BWAPI: SPAR/AIModule/BWTA/vendors/CGAL/CGAL/Cartesian/predicates_on_points

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00001 // Copyright (c) 2000  Utrecht University (The Netherlands),
00002 // ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
00003 // INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
00004 // (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
00005 // and Tel-Aviv University (Israel).  All rights reserved.
00006 //
00007 // This file is part of CGAL (www.cgal.org); you can redistribute it and/or
00008 // modify it under the terms of the GNU Lesser General Public License as
00009 // published by the Free Software Foundation; version 2.1 of the License.
00010 // See the file LICENSE.LGPL distributed with CGAL.
00011 //
00012 // Licensees holding a valid commercial license may use this file in
00013 // accordance with the commercial license agreement provided with the software.
00014 //
00015 // This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
00016 // WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
00017 //
00018 // $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.5-branch/Cartesian_kernel/include/CGAL/Cartesian/predicates_on_points_2.h $
00019 // $Id: predicates_on_points_2.h 44906 2008-08-12 11:55:24Z spion $
00020 // 
00021 //
00022 // Author(s)     : Herve Bronnimann
00023 
00024 #ifndef CGAL_CARTESIAN_PREDICATES_ON_POINTS_2_H
00025 #define CGAL_CARTESIAN_PREDICATES_ON_POINTS_2_H
00026 
00027 #include <CGAL/Cartesian/Point_2.h>
00028 #include <CGAL/predicates/kernel_ftC2.h>
00029 
00030 CGAL_BEGIN_NAMESPACE
00031 
00032 template < class K >
00033 inline
00034 bool
00035 equal_xy(const PointC2<K> &p, const PointC2<K> &q)
00036 {
00037   return CGAL_AND( p.x() == q.x() , p.y() == q.y() );
00038 }
00039 
00040 #if 0
00041 // Unused, undocumented, un-functorized.
00042 template < class K >
00043 inline
00044 Comparison_result
00045 compare_deltax_deltay(const PointC2<K>& p,
00046                       const PointC2<K>& q,
00047                       const PointC2<K>& r,
00048                       const PointC2<K>& s)
00049 {
00050   return compare_deltax_deltayC2(p.x(), q.x(), r.y(), s.y());
00051 }
00052 #endif
00053 
00054 template < class K >
00055 inline
00056 Comparison_result
00057 compare_lexicographically_yx(const PointC2<K> &p,
00058                              const PointC2<K> &q)
00059 {
00060   return compare_lexicographically_xyC2(p.y(), p.x(), q.y(), q.x());
00061 }
00062 
00063 CGAL_END_NAMESPACE
00064 
00065 #endif // CGAL_CARTESIAN_PREDICATES_ON_POINTS_2_H