| // 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 |
