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// Copyright (c) 2000
// 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) : Geert-Jan Giezeman
#ifndef CGAL_POINT_2_RAY_2_INTERSECTION_H
#define CGAL_POINT_2_RAY_2_INTERSECTION_H
#include <CGAL/Ray_2.h>
#include <CGAL/Point_2.h>
#include <CGAL/Intersection_traits_2.h>
namespace CGAL {
namespace internal {
template <class K>
inline
bool
do_intersect(const typename K::Point_2 &pt,
const typename K::Ray_2 &ray,
const K&)
{
return ray.has_on(pt);
}
template <class K>
inline
bool
do_intersect(const typename K::Ray_2 &ray,
const typename K::Point_2 &pt,
const K&)
{
return ray.has_on(pt);
}
template <class K>
typename CGAL::Intersection_traits
<K, typename K::Point_2, typename K::Ray_2>::result_type
intersection(const typename K::Point_2 &pt,
const typename K::Ray_2 &ray,
const K& k)
{
if (do_intersect(pt,ray, k)) {
return intersection_return<typename K::Intersect_2, typename K::Point_2, typename K::Ray_2>(pt);
}
return intersection_return<typename K::Intersect_2, typename K::Point_2, typename K::Ray_2>();
}
template <class K>
typename CGAL::Intersection_traits
<K, typename K::Ray_2, typename K::Point_2>::result_type
intersection(const typename K::Ray_2 &ray,
const typename K::Point_2 &pt,
const K& k)
{
return internal::intersection(pt, ray, k);
}
} // namespace internal
CGAL_INTERSECTION_FUNCTION(Point_2, Ray_2, 2)
CGAL_DO_INTERSECT_FUNCTION(Point_2, Ray_2, 2)
} //namespace CGAL
#endif
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