strategies/concepts/segment_intersect_concept.hpp

0001 // Boost.Geometry (aka GGL, Generic Geometry Library)
0002
0003 // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
0004 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
0005 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
0006
0007 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
0008 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
0009
0010 // Use, modification and distribution is subject to the Boost Software License,
0011 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
0012 // http://www.boost.org/LICENSE_1_0.txt)
0013
0014 #ifndef BOOST_GEOMETRY_STRATEGIES_CONCEPTS_SEGMENT_INTERSECT_CONCEPT_HPP
0015 #define BOOST_GEOMETRY_STRATEGIES_CONCEPTS_SEGMENT_INTERSECT_CONCEPT_HPP
0016
0017
0018 //NOT FINISHED!
0019
0020 #include <boost/concept_check.hpp>
0021
0022
0023 namespace boost { namespace geometry { namespace concepts
0024 {
0025
0026
0027 /*!
0028     \brief Checks strategy for segment intersection
0029     \ingroup segment_intersection
0030 */
0031 template <typename Strategy>
0032 class SegmentIntersectStrategy
0033 {
0034 #ifndef DOXYGEN_NO_CONCEPT_MEMBERS
0035
0036     // 1) must define return_type
0037     typedef typename Strategy::return_type return_type;
0038
0039     // 2) must define point_type (of segment points)
0040     //typedef typename Strategy::point_type point_type;
0041
0042     // 3) must define segment_type 1 and 2 (of segment points)
0043     typedef typename Strategy::segment_type1 segment_type1;
0044     typedef typename Strategy::segment_type2 segment_type2;
0045
0046
0047     struct check_methods
0048     {
0049         static void apply()
0050         {
0051             Strategy const* str;
0052
0053             return_type* rt;
0054             //point_type const* p;
0055             segment_type1 const* s1;
0056             segment_type2 const* s2;
0057
0058             // 4) must implement a method apply
0059             //    having two segments
0060             *rt = str->apply(*s1, *s2);
0061
0062         }
0063     };
0064
0065
0066 public :
0067     BOOST_CONCEPT_USAGE(SegmentIntersectStrategy)
0068     {
0069         check_methods::apply();
0070     }
0071 #endif
0072 };
0073
0074
0075
0076 }}} // namespace boost::geometry::concepts
0077
0078 #endif // BOOST_GEOMETRY_STRATEGIES_CONCEPTS_SEGMENT_INTERSECT_CONCEPT_HPP