// Copyright (c) 2014
// INRIA Saclay-Ile de France (France)
//
// This file is part of CGAL (www.cgal.org)
//
// $URL: https://github.com/CGAL/cgal/blob/v5.6.1/NewKernel_d/include/CGAL/NewKernel_d/Types/Line.h $
// $Id: Line.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
// Author(s)     : Marc Glisse

#ifndef CGAL_KERNELD_TYPES_LINE_H
#define CGAL_KERNELD_TYPES_LINE_H
#include <utility>
#include <CGAL/NewKernel_d/functor_tags.h>
#include <CGAL/Kernel/mpl.h>
namespace CGAL {
template <class R_> class Line {
        typedef typename Get_type<R_, FT_tag>::type FT_;
        typedef typename Get_type<R_, Point_tag>::type        Point_;
        typedef std::pair<Point_,Point_> Data_;
        Data_ data;
        public:
        Line(){}
        Line(Point_ const&a, Point_ const&b): data(a,b) {}
        Point_ point(int i)const{
          if(i==0) return data.first;
          if(i==1) return data.second;
          throw "not implemented";
        }
        Line opposite()const{
                return Line(data.second,data.first);
        }
};
namespace CartesianDKernelFunctors {
  template <class R_> struct Construct_line : Store_kernel<R_> {
    CGAL_FUNCTOR_INIT_STORE(Construct_line)
    typedef typename Get_type<R_, Line_tag>::type        result_type;
    typedef typename Get_type<R_, Point_tag>::type        Point;
    typedef typename Get_type<R_, Vector_tag>::type        Vector;
    typedef typename Get_functor<R_, Translated_point_tag>::type Tp_;
    //typedef typename Get_functor<R_, Difference_of_points_tag>::type Dp_;
    //typedef typename Get_functor<R_, Scaled_vector_tag>::type Sv_;
    result_type operator()(Point const&a, Point const&b)const{
      return result_type(a,b);
    }
    result_type operator()(Point const&a, typename First_if_different<Vector,Point>::Type const&b)const{
      Tp_ tp(this->kernel());
      return result_type(a,tp(a,b));
    }
  };
}
CGAL_KD_DEFAULT_TYPE(Line_tag,(CGAL::Line<K>),(Point_tag),());
CGAL_KD_DEFAULT_FUNCTOR(Construct_ttag<Line_tag>,(CartesianDKernelFunctors::Construct_line<K>),(Line_tag,Point_tag,Vector_tag),(Translated_point_tag));

} // namespace CGAL

#endif // CGAL_KERNELD_TYPES_LINE_H

