CGAL users discussion list

[Mariette Yvinec <>]

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