CGAL users discussion list

[Peter Hachenberger <>]

There is no funtion Nef_polyhedron_3::is_convex.
Where did you find that? No idea why the compiler just does not
tell you that the function does not exist.

Peter


On Fri, 2007-07-20 at 12:07 +0200, Zorg wrote:
> Hi,
> 
> I use the example given with CGAL-3.3
> "examples/Nef_3/point_set_operations.cpp",
> 
> with adding only one line before "return 0;", which line is
> "CGAL_assertion(Cube2.is_convex());"
> 
>  
> 
> Compilation fails with the following message:
> 
>  
> 
> g++  -Wall -frounding-math '-I/usr/local/include' -I/usr/include/Qt
> -g g++ -ggdb -I/usr/local/include/crystalspace -ggdb -c X2.cc -o X2.o
> -Wall -frounding-math -DCGAL_USE_CGAL_CORE
> 
> /usr/local/include/CGAL/Nef_3/Infimaximal_box.h: In static member
> function ‘static typename SNC_structure::Volume_handle
> CGAL::Infimaximal_box<CGAL::Boolean_tag<true>,
> 
> Kernel>::getNirvana(SNC_structure&) [with SNC_structure = const
> 
> CGAL::SNC_structure<CGAL::Extended_homogeneous<CGAL::Gmpz>,
> CGAL::SNC_items,
> 
> bool>, Kernel = CGAL::Extended_homogeneous<CGAL::Gmpz>]’:
> 
> /usr/local/include/CGAL/Nef_polyhedron_3.h:668:   instantiated from
> ‘bool
> 
> CGAL::Nef_polyhedron_3<K, I, Mk>::is_convex() const [with Kernel_ =
> CGAL::Extended_homogeneous<CGAL::Gmpz>, Items_ = CGAL::SNC_items,
> Mark_ = bool]’
> 
> X2.cc:32:   instantiated from here
> 
> /usr/local/include/CGAL/Nef_3/Infimaximal_box.h:362: erreur:
> conversion from
> ‘CGAL::CGALi::In_place_list_const_iterator<CGAL::SNC_in_place_list_volume<CGAL::SNC_items::Volume<CGAL::SNC_structure<CGAL::Extended_homogeneous<CGAL::Gmpz>,
> 
> CGAL::SNC_items, bool> > >,
> 
> std::allocator<CGAL::SNC_in_place_list_volume<CGAL::SNC_items::Volume<CGAL::SNC_structure<CGAL::Extended_homogeneous<CGAL::Gmpz>,
> 
> CGAL::SNC_items, bool> > > > >’ to non-scalar type
> ‘CGAL::CGALi::In_place_list_iterator<CGAL::SNC_in_place_list_volume<CGAL::SNC_items::Volume<CGAL::SNC_structure<CGAL::Extended_homogeneous<CGAL::Gmpz>,
> 
> CGAL::SNC_items, bool> > >,
> 
> std::allocator<CGAL::SNC_in_place_list_volume<CGAL::SNC_items::Volume<CGAL::SNC_structure<CGAL::Extended_homogeneous<CGAL::Gmpz>,
> 
> CGAL::SNC_items, bool> > > > >’ requested
> 
> make: *** [X2.o] Erreur 1
> 
>  
> 
> Is there any known issue with Nef_polyhedron_3.is_convex()?
> 
>  
> 
> CGAL is configured as this:
> 
>   ****************************************************************
> 
>   **                                                            **
> 
>   **                     Compiling CGAL 3.3                     **
> 
>   **                     ==================                     **
> 
>   **                                                            **
> 
>   ****************************************************************
> 
>  
> 
>   OS:                           i686_Linux-2.6
> 
>   COMPILER:                     GNU 4.1.2
> 
>   BOOST:                        supported (1.33.1)
> 
>   BOOST_PROGRAM_OPTIONS:        supported (1.33.1)
> 
>   BOOST_BIMAP:                  not supported
> 
>   X11:                          supported (11.0)
> 
>   GMP:                          supported (4.1.4)
> 
>   GMPXX:                        supported (4.1.4)
> 
>   MPFR:                         supported (2.2.1)
> 
>   ZLIB:                         supported (1.2.3)
> 
>   BLAS:                         not supported
> 
>   LAPACK:                       not supported
> 
>   ATLAS:                        not supported
> 
>   LEDA:                         not supported
> 
>   LEDAWIN:                      not supported
> 
>   OPENGL:                       supported (2.1)
> 
>   QT:                           supported (3.3.8)
> 
>   TAUCS:                        not supported
> 
>  
> 
>  
> 
> Thanks for help.
> 
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