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Diffstat (limited to 'boost/geometry/index/detail/algorithms/sum_for_indexable.hpp')
| -rw-r--r-- | boost/geometry/index/detail/algorithms/sum_for_indexable.hpp | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/boost/geometry/index/detail/algorithms/sum_for_indexable.hpp b/boost/geometry/index/detail/algorithms/sum_for_indexable.hpp new file mode 100644 index 0000000000..4aef36352e --- /dev/null +++ b/boost/geometry/index/detail/algorithms/sum_for_indexable.hpp @@ -0,0 +1,76 @@ +// Boost.Geometry Index +// +// Sum values calculated for indexable's dimensions, used e.g. in R-tree k nearest neighbors query +// +// Copyright (c) 2011-2013 Adam Wulkiewicz, Lodz, Poland. +// +// 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_INDEX_DETAIL_ALGORITHMS_SUM_FOR_INDEXABLE_HPP +#define BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_SUM_FOR_INDEXABLE_HPP + +namespace boost { namespace geometry { namespace index { namespace detail { + +template < + typename Geometry, + typename Indexable, + typename IndexableTag, + typename AlgoTag, + size_t DimensionIndex> +struct sum_for_indexable_dimension +{ + BOOST_MPL_ASSERT_MSG( + (false), + NOT_IMPLEMENTED_FOR_THIS_INDEXABLE_TAG_TYPE, + (sum_for_indexable_dimension)); +}; + +template < + typename Geometry, + typename Indexable, + typename IndexableTag, + typename AlgoTag, + size_t N> +struct sum_for_indexable +{ + typedef typename sum_for_indexable_dimension< + Geometry, Indexable, IndexableTag, AlgoTag, N - 1 + >::result_type result_type; + + inline static result_type apply(Geometry const& g, Indexable const& i) + { + return + sum_for_indexable< + Geometry, Indexable, IndexableTag, AlgoTag, N - 1 + >::apply(g, i) + + sum_for_indexable_dimension< + Geometry, Indexable, IndexableTag, AlgoTag, N - 1 + >::apply(g, i); + } +}; + +template < + typename Geometry, + typename Indexable, + typename IndexableTag, + typename AlgoTag> +struct sum_for_indexable<Geometry, Indexable, IndexableTag, AlgoTag, 1> +{ + typedef typename sum_for_indexable_dimension< + Geometry, Indexable, IndexableTag, AlgoTag, 0 + >::result_type result_type; + + inline static result_type apply(Geometry const& g, Indexable const& i) + { + return + sum_for_indexable_dimension< + Geometry, Indexable, IndexableTag, AlgoTag, 0 + >::apply(g, i); + } +}; + +}}}} // namespace boost::geometry::index::detail + +#endif // BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_SUM_FOR_INDEXABLE_HPP |