ceph/src/boost/libs/geometry/include/boost/geometry/algorithms/detail/interior_iterator.hpp

   1 // Boost.Geometry
   2
   3 // Copyright (c) 2014 Adam Wulkiewicz, Lodz, Poland.
   4
   5 // Use, modification and distribution is subject to the Boost Software License,
   6 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERIOR_ITERATOR_HPP
  10 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERIOR_ITERATOR_HPP
  11
  12 #include <boost/range/iterator.hpp>
  13 #include <boost/range/value_type.hpp>
  14
  15 #include <boost/geometry/core/interior_type.hpp>
  16
  17 namespace boost { namespace geometry
  18 {
  19
  20 #ifndef DOXYGEN_NO_DETAIL
  21 namespace detail
  22 {
  23
  24 /*!
  25 \brief Structure defining the type of interior rings iterator
  26 \note If the Geometry is const, const iterator is defined.
  27 \tparam Geometry \tparam_geometry
  28  */
  29 template <typename Geometry>
  30 struct interior_iterator
  31 {
  32     typedef typename boost::range_iterator
  33         <
  34             typename geometry::interior_type<Geometry>::type
  35         >::type type;
  36 };
  37
  38 template <typename BaseT, typename T>
  39 struct copy_const
  40 {
  41     typedef T type;
  42 };
  43
  44 template <typename BaseT, typename T>
  45 struct copy_const<BaseT const, T>
  46 {
  47     typedef T const type;
  48 };
  49
  50 template <typename Geometry>
  51 struct interior_ring_iterator
  52 {
  53     typedef typename boost::range_iterator
  54         <
  55             typename copy_const
  56                 <
  57                     typename geometry::interior_type<Geometry>::type,
  58                     typename boost::range_value
  59                         <
  60                             typename geometry::interior_type<Geometry>::type
  61                         >::type
  62                 >::type
  63         >::type type;
  64 };
  65
  66 } // namespace detail
  67 #endif // DOXYGEN_NO_DETAIL
  68
  69 }} // namespace boost::geometry
  70
  71 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_INTERIOR_ITERATOR_HPP