ceph/src/boost/boost/geometry/algorithms/detail/envelope/segment.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
   4 // Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
   5 // Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
   6
   7 // This file was modified by Oracle on 2015-2020.
   8 // Modifications copyright (c) 2015-2020, Oracle and/or its affiliates.
   9
  10 // Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
  11 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
  12 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  13
  14 // Distributed under the Boost Software License, Version 1.0.
  15 // (See accompanying file LICENSE_1_0.txt or copy at
  16 // http://www.boost.org/LICENSE_1_0.txt)
  17
  18 #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_SEGMENT_HPP
  19 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_SEGMENT_HPP
  20
  21 #include <cstddef>
  22
  23 #include <boost/geometry/core/tags.hpp>
  24
  25 #include <boost/geometry/algorithms/detail/assign_indexed_point.hpp>
  26 #include <boost/geometry/algorithms/dispatch/envelope.hpp>
  27
  28 // TEMP
  29 #include <boost/geometry/strategies/detail.hpp>
  30
  31 namespace boost { namespace geometry
  32 {
  33
  34 #ifndef DOXYGEN_NO_DETAIL
  35 namespace detail { namespace envelope
  36 {
  37
  38 // TEMP
  39 template
  40 <
  41     typename Strategy,
  42     bool IsUmbrella = strategies::detail::is_umbrella_strategy<Strategy>::value
  43 >
  44 struct envelope_segment_call_strategy
  45 {
  46     template <typename Point, typename Segment, typename Box>
  47     static inline void apply(Point const& p1, Point const& p2,
  48                              Segment const& segment, Box& mbr,
  49                              Strategy const& strategy)
  50     {
  51         strategy.envelope(segment, mbr).apply(p1, p2, mbr);
  52     }
  53 };
  54
  55 template <typename Strategy>
  56 struct envelope_segment_call_strategy<Strategy, false>
  57 {
  58     template <typename Point, typename Segment, typename Box>
  59     static inline void apply(Point const& p1, Point const& p2,
  60                              Segment const&, Box& mbr,
  61                              Strategy const& strategy)
  62     {
  63         strategy.apply(p1, p2, mbr);
  64     }
  65 };
  66
  67 struct envelope_segment
  68 {
  69     template <typename Segment, typename Box, typename Strategy>
  70     static inline void apply(Segment const& segment, Box& mbr,
  71                              Strategy const& strategy)
  72     {
  73         typename point_type<Segment>::type p[2];
  74         detail::assign_point_from_index<0>(segment, p[0]);
  75         detail::assign_point_from_index<1>(segment, p[1]);
  76
  77         // TEMP - expand calls this and Umbrella strategies are not yet supported there
  78         envelope_segment_call_strategy<Strategy>::apply(p[0], p[1], segment, mbr, strategy);
  79     }
  80 };
  81
  82 }} // namespace detail::envelope
  83 #endif // DOXYGEN_NO_DETAIL
  84
  85
  86 #ifndef DOXYGEN_NO_DISPATCH
  87 namespace dispatch
  88 {
  89
  90
  91 template <typename Segment>
  92 struct envelope<Segment, segment_tag>
  93 {
  94     template <typename Box, typename Strategy>
  95     static inline void apply(Segment const& segment,
  96                              Box& mbr,
  97                              Strategy const& strategy)
  98     {
  99         detail::envelope::envelope_segment
 100             /*<
 101                dimension<Segment>::value
 102             >*/::apply(segment, mbr, strategy);
 103     }
 104 };
 105
 106 } // namespace dispatch
 107 #endif // DOXYGEN_NO_DISPATCH
 108
 109 }} // namespace boost::geometry
 110
 111 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_SEGMENT_HPP