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<p class=MsoNormal><span lang=EN-US>Hi!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I’m currently looking for a
possibility to check whether a certain triangle of my vtkPolyData is visible or
occluded by another PolyData.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>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, <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>because they are occluded by other organs.
All organs, the tumor and the skin are vtkPolyDatas.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>So I basically need to check if there is an
Object, in this case a PolyData, between a point and a tringle.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>As the program is going to be based on VTK,
I’m searching for a native VTK solution. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>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.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks a lot!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Markus<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
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