97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
// 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)
|
|
//
|
|
// $URL: https://github.com/CGAL/cgal/blob/v5.1/Cartesian_kernel/include/CGAL/Cartesian/Direction_2.h $
|
|
// $Id: Direction_2.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
|
|
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
|
|
//
|
|
//
|
|
// Author(s) : Andreas Fabri, Herve Bronnimann
|
|
|
|
#ifndef CGAL_CARTESIAN_DIRECTION_2_H
|
|
#define CGAL_CARTESIAN_DIRECTION_2_H
|
|
|
|
#include <CGAL/array.h>
|
|
#include <CGAL/Handle_for.h>
|
|
|
|
namespace CGAL {
|
|
|
|
template < class R_ >
|
|
class DirectionC2
|
|
{
|
|
typedef DirectionC2<R_> Self;
|
|
typedef typename R_::FT FT;
|
|
typedef FT RT;
|
|
typedef typename R_::Point_2 Point_2;
|
|
typedef typename R_::Vector_2 Vector_2;
|
|
typedef typename R_::Line_2 Line_2;
|
|
typedef typename R_::Ray_2 Ray_2;
|
|
typedef typename R_::Segment_2 Segment_2;
|
|
typedef typename R_::Direction_2 Direction_2;
|
|
|
|
typedef std::array<FT, 2> Rep;
|
|
typedef typename R_::template Handle<Rep>::type Base;
|
|
|
|
Base base;
|
|
|
|
public:
|
|
|
|
typedef R_ R;
|
|
|
|
DirectionC2() {}
|
|
|
|
DirectionC2(const FT &x, const FT &y)
|
|
: base(CGAL::make_array(x, y)) {}
|
|
|
|
bool operator==(const DirectionC2 &d) const;
|
|
bool operator!=(const DirectionC2 &d) const;
|
|
|
|
Vector_2 to_vector() const;
|
|
|
|
const RT & dx() const
|
|
{
|
|
return get_pointee_or_identity(base)[0];
|
|
}
|
|
const RT & dy() const
|
|
{
|
|
return get_pointee_or_identity(base)[1];
|
|
}
|
|
};
|
|
|
|
template < class R >
|
|
inline
|
|
bool
|
|
DirectionC2<R>::operator==(const DirectionC2<R> &d) const
|
|
{
|
|
if (CGAL::identical(base, d.base))
|
|
return true;
|
|
return equal_direction(*this, d);
|
|
}
|
|
|
|
template < class R >
|
|
inline
|
|
bool
|
|
DirectionC2<R>::operator!=(const DirectionC2<R> &d) const
|
|
{
|
|
return !( *this == d );
|
|
}
|
|
|
|
|
|
template < class R >
|
|
inline
|
|
typename DirectionC2<R>::Vector_2
|
|
DirectionC2<R>::to_vector() const
|
|
{
|
|
return Vector_2(dx(), dy());
|
|
}
|
|
|
|
} //namespace CGAL
|
|
|
|
#endif // CGAL_CARTESIAN_DIRECTION_2_H
|