I have a triangular mesh that is generated from an experimental
meshing algorithm. I am using ParaView to check the mesh for
consistency. I am trying to diagnose a potential problem that I just
can not understand how it is happening and I am not sure if there is a
problem in my code, the writing of the vtk file or in ParaView.
I have a triangle surface mesh where a few of the triangles are
not visible if you render by "Cull Backface" in the Display tab.
Usually this means the triangle winding is backwards so I ran the
"Normal Glyphs" filter and all the arrows are consistently pointing
the correct direction, even for the "missing" triangle. For better or
worse, I also use the T=2V-4 equation to try and figure out of the
surface is "water tight" which it should be and the equation validates
that. I don't really know what else to check? Selecting "CELLS" and
showing the CELL_DATA values for the cells shows a value floating on
the missing triangle so I am reasonably convince there is a triangle
there.
So why would the triangle disappear when I render with "Cull
Backface" but the normal for the triangle say that I should be looking
at the front face?
Ideas, suggestions and thoughts are welcome.
Thanks for any help.
___________________________________________________________
Mike Jackson www.bluequartz.net
Principal Software Engineer [email protected]
BlueQuartz Software Dayton, Ohio
_______________________________________________
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