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- #ifndef BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_SEGMENT_CONCEPT_HPP
- #define BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_SEGMENT_CONCEPT_HPP
- #include <boost/concept_check.hpp>
- #include <boost/core/ignore_unused.hpp>
- #include <boost/geometry/core/access.hpp>
- #include <boost/geometry/core/point_type.hpp>
- #include <boost/geometry/geometries/concepts/concept_type.hpp>
- #include <boost/geometry/geometries/concepts/point_concept.hpp>
- namespace boost { namespace geometry { namespace concepts
- {
- template <typename Geometry>
- class Segment
- {
- #ifndef DOXYGEN_NO_CONCEPT_MEMBERS
- typedef typename point_type<Geometry>::type point_type;
- BOOST_CONCEPT_ASSERT( (concepts::Point<point_type>) );
- template <size_t Index, size_t Dimension, size_t DimensionCount>
- struct dimension_checker
- {
- static void apply()
- {
- Geometry* s = 0;
- geometry::set<Index, Dimension>(*s, geometry::get<Index, Dimension>(*s));
- dimension_checker<Index, Dimension + 1, DimensionCount>::apply();
- }
- };
- template <size_t Index, size_t DimensionCount>
- struct dimension_checker<Index, DimensionCount, DimensionCount>
- {
- static void apply() {}
- };
- public :
- BOOST_CONCEPT_USAGE(Segment)
- {
- static const size_t n = dimension<point_type>::type::value;
- dimension_checker<0, 0, n>::apply();
- dimension_checker<1, 0, n>::apply();
- }
- #endif
- };
- template <typename Geometry>
- class ConstSegment
- {
- #ifndef DOXYGEN_NO_CONCEPT_MEMBERS
- typedef typename point_type<Geometry>::type point_type;
- typedef typename coordinate_type<Geometry>::type coordinate_type;
- BOOST_CONCEPT_ASSERT( (concepts::ConstPoint<point_type>) );
- template <size_t Index, size_t Dimension, size_t DimensionCount>
- struct dimension_checker
- {
- static void apply()
- {
- const Geometry* s = 0;
- coordinate_type coord(geometry::get<Index, Dimension>(*s));
- boost::ignore_unused(coord);
- dimension_checker<Index, Dimension + 1, DimensionCount>::apply();
- }
- };
- template <size_t Index, size_t DimensionCount>
- struct dimension_checker<Index, DimensionCount, DimensionCount>
- {
- static void apply() {}
- };
- public :
- BOOST_CONCEPT_USAGE(ConstSegment)
- {
- static const size_t n = dimension<point_type>::type::value;
- dimension_checker<0, 0, n>::apply();
- dimension_checker<1, 0, n>::apply();
- }
- #endif
- };
- template <typename Geometry>
- struct concept_type<Geometry, segment_tag>
- {
- using type = Segment<Geometry>;
- };
- template <typename Geometry>
- struct concept_type<Geometry const, segment_tag>
- {
- using type = ConstSegment<Geometry>;
- };
- }}}
- #endif
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