ceph/src/boost/boost/geometry/strategies/expand/cartesian.hpp

   1 // Boost.Geometry
   2
   3 // Copyright (c) 2020, Oracle and/or its affiliates.
   4
   5 // Contributed and/or modified by Adam Wulkiewicz, 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_STRATEGIES_EXPAND_CARTESIAN_HPP
  11 #define BOOST_GEOMETRY_STRATEGIES_EXPAND_CARTESIAN_HPP
  12
  13
  14 #include <type_traits>
  15
  16 #include <boost/geometry/strategy/cartesian/expand_box.hpp>
  17 #include <boost/geometry/strategy/cartesian/expand_point.hpp>
  18 #include <boost/geometry/strategy/cartesian/expand_segment.hpp>
  19
  20 #include <boost/geometry/strategies/detail.hpp>
  21 #include <boost/geometry/strategies/expand/services.hpp>
  22
  23
  24 namespace boost { namespace geometry
  25 {
  26
  27
  28 namespace strategies { namespace expand
  29 {
  30
  31
  32 template <typename CalculationType = void>
  33 struct cartesian : strategies::detail::cartesian_base
  34 {
  35     template <typename Box, typename Geometry>
  36     static auto expand(Box const&, Geometry const&,
  37                        typename util::enable_if_point_t<Geometry> * = nullptr)
  38     {
  39         return strategy::expand::cartesian_point();
  40     }
  41
  42     template <typename Box, typename Geometry>
  43     static auto expand(Box const&, Geometry const&,
  44                        typename util::enable_if_box_t<Geometry> * = nullptr)
  45     {
  46         return strategy::expand::cartesian_box();
  47     }
  48
  49     template <typename Box, typename Geometry>
  50     static auto expand(Box const&, Geometry const&,
  51                        typename util::enable_if_segment_t<Geometry> * = nullptr)
  52     {
  53         return strategy::expand::cartesian_segment();
  54     }
  55 };
  56
  57
  58 namespace services
  59 {
  60
  61 template <typename Box, typename Geometry>
  62 struct default_strategy<Box, Geometry, cartesian_tag>
  63 {
  64     using type = strategies::expand::cartesian<>;
  65 };
  66
  67
  68 template <>
  69 struct strategy_converter<strategy::expand::cartesian_point>
  70 {
  71     static auto get(strategy::expand::cartesian_point const& )
  72     {
  73         return strategies::expand::cartesian<>();
  74     }
  75 };
  76
  77 template <>
  78 struct strategy_converter<strategy::expand::cartesian_box>
  79 {
  80     static auto get(strategy::expand::cartesian_box const& )
  81     {
  82         return strategies::expand::cartesian<>();
  83     }
  84 };
  85
  86 template <>
  87 struct strategy_converter<strategy::expand::cartesian_segment>
  88 {
  89     static auto get(strategy::expand::cartesian_segment const&)
  90     {
  91         return strategies::expand::cartesian<>();
  92     }
  93 };
  94
  95
  96 } // namespace services
  97
  98 }} // namespace strategies::envelope
  99
 100 }} // namespace boost::geometry
 101
 102 #endif // BOOST_GEOMETRY_STRATEGIES_EXPAND_CARTESIAN_HPP