// Copyright (c) 2000,2001,2002,2003  
// Utrecht University (The Netherlands),
// ETH Zurich (Switzerland),
// INRIA Sophia-Antipolis (France),
// Max-Planck-Institute Saarbruecken (Germany),
// and Tel-Aviv University (Israel).  All rights reserved. 
//
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 3 of the License,
// or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
// 
//
// Author(s)     : Herve Bronnimann, Sylvain Pion

#ifndef CGAL_CARTESIAN_H
#define CGAL_CARTESIAN_H

#include <CGAL/Cartesian/Cartesian_base.h>
#include <CGAL/Handle_for.h>
#include <CGAL/Kernel/Type_equality_wrapper.h>

namespace CGAL {

template < typename FT_, typename Kernel_ >
struct Cartesian_base_ref_count
  : public Cartesian_base< Kernel_, FT_ >
{
    typedef FT_                                           RT;
    typedef FT_                                           FT;

    // The mechanism that allows to specify reference-counting or not.
    template < typename T >
    struct Handle { typedef Handle_for<T>    type; };

    template < typename Kernel2 >
    struct Base { typedef Cartesian_base_ref_count<FT_, Kernel2>  Type; };

    // was in Cartesian_base
    typedef Kernel_ K;
#define CGAL_Kernel_pred(Y,Z) typedef CartesianKernelFunctors::Y<K> Y; \
                              Y Z() const { return Y(); }
#define CGAL_Kernel_cons(Y,Z) CGAL_Kernel_pred(Y,Z)

#include <CGAL/Kernel/interface_macros.h>
};

template < typename FT_ >
struct Cartesian
  : public Type_equality_wrapper<
                Cartesian_base_ref_count<FT_, Cartesian<FT_> >,
                Cartesian<FT_> >
{};

} //namespace CGAL

#endif // CGAL_CARTESIAN_H
