num_geometries.hpp 1.3 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253
  1. // Boost.Geometry (aka GGL, Generic Geometry Library)
  2. // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
  3. // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
  4. // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
  5. // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
  6. // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
  7. // Use, modification and distribution is subject to the Boost Software License,
  8. // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  9. // http://www.boost.org/LICENSE_1_0.txt)
  10. #ifndef BOOST_GEOMETRY_MULTI_ALGORITHMS_NUM_GEOMETRIES_HPP
  11. #define BOOST_GEOMETRY_MULTI_ALGORITHMS_NUM_GEOMETRIES_HPP
  12. #include <cstddef>
  13. #include <boost/range.hpp>
  14. #include <boost/geometry/algorithms/num_geometries.hpp>
  15. #include <boost/geometry/multi/core/tags.hpp>
  16. #include <boost/geometry/multi/geometries/concepts/check.hpp>
  17. namespace boost { namespace geometry
  18. {
  19. #ifndef DOXYGEN_NO_DISPATCH
  20. namespace dispatch
  21. {
  22. template <typename MultiGeometry>
  23. struct num_geometries<MultiGeometry, multi_tag>
  24. {
  25. static inline std::size_t apply(MultiGeometry const& multi_geometry)
  26. {
  27. return boost::size(multi_geometry);
  28. }
  29. };
  30. } // namespace dispatch
  31. #endif
  32. }} // namespace boost::geometry
  33. #endif // BOOST_GEOMETRY_MULTI_ALGORITHMS_NUM_GEOMETRIES_HPP