[vtkusers] vtkTriangleFilter

[Michael Rice]

Can you use a vtkCleanPolyData filter to fix the degenerate facets  
before using the vtkTriangleFilter?

On Jan 16, 2007, at 5:47 PM, Amitesh Agarwal wrote:

> Hi all,
> I have been using vtkTriangleFilter to to triangulate  polygons of  
> complex shapes in 3D space to patch holes in unstructured grid. I  
> am repeatedly getting this message whenever the hole shape is complex.
>
> Warning: In /home/amitesh/binaries/VTK/Filtering/vtkPolygon.cxx,  
> line 562
> vtkPolygon (0x41d9d00): Degenerate polygon encountered during  
> triangulation
>
> In essence what it does it that the triangle filter breaks the  
> bolygon in two parts. This has been creating a lot of problems  
> because the triangulation, it seems, is not complete as the  
> vtkTriangleFilter only triangulates a portion of the hole and  
> leaves the rest as it is. Is there any way to get around it so that  
> I be able to create a valid triagulation on a polygon of any shape  
> in 3D space?
>
> Regards
>
> Amitesh
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