[Insight-users] Problem with drawing a concave polygonal cell

[itkvtk123 at gmx.net]

I'm having exactly the same problem here.
The display of concave polygonal spatial objects is really messed up.
(it looks strange and flickers as you zoom / rotate / etc. sometimes it does even disappear)

The vtkTriangleFilter-trick works for the flickering issue, but I don't like the solution since it is only a workaround.
In addition to that, you see the difference in wireframe-mode (the spatial which went through the filter has many subdivisions).

Is there another solution for this problem? Or is it a bug?
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