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- // Boost.Geometry (aka GGL, Generic Geometry Library)
- // Copyright (c) 2014, Oracle and/or its affiliates.
- // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
- // Licensed under the Boost Software License version 1.0.
- // http://www.boost.org/users/license.html
- #ifndef BOOST_GEOMETRY_ITERATORS_POINT_REVERSE_ITERATOR_HPP
- #define BOOST_GEOMETRY_ITERATORS_POINT_REVERSE_ITERATOR_HPP
- #include <iterator>
- #include <boost/mpl/assert.hpp>
- #include <boost/type_traits/is_convertible.hpp>
- #include <boost/geometry/iterators/point_iterator.hpp>
- namespace boost { namespace geometry
- {
- // MK:: need to add doc here
- template <typename Geometry>
- class point_reverse_iterator
- : public std::reverse_iterator<point_iterator<Geometry> >
- {
- private:
- typedef std::reverse_iterator<point_iterator<Geometry> > base_type;
- template <typename OtherGeometry> friend class point_reverse_iterator;
- template <typename G>
- friend inline point_reverse_iterator<G> points_rbegin(G&);
- template <typename G>
- friend inline point_reverse_iterator<G> points_rend(G&);
- inline point_reverse_iterator(base_type const& base_it)
- : base_type(base_it) {}
- public:
- inline point_reverse_iterator() {}
- template <typename OtherGeometry>
- inline
- point_reverse_iterator(point_reverse_iterator<OtherGeometry> const& other)
- : base_type(other.base())
- {
- static const bool is_conv = boost::is_convertible
- <
- std::reverse_iterator<point_iterator<Geometry> >,
- std::reverse_iterator<point_iterator<OtherGeometry> >
- >::value;
- BOOST_MPL_ASSERT_MSG((is_conv),
- NOT_CONVERTIBLE,
- (point_reverse_iterator<OtherGeometry>));
- }
- };
- // MK:: need to add doc here
- template <typename Geometry>
- inline point_reverse_iterator<Geometry>
- points_rbegin(Geometry& geometry)
- {
- return std::reverse_iterator
- <
- point_iterator<Geometry>
- >(points_end(geometry));
- }
- // MK:: need to add doc here
- template <typename Geometry>
- inline point_reverse_iterator<Geometry>
- points_rend(Geometry& geometry)
- {
- return std::reverse_iterator
- <
- point_iterator<Geometry>
- >(points_begin(geometry));
- }
- }} // namespace boost::geometry
- #endif // BOOST_GEOMETRY_ITERATORS_POINT_REVERSE_ITERATOR_HPP
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