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Not quite sure what I’m doing wrong here. I’m trying to load the cross and cube .off examples bundled with the Polyhedron demo to a command line app. In brief:

 

typedef CGAL::Gmpz  NT;

typedef CGAL::Homogeneous<NT>  Kernel;

typedef CGAL::Polyhedron_3<Kernel>  Polyhedron;

typedef CGAL::Nef_polyhedron_3<Kernel> Nef_polyhedron;

 

Polyhedron P1;

std::ifstream in1(argv[2]);

// check good etc

In1 >> P1;

// verbose mode shows gmpz complaining about construction from non-integer double value

Nef_polyhedron N1(P1);

// throws an exception

 

CGAL error: assertion violation!

_expression_ : pe_prev->is_border() || !internal::Plane_constructor<Plane>::get_pl

ane(pe_prev->facet(),pe_prev->facet()->plane()).is_degenerate()

File       : U:\pkg\cgal\include\CGAL/Nef_3/polyhedron_3_to_nef_3.h

Line       : 251

 

Question: Is the assertion the end result of the double -> integer conversion? If so how does one load .off file with double values? The polyhedron_demo_off_plugin appears to do exactly the same thing without any problems.

 

Many thanks.