CGAL users discussion list

[Martin Baeker <>]

Hi,

cannot really answer your question within CGAL, but be aware that the
mesh you create will not conform exactly to the polyhedron you start
with (i.e., nodes of the polyhedral mesh will not necessarily be nodes
of the 3D mesh - there is smoothing going on)

I have used both tetgen and netgen (you convert to off-files or
stl-files and mesh these structures).

Martin.

> Hello,
> No response, I hope this is not a stupid question !!!
> So I try to semplify:
> Why is the best way to obtain from a polyhedral domain a 3D mesh with almost
> constant cell volume, and to be able to control in input that volume?
>
> I would be very happy to have some tips, or indication of paper thesis
> whatever!
>
> Thanks,
> Benjamin
>
>
>
>
> 2010/5/25 N2a 
> <>
>
> > Hello,
> >
> > I'm trying to generate a 3D mesh with cells of almost constant volume. I
> > obtain a correct result for a cube, meshing with the criteria given in the
> > manual Facet_ criteria (25,0.15,0.05) and Cell criteria (4,0.2) , and after
> > optimizing it with Lloyd algorithm.
> > I try to understand what is the best way to have a almost volume constant
> > tetrahedric mesh and if it is possible to set a criteria or a mathematical
> > relation between the criteria in order to control as a target the volume of
> > the cell.
> > My polyhedral domain will be quite complicated, like the internal part of a
> > ship hull.
> > I have some good results now but I would really like to have a generic
> > process that is able to generate the mesh whatever is the domain given only
> > in input the volume as a target.
> >
> > I hope someone has a good strategy helping me to achieve this goal,
> > computation time is not a big problem.
> >
> > Thanks in advance,
> > Benjamin
> >
> > --
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> > Sent from the cgal-discuss mailing list archive at Nabble.com.
> >
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                   Priv.-Doz. Dr. Martin Bäker
                   Institut für Werkstoffe
                   Technische Universität Braunschweig
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