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+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
+// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
+// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
+
+// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
+// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
+
+// Use, modification and distribution is subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_GEOMETRY_ALGORITHMS_REVERSE_HPP
+#define BOOST_GEOMETRY_ALGORITHMS_REVERSE_HPP
+
+#include <algorithm>
+
+#include <boost/range.hpp>
+#include <boost/typeof/typeof.hpp>
+
+#include <boost/geometry/core/interior_rings.hpp>
+#include <boost/geometry/geometries/concepts/check.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+
+#ifndef DOXYGEN_NO_DETAIL
+namespace detail { namespace reverse
+{
+
+
+template <typename Range>
+struct range_reverse
+{
+ static inline void apply(Range& range)
+ {
+ std::reverse(boost::begin(range), boost::end(range));
+ }
+};
+
+
+template <typename Polygon>
+struct polygon_reverse
+{
+ static inline void apply(Polygon& polygon)
+ {
+ typedef typename geometry::ring_type<Polygon>::type ring_type;
+
+ typedef range_reverse<ring_type> per_range;
+ per_range::apply(exterior_ring(polygon));
+
+ typename interior_return_type<Polygon>::type rings
+ = interior_rings(polygon);
+ for (BOOST_AUTO_TPL(it, boost::begin(rings)); it != boost::end(rings); ++it)
+ {
+ per_range::apply(*it);
+ }
+ }
+};
+
+
+}} // namespace detail::reverse
+#endif // DOXYGEN_NO_DETAIL
+
+
+#ifndef DOXYGEN_NO_DISPATCH
+namespace dispatch
+{
+
+
+template
+<
+ typename Tag,
+ typename Geometry
+>
+struct reverse
+{
+ static inline void apply(Geometry&)
+ {}
+};
+
+
+template <typename Ring>
+struct reverse<ring_tag, Ring>
+ : detail::reverse::range_reverse<Ring>
+{};
+
+
+template <typename LineString>
+struct reverse<linestring_tag, LineString>
+ : detail::reverse::range_reverse<LineString>
+{};
+
+
+template <typename Polygon>
+struct reverse<polygon_tag, Polygon>
+ : detail::reverse::polygon_reverse<Polygon>
+{};
+
+
+} // namespace dispatch
+#endif
+
+
+/*!
+\brief Reverses the points within a geometry
+\details Generic function to reverse a geometry. It resembles the std::reverse
+ functionality, but it takes the geometry type into account. Only for a ring
+ or for a linestring it is the same as the std::reverse.
+\ingroup reverse
+\tparam Geometry \tparam_geometry
+\param geometry \param_geometry which will be reversed
+
+\qbk{[include reference/algorithms/reverse.qbk]}
+*/
+template <typename Geometry>
+inline void reverse(Geometry& geometry)
+{
+ concept::check<Geometry>();
+
+ dispatch::reverse
+ <
+ typename tag<Geometry>::type,
+ Geometry
+ >::apply(geometry);
+}
+
+}} // namespace boost::geometry
+
+
+#endif // BOOST_GEOMETRY_ALGORITHMS_REVERSE_HPP