[vtkusers] self intersecting surface mesh

[Bryn Lloyd]

Hi

First, I would recommend using vtkQuadricDecimation instead of vtkQuadricClustering. The latter changes topology.

If you still have intersections (something that none of the decimation algorithms in vtk guarantee to avoid) you could try to use a smaller reduction rate. This often helps.

If you can display the self-intersections, and have tools to interactively modify the mesh, you could also go along this path. Often there are only a few self-intersections (after vtkQuadricDecimation).

Good luck
Bryn




On Nov 13, 2011, at 7:53 AM, oka wrote:

> Dear users,
> 
> I extracted a surface shape from image data by
> MarchingCube method and made it to triangle
> surface mesh. It was decimated by vtkQuadricClustering.
> When volume mesh was tried to make by gmsh,
> It says Error: Self Intersecting surface mesh.
> Can I correct the mesh by vtk to get a volume mesh ?
> 
> Bet regards,
> 
> Oka
> -- 
> oka <oka at bpe.es.osaka-u.ac.jp>
> 
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