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// Copyright (c) 1997 INRIA Sophia-Antipolis (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you may redistribute it under
// the terms of the Q Public License version 1.0.
// See the file LICENSE.QPL 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/Triangulation_2/include/CGAL/Triangulation_euclidean_traits_yz_3.h $
// $Id: Triangulation_euclidean_traits_yz_3.h 28567 2006-02-16 14:30:13Z lsaboret $
//
//
// Author(s) : Mariette Yvinec
#ifndef CGAL_TRIANGULATION_EUCLIDEAN_TRAITS_YZ_3_H
#define CGAL_TRIANGULATION_EUCLIDEAN_TRAITS_YZ_3_H
#include <CGAL/Triangulation_short_names_2.h>
#include <CGAL/triangulation_assertions.h>
#include <CGAL/Point_3.h>
#include <CGAL/Segment_3.h>
#include <CGAL/Triangle_3.h>
#include <CGAL/predicates/kernel_ftC2.h>
CGAL_BEGIN_NAMESPACE
template <class R>
class Orientation_yz_3
{
public:
typedef typename R::Point_3 Point;
typename R::FT x(const Point &p) const { return p.y(); }
typename R::FT y(const Point &p) const { return p.z(); }
CGAL::Orientation operator()(const Point& p,
const Point& q,
const Point& r)
{
return orientationC2(x(p), y(p), x(q), y(q), x(r), y(r));
}
};
template <class R>
class Side_of_oriented_circle_yz_3
{
public:
typedef typename R::Point_3 Point;
typename R::FT x(const Point &p) const { return p.y(); }
typename R::FT y(const Point &p) const { return p.z(); }
CGAL::Oriented_side operator() (const Point &p,
const Point &q,
const Point &r,
const Point &s)
{
return side_of_oriented_circleC2(x(p), y(p),
x(q), y(q),
x(r), y(r),
x(s), y(s));
}
};
template < class R >
class Triangulation_euclidean_traits_yz_3 {
public:
typedef Triangulation_euclidean_traits_yz_3<R> Traits;
typedef R Rp;
typedef typename Rp::Point_3 Point_2;
typedef typename Rp::Segment_3 Segment_2;
typedef typename Rp::Triangle_3 Triangle_2;
typedef typename Rp::Compare_y_3 Compare_x_2;
typedef typename Rp::Compare_z_3 Compare_y_2;
typedef Orientation_yz_3<Rp> Orientation_2;
typedef Side_of_oriented_circle_yz_3<Rp> Side_of_oriented_circle_2;
typedef typename Rp::Construct_segment_3 Construct_segment_2;
typedef typename Rp::Construct_triangle_3 Construct_triangle_2;
// for compatibility with previous versions
typedef Point_2 Point;
typedef Segment_2 Segment;
typedef Triangle_2 Triangle;
Triangulation_euclidean_traits_yz_3(){}
Triangulation_euclidean_traits_yz_3(
const Triangulation_euclidean_traits_yz_3& ){}
Triangulation_euclidean_traits_yz_3 &operator=(
const Triangulation_euclidean_traits_yz_3& ){return *this;}
typename Rp::FT x(const Point_2 &p) const { return p.y(); }
typename Rp::FT y(const Point_2 &p) const { return p.z(); }
Compare_x_2
compare_x_2_object() const
{ return Compare_x_2();}
Compare_y_2
compare_y_2_object() const
{ return Compare_y_2();}
Orientation_2
orientation_2_object() const
{ return Orientation_2();}
Side_of_oriented_circle_2
side_of_oriented_circle_2_object() const
{return Side_of_oriented_circle_2();}
Construct_segment_2 construct_segment_2_object() const
{return Construct_segment_2();}
Construct_triangle_2 construct_triangle_2_object() const
{return Construct_triangle_2();}
};
CGAL_END_NAMESPACE
#endif // CGAL_TRIANGULATION_EUCLIDEAN_TRAITS_YZ_3_H
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