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// Copyright (c) 1997-2004
// 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/v6.1.1/Cartesian_kernel/include/CGAL/Cartesian/Circle_2.h $
// $Id: include/CGAL/Cartesian/Circle_2.h 08b27d3db14 $
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
//
// Author(s) : Andreas Fabri, Herve Bronnimann
#ifndef CGAL_CARTESIAN_CIRCLE_2_H
#define CGAL_CARTESIAN_CIRCLE_2_H
#include <CGAL/Cartesian/predicates_on_points_2.h>
#include <boost/tuple/tuple.hpp>
namespace CGAL {
template <class R_ >
class CircleC2
{
typedef typename R_::Boolean Boolean;
typedef typename R_::FT FT;
typedef typename R_::RT RT;
typedef typename R_::Circle_2 Circle_2;
typedef typename R_::Point_2 Point_2;
typedef boost::tuple<Point_2, FT, Orientation> Rep;
typedef typename R_::template Handle<Rep>::type Base;
Base base;
public:
typedef R_ R;
CircleC2() {}
explicit CircleC2(const Point_2 ¢er, const FT &squared_radius = FT(0),
const Orientation &orient = COUNTERCLOCKWISE) // Is this new?
{
CGAL_kernel_precondition( ( squared_radius >= FT(0) ) &
( orient != COLLINEAR) );
base = Rep(center, squared_radius, orient);
}
Boolean operator==(const CircleC2& s) const;
Boolean operator!=(const CircleC2& s) const;
const Point_2 & center() const
{
return get_pointee_or_identity(base).template get<0>();
}
const FT & squared_radius() const
{
return get_pointee_or_identity(base).template get<1>();
}
Orientation orientation() const
{
return get_pointee_or_identity(base).template get<2>();
}
};
template < class R >
typename R::Boolean
CircleC2<R>::operator==(const CircleC2<R> &t) const
{
if (CGAL::identical(base, t.base))
return true;
return center() == t.center() &&
squared_radius() == t.squared_radius() &&
orientation() == t.orientation();
}
template < class R >
typename R::Boolean
CircleC2<R>::operator!=(const CircleC2<R> &t) const
{
return !(*this == t);
}
} //namespace CGAL
#endif // CGAL_CARTESIAN_CIRCLE_2_H
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