Circular_arc_2.h
// Copyright (c) 2003-2008 INRIA Sophia-Antipolis (France).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
//
// $URL$
// $Id$
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
//
// Author(s) : Monique Teillaud, Sylvain Pion, Pedro Machado
// Partially supported by the IST Programme of the EU as a Shared-cost
// RTD (FET Open) Project under Contract No IST-2000-26473
// (ECG - Effective Computational Geometry for Curves and Surfaces)
// and a STREP (FET Open) Project under Contract No IST-006413
// (ACS -- Algorithms for Complex Shapes)
#ifndef CGAL_CIRCULAR_ARC_2_H
#define CGAL_CIRCULAR_ARC_2_H
#include <CGAL/license/Circular_kernel_2.h>
#include <CGAL/config.h>
#include <CGAL/Bbox_2.h>
#include <CGAL/enum.h>
namespace CGAL {
template <class CircularKernel>
class Circular_arc_2
: public CircularKernel::Kernel_base::Circular_arc_2
{
typedef typename CircularKernel::RT RT;
typedef typename CircularKernel::FT FT;
typedef typename CircularKernel::Point_2 Point_2;
typedef typename CircularKernel::Line_2 Line_2;
typedef typename CircularKernel::Circle_2 Circle_2;
typedef typename CircularKernel::Circular_arc_point_2
Circular_arc_point_2;
typedef typename CircularKernel::Kernel_base::Circular_arc_2 RCircular_arc_2;
// RCircular_arc_2 to avoid clash with self
public:
typedef RCircular_arc_2 Rep;
typedef CircularKernel R;
const Rep& rep() const
{
return *this;
}
Rep& rep()
{
return *this;
}
Circular_arc_2()
: RCircular_arc_2(typename R::Construct_circular_arc_2()())
{}
Circular_arc_2(const Circle_2 &c)
: RCircular_arc_2(typename R::Construct_circular_arc_2()(c))
{}
// Not Documented
Circular_arc_2(const Circle_2 &support,
const Line_2 &l1, const bool b_l1,
const Line_2 &l2, const bool b_l2)
: RCircular_arc_2(typename
R::Construct_circular_arc_2()(support,l1,b_l1,l2,b_l2))
{}
// Not Documented
Circular_arc_2(const Circle_2 &c,
const Circle_2 &c1, const bool b_1,
const Circle_2 &c2, const bool b_2)
: RCircular_arc_2(typename
R::Construct_circular_arc_2()(c,c1,b_1,c2,b_2))
{}
Circular_arc_2(const Point_2 &start,
const Point_2 &middle,
const Point_2 &end)
: RCircular_arc_2(typename
R::Construct_circular_arc_2()(start, middle, end))
{}
Circular_arc_2(const Circle_2 &support,
const Circular_arc_point_2 &begin,
const Circular_arc_point_2 &end)
: RCircular_arc_2(typename
R::Construct_circular_arc_2()(support, begin, end))
{}
Circular_arc_2(const Point_2 &start,
const Point_2 &end,
const FT &bulge)
: RCircular_arc_2(typename
R::Construct_circular_arc_2()(start, end, bulge))
{}
Circular_arc_2(const RCircular_arc_2 & a)
: RCircular_arc_2(a)
{}
decltype(auto)
source() const
{
return typename R::Construct_circular_source_vertex_2()(*this);
}
decltype(auto)
target() const
{
return typename R::Construct_circular_target_vertex_2()(*this);
}
decltype(auto)
left() const
{
return typename R::Construct_circular_min_vertex_2()(*this);
}
decltype(auto)
right() const
{
return typename R::Construct_circular_max_vertex_2()(*this);
}
bool is_x_monotone() const
{
return typename R::Is_x_monotone_2()(*this);
}
bool is_y_monotone() const
{
return typename R::Is_y_monotone_2()(*this);
}
decltype(auto)
supporting_circle() const
{
return typename R::Construct_circle_2()(*this);
}
decltype(auto)
center() const
{
return typename R::Construct_center_2()(*this);
}
decltype(auto)
squared_radius() const
{
return typename R::Compute_squared_radius_2()(*this);
}
Bbox_2 bbox(void) const
{
return typename R::Construct_bbox_2()(*this);
}
};
template < typename CircularKernel >
inline
bool
operator==(const Circular_arc_2<CircularKernel> &p,
const Circular_arc_2<CircularKernel> &q)
{
return CircularKernel().equal_2_object()(p, q);
}
template < typename CircularKernel >
inline
bool
operator!=(const Circular_arc_2<CircularKernel> &p,
const Circular_arc_2<CircularKernel> &q)
{
return ! (p == q);
}
template < typename CK >
std::ostream &
operator<<(std::ostream & os, const Circular_arc_2<CK> &a)
{
// The output format is :
// - supporting circle
// - circle c1
// - bool b1
// - circle c2
// - bool b2
return os << a.supporting_circle() << " "
<< a.source() << " "
<< a.target() << " ";
}
template < typename CK >
std::istream &
operator>>(std::istream & is, Circular_arc_2<CK> &a)
{
typename CK::Circle_2 s;
typename CK::Circular_arc_point_2 p1;
typename CK::Circular_arc_point_2 p2;
is >> s >> p1 >> p2 ;
if (is)
a = Circular_arc_2<CK>(s, p1, p2);
return is;
}
} //namespace CGAL
#endif // CGAL_CIRCULAR_ARC_2_H