[vtkusers] face culling and edge visibility

[Ken Martin]

Unfortunately wireframe backface culling is not implemented. But maybe
hidden line removal would do the job or maybe even better. See

https://blog.kitware.com/hidden-line-removal-now-available-in-vtk-and-paraview/



On Fri, Mar 24, 2017 at 8:14 PM, Miroslav Drahos <mdrahos at aurisrobotics.com>
wrote:

> Hi VTK folks,
>
> I am rendering a surface with culling faces on and edge visibility on as
> well. When I used VTK 6.2, only the edges of faces that were visible (i.e.
> not culled) were shown, with VTK 7.1.0 all edges are visible, even for
> faces that are culled. My VTK 6.2 was compiled with rendering backend
> OPENGL, and 7.1.0 with OPENGL2, which is what most likely causes the
> difference in behavior.
>
> It does not matter whether front or back face culling is used, the edge
> visibility behavior is the same.
>
>
> What I am hoping to hear: Is there a way to get the "old" behavior with
> VTK7.1/OPENGL2?
>
> I would like to show the edges only for the faces that are not culled
> away.
>
>
> Thank you tons,
>
> Miro
>
>
>
>
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-- 
Ken Martin PhD
Distinguished Engineer
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065

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