[vtkusers] self intersecting surface mesh

[oka]

Dear Bryn,

Thanks. 
vtkQuadricDecimation works very well.
I got a 3D volume mesh as I expected.

Best regards,

Oka

> 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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-- 
oka <oka at bpe.es.osaka-u.ac.jp>