CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

On 10/27/2014 10:14 AM, Adam Getchell wrote:
> Thanks Sebastien,
>
> Since I am looking for the most accurate possible triangulations, and 
> calculations that don’t crash or compute incorrect results (after, possibly, 
> months of runtime), should I use Homogenous_d?
>
> Is mpz_class an appropriate substitute for leda_integer under these 
> conditions, or should I go obtain LEDA?
>
> I also looked at using the Epick_d kernel, but it does not appear to be 
> present in CGAL 4.4.

Epick_d is the one you should use. Robust and fast.

If you can't you can try using 
CGAL::Cartesian_d<CGAL::Lazy_exact_nt<CGAL::Gmpq> >


Sebastien.

> Adam Getchell
> about.me/adamgetchell
>
> > On Oct 23, 2014, at 5:03 AM, Sebastien Loriot (GeometryFactory) 
> > <>
> >  wrote:
> >
> > On 10/23/2014 09:28 AM, Adam Getchell wrote:
> > > Hello all,
> > >
> > > Is there an equivalent of CGAL::Triangulation_vertex_base_with_info_3 for 
> > > Delaunay_d?
> > >
> > >  From looking over the documentation, it appears that unlike 
> > > Delaunay_triangulation_3 which is built on a Triangulation_vertex_base_3, 
> > > Delaunay_d seems to be built on the Convex_hull_d?
> > >
> > > Where would be the best place to insert such data? I have, for example, 
> > > written a Delaunay : public Delaunay_d which includes member functions such 
> > > as number_of_cells() which are available in Delaunay_triangulation_3 but not 
> > > implemented in Delaunay_d.
> > >
> > > Suggestions most appreciated.
> > >
> > > Adam Getchell
> > > about.me/adamgetchell
> > I just looked at the code and there is no elegant way to do it
> > (using a template parameter).
> > What you could try is create a traits class inheriting from the
> > recommended one and it might be sufficient to define a new Point_d
> > class with your info inheriting from traits::Point_d.
> >
> > Just a guess I haven't try whether it works.
> >
> > Sebastien.
> >
> > --
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