update sources to v12.2.3

[ceph.git] / ceph / src / boost / boost / geometry / geometries / pointing_segment.hpp

diff --git a/ceph/src/boost/boost/geometry/geometries/pointing_segment.hpp b/ceph/src/boost/boost/geometry/geometries/pointing_segment.hpp
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+++ b/ceph/src/boost/boost/geometry/geometries/pointing_segment.hpp
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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_GEOMETRIES_POINTING_SEGMENT_HPP
+#define BOOST_GEOMETRY_GEOMETRIES_POINTING_SEGMENT_HPP
+
+#include <cstddef>
+
+#include <boost/concept/assert.hpp>
+#include <boost/core/addressof.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/type_traits/is_const.hpp>
+
+#include <boost/geometry/core/access.hpp>
+#include <boost/geometry/core/assert.hpp>
+#include <boost/geometry/core/coordinate_type.hpp>
+
+#include <boost/geometry/geometries/concepts/point_concept.hpp>
+
+namespace boost { namespace geometry
+{
+
+namespace model
+{
+
+// const or non-const segment type that is meant to be
+// * default constructible
+// * copy constructible
+// * assignable
+// referring_segment does not fit these requirements, hence the
+// pointing_segment class
+//
+// this class is used by the segment_iterator as its value type
+template <typename ConstOrNonConstPoint>
+class pointing_segment
+{
+    BOOST_CONCEPT_ASSERT( (
+        typename boost::mpl::if_
+            <
+                boost::is_const<ConstOrNonConstPoint>,
+                concepts::Point<ConstOrNonConstPoint>,
+                concepts::ConstPoint<ConstOrNonConstPoint>
+            >
+    ) );
+
+    typedef ConstOrNonConstPoint point_type;
+
+public:
+    point_type* first;
+    point_type* second;
+
+    inline pointing_segment()
+        : first(NULL)
+        , second(NULL)
+    {}
+
+    inline pointing_segment(point_type const& p1, point_type const& p2)
+        : first(boost::addressof(p1))
+        , second(boost::addressof(p2))
+    {}
+};
+
+
+} // namespace model
+
+
+// Traits specializations for segment above
+#ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS
+namespace traits
+{
+
+template <typename Point>
+struct tag<model::pointing_segment<Point> >
+{
+    typedef segment_tag type;
+};
+
+template <typename Point>
+struct point_type<model::pointing_segment<Point> >
+{
+    typedef Point type;
+};
+
+template <typename Point, std::size_t Dimension>
+struct indexed_access<model::pointing_segment<Point>, 0, Dimension>
+{
+    typedef model::pointing_segment<Point> segment_type;
+    typedef typename geometry::coordinate_type
+        <
+            segment_type
+        >::type coordinate_type;
+
+    static inline coordinate_type get(segment_type const& s)
+    {
+        BOOST_GEOMETRY_ASSERT( s.first != NULL );
+        return geometry::get<Dimension>(*s.first);
+    }
+
+    static inline void set(segment_type& s, coordinate_type const& value)
+    {
+        BOOST_GEOMETRY_ASSERT( s.first != NULL );
+        geometry::set<Dimension>(*s.first, value);
+    }
+};
+
+
+template <typename Point, std::size_t Dimension>
+struct indexed_access<model::pointing_segment<Point>, 1, Dimension>
+{
+    typedef model::pointing_segment<Point> segment_type;
+    typedef typename geometry::coordinate_type
+        <
+            segment_type
+        >::type coordinate_type;
+
+    static inline coordinate_type get(segment_type const& s)
+    {
+        BOOST_GEOMETRY_ASSERT( s.second != NULL );
+        return geometry::get<Dimension>(*s.second);
+    }
+
+    static inline void set(segment_type& s, coordinate_type const& value)
+    {
+        BOOST_GEOMETRY_ASSERT( s.second != NULL );
+        geometry::set<Dimension>(*s.second, value);
+    }
+};
+
+
+
+} // namespace traits
+#endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_GEOMETRIES_POINTING_SEGMENT_HPP