// ======================================================================
//
// Copyright (c) 1999 The CGAL Consortium
//
// This software and related documentation is part of an INTERNAL release
// of the Computational Geometry Algorithms Library (CGAL). It is not
// intended for general use.
//
// ----------------------------------------------------------------------
// 
// release       : 
// release_date  : 
// 
// file          : Point_3.h
// package       : _3
// revision      : $Revision$
// revision_date : $Date$
// author(s)     : Andreas Fabri, Stefan Schirra
//
// coordinator   : MPI, Saarbruecken
// ======================================================================

#ifndef CGAL_POINT_3_H
#define CGAL_POINT_3_H

CGAL_BEGIN_NAMESPACE

class Origin;

template <class R_>
class Point_3 : public R_::Kernel_base::Point_3
{
  typedef typename R_::RT                    RT;
  typedef typename R_::Vector_3              Vector_3;
  typedef typename R_::Kernel_base::Point_3  RPoint_3;
public:
  typedef          R_                       R;

  Point_3()
  {}

  Point_3(const Origin& o)
      : RPoint_3(o) {}

  Point_3(const CGAL::Point_3<R>& p)
      : RPoint_3( static_cast<const RPoint_3&>(p) ) {}

  Point_3(const RPoint_3& p)
      : RPoint_3(p) {}

  Point_3(const RT& hx, const RT& hy, const RT& hz)
    : RPoint_3(hx, hy, hz) {}

  Point_3(const RT& hx, const RT& hy, const RT& hz, const RT& hw)
    : RPoint_3(hx, hy, hz, hw) {}
};

template <class R>
inline
bool
operator==(const Origin& o, const Point_3<R>& p)
{ return p == o; }

template <class R>
inline
bool
operator!=(const Origin& o, const Point_3<R>& p)
{ return p != o; }

#ifndef CGAL_NO_OSTREAM_INSERT_POINT_3
template < class R >
std::ostream&
operator<<(std::ostream& os, const Point_3<R>& p)
{
  typedef typename  R::Kernel_base::Point_3  RPoint_3;
  return os << static_cast<const RPoint_3&>(p);
}
#endif // CGAL_NO_OSTREAM_INSERT_POINT_3

#ifndef CGAL_NO_ISTREAM_EXTRACT_POINT_3
template < class R >
std::istream& operator>>(std::istream& is, Point_3<R>& p)
{
  typedef typename  R::Kernel_base::Point_3  RPoint_3;
  return is >> static_cast<RPoint_3&>(p);
}
#endif // CGAL_NO_ISTREAM_EXTRACT_POINT_3

CGAL_END_NAMESPACE

#endif // CGAL_POINT_3_H