116 lines
2.8 KiB
C++
116 lines
2.8 KiB
C++
// Boost.Geometry Index
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//
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// R-tree node elements access
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//
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// Copyright (c) 2011-2015 Adam Wulkiewicz, Lodz, Poland.
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//
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// This file was modified by Oracle on 2021.
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// Modifications copyright (c) 2021 Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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//
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_NODE_ELEMENTS_HPP
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#define BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_NODE_ELEMENTS_HPP
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#include <boost/container/vector.hpp>
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#include <boost/geometry/algorithms/detail/expand_by_epsilon.hpp>
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#include <boost/geometry/index/detail/varray.hpp>
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#include <boost/geometry/index/detail/rtree/node/pairs.hpp>
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#include <boost/geometry/index/detail/translator.hpp>
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namespace boost { namespace geometry { namespace index {
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namespace detail { namespace rtree {
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// element's indexable type
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template <typename Element, typename Translator>
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struct element_indexable_type
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{
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typedef typename indexable_type<Translator>::type type;
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};
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template <typename First, typename Pointer, typename Translator>
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struct element_indexable_type<
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rtree::ptr_pair<First, Pointer>,
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Translator
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>
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{
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typedef First type;
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};
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// is leaf element
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template <typename Element>
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struct is_leaf_element
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{
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static const bool value = true;
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};
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template <typename First, typename Pointer>
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struct is_leaf_element< rtree::ptr_pair<First, Pointer> >
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{
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static const bool value = false;
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};
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// element's indexable getter
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template <typename Element, typename Translator>
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typename result_type<Translator>::type
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element_indexable(Element const& el, Translator const& tr)
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{
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return tr(el);
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}
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template <typename First, typename Pointer, typename Translator>
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First const&
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element_indexable(rtree::ptr_pair<First, Pointer> const& el, Translator const& /*tr*/)
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{
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return el.first;
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}
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// nodes elements
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template <typename Node>
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struct elements_type
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{
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typedef typename Node::elements_type type;
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};
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template <typename Node>
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inline typename elements_type<Node>::type &
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elements(Node & n)
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{
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return n.elements;
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}
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template <typename Node>
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inline typename elements_type<Node>::type const&
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elements(Node const& n)
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{
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return n.elements;
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}
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// elements derived type
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template <typename Elements, typename NewValue>
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struct container_from_elements_type
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{
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typedef boost::container::vector<NewValue> type;
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};
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template <typename OldValue, size_t N, typename NewValue>
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struct container_from_elements_type<detail::varray<OldValue, N>, NewValue>
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{
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typedef detail::varray<NewValue, N> type;
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};
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}} // namespace detail::rtree
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}}} // namespace boost::geometry::index
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#endif // BOOST_GEOMETRY_INDEX_DETAIL_RTREE_NODE_NODE_ELEMENTS_HPP
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