indirect_less_xy_2.h

很多二维 三维几何计算算法 C++ 类库

// Copyright (c) 2000  Max-Planck-Institute Saarbruecken (Germany).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you may redistribute it under
// the terms of the Q Public License version 1.0.
// See the file LICENSE.QPL distributed with CGAL.
//
// 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.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.3-branch/Partition_2/include/CGAL/Partition_2/Indirect_less_xy_2.h $
// $Id: Indirect_less_xy_2.h 31311 2006-05-29 08:30:22Z wein $
// 
//
// Author(s)     : Susan Hert <[e-mail]>

#ifndef CGAL_INDIRECT_LESS_XY_2_H
#define CGAL_INDIRECT_LESS_XY_2_H

namespace CGAL {

template <class Traits>
class Indirect_less_xy_2 
{
   public:
     typedef typename Traits::Less_xy_2     Less_xy_2;

     Indirect_less_xy_2() : _less_xy_2(Traits().less_xy_2_object()) 
     { }
     
     template <class Iterator>
     bool 
     operator()(Iterator p, Iterator q) const
     { 
        return _less_xy_2(*p, *q);
     }

   private:
     Less_xy_2 _less_xy_2;
};

}

#endif // CGAL_INDIRECT_LESS_XY_2_H