[vtkusers] Create an actual mesh from a set of "connected" triangles

David Doria daviddoria at gmail.com
Mon Mar 23 17:45:22 EDT 2009


Thanks much! How did you figure that out?? I can easily remove duplicate
points and triangles in my code.

What do you mean by tetgen?

Also, with the FillHoles filter, is there a way to select points and add
geometry (triangles) to make them connected? I have a model :

That has large voids that I would like to fill in. I tried for months to do
this automatically, but I've given up and would like to , for instance,
select points around the window and say "fill this in with triangles". Is
anything like that possible?



On Mon, Mar 23, 2009 at 5:34 PM, Bryn Lloyd <blloyd at vision.ee.ethz.ch>wrote:

> Hi David,
> Your dolphin mesh contains two triangles that share all three vertices (at
> the end of the top fin).
> If you select these two triangles in paraview, invert the selection, and
> extract it, then finally call the fill holes filter, the mesh seems to be
> OK.
> I tested the result for following things:
> Compatibility test: Passed
> Point coincidence test: Passed
> Duplicate tris test: Passed
> Additionally, meshing it using tetgen and extracting the surface returns
> the identical surface.
> Here you can get it/test it.
> http://www.vision.ee.ethz.ch/blloyd/dolphin_fixed.vtk
> bye
> Bryn
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