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[deeFisher <>]

I am trying to carry out a nef polyhedron Boolean with the below code but it
cant even carry out the first line… it does nothing. I left it running over
night.

Nef_Polyhedron NP1(P);
Nef_Polyhedron NP2(P2);
Nef_Polyhedron o_NP = NP1 - NP2;


The polyhedron is created using the Polyhedron_incremental_builder_3<HDS>.
The ‘begin_surface()’ function uses a std::vector<double> to receive the
coordinates.


I am using the below type defs:

typedef CGAL::Exact_predicates_exact_constructions_kernel Kernel; 
typedef CGAL::Polyhedron_3<Kernel>         Polyhedron;
typedef CGAL::Nef_polyhedron_3<Kernel> Nef_Polyhedron;
typedef Polyhedron::HalfedgeDS             HalfedgeDS;


I’ve also used a wide range of other kernels but they also don’t work:

// typedef CGAL::Homogeneous<CGAL::Gmpz>  Kernel;   
// typedef CGAL::Homogeneous<CGAL::Gmpz>  Kernel;  
// typedef CGAL::Simple_cartesian<double>     Kernel;       
// typedef CGAL::Simple_cartesian<CGAL::Gmpq> Kernel; 
// typedef CGAL::Homogeneous<CGAL::Exact_integer>  Kernel;  
// typedef CGAL::Polyhedron_3<Kernel, CGAL::Polyhedron_items_3 >
PolyhedralSurface;

Whats odd is that on the polyhedron both isClose() and isValid() functions
say false however if I export my polyhedrons as .off before attempting to
convert to nef_polyhedron they come out as single shell closed meshes with
nothing wrong with them at all.

Thanks in advance for any help



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