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

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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/Line_2.h $
00019 // $Id: Line_2.h 49057 2009-04-30 14:03:52Z spion $
00020 // 
00021 //
00022 // Author(s)     : Andreas Fabri, Herve Bronnimann
00023 
00024 #ifndef CGAL_CARTESIAN_LINE_2_H
00025 #define CGAL_CARTESIAN_LINE_2_H
00026 
00027 #include <CGAL/array.h>
00028 #include <CGAL/Handle_for.h>
00029 #include <CGAL/predicates/kernel_ftC2.h>
00030 
00031 CGAL_BEGIN_NAMESPACE
00032 
00033 template < class R_ >
00034 class LineC2
00035 {
00036   typedef typename R_::FT                   FT;
00037   typedef typename R_::Point_2              Point_2;
00038   typedef typename R_::Direction_2          Direction_2;
00039   typedef typename R_::Vector_2             Vector_2;
00040   typedef typename R_::Ray_2                Ray_2;
00041   typedef typename R_::Segment_2            Segment_2;
00042   typedef typename R_::Line_2               Line_2;
00043 
00044   typedef cpp0x::array<FT, 3>               Rep;
00045   typedef typename R_::template Handle<Rep>::type  Base;
00046 
00047   Base base;
00048 
00049 public:
00050 
00051   typedef R_                                     R;
00052 
00053   LineC2() {}
00054 
00055   LineC2(const FT &a, const FT &b, const FT &c)
00056     : base(CGAL::make_array(a, b, c)) {}
00057   
00058   typename R_::Boolean   operator==(const LineC2 &l) const;
00059   typename R_::Boolean   operator!=(const LineC2 &l) const;
00060 
00061   const FT & a() const
00062   {
00063       return get(base)[0];
00064   }
00065   const FT & b() const
00066   {
00067       return get(base)[1];
00068   }
00069   const FT & c() const
00070   {
00071       return get(base)[2];
00072   }
00073 
00074 };
00075 
00076 template < class R >
00077 CGAL_KERNEL_INLINE
00078 typename R::Boolean
00079 LineC2<R>::operator==(const LineC2<R> &l) const
00080 {
00081   if (CGAL::identical(base, l.base))
00082       return true;
00083   return equal_lineC2(a(), b(), c(), l.a(), l.b(), l.c());
00084 }
00085 
00086 template < class R >
00087 inline
00088 typename R::Boolean
00089 LineC2<R>::operator!=(const LineC2<R> &l) const
00090 {
00091   return ! (*this == l);
00092 }
00093 
00094 CGAL_END_NAMESPACE
00095 
00096 #endif // CGAL_CARTESIAN_LINE_2_H