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
  34     : strategies::detail::cartesian_base
  35 {
  36     template <typename Box, typename Geometry>
  37     static auto expand(Box const&, Geometry const&,
  38                        typename util::enable_if_point_t<Geometry> * = nullptr)
  39     {
  40         return strategy::expand::cartesian_point();
  41     }
  42
  43     template <typename Box, typename Geometry>
  44     static auto expand(Box const&, Geometry const&,
  45                        typename util::enable_if_box_t<Geometry> * = nullptr)
  46     {
  47         return strategy::expand::cartesian_box();
  48     }
  49
  50     template <typename Box, typename Geometry>
  51     static auto expand(Box const&, Geometry const&,
  52                        typename util::enable_if_segment_t<Geometry> * = nullptr)
  53     {
  54         return strategy::expand::cartesian_segment();
  55     }
  56 };
  57
  58
  59 namespace services
  60 {
  61
  62 template <typename Box, typename Geometry>
  63 struct default_strategy<Box, Geometry, cartesian_tag>
  64 {
  65     using type = strategies::expand::cartesian<>;
  66 };
  67
  68
  69 template <>
  70 struct strategy_converter<strategy::expand::cartesian_point>
  71 {
  72     static auto get(strategy::expand::cartesian_point const& )
  73     {
  74         return strategies::expand::cartesian<>();
  75     }
  76 };
  77
  78 template <>
  79 struct strategy_converter<strategy::expand::cartesian_box>
  80 {
  81     static auto get(strategy::expand::cartesian_box const& )
  82     {
  83         return strategies::expand::cartesian<>();
  84     }
  85 };
  86
  87 template <>
  88 struct strategy_converter<strategy::expand::cartesian_segment>
  89 {
  90     static auto get(strategy::expand::cartesian_segment const&)
  91     {
  92         return strategies::expand::cartesian<>();
  93     }
  94 };
  95
  96
  97 } // namespace services
  98
  99 }} // namespace strategies::envelope
 100
 101 }} // namespace boost::geometry
 102
 103 #endif // BOOST_GEOMETRY_STRATEGIES_EXPAND_CARTESIAN_HPP