CGAL users discussion list

[Michel Audette <>]

Hi Mariette,

I would be keen to find out if you implement this functionality. I
cannot use your tetrahedralization for my application if it is not
faithful to the input surface mesh.

Thanks for your continued support.

Best wishes,

Michel

On Sat, Dec 11, 2010 at 3:06 AM, Mariette Yvinec
<>
 wrote:
>
>  I use medit to visualize the meshes.
> medit read the .mesh files
>
> Currently, there is no way to prevent the surface boundary mesh
> to be modified.
>
> Regads,
> Mariette
>
> ----- Mail original -----
>> De: "Michel Audette" 
>> <>
>> À: 
>> 
>> Envoyé: Vendredi 10 Décembre 2010 22:34:26
>> Objet: Re: [cgal-discuss] is it possible to make make_mesh_3 indicate % 
>> completion?
>> Dear developers,
>>
>> Mariette, your suggestion seems to have worked. I have a result in a
>> matter of seconds. Can you tell me if there is a converter for the
>> .mesh format to something like .vtk ? Equivalently, what do CGAL folks
>> use to visualize tetrahedral meshes?
>>
>> Moreover, is there a way of ensuring that the tetrahedralization keeps
>> the surface triangle boundary faithfully? Although I have not
>> visualized the result yet, the tet count makes it seem unlikely that
>> the boundary was preserved.
>>
>> Best wishes,
>>
>> Michel
>>
>> On Fri, Dec 10, 2010 at 4:23 PM, Michel Audette
>> <>
>>  wrote:
>> > Hi Mariette,
>> >
>> > thanks for your kind reply. I'll try it your way. Do the other
>> > parameters appear reasonable?
>> >
>> > Best wishes,
>> >
>> > Michel
>> >
>> > On Fri, Dec 10, 2010 at 4:14 PM, Mariette Yvinec
>> > <>
>> >  wrote:
>> >> your facet angle is too high. It is suppose to be
>> >> a lower bound for the minimum angle of each facet.
>> >> A reasonable value is between 20 and 30 degree.
>> >>
>> >> Michel Audette wrote:
>> >>
>> >> Thanks, Laurent.
>> >>
>> >> Seems to work. I'm trying to run the mesh creation with criteria as
>> >> follows... I'm seeing a high number of tetrahedra though... Higher
>> >> than I'm expecting.
>> >>
>> >> I want high-quality elements of roughly 10mm edges, to begin with.
>> >> (I
>> >> would like 20mm later on if I can).
>> >>
>> >> Does something like this look reasonable? High facet angle, say 45
>> >> deg. Facet distance a=10mm. Is the facet size root(3)/4 x a^3
>> >> (=43.3),
>> >> and the cell size root(2)/12 x a^3 (=117.9)?
>> >>
>> >> Mesh_criteria criteria(facet_angle=45, facet_size=43,
>> >> facet_distance=10.0,
>> >>                          cell_radius_edge=10.0, cell_size=118);
>> >>
>> >> Does that make sense, or not necessarily. I seem to be getting more
>> >> tets "to refine" than I expect.
>> >>
>> >> Michel
>> >>
>> >> On Fri, Dec 10, 2010 at 1:49 PM, Laurent Rineau (GeometryFactory)
>> >> <>
>> >>  wrote:
>> >>
>> >>
>> >> Le vendredi 10 décembre 2010 19:26:28, Michel Audette a écrit :
>> >>
>> >>
>> >> Dear CGAL developers,
>> >>
>> >> I'm launching an example based on the code in
>> >> examples/Mesh_3/mesh_polyhedral_domain.cpp
>> >>
>> >> but for the parameters that I gave, it seems to take a long time,
>> >> and
>> >> provides no indication on the percent completion.
>> >>
>> >> Can the interface be tweaked to make it more verbose?
>> >> examples/Mesh_3/mesh_polyhedral_domain.cpp
>> >>
>> >>
>> >> Define the macro CGAL_MESH_3_VERBOSE to 1. It will not give you the
>> >> percent
>> >> of
>> >> completion, because the number of vertices at the end of the
>> >> meshing process
>> >> cannot be guessed, but it will show the size of the internal
>> >> priority
>> >> queues.
>> >>
>> >> --
>> >> Laurent Rineau, PhD
>> >> Release Manager of the CGAL Project http://www.cgal.org/
>> >> R&D Engineer at GeometryFactory http://www.geometryfactory.com/
>> >>
>> >> --
>> >> You are currently subscribed to cgal-discuss.
>> >> To unsubscribe or access the archives, go to
>> >> https://lists-sop.inria.fr/wws/info/cgal-discuss
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> --
>> >> Mariette Yvinec
>> >> Geometrica project team
>> >> INRIA Sophia-Antipolis
>> >>
>> >>
>> >>
>> >
>> >
>> >
>> > --
>> > Michel Audette, Ph.D.
>> > R & D Engineer,
>> > Kitware Inc.,
>> > Chapel Hill, N.C.
>> >
>>
>>
>>
>> --
>> Michel Audette, Ph.D.
>> R & D Engineer,
>> Kitware Inc.,
>> Chapel Hill, N.C.
>>
>> --
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>
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-- 
Michel Audette, Ph.D.
R & D Engineer,
Kitware Inc.,
Chapel Hill, N.C.