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Diffstat (limited to 'boost/geometry/algorithms/detail/distance/default_strategies.hpp')
-rw-r--r-- | boost/geometry/algorithms/detail/distance/default_strategies.hpp | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/boost/geometry/algorithms/detail/distance/default_strategies.hpp b/boost/geometry/algorithms/detail/distance/default_strategies.hpp new file mode 100644 index 0000000000..a01ace2b58 --- /dev/null +++ b/boost/geometry/algorithms/detail/distance/default_strategies.hpp @@ -0,0 +1,137 @@ +// Boost.Geometry (aka GGL, Generic Geometry Library) + +// Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands. +// Copyright (c) 2008-2014 Bruno Lalande, Paris, France. +// Copyright (c) 2009-2014 Mateusz Loskot, London, UK. +// Copyright (c) 2013-2014 Adam Wulkiewicz, Lodz, Poland. + +// This file was modified by Oracle on 2014. +// Modifications copyright (c) 2014, Oracle and/or its affiliates. + +// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle + +// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library +// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. + +// 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_ALGORITHMS_DETAIL_DISTANCE_DEFAULT_STRATEGIES_HPP +#define BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISTANCE_DEFAULT_STRATEGIES_HPP + +#include <boost/geometry/core/cs.hpp> +#include <boost/geometry/core/tag.hpp> +#include <boost/geometry/core/tag_cast.hpp> +#include <boost/geometry/core/tags.hpp> +#include <boost/geometry/core/point_type.hpp> +#include <boost/geometry/core/reverse_dispatch.hpp> + +#include <boost/geometry/strategies/distance.hpp> + + +namespace boost { namespace geometry +{ + +#ifndef DOXYGEN_NO_DETAIL +namespace detail { namespace distance +{ + + + +// Helper metafunction for default strategy retrieval +template +< + typename Geometry1, + typename Geometry2 = Geometry1, + typename Tag1 = typename tag_cast + < + typename tag<Geometry1>::type, pointlike_tag + >::type, + typename Tag2 = typename tag_cast + < + typename tag<Geometry2>::type, pointlike_tag + >::type, + bool Reverse = geometry::reverse_dispatch<Geometry1, Geometry2>::type::value +> +struct default_strategy + : strategy::distance::services::default_strategy + < + point_tag, segment_tag, + typename point_type<Geometry1>::type, + typename point_type<Geometry2>::type + > +{}; + +template +< + typename Geometry1, + typename Geometry2, + typename Tag1, + typename Tag2 +> +struct default_strategy<Geometry1, Geometry2, Tag1, Tag2, true> + : default_strategy<Geometry2, Geometry1, Tag2, Tag1, false> +{}; + + +template <typename Pointlike1, typename Pointlike2> +struct default_strategy + < + Pointlike1, Pointlike2, + pointlike_tag, pointlike_tag, false + > : strategy::distance::services::default_strategy + < + point_tag, point_tag, + typename point_type<Pointlike1>::type, + typename point_type<Pointlike2>::type + > +{}; + + +template <typename Pointlike, typename Box> +struct default_strategy<Pointlike, Box, pointlike_tag, box_tag, false> + : strategy::distance::services::default_strategy + < + point_tag, box_tag, + typename point_type<Pointlike>::type, + typename point_type<Box>::type + > +{}; + + +template <typename Box1, typename Box2> +struct default_strategy<Box1, Box2, box_tag, box_tag, false> + : strategy::distance::services::default_strategy + < + box_tag, box_tag, + typename point_type<Box1>::type, + typename point_type<Box2>::type + > +{}; + + + +// Helper metafunction for default point-segment strategy retrieval +template <typename Geometry1, typename Geometry2, typename Strategy> +struct default_ps_strategy + : strategy::distance::services::default_strategy + < + point_tag, segment_tag, + typename point_type<Geometry1>::type, + typename point_type<Geometry2>::type, + typename cs_tag<typename point_type<Geometry1>::type>::type, + typename cs_tag<typename point_type<Geometry2>::type>::type, + Strategy + > +{}; + + + +}} // namespace detail::distance +#endif // DOXYGEN_NO_DETAIL + +}} // namespace boost::geometry + + +#endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISTANCE_DEFAULT_STRATEGIES_HPP |