CGAL users discussion list

["Max" <>]

Hello Peter

From what I get from your mail msg's, AFAIUC, there's
the following facts with relate to Nef_3:

1. To use half-space nef_3 ctor such as
        Nef_polyhedron_3 N(Plane_3(1, 0, 0, -1), Nef_polyhedron_3::INCLUDED);
one should use extended kernel;

2. Don't use inexact kernels with Nef_3;

3. To play with Nef_3 with double type coordinates, one should
use SNC_indexed_items as the 2nd template parameter in instantiating
a Nef_3 type;

4. Extended kernels do not work together with SNC_indexed_items.

It seems that there's no choice, of combinition of Nef_3/kernel, for me 
to meet these needs:

a) I need the half-space Nef_3 ctor; (that means I should used extended 
kernel)

b) my coordinates is double type; (that means I should use SNC_indexed_items, 
but it's
incompatible with extended kernel)

So this seems to be a deadlock. Is there any solution?

Many thanks for your help, Peter.

B/Rgds
Max