CGAL users discussion list

[Bertrand Pellenard <>]

On 03/01/2012 02:17 PM, Sebastien Loriot (GeometryFactory) wrote:
> Read that:
> http://www.cgal.org/FAQ.html#inexact_NT
>
> and try again with CGAL::Simple_cartesian<CGAL::Gmpq> for example
> (Exact_predicates_exact_constructions_kernel for a more efficient one).
>
> Sebastien.
>
> On 03/01/2012 02:15 PM, Bertrand Pellenard wrote:
> > On 03/01/2012 02:11 PM, Sebastien Loriot (GeometryFactory) wrote:
> > > Which Kernel are you using?
> > >
> > > Sebastien.
> > >
> > > On 03/01/2012 02:04 PM, Bertrand Pellenard wrote:
> > > > Hello,
> > > >
> > > > i used functions to_2d and to_2d functions of CGAL::Plane_3.
> > > >
> > > > if the object plane have Vector_3 of orthogonal_direction equals to 
> > > > i, j
> > > > or k, the result of to_2d is not relevant:
> > > >
> > > > in my experiments:
> > > > the normal of the plane is the vector : 4.71019e-19 -1 8.02098e-20
> > > >
> > > > Points to convert in 2d:
> > > > p1 : 1.63532 -0.766137 0.493543
> > > > p2 : 1.23422 -0.766137 1.18164
> > > > p3 : 0.303906 -0.766137 1.6816
> > > >
> > > >
> > > > Returned values:
> > > > -1.62655e+18 0.493543
> > > > -1.62655e+18 1.18164
> > > > -1.62655e+18 1.6816
> > > >
> > > >
> > > > Is someone have encountered this kind of bug ?
> > > >
> > > > Best regards.
> > > >
> > > > Bertrand Pellenard
> > I use CGAL::Simple_cartesian<double> Kernel.
great. it's fine with Exact_predicates_exact_constructions_kernel.
Thank you.