not.hpp 1.4 KB

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  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_ALGORITHMS_DETAIL_NOT_HPP
  11. #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_NOT_HPP
  12. namespace boost { namespace geometry
  13. {
  14. #ifndef DOXYGEN_NO_DETAIL
  15. namespace detail
  16. {
  17. /*!
  18. \brief Structure negating the result of specified policy
  19. \tparam Geometry1 \tparam_geometry
  20. \tparam Geometry2 \tparam_geometry
  21. \tparam Policy
  22. \param geometry1 \param_geometry
  23. \param geometry2 \param_geometry
  24. \return Negation of the result of the policy
  25. */
  26. template <typename Geometry1, typename Geometry2, typename Policy>
  27. struct not_
  28. {
  29. static inline bool apply(Geometry1 const &geometry1, Geometry2 const& geometry2)
  30. {
  31. return ! Policy::apply(geometry1, geometry2);
  32. }
  33. };
  34. } // namespace detail
  35. #endif // DOXYGEN_NO_DETAIL
  36. }} // namespace boost::geometry
  37. #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_NOT_HPP