cgal/Circular_kernel_3/include/CGAL/Circular_arc_3.h

// Copyright (c) 2005  INRIA Sophia-Antipolis (France) 
// All rights reserved.
//
// Authors : Monique Teillaud <Monique.Teillaud@sophia.inria.fr>
//           Sylvain Pion     <Sylvain.Pion@sophia.inria.fr>
//           Julien Hazebrouck
//           Damien Leroy
// 
// Partially supported by the IST Programme of the EU as a Shared-cost
// RTD (FET Open) Project under Contract No  IST-2000-26473 
// (ECG - Effective Computational Geometry for Curves and Surfaces) 
// and a STREP (FET Open) Project under Contract No  IST-006413 
// (ACS -- Algorithms for Complex Shapes)

#ifndef CGAL_CIRCULAR_ARC_3_H
#define CGAL_CIRCULAR_ARC_3_H

namespace CGAL {
  template <class SK> 
    class Circular_arc_3
    : public SK::Kernel_base::Circular_arc_3
  {
    
    typedef typename SK::RT                          RT;
    typedef typename SK::FT                          FT;
    typedef typename SK::Line_3                      Line_3;
    typedef typename SK::Point_3                     Point_3;
    typedef typename SK::Plane_3                     Plane_3;
    typedef typename SK::Circle_3                    Circle_3;
    typedef typename SK::Sphere_3                    Sphere_3;
    typedef typename SK::Segment_3                   Segment_3;
    typedef typename SK::Circular_arc_point_3        Circular_arc_point_3;
    typedef typename SK::Kernel_base::Circular_arc_3 RCircular_arc_3; 
   
  
  public:
    typedef  RCircular_arc_3 Rep;
    typedef  SK   R; 
    
    const Rep& rep() const
      {
	return *this;
      }
    
    Rep& rep()
      {
	return *this;
      }
    
    Circular_arc_3()
      : RCircular_arc_3(typename R::Construct_circular_arc_3()())
      {}

    Circular_arc_3(const Circle_3& c, 
               const Circular_arc_point_3& s, 
               const Circular_arc_point_3& t)
      : RCircular_arc_3(typename R::Construct_circular_arc_3()(c,s,t))
      {}

    Circular_arc_3(const Circle_3& c, 
               const Point_3& s, 
               const Circular_arc_point_3& t)
      : RCircular_arc_3(typename R::Construct_circular_arc_3()(c,s,t))
      {}

    Circular_arc_3(const Circle_3& c, 
               const Circular_arc_point_3& s, 
               const Point_3& t)
      : RCircular_arc_3(typename R::Construct_circular_arc_3()(c,s,t))
      {}

    Circular_arc_3(const Circle_3& c, 
               const Point_3& s, 
               const Point_3& t)
      : RCircular_arc_3(typename R::Construct_circular_arc_3()(c,s,t))
      {}

    Circular_arc_3(const Circle_3& c)
      : RCircular_arc_3(typename R::Construct_circular_arc_3()(c))
      {}

    Circular_arc_3(const Circle_3 &c, 
                   const Sphere_3 &s1, bool less_xyz_s1,
                   const Sphere_3 &s2, bool less_xyz_s2) 
      : RCircular_arc_3(typename R::Construct_circular_arc_3()(c,s1,less_xyz_s1,
                                                                 s2,less_xyz_s2))
      {}

    Circular_arc_3(const Sphere_3 &s1, bool less_xyz_s1,
                   const Sphere_3 &s2, bool less_xyz_s2,
                   const Circle_3 &c) 
      : RCircular_arc_3(typename R::Construct_circular_arc_3()(s1,less_xyz_s1,
                                                               s2,less_xyz_s2,
                                                               c))
      {}

    Circular_arc_3(const Circle_3 &c, 
                   const Plane_3 &p1, bool less_xyz_p1,
                   const Plane_3 &p2, bool less_xyz_p2) 
      : RCircular_arc_3(typename R::Construct_circular_arc_3()(c,p1,less_xyz_p1,
                                                                 p2,less_xyz_p2))
      {}

    Circular_arc_3(const Plane_3 &p1, bool less_xyz_p1,
                   const Plane_3 &p2, bool less_xyz_p2,
                   const Circle_3 &c) 
      : RCircular_arc_3(typename R::Construct_circular_arc_3()(p1,less_xyz_p1,
                                                               p2,less_xyz_p2,
                                                               c))
      {}

    Circular_arc_3(const RCircular_arc_3 &a)
     : RCircular_arc_3(a)
      {}

    typename Qualified_result_of
    <typename R::Construct_circular_source_vertex_3,Circular_arc_3>::type
    source() const
    {
      return typename R::Construct_circular_source_vertex_3()(*this);
    }

    typename Qualified_result_of
    <typename R::Construct_circular_target_vertex_3,Circular_arc_3>::type
    target() const
    {
      return typename R::Construct_circular_target_vertex_3()(*this);
    }

    typename Qualified_result_of
    <typename R::Construct_supporting_circle_3,Circular_arc_3>::type
    supporting_circle() const
    {
      return typename R::Construct_supporting_circle_3()(*this);
    }

    Sphere_3 diametral_sphere() const
    {
      return typename R::Construct_diametral_sphere_3()(*this);
    }

    Point_3 center() const
    {
      return typename R::Construct_diametral_sphere_3()(*this).center();
    }

    FT squared_radius() const
    {
      return typename R::Construct_diametral_sphere_3()(*this).squared_radius();
    }

    Plane_3 supporting_plane() const
    {
      return typename R::Construct_supporting_plane_3()(*this);
    }

    Bbox_3 bbox() const
    { return typename R::Construct_bbox_3()(*this); }

  };

template < typename SK >
inline
bool
operator==(const Circular_arc_3<SK> &p,
           const Circular_arc_3<SK> &q)
{
  return SK().equal_3_object()(p, q);
}

template < typename SK >
inline
bool
operator!=(const Circular_arc_3<SK> &p,
           const Circular_arc_3<SK> &q)
{
  return ! (p == q);
}



}

#endif