91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
// Boost.Geometry Index
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//
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// n-dimensional bounds
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//
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// Copyright (c) 2011-2014 Adam Wulkiewicz, Lodz, Poland.
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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_ALGORITHMS_BOUNDS_HPP
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#define BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_BOUNDS_HPP
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#include <boost/geometry/index/detail/bounded_view.hpp>
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namespace boost { namespace geometry { namespace index { namespace detail {
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namespace dispatch {
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template <typename Geometry,
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typename Bounds,
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typename TagGeometry = typename geometry::tag<Geometry>::type,
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typename TagBounds = typename geometry::tag<Bounds>::type>
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struct bounds
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{
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static inline void apply(Geometry const& g, Bounds & b)
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{
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geometry::convert(g, b);
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}
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};
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template <typename Geometry, typename Bounds>
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struct bounds<Geometry, Bounds, segment_tag, box_tag>
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{
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static inline void apply(Geometry const& g, Bounds & b)
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{
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index::detail::bounded_view<Geometry, Bounds> v(g);
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geometry::convert(v, b);
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}
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};
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} // namespace dispatch
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template <typename Geometry, typename Bounds>
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inline void bounds(Geometry const& g, Bounds & b)
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{
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concepts::check_concepts_and_equal_dimensions<Geometry const, Bounds>();
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dispatch::bounds<Geometry, Bounds>::apply(g, b);
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}
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namespace dispatch {
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template <typename Geometry,
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typename TagGeometry = typename geometry::tag<Geometry>::type>
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struct return_ref_or_bounds
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{
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typedef Geometry const& result_type;
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static inline result_type apply(Geometry const& g)
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{
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return g;
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}
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};
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template <typename Geometry>
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struct return_ref_or_bounds<Geometry, segment_tag>
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{
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typedef typename point_type<Geometry>::type point_type;
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typedef geometry::model::box<point_type> bounds_type;
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typedef index::detail::bounded_view<Geometry, bounds_type> result_type;
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static inline result_type apply(Geometry const& g)
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{
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return result_type(g);
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}
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};
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} // namespace dispatch
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template <typename Geometry>
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inline
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typename dispatch::return_ref_or_bounds<Geometry>::result_type
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return_ref_or_bounds(Geometry const& g)
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{
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return dispatch::return_ref_or_bounds<Geometry>::apply(g);
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}
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}}}} // namespace boost::geometry::index::detail
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#endif // BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_BOUNDS_HPP
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