ceph/src/boost/libs/geometry/include/boost/geometry/index/detail/algorithms/union_content.hpp

   1 // Boost.Geometry Index
   2 //
   3 // boxes union/sum area/volume
   4 //
   5 // Copyright (c) 2008 Federico J. Fernandez.
   6 // Copyright (c) 2011-2013 Adam Wulkiewicz, Lodz, Poland.
   7 //
   8 // Use, modification and distribution is subject to the Boost Software License,
   9 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  10 // http://www.boost.org/LICENSE_1_0.txt)
  11
  12 #ifndef BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_UNION_CONTENT_HPP
  13 #define BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_UNION_CONTENT_HPP
  14
  15 #include <boost/geometry/algorithms/expand.hpp>
  16 #include <boost/geometry/index/detail/algorithms/content.hpp>
  17
  18 namespace boost { namespace geometry { namespace index { namespace detail {
  19
  20 /**
  21  * \brief Compute the area of the union of b1 and b2
  22  */
  23 template <typename Box, typename Geometry>
  24 inline typename default_content_result<Box>::type union_content(Box const& b, Geometry const& g)
  25 {
  26     Box expanded_box(b);
  27     geometry::expand(expanded_box, g);
  28     return detail::content(expanded_box);
  29 }
  30
  31 }}}} // namespace boost::geometry::index::detail
  32
  33 #endif // BOOST_GEOMETRY_INDEX_DETAIL_ALGORITHMS_UNION_CONTENT_HPP