text: // Copyright (c) 1999-2004  
  // 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)     : Stefan Schirra, Sylvain Pion
  
  #ifndef CGAL_HOMOGENEOUS_BASE_H
  #define CGAL_HOMOGENEOUS_BASE_H
  
  #include <CGAL/config.h>
  #include <CGAL/basic_classes.h>
  
  #include <CGAL/Kernel/global_functions.h>
  
  #include <CGAL/Homogeneous/Aff_transformationH2.h>
  #include <CGAL/Cartesian/Circle_2.h>
  
  //#include <CGAL/Cartesian/Direction_2.h>
  #include <CGAL/Homogeneous/DirectionH2.h>
  #include <CGAL/Homogeneous/Iso_rectangleH2.h>
  #include <CGAL/Homogeneous/LineH2.h>
  #include <CGAL/Homogeneous/PointH2.h>
  #include <CGAL/Homogeneous/Weighted_point_2.h>
  #include <CGAL/Cartesian/Ray_2.h>
  #include <CGAL/Cartesian/Segment_2.h>
  #include <CGAL/Cartesian/Triangle_2.h>
  #include <CGAL/Homogeneous/VectorH2.h>
  #include <CGAL/Homogeneous/Data_accessorH2.h>
  #include <CGAL/Homogeneous/ConicHPA2.h>
  
  #include <CGAL/Homogeneous/Aff_transformationH3.h>
  #include <CGAL/Homogeneous/DirectionH3.h>
  #include <CGAL/Homogeneous/Iso_cuboidH3.h>
  #include <CGAL/Cartesian/Line_3.h>
  #include <CGAL/Homogeneous/PlaneH3.h>
  #include <CGAL/Homogeneous/PointH3.h>
  #include <CGAL/Homogeneous/Weighted_point_3.h>
  #include <CGAL/Homogeneous/RayH3.h>
  #include <CGAL/Cartesian/Segment_3.h>
  #include <CGAL/Homogeneous/SphereH3.h>
  #include <CGAL/Cartesian/Tetrahedron_3.h>
  #include <CGAL/Cartesian/Triangle_3.h>
  #include <CGAL/Cartesian/Circle_3.h>
  #include <CGAL/Homogeneous/VectorH3.h>
  
  #include <CGAL/Homogeneous/basic_constructionsH2.h>
  #include <CGAL/Homogeneous/distance_predicatesH2.h>
  #include <CGAL/Homogeneous/predicates_on_directionsH2.h>
  #include <CGAL/Homogeneous/predicates_on_pointsH2.h>
  
  #include <CGAL/Homogeneous/basic_constructionsH3.h>
  #include <CGAL/Homogeneous/distance_predicatesH3.h>
  #include <CGAL/Homogeneous/predicates_on_pointsH3.h>
  #include <CGAL/Homogeneous/predicates_on_pointsH2.h>
  
  #include <CGAL/representation_tags.h>
  #include <CGAL/Homogeneous/function_objects.h>
  
  #include <CGAL/Kernel_d/Cartesian_const_iterator_d.h>
  
  namespace CGAL {
  
  template <typename RT_, typename FT_, typename K_ >
  struct Homogeneous_base
  {
      typedef K_                                      Kernel;
      typedef RT_                                     RT;
      typedef FT_                                     FT;
  
      typedef Homogeneous_tag                         Rep_tag;
      typedef Homogeneous_tag                         Kernel_tag;
  
      enum { Has_filtered_predicates = false };
      typedef Boolean_tag<Has_filtered_predicates> Has_filtered_predicates_tag;
  
      typedef CGAL::Object                            Object_2;
      typedef CGAL::Object                            Object_3;
  
      typedef typename Same_uncertainty_nt<bool, FT>::type
                                                      Boolean;
      typedef typename Same_uncertainty_nt<CGAL::Sign, FT>::type
                                                      Sign;
      typedef typename Same_uncertainty_nt<CGAL::Comparison_result, FT>::type
                                                      Comparison_result;
      typedef typename Same_uncertainty_nt<CGAL::Orientation, FT>::type
                                                      Orientation;
      typedef typename Same_uncertainty_nt<CGAL::Oriented_side, FT>::type
                                                      Oriented_side;
      typedef typename Same_uncertainty_nt<CGAL::Bounded_side, FT>::type
                                                      Bounded_side;
      typedef typename Same_uncertainty_nt<CGAL::Angle, FT>::type
                                                      Angle;
  
      template <typename T>
      struct Ambient_dimension {
        typedef typename T::Ambient_dimension type;
      };
  
      template <typename T>
      struct Feature_dimension {
        typedef typename T::Feature_dimension type;
      };
  
      typedef PointH2<Kernel>                         Point_2;
      typedef VectorH2<Kernel>                        Vector_2;
      typedef DirectionH2<Kernel>                     Direction_2;
      typedef SegmentC2<Kernel>                       Segment_2;
      typedef LineH2<Kernel>                          Line_2;
      typedef RayC2<Kernel>                           Ray_2;
      typedef CircleC2<Kernel>                        Circle_2;
      typedef TriangleC2<Kernel>                      Triangle_2;
      typedef Iso_rectangleH2<Kernel>                 Iso_rectangle_2;
      typedef Aff_transformationH2<Kernel>            Aff_transformation_2;
      typedef Weighted_pointH2<Kernel>                Weighted_point_2;
  
      typedef PointH3<Kernel>                         Point_3;
      typedef VectorH3<Kernel>                        Vector_3;
      typedef DirectionH3<Kernel>                     Direction_3;
      typedef SegmentC3<Kernel>                       Segment_3;
      typedef PlaneH3<Kernel>                         Plane_3;
      typedef LineC3<Kernel>                          Line_3;
      typedef RayH3<Kernel>                           Ray_3;
      typedef TriangleC3<Kernel>                      Triangle_3;
      typedef TetrahedronC3<Kernel>                   Tetrahedron_3;
      typedef Iso_cuboidH3<Kernel>                    Iso_cuboid_3;
      typedef SphereH3<Kernel>                        Sphere_3;
      typedef CircleC3<Kernel>                        Circle_3;
      typedef Aff_transformationH3<Kernel>            Aff_transformation_3;
      typedef Weighted_pointH3<Kernel>                Weighted_point_3;
  
      typedef Cartesian_const_iterator_d<typename cpp11::array<RT, 3>::const_iterator> Cartesian_const_iterator_2;
      typedef Cartesian_const_iterator_d<typename cpp11::array<RT, 4>::const_iterator> Cartesian_const_iterator_3;
  
      typedef FT_                                     Cartesian_coordinate_type;
      typedef const RT_&                              Homogeneous_coordinate_type;
      // Undocumented stuff.
      typedef Data_accessorH2<Kernel>                 Data_accessor_2;
      typedef ConicHPA2<Point_2, Data_accessor_2>     Conic_2; 
      // Functors types and access functions.
  #define CGAL_Kernel_pred(Y,Z) typedef HomogeneousKernelFunctors::Y<Kernel> Y; \
                                Y Z() const { return Y(); }
  #define CGAL_Kernel_cons(Y,Z) CGAL_Kernel_pred(Y,Z)
  
  #include <CGAL/Kernel/interface_macros.h>
  
  };
  
  } //namespace CGAL
  
  #endif // CGAL_HOMOGENEOUS_BASE_H
  