mirror of https://github.com/CGAL/cgal
121 lines
2.9 KiB
C++
121 lines
2.9 KiB
C++
// Copyright (c) 1999, 2016
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// Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland),
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// INRIA Sophia-Antipolis (France),
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// Max-Planck-Institute Saarbruecken (Germany),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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//
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// Author(s) : Mariette Yvinec
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// Sylvain Pion
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#ifndef CGAL_CARTESIAN_WEIGHTED_POINT_2_H
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#define CGAL_CARTESIAN_WEIGHTED_POINT_2_H
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#include <iostream>
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#include <boost/tuple/tuple.hpp>
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namespace CGAL {
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template < class R_ >
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class Weighted_pointC2
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{
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typedef typename R_::Point_2 Point_2;
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typedef typename R_::FT FT;
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typedef typename R_::FT Weight;
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typedef boost::tuple<Point_2, Weight> Rep;
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typedef typename R_::template Handle<Rep>::type Base;
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Base base;
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public:
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Weighted_pointC2 ()
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{}
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//explicit
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Weighted_pointC2 (const Point_2 &p)
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: base(p,0)
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{}
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Weighted_pointC2 (const Point_2 &p, const Weight &w)
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: base(p,w)
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{}
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// Constructors from coordinates are also provided for convenience, except
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// that they are only from Cartesian coordinates, and with no weight, so as
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// to avoid any potential ambiguity between the homogeneous weight and the
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// power weight (it should be easy enough to pass a Point explicitly in those
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// cases).
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Weighted_pointC2(const FT& x, const FT& y)
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: base(Point_2(x,y),0)
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{}
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const Point_2 & point() const
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{
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return get_pointee_or_identity(base).template get<0>();
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}
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const Weight & weight() const
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{
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return get_pointee_or_identity(base).template get<1>();
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}
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};
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template < class R_ >
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std::ostream &
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operator<<(std::ostream &os, const Weighted_pointC2<R_> &p)
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{
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switch(get_mode(os))
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{
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case IO::ASCII :
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return os << p.point() << " " << p.weight();
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case IO::BINARY :
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os << p.point();
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write(os, p.weight());
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return os;
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default:
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return os << "Weighted_point(" << p.point() << ", " << p.weight() << ")";
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}
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}
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template < class R_ >
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std::istream &
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operator>>(std::istream &is, Weighted_pointC2<R_> &wp)
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{
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typename Weighted_pointC2<R_>::Weight w;
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typename Weighted_pointC2<R_>::Point p;
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is >> p;
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if(!is) return is;
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if(is_ascii(is))
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is >> w;
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else
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read(is, w);
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if (is)
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wp = Weighted_point_2<R_>(p,w);
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return is;
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}
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} // namespace CGAL
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#endif // CGAL_CARTESIAN_WEIGHTED_POINT_2_H
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