CGAL users discussion list

[Michel Audette <>]

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/
>
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>
>
>
>
>
> --
> Mariette Yvinec
> Geometrica project team
> INRIA  Sophia-Antipolis
>
>
>



-- 
Michel Audette, Ph.D.
R & D Engineer,
Kitware Inc.,
Chapel Hill, N.C.