strategies/expand/cartesian.hpp

0001 // Boost.Geometry
0002
0003 // Copyright (c) 2020, Oracle and/or its affiliates.
0004
0005 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
0006
0007 // Licensed under the Boost Software License version 1.0.
0008 // http://www.boost.org/users/license.html
0009
0010 #ifndef BOOST_GEOMETRY_STRATEGIES_EXPAND_CARTESIAN_HPP
0011 #define BOOST_GEOMETRY_STRATEGIES_EXPAND_CARTESIAN_HPP
0012
0013
0014 #include <type_traits>
0015
0016 #include <boost/geometry/strategy/cartesian/expand_box.hpp>
0017 #include <boost/geometry/strategy/cartesian/expand_point.hpp>
0018 #include <boost/geometry/strategy/cartesian/expand_segment.hpp>
0019
0020 #include <boost/geometry/strategies/detail.hpp>
0021 #include <boost/geometry/strategies/expand/services.hpp>
0022
0023
0024 namespace boost { namespace geometry
0025 {
0026
0027
0028 namespace strategies { namespace expand
0029 {
0030
0031
0032 template <typename CalculationType = void>
0033 struct cartesian
0034     : strategies::detail::cartesian_base
0035 {
0036     template <typename Box, typename Geometry>
0037     static auto expand(Box const&, Geometry const&,
0038                        typename util::enable_if_point_t<Geometry> * = nullptr)
0039     {
0040         return strategy::expand::cartesian_point();
0041     }
0042
0043     template <typename Box, typename Geometry>
0044     static auto expand(Box const&, Geometry const&,
0045                        typename util::enable_if_box_t<Geometry> * = nullptr)
0046     {
0047         return strategy::expand::cartesian_box();
0048     }
0049
0050     template <typename Box, typename Geometry>
0051     static auto expand(Box const&, Geometry const&,
0052                        typename util::enable_if_segment_t<Geometry> * = nullptr)
0053     {
0054         return strategy::expand::cartesian_segment();
0055     }
0056 };
0057
0058
0059 namespace services
0060 {
0061
0062 template <typename Box, typename Geometry>
0063 struct default_strategy<Box, Geometry, cartesian_tag>
0064 {
0065     using type = strategies::expand::cartesian<>;
0066 };
0067
0068
0069 template <>
0070 struct strategy_converter<strategy::expand::cartesian_point>
0071 {
0072     static auto get(strategy::expand::cartesian_point const& )
0073     {
0074         return strategies::expand::cartesian<>();
0075     }
0076 };
0077
0078 template <>
0079 struct strategy_converter<strategy::expand::cartesian_box>
0080 {
0081     static auto get(strategy::expand::cartesian_box const& )
0082     {
0083         return strategies::expand::cartesian<>();
0084     }
0085 };
0086
0087 template <>
0088 struct strategy_converter<strategy::expand::cartesian_segment>
0089 {
0090     static auto get(strategy::expand::cartesian_segment const&)
0091     {
0092         return strategies::expand::cartesian<>();
0093     }
0094 };
0095
0096
0097 } // namespace services
0098
0099 }} // namespace strategies::envelope
0100
0101 }} // namespace boost::geometry
0102
0103 #endif // BOOST_GEOMETRY_STRATEGIES_EXPAND_CARTESIAN_HPP