projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
| 2 | ||
| 3 | // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. | |
| 4 | // Copyright (c) 2008-2012 Bruno Lalande, Paris, France. | |
| 5 | // Copyright (c) 2009-2012 Mateusz Loskot, London, UK. | |
| 6 | ||
| 7 | // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library | |
| 8 | // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. | |
| 9 | ||
| 10 | // Use, modification and distribution is subject to the Boost Software License, | |
| 11 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
| 12 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 13 | ||
| 14 | #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_AS_RANGE_HPP | |
| 15 | #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_AS_RANGE_HPP | |
| 16 | ||
| 17 | ||
| 18 | #include <boost/geometry/core/exterior_ring.hpp> | |
| 19 | #include <boost/geometry/core/tag.hpp> | |
| 20 | #include <boost/geometry/core/tags.hpp> | |
| 21 | ||
| 22 | #include <boost/geometry/util/add_const_if_c.hpp> | |
| 23 | ||
| 24 | ||
| 25 | namespace boost { namespace geometry | |
| 26 | { | |
| 27 | ||
| 28 | ||
| 29 | #ifndef DOXYGEN_NO_DISPATCH | |
| 30 | namespace dispatch | |
| 31 | { | |
| 32 | ||
| 33 | ||
| 34 | template <typename GeometryTag, typename Geometry, typename Range, bool IsConst> | |
| 35 | struct as_range | |
| 36 | { | |
| 37 | static inline typename add_const_if_c<IsConst, Range>::type& get( | |
| 38 | typename add_const_if_c<IsConst, Geometry>::type& input) | |
| 39 | { | |
| 40 | return input; | |
| 41 | } | |
| 42 | }; | |
| 43 | ||
| 44 | ||
| 45 | template <typename Geometry, typename Range, bool IsConst> | |
| 46 | struct as_range<polygon_tag, Geometry, Range, IsConst> | |
| 47 | { | |
| 48 | static inline typename add_const_if_c<IsConst, Range>::type& get( | |
| 49 | typename add_const_if_c<IsConst, Geometry>::type& input) | |
| 50 | { | |
| 51 | return exterior_ring(input); | |
| 52 | } | |
| 53 | }; | |
| 54 | ||
| 55 | ||
| 56 | } // namespace dispatch | |
| 57 | #endif // DOXYGEN_NO_DISPATCH | |
| 58 | ||
| 59 | // Will probably be replaced by the more generic "view_as", therefore in detail | |
| 60 | namespace detail | |
| 61 | { | |
| 62 | ||
| 63 | /*! | |
| 64 | \brief Function getting either the range (ring, linestring) itself | |
| 65 | or the outer ring (polygon) | |
| 66 | \details Utility to handle polygon's outer ring as a range | |
| 67 | \ingroup utility | |
| 68 | */ | |
| 69 | template <typename Range, typename Geometry> | |
| 70 | inline Range& as_range(Geometry& input) | |
| 71 | { | |
| 72 | return dispatch::as_range | |
| 73 | < | |
| 74 | typename tag<Geometry>::type, | |
| 75 | Geometry, | |
| 76 | Range, | |
| 77 | false | |
| 78 | >::get(input); | |
| 79 | } | |
| 80 | ||
| 81 | ||
| 82 | /*! | |
| 83 | \brief Function getting either the range (ring, linestring) itself | |
| 84 | or the outer ring (polygon), const version | |
| 85 | \details Utility to handle polygon's outer ring as a range | |
| 86 | \ingroup utility | |
| 87 | */ | |
| 88 | template <typename Range, typename Geometry> | |
| 89 | inline Range const& as_range(Geometry const& input) | |
| 90 | { | |
| 91 | return dispatch::as_range | |
| 92 | < | |
| 93 | typename tag<Geometry>::type, | |
| 94 | Geometry, | |
| 95 | Range, | |
| 96 | true | |
| 97 | >::get(input); | |
| 98 | } | |
| 99 | ||
| 100 | } | |
| 101 | ||
| 102 | }} // namespace boost::geometry | |
| 103 | ||
| 104 | ||
| 105 | #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_AS_RANGE_HPP |