| 1 | // Boost.Geometry Index |
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| 2 | // |
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| 3 | // boxes union/intersection area/volume |
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| 4 | // |
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| 5 | // Copyright (c) 2011-2014 Adam Wulkiewicz, Lodz, Poland. |
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| 6 | // |
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| 7 | // Use, modification and distribution is subject to the Boost Software License, |
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| 8 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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| 9 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 10 | |
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| 11 | #ifndef BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_INTERSECTION_CONTENT_HPP |
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| 12 | #define BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_INTERSECTION_CONTENT_HPP |
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| 13 | |
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| 14 | #include <boost/geometry/algorithms/intersection.hpp> |
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| 15 | #include <boost/geometry/strategies/intersection.hpp> |
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| 16 | #include <boost/geometry/index/detail/algorithms/content.hpp> |
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| 17 | |
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| 18 | namespace boost { namespace geometry { namespace index { namespace detail { |
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| 19 | |
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| 20 | /** |
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| 21 | * \brief Compute the area of the intersection of b1 and b2 |
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| 22 | */ |
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| 23 | template <typename Box> |
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| 24 | inline typename default_content_result<Box>::type intersection_content(Box const& box1, Box const& box2) |
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| 25 | { |
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| 26 | if ( geometry::intersects(box1, box2) ) |
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| 27 | { |
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| 28 | Box box_intersection; |
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| 29 | if ( geometry::intersection(box1, box2, box_intersection) ) |
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| 30 | return detail::content(box_intersection); |
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| 31 | } |
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| 32 | return 0; |
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| 33 | } |
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| 34 | |
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| 35 | }}}} // namespace boost::geometry::index::detail |
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| 36 | |
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| 37 | #endif // BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_INTERSECTION_CONTENT_HPP |
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| 38 | |
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