/usr/include/CGAL/Circle_3.h is in libcgal-dev 4.2-5ubuntu1.
This file is owned by root:root, with mode 0o644.
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// 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; either version 3 of the License,
// or (at your option) any later version.
//
// 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.
//
// 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)
//
// $URL$
// $Id$
//
// Author(s) : Monique Teillaud <Monique.Teillaud@sophia.inria.fr>
// Sylvain Pion
// Pedro Machado <tashimir@gmail.com>
// Julien Hazebrouck
// Damien Leroy
#ifndef CGAL_CIRCLE_3_H
#define CGAL_CIRCLE_3_H
#include <CGAL/assertions.h>
#include <boost/type_traits/is_same.hpp>
#include <CGAL/Kernel/Return_base_tag.h>
#include <CGAL/Bbox_3.h>
#include <CGAL/representation_tags.h>
#include <CGAL/Dimension.h>
namespace CGAL {
template <class R_>
class Circle_3
: public R_::Kernel_base::Circle_3
{
typedef typename R_::RT RT;
typedef typename R_::FT FT;
typedef typename R_::Point_3 Point_3;
typedef typename R_::Plane_3 Plane_3;
typedef typename R_::Vector_3 Vector_3;
typedef typename R_::Sphere_3 Sphere_3;
typedef typename R_::Direction_3 Direction_3;
typedef Circle_3 Self;
CGAL_static_assertion((boost::is_same<Self, typename R_::Circle_3>::value));
public:
typedef Dimension_tag<3> Ambient_dimension;
typedef Dimension_tag<1> Feature_dimension;
typedef typename R_::Kernel_base::Circle_3 Rep;
typedef R_ R;
const Rep& rep() const
{
return *this;
}
Rep& rep()
{
return *this;
}
Circle_3() {}
Circle_3(const Sphere_3& s, const Plane_3& p, int a)
: Rep(typename R::Construct_circle_3()(s,p,a)) {}
Circle_3(const Point_3& c, const FT& sr, const Plane_3& p)
: Rep(typename R::Construct_circle_3()(c,sr,p)) {}
Circle_3(const Point_3& c, const FT& sr, const Direction_3& d)
: Rep(typename R::Construct_circle_3()(c,sr,d)) {}
Circle_3(const Point_3& c, const FT& sr, const Vector_3& v)
: Rep(typename R::Construct_circle_3()(c,sr,v)) {}
Circle_3(const Sphere_3& s1, const Sphere_3& s2)
: Rep(typename R::Construct_circle_3()(s1,s2)) {}
Circle_3(const Sphere_3& s, const Plane_3& p)
: Rep(typename R::Construct_circle_3()(s,p)) {}
Circle_3(const Plane_3& p, const Sphere_3& s)
: Rep(typename R::Construct_circle_3()(p,s)) {}
Circle_3(const Point_3& p1, const Point_3& p2, const Point_3& p3)
: Rep(typename R::Construct_circle_3()(p1,p2,p3)) {}
Circle_3(const Rep& r)
: Rep(r) {}
typename cpp11::result_of
<typename R::Construct_sphere_3( Circle_3)>::type
diametral_sphere() const
{
return typename R::Construct_sphere_3()(*this);
}
Point_3 center() const
{
return typename R::Construct_sphere_3()(*this).center();
}
FT squared_radius() const
{
return typename R::Construct_sphere_3()(*this).squared_radius();
}
typename cpp11::result_of
<typename R::Construct_plane_3( Circle_3)>::type
supporting_plane() const
{
return typename R::Construct_plane_3()(*this);
}
Bbox_3 bbox() const
{
return typename R::Construct_bbox_3()(*this);
}
FT area_divided_by_pi() const
{
return typename R::Compute_area_divided_by_pi_3()(*this);
}
double approximate_area() const
{
return typename R::Compute_approximate_area_3()(*this);
}
FT squared_length_divided_by_pi_square() const
{
return typename R::Compute_squared_length_divided_by_pi_square_3()(*this);
}
double approximate_squared_length() const
{
return typename R::Compute_approximate_squared_length_3()(*this);
}
typename R::Boolean
has_on(const Point_3 &p) const
{
return typename R::Has_on_3()(*this, p);
}
};
template < typename R >
inline
bool
operator==(const Circle_3<R> &p,
const Circle_3<R> &q)
{
return R().equal_3_object()(p, q);
}
template < typename R >
inline
bool
operator!=(const Circle_3<R> &p,
const Circle_3<R> &q)
{
return ! (p == q);
}
template < typename R >
std::ostream &
operator<<(std::ostream & os, const Circle_3<R> &c)
{
return os << c.supporting_plane() << " "
<< c.diametral_sphere() << " ";
}
template < typename R >
std::istream &
operator>>(std::istream & is, Circle_3<R> &c)
{
typename R::Plane_3 p;
typename R::Sphere_3 s;
is >> p >> s ;
if (is)
c = Circle_3<R>(p, s);
return is;
}
} //namespace CGAL
#endif // CGAL_CIRCLE_3_H
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