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Ah. Wrong kernel perhaps …

 

typedef CGAL::Exact_predicates_exact_constructions_kernel Kernel;

 

From: [mailto:] On Behalf Of
Sent: 11 September 2013 10:20
To:
Subject: [cgal-discuss] Loading .off files into Polyhedrons via ifstream?

 

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.