CGAL users discussion list

[Monique Teillaud <>]

Lauri Lehtovaara wrote:
> Hello everybody,
>
> I just downloaded CGAL and made few tests and it seems very promising. 
> However, I ran to a small, probably quite simple, problem.

Dear Lauri,

> Background: I'm trying to build my own 3d mesh generator (for FEM based 
> electronic structure calculations) on top of CGAL. My earlier code uses 
> TETGEN, but it's too slow as I have to insert one point at time when 
> refinining the mesh. (And I prefer using CGAL for other reasons as 
> well.)

> I wrote a simple test using Delaunay_d<Cartesian_d<double> >, and 
> everything worked out fine.

You mention 3d mesh generator above. Do you need dimension higher than 3?

> Problem: Now, I would like to inherit a vertex class and store some 
> information for the mesh generator (e.g. position of the closest atom). 
> My question is, what is the proper way to do this? (And should I inherit 
> vertex class or maybe some other class.)

If you need dimension 3 only, you can use CGAL::Delaunay_triangulation_3.

The user manual of the 3D triangulations chapter (chapter 31 in the 
manual of CGAL 3.4) explains you several ways to change the vertex class 
to add additional information.

Best regards,
    Monique Teillaud

PS: could you please disable the behavior in your mailer that sends 
answers to you only, instead of to the whole list? Answers may be useful 
to all subscribers. thanks.