CGAL users discussion list

[Bruce Duncan <>]

Hi Sebastien,

The problem is creating it. 

Although if I could figure out how to output an arbitrary 
(non-tetrahedralised) 
mesh in CGNS, that would suffice for the moment.

Bruce

On Friday 06 May 2011 07:17:54 Sebastien Loriot (GeometryFactory) wrote:
> Hello,
> 
> I don't get if your problem is in outputting the mesh to your specific
> format or creating it.
> 
> S.
> 
> Bruce Duncan wrote:
> > Hi all,
> > 
> > I am writing a mesh generator with quite specific requirements. As a
> > result, I need to output a polyhedron in CGNS format.
> > 
> > I can do the CGNS output very easily if I have a set of tetrahedra. In
> > fact I have already implemented this to output a Triangulation_3.
> > 
> > At first I tried to use Triangulation_3 and it's siblings directly.
> > However, they don't take into account edges and my concave polyhedra are
> > destroyed in the process of triangulation. Is there a way around this?
> > 
> > Next, I turned to the Mesh_triangulation_3 class. This accepts a
> > Polyhedron and gives access to a Triangulation_3. Excellent! The problem
> > is that it does not respect the vertices and edges of the input
> > Polyhedron. My application really depends on having the vertices remain
> > in the same place. Other vertices and edges may be added, however. Is
> > there a way to achieve this?
> > 
> > I have tried to use the Polyhedral_mesh_domain_with_features_3 class but
> > without much success... I may post a test case about that next week.
> > 
> > Let me know if images or code would help clarify what I'm trying to do.
> > 
> > Thanks,
> > Bruce
> > 
> > 
> > ------------------------------------------------------------------------
> > 
> > The University of Edinburgh is a charitable body, registered in
> > Scotland, with registration number SC005336.

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The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.