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+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands.
+// Copyright (c) 2008-2014 Bruno Lalande, Paris, France.
+// Copyright (c) 2009-2014 Mateusz Loskot, London, UK.
+// Copyright (c) 2013-2014 Adam Wulkiewicz, Lodz, Poland
+
+// This file was modified by Oracle on 2013-2014.
+// Modifications copyright (c) 2013-2014, Oracle and/or its affiliates.
+
+// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
+// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
+
+// 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_DETAIL_DISJOINT_BOX_BOX_HPP
+#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISJOINT_BOX_BOX_HPP
+
+#include <cstddef>
+
+#include <boost/geometry/core/access.hpp>
+#include <boost/geometry/core/tags.hpp>
+
+#include <boost/geometry/algorithms/dispatch/disjoint.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+#ifndef DOXYGEN_NO_DETAIL
+namespace detail { namespace disjoint
+{
+
+
+template
+<
+ typename Box1, typename Box2,
+ std::size_t Dimension, std::size_t DimensionCount
+>
+struct box_box
+{
+ static inline bool apply(Box1 const& box1, Box2 const& box2)
+ {
+ if (get<max_corner, Dimension>(box1) < get<min_corner, Dimension>(box2))
+ {
+ return true;
+ }
+ if (get<min_corner, Dimension>(box1) > get<max_corner, Dimension>(box2))
+ {
+ return true;
+ }
+ return box_box
+ <
+ Box1, Box2,
+ Dimension + 1, DimensionCount
+ >::apply(box1, box2);
+ }
+};
+
+
+template <typename Box1, typename Box2, std::size_t DimensionCount>
+struct box_box<Box1, Box2, DimensionCount, DimensionCount>
+{
+ static inline bool apply(Box1 const& , Box2 const& )
+ {
+ return false;
+ }
+};
+
+
+/*!
+ \brief Internal utility function to detect of boxes are disjoint
+ \note Is used from other algorithms, declared separately
+ to avoid circular references
+ */
+template <typename Box1, typename Box2>
+inline bool disjoint_box_box(Box1 const& box1, Box2 const& box2)
+{
+ return box_box
+ <
+ Box1, Box2,
+ 0, dimension<Box1>::type::value
+ >::apply(box1, box2);
+}
+
+
+}} // namespace detail::disjoint
+#endif // DOXYGEN_NO_DETAIL
+
+
+#ifndef DOXYGEN_NO_DISPATCH
+namespace dispatch
+{
+
+
+template <typename Box1, typename Box2, std::size_t DimensionCount>
+struct disjoint<Box1, Box2, DimensionCount, box_tag, box_tag, false>
+ : detail::disjoint::box_box<Box1, Box2, 0, DimensionCount>
+{};
+
+
+} // namespace dispatch
+#endif // DOXYGEN_NO_DISPATCH
+
+
+}} // namespace boost::geometry
+
+
+#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISJOINT_BOX_BOX_HPP