTH,
David C.



On Fri, Apr 8, 2016 at 12:59 PM, Seun Odutola <seun at rogue-research.com> wrote:
> Hi Everyone,
>
>      I have a vtkPolyData created from a Mesh, the polydata has been
> assigned points, strips as well as normals. Then it’s passed through a
> vtkProbeFilter as the input data & the probe filter source connection is set
> as a vtkImageBlend output. The issue I have is when I try to access the
> resulting polydata’s Normals via polydata->GetPointData()->GetNormals() it
> always returns NULL. Somewhere down the line I believe the normals are being
> removed or ignored. Can someone point me in the right direction?
>
> Regards,
> Seun
>
>
>
>
>
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