ceph/src/boost/libs/geometry/include/boost/geometry/algorithms/detail/distance/iterator_selector.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2014, Oracle and/or its affiliates.
   4
   5 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
   6
   7 // Licensed under the Boost Software License version 1.0.
   8 // http://www.boost.org/users/license.html
   9
  10 #ifndef BOOST_GEOMETRY_ALGORITHS_DETAIL_DISTANCE_ITERATOR_SELECTOR_HPP
  11 #define BOOST_GEOMETRY_ALGORITHS_DETAIL_DISTANCE_ITERATOR_SELECTOR_HPP
  12
  13 #include <boost/geometry/core/tag.hpp>
  14 #include <boost/geometry/core/tags.hpp>
  15
  16 #include <boost/geometry/iterators/point_iterator.hpp>
  17 #include <boost/geometry/iterators/segment_iterator.hpp>
  18
  19
  20 namespace boost { namespace geometry
  21 {
  22
  23
  24 #ifndef DOXYGEN_NO_DETAIL
  25 namespace detail { namespace distance
  26 {
  27
  28
  29 // class to choose between point_iterator and segment_iterator
  30 template <typename Geometry, typename Tag = typename tag<Geometry>::type>
  31 struct iterator_selector
  32 {
  33     typedef geometry::segment_iterator<Geometry> iterator_type;
  34
  35     static inline iterator_type begin(Geometry& geometry)
  36     {
  37         return segments_begin(geometry);
  38     }
  39
  40     static inline iterator_type end(Geometry& geometry)
  41     {
  42         return segments_end(geometry);
  43     }
  44 };
  45
  46 template <typename MultiPoint>
  47 struct iterator_selector<MultiPoint, multi_point_tag>
  48 {
  49     typedef geometry::point_iterator<MultiPoint> iterator_type;
  50
  51     static inline iterator_type begin(MultiPoint& multipoint)
  52     {
  53         return points_begin(multipoint);
  54     }
  55
  56     static inline iterator_type end(MultiPoint& multipoint)
  57     {
  58         return points_end(multipoint);
  59     }
  60 };
  61
  62
  63 }} // namespace detail::distance
  64 #endif // DOXYGEN_NO_DETAIL
  65
  66
  67 }} // namespace boost::geometry
  68
  69
  70 #endif // BOOST_GEOMETRY_ALGORITHS_DETAIL_DISTANCE_ITERATOR_SELECTOR_HPP