1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980 |
- // Boost.Geometry Index
- //
- // Get smallest value calculated for indexable's dimensions, used 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_SMALLEST_FOR_INDEXABLE_HPP
- #define BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_SMALLEST_FOR_INDEXABLE_HPP
- namespace boost { namespace geometry { namespace index { namespace detail {
- template <
- typename Geometry,
- typename Indexable,
- typename IndexableTag,
- typename AlgoTag,
- size_t DimensionIndex>
- struct smallest_for_indexable_dimension
- {
- BOOST_MPL_ASSERT_MSG(
- (false),
- NOT_IMPLEMENTED_FOR_THIS_INDEXABLE_TAG_TYPE,
- (smallest_for_indexable_dimension));
- };
- template <
- typename Geometry,
- typename Indexable,
- typename IndexableTag,
- typename AlgoTag,
- size_t N>
- struct smallest_for_indexable
- {
- typedef typename smallest_for_indexable_dimension<
- Geometry, Indexable, IndexableTag, AlgoTag, N - 1
- >::result_type result_type;
- template <typename Data>
- inline static result_type apply(Geometry const& g, Indexable const& i, Data const& data)
- {
- result_type r1 = smallest_for_indexable<
- Geometry, Indexable, IndexableTag, AlgoTag, N - 1
- >::apply(g, i, data);
- result_type r2 = smallest_for_indexable_dimension<
- Geometry, Indexable, IndexableTag, AlgoTag, N - 1
- >::apply(g, i, data);
- return r1 < r2 ? r1 : r2;
- }
- };
- template <
- typename Geometry,
- typename Indexable,
- typename IndexableTag,
- typename AlgoTag>
- struct smallest_for_indexable<Geometry, Indexable, IndexableTag, AlgoTag, 1>
- {
- typedef typename smallest_for_indexable_dimension<
- Geometry, Indexable, IndexableTag, AlgoTag, 0
- >::result_type result_type;
- template <typename Data>
- inline static result_type apply(Geometry const& g, Indexable const& i, Data const& data)
- {
- return
- smallest_for_indexable_dimension<
- Geometry, Indexable, IndexableTag, AlgoTag, 0
- >::apply(g, i, data);
- }
- };
- }}}} // namespace boost::geometry::index::detail
- #endif // BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_SMALLEST_FOR_INDEXABLE_HPP
|