CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

OK after checking with the original author, it is expected for coloring 
in medit.

If you do not want those duplicated triangles, you can do:

CGAL::Mesh_3::output_to_medit<C3T3, true, false>(ostream, c3t3);

Sebastien.

On 12/12/2018 05:17 PM, Dr01TSPC wrote:
> Sebastien:
>
> My goal is to generate tet meshes from input surface meshes (tris).
> (Actually
> my first goal is to use CGAL to clean up the surface meshes, before volume
> meshing, but baby steps.)
>
> ~~~~~~~~~~~~~~~~
> Review of the steps I took:
>
> After installing 4.13, I went to examples/Mesh_3; then executed cmake .,
> make.
>
> I then executed ./mesh_polyhedral_domain[_sm], which use(s) elephant.off by
> default.
>
> I view the out files - out_1.mesh (say) using either gedit or just less.
>
> The Triangles are all listed twice. In the same node order.
>
> (I made no changes or selections.)
>
> For elephant.off input:
> out_1.mesh has 760 Vertices, 3032 Triangles, and 1948 Tetrahedra.
> out_2.mesh has 1916 Vertices, 4816 Triangles, and 7507 Tetrahedra.
>
>  From those numbers, I would have thought the triangles are the surface
> facets.
> I have written code that removes the duplicate triangles, in order to view
> the
> elephant (say) after removing the tets.
>
> I have run mesh_polyhedral_domain[_sm] on my own input surface meshes, and
> obtained the same results - double listing of triangles.
>
> Regards,
> Tim
>
>
>
>
> --
> Sent from: http://cgal-discuss.949826.n4.nabble.com/