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// Copyright (c) 1999 Utrecht University (The Netherlands),
// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
// 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; version 2.1 of the License.
// See the file LICENSE.LGPL distributed with CGAL.
//
// 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: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.2-branch/Kernel_23/include/CGAL/Direction_3.h $
// $Id: Direction_3.h 28567 2006-02-16 14:30:13Z lsaboret $
//
//
// Author(s) : Andreas Fabri, Stefan Schirra
#ifndef CGAL_DIRECTION_3_H
#define CGAL_DIRECTION_3_H
CGAL_BEGIN_NAMESPACE
template <class R_>
class Direction_3 : public R_::Kernel_base::Direction_3
{
typedef typename R_::RT RT;
typedef typename R_::Vector_3 Vector_3;
typedef typename R_::Line_3 Line_3;
typedef typename R_::Ray_3 Ray_3;
typedef typename R_::Segment_3 Segment_3;
typedef typename R_::Kernel_base::Direction_3 RDirection_3;
public:
typedef R_ R;
Direction_3() {}
Direction_3(const RDirection_3& d)
: RDirection_3(d) {}
Direction_3(const Vector_3& v)
: RDirection_3(v) {}
Direction_3(const Line_3& l)
: RDirection_3(l) {}
Direction_3(const Ray_3& r)
: RDirection_3(r) {}
Direction_3(const Segment_3& s)
: RDirection_3(s) {}
Direction_3(const RT& hx, const RT& hy, const RT& hz)
: RDirection_3(hx, hy, hz) {}
};
#ifndef CGAL_NO_OSTREAM_INSERT_DIRECTION_3
template < class R >
std::ostream& operator<<(std::ostream& os, const Direction_3<R>& d)
{
typedef typename R::Kernel_base::Direction_3 RDirection_3;
return os << static_cast<const RDirection_3&>(d); }
#endif // CGAL_NO_OSTREAM_INSERT_DIRECTION_3
#ifndef CGAL_NO_ISTREAM_EXTRACT_DIRECTION_3
template < class R >
std::istream& operator>>(std::istream& is, Direction_3<R>& p)
{
typedef typename R::Kernel_base::Direction_3 RDirection_3;
return is >> static_cast<RDirection_3&>(p); }
#endif // CGAL_NO_ISTREAM_EXTRACT_DIRECTION_3
CGAL_END_NAMESPACE
#endif // CGAL_DIRECTION_3_H
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