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

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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/ft_constructions_2.h $
00019 // $Id: ft_constructions_2.h 28567 2006-02-16 14:30:13Z lsaboret $
00020 // 
00021 //
00022 // Author(s)     : Herve Bronnimann
00023 
00024 #ifndef CGAL_CARTESIAN_FT_CONSTRUCTIONS_2_H
00025 #define CGAL_CARTESIAN_FT_CONSTRUCTIONS_2_H
00026 
00027 CGAL_BEGIN_NAMESPACE
00028 
00029 template < class K >
00030 inline
00031 typename K::FT
00032 squared_distance(const PointC2<K> &p,
00033                  const PointC2<K> &q)
00034 {
00035   return squared_distanceC2(p.x(), p.y(), q.x(), q.y());
00036 }
00037 
00038 template < class K >
00039 inline
00040 typename K::FT
00041 scaled_distance_to_line(const LineC2<K> &l,
00042                         const PointC2<K> &p)
00043 {
00044   return scaled_distance_to_lineC2(l.a(), l.b(), l.c(), p.x(), p.y());
00045 }
00046 
00047 template < class K >
00048 inline
00049 typename K::FT
00050 scaled_distance_to_line(const PointC2<K> &p,
00051                         const PointC2<K> &q,
00052                         const PointC2<K> &r)
00053 {
00054   return scaled_distance_to_lineC2(p.x(), p.y(), q.x(), q.y(), r.x(), r.y());
00055 }
00056 
00057 template < class K >
00058 inline
00059 typename K::FT
00060 line_y_at_x(const LineC2<K> &l, const typename K::FT &x)
00061 {
00062   return line_y_at_xC2(l.a(), l.b(), l.c(), x);
00063 }
00064 
00065 template < class K >
00066 inline
00067 typename K::FT
00068 line_x_at_y(const LineC2<K> &l, const typename K::FT &y)
00069 {
00070   return line_y_at_xC2(l.b(), l.a(), l.c(), y);
00071 }
00072 
00073 CGAL_END_NAMESPACE
00074 
00075 #endif // CGAL_CARTESIAN_FT_CONSTRUCTIONS_2_H