CGAL users discussion list

[Qianqian Fang <>]

On 03/21/2011 01:56 PM, Laurent Rineau (GeometryFactory) wrote:

I tried the example CGAL-3.8-beta1/examples/Mesh_3/mesh_polyhedral_domain.cpp on your file, with a small change to the criteria (facet_size=4, facet_distance=0.04, cell_size=4), and it produced a mesh of 23196 vertices.

You were right, the reordered surface works fine with
CGAL 3.8beta. My previous test was done with a binary
compiled against CGAL 3.6.1.

What source code do you use? I checkouted from the SVN of iso2mesh but you do not provide the source code of cgalmesh.exe.

the source code of the modified 3d mesher and polyhedral mesher
are provided in a top-level folder as iso2mesh, here is the path:

https://orbit.nmr.mgh.harvard.edu/plugins/scmsvn/viewcvs.php/trunk/cgalmesh/?root=iso2mesh

inside the CGAL folder, I also have a few units modified
for RNG seeding and other minor tweaks. I will regenerate all
CGAL binaries for iso2mesh with 3.8beta. Thanks for the
great works from the CGAL team for developing these
powerful tools.


Just go back to the CGAL vs tetgen comparison, does
CGAL polyhedral domain mesher provides a way to seed
(or label) a compartment (region) or a hole in the resulting
tetrahedral mesh? see the format in tetgen
http://tetgen.berlios.de/fformats.poly.html

If my input surface have multiple partitions (a subregion of surface),
can CGAL polyhedon mesher label and return the refined surfaces
after the meshing with consistent partition IDs ?

If these features are possible in CGAL, then I think it is
probably a good time to set CGAL tools as default in
iso2mesh, as tetgen is not strictly speaking open-source.

Qianqian

--

Laurent Rineau, PhD

R&D Engineer at GeometryFactory http://www.geometryfactory.com/

Release Manager of the CGAL Project http://www.cgal.org/