ceph/src/boost/libs/geometry/include/boost/geometry/algorithms/detail/expand/box.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 // Copyright (c) 2014-2015 Samuel Debionne, Grenoble, France.
   7
   8 // This file was modified by Oracle on 2015.
   9 // Modifications copyright (c) 2015, Oracle and/or its affiliates.
  10
  11 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
  12
  13 // Distributed under the Boost Software License, Version 1.0.
  14 // (See accompanying file LICENSE_1_0.txt or copy at
  15 // http://www.boost.org/LICENSE_1_0.txt)
  16
  17 #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_EXPAND_BOX_HPP
  18 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_EXPAND_BOX_HPP
  19
  20 #include <cstddef>
  21 #include <algorithm>
  22
  23 #include <boost/mpl/assert.hpp>
  24 #include <boost/type_traits/is_same.hpp>
  25
  26 #include <boost/geometry/core/coordinate_dimension.hpp>
  27 #include <boost/geometry/core/tags.hpp>
  28
  29 #include <boost/geometry/algorithms/detail/envelope/box.hpp>
  30 #include <boost/geometry/algorithms/detail/envelope/range_of_boxes.hpp>
  31
  32 #include <boost/geometry/algorithms/detail/expand/indexed.hpp>
  33
  34 #include <boost/geometry/algorithms/dispatch/expand.hpp>
  35
  36
  37 namespace boost { namespace geometry
  38 {
  39
  40 #ifndef DOXYGEN_NO_DETAIL
  41 namespace detail { namespace expand
  42 {
  43
  44
  45 struct box_on_spheroid
  46 {
  47     template <typename BoxOut, typename BoxIn>
  48     static inline void apply(BoxOut& box_out, BoxIn const& box_in)
  49     {
  50         // normalize both boxes and convert box-in to be of type of box-out
  51         BoxOut mbrs[2];
  52         detail::envelope::envelope_box_on_spheroid::apply(box_in, mbrs[0]);
  53         detail::envelope::envelope_box_on_spheroid::apply(box_out, mbrs[1]);
  54
  55         // compute the envelope of the two boxes
  56         detail::envelope::envelope_range_of_boxes::apply(mbrs, box_out);
  57     }
  58 };
  59
  60
  61 }} // namespace detail::expand
  62 #endif // DOXYGEN_NO_DETAIL
  63
  64 #ifndef DOXYGEN_NO_DISPATCH
  65 namespace dispatch
  66 {
  67
  68
  69 // Box + box -> new box containing two input boxes
  70 template
  71 <
  72     typename BoxOut, typename BoxIn,
  73     typename StrategyLess, typename StrategyGreater,
  74     typename CSTagOut, typename CSTag
  75 >
  76 struct expand
  77     <
  78         BoxOut, BoxIn,
  79         StrategyLess, StrategyGreater,
  80         box_tag, box_tag,
  81         CSTagOut, CSTag
  82     > : detail::expand::expand_indexed
  83         <
  84             0, dimension<BoxIn>::value, StrategyLess, StrategyGreater
  85         >
  86 {
  87     BOOST_MPL_ASSERT_MSG((boost::is_same<CSTagOut, CSTag>::value),
  88                          COORDINATE_SYSTEMS_MUST_BE_THE_SAME,
  89                          (types<CSTagOut, CSTag>()));
  90 };
  91
  92 template
  93 <
  94     typename BoxOut, typename BoxIn,
  95     typename StrategyLess, typename StrategyGreater
  96 >
  97 struct expand
  98     <
  99         BoxOut, BoxIn,
 100         StrategyLess, StrategyGreater,
 101         box_tag, box_tag,
 102         spherical_equatorial_tag, spherical_equatorial_tag
 103     > : detail::expand::box_on_spheroid
 104 {};
 105
 106 template
 107 <
 108     typename BoxOut, typename BoxIn,
 109     typename StrategyLess, typename StrategyGreater
 110 >
 111 struct expand
 112     <
 113         BoxOut, BoxIn,
 114         StrategyLess, StrategyGreater,
 115         box_tag, box_tag,
 116         geographic_tag, geographic_tag
 117     > : detail::expand::box_on_spheroid
 118 {};
 119
 120
 121 } // namespace dispatch
 122 #endif // DOXYGEN_NO_DISPATCH
 123
 124 }} // namespace boost::geometry
 125
 126 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_EXPAND_INDEXED_HPP