[vtkusers] Occlusion

[Engel Markus]

Hi!

 

I'm currently looking for a possibility to check whether a certain
triangle of my vtkPolyData is visible or occluded by another PolyData.

 

I'm writing a program that eliminates triangles of the PolyData,
representing the patients skin, that are not visible from the barycenter
of a tumor, 

because they are occluded by other organs. All organs, the tumor and the
skin are vtkPolyDatas.

So I basically need to check if there is an Object, in this case a
PolyData, between a point and a tringle.

 

As the program is going to be based on VTK, I'm searching for a native
VTK solution. 

I already stumbled upon  the OpenGL  occlusion_query, however I afraid
it won't be easy to integrate this into the existing rendering-pipeline.
That's another reason for looking for some VTK-stuff.

 

Thanks a lot!

 

Markus

 

 

 

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