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// Boost.Geometry Index
//
// boxes union/intersection area/volume
//
// Copyright (c) 2011-2016 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_INTERSECTION_CONTENT_HPP
#define BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_INTERSECTION_CONTENT_HPP
#include <boost/geometry/algorithms/intersection.hpp>
#include <boost/geometry/strategies/intersection_strategies.hpp>
#include <boost/geometry/index/detail/algorithms/content.hpp>
namespace boost { namespace geometry { namespace index { namespace detail {
/**
* \brief Compute the area of the intersection of b1 and b2
*/
template <typename Box>
inline typename default_content_result<Box>::type intersection_content(Box const& box1, Box const& box2)
{
if ( geometry::intersects(box1, box2) )
{
Box box_intersection;
if ( geometry::intersection(box1, box2, box_intersection) )
return detail::content(box_intersection);
}
return 0;
}
}}}} // namespace boost::geometry::index::detail
#endif // BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_INTERSECTION_CONTENT_HPP
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