[vtkusers] Generate Mesh - Finite Element Analysis

[Dominik Szczerba]

You should add that to the wiki as it gets asked on and on.

Dominik

Bryn Lloyd wrote:
> Hi Paul,
> 
> Maybe you could try the vtkClipVolume filter. It will produce tetrahedra 
> (not just the surface).
> 
> http://www.vtk.org/doc/nightly/html/classvtkClipVolume.html
> 
> You might want to set Mixed3DCellGenerationOff() in order to avoid any 
> wedges in your output.
> The quality of the mesh at the surface will most likely not be very good.
> 
> 
> 
> As an alternative you could use the MarchinCubes filter. The output can 
> be smoothed etc in order to improve the triangle quality.
> Then run the vtkDelaunay3D filter on the output. This will only work if 
> your surface is convex!
> 
> 
> 
> The third alternative is the best, for simulation purposes:
> Generate the surface as you have so far. Run some smoothing filter on 
> the triangles in order to improve their quality.
> 
> Then run the constrained delaunay meshing program by Hang Si (TetGen, 
> http://tetgen.berlios.de/) to generate tetrahedra.
> (or any other mesh generation software you have access to, e.g. Netgen).
> 
> --Bryn
> 
> 
> 
> 
> On Jan 4, 2009, at 3:22 PM, Paul Jhin wrote:
> 
>> vtkMarchingCubes
> 
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-- 
Dominik Szczerba, PhD
Computational Physics Group
IT'IS Foundation
http://www.itis.ethz.ch