summaryrefslogtreecommitdiff
path: root/boost/geometry/algorithms/detail/expand/indexed.hpp
diff options
context:
space:
mode:
Diffstat (limited to 'boost/geometry/algorithms/detail/expand/indexed.hpp')
-rw-r--r--boost/geometry/algorithms/detail/expand/indexed.hpp144
1 files changed, 144 insertions, 0 deletions
diff --git a/boost/geometry/algorithms/detail/expand/indexed.hpp b/boost/geometry/algorithms/detail/expand/indexed.hpp
new file mode 100644
index 0000000000..bdd6eb4506
--- /dev/null
+++ b/boost/geometry/algorithms/detail/expand/indexed.hpp
@@ -0,0 +1,144 @@
+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
+// Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
+// Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
+// Copyright (c) 2014-2015 Samuel Debionne, Grenoble, France.
+
+// This file was modified by Oracle on 2015.
+// Modifications copyright (c) 2015, Oracle and/or its affiliates.
+
+// 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.
+
+// Distributed under 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_EXPAND_INDEXED_HPP
+#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_EXPAND_INDEXED_HPP
+
+#include <cstddef>
+
+#include <boost/geometry/core/access.hpp>
+#include <boost/geometry/core/tags.hpp>
+
+#include <boost/geometry/util/select_coordinate_type.hpp>
+
+#include <boost/geometry/strategies/compare.hpp>
+#include <boost/geometry/policies/compare.hpp>
+
+#include <boost/geometry/algorithms/dispatch/expand.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+#ifndef DOXYGEN_NO_DETAIL
+namespace detail { namespace expand
+{
+
+
+template
+<
+ typename StrategyLess, typename StrategyGreater,
+ std::size_t Index,
+ std::size_t Dimension, std::size_t DimensionCount
+>
+struct indexed_loop
+{
+ template <typename Box, typename Geometry>
+ static inline void apply(Box& box, Geometry const& source)
+ {
+ typedef typename strategy::compare::detail::select_strategy
+ <
+ StrategyLess, 1, Box, Dimension
+ >::type less_type;
+
+ typedef typename strategy::compare::detail::select_strategy
+ <
+ StrategyGreater, -1, Box, Dimension
+ >::type greater_type;
+
+ typedef typename select_coordinate_type
+ <
+ Box,
+ Geometry
+ >::type coordinate_type;
+
+ less_type less;
+ greater_type greater;
+
+ coordinate_type const coord = get<Index, Dimension>(source);
+
+ if (less(coord, get<min_corner, Dimension>(box)))
+ {
+ set<min_corner, Dimension>(box, coord);
+ }
+
+ if (greater(coord, get<max_corner, Dimension>(box)))
+ {
+ set<max_corner, Dimension>(box, coord);
+ }
+
+ indexed_loop
+ <
+ StrategyLess, StrategyGreater,
+ Index, Dimension + 1, DimensionCount
+ >::apply(box, source);
+ }
+};
+
+
+template
+<
+ typename StrategyLess, typename StrategyGreater,
+ std::size_t Index, std::size_t DimensionCount
+>
+struct indexed_loop
+ <
+ StrategyLess, StrategyGreater,
+ Index, DimensionCount, DimensionCount
+ >
+{
+ template <typename Box, typename Geometry>
+ static inline void apply(Box&, Geometry const&) {}
+};
+
+
+
+// Changes a box such that the other box is also contained by the box
+template
+<
+ std::size_t Dimension, std::size_t DimensionCount,
+ typename StrategyLess, typename StrategyGreater
+>
+struct expand_indexed
+{
+ template <typename Box, typename Geometry>
+ static inline void apply(Box& box, Geometry const& geometry)
+ {
+ indexed_loop
+ <
+ StrategyLess, StrategyGreater,
+ 0, Dimension, DimensionCount
+ >::apply(box, geometry);
+
+ indexed_loop
+ <
+ StrategyLess, StrategyGreater,
+ 1, Dimension, DimensionCount
+ >::apply(box, geometry);
+ }
+};
+
+
+}} // namespace detail::expand
+#endif // DOXYGEN_NO_DETAIL
+
+
+}} // namespace boost::geometry
+
+#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_EXPAND_INDEXED_HPP