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_SEGMENT_HPP 18 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_EXPAND_SEGMENT_HPP 19 20 #include <boost/mpl/assert.hpp> 21 #include <boost/type_traits/is_same.hpp> 22 23 #include <boost/geometry/core/coordinate_dimension.hpp> 24 #include <boost/geometry/core/tags.hpp> 25 26 #include <boost/geometry/algorithms/detail/envelope/box.hpp> 27 #include <boost/geometry/algorithms/detail/envelope/range_of_boxes.hpp> 28 #include <boost/geometry/algorithms/detail/envelope/segment.hpp> 29 30 #include <boost/geometry/algorithms/detail/expand/indexed.hpp> 31 32 #include <boost/geometry/algorithms/dispatch/expand.hpp> 33 34 35 namespace boost { namespace geometry 36 { 37 38 #ifndef DOXYGEN_NO_DETAIL 39 namespace detail { namespace expand 40 { 41 42 43 struct segment_on_sphere 44 { 45 template <typename Box, typename Segment> applyboost::geometry::detail::expand::segment_on_sphere46 static inline void apply(Box& box, Segment const& segment) 47 { 48 Box mbrs[2]; 49 50 // compute the envelope of the segment 51 detail::envelope::envelope_segment_on_sphere 52 < 53 dimension<Segment>::value 54 >::apply(segment, mbrs[0]); 55 56 // normalize the box 57 detail::envelope::envelope_box_on_spheroid::apply(box, mbrs[1]); 58 59 // compute the envelope of the two boxes 60 detail::envelope::envelope_range_of_boxes::apply(mbrs, box); 61 } 62 }; 63 64 65 }} // namespace detail::expand 66 #endif // DOXYGEN_NO_DETAIL 67 68 #ifndef DOXYGEN_NO_DISPATCH 69 namespace dispatch 70 { 71 72 73 template 74 < 75 typename Box, typename Segment, 76 typename StrategyLess, typename StrategyGreater, 77 typename CSTagOut, typename CSTag 78 > 79 struct expand 80 < 81 Box, Segment, 82 StrategyLess, StrategyGreater, 83 box_tag, segment_tag, 84 CSTagOut, CSTag 85 > : detail::expand::expand_indexed 86 < 87 0, dimension<Segment>::value, StrategyLess, StrategyGreater 88 > 89 { 90 BOOST_MPL_ASSERT_MSG((boost::is_same<CSTagOut, CSTag>::value), 91 COORDINATE_SYSTEMS_MUST_BE_THE_SAME, 92 (types<CSTagOut, CSTag>())); 93 }; 94 95 template 96 < 97 typename Box, typename Segment, 98 typename StrategyLess, typename StrategyGreater 99 > 100 struct expand 101 < 102 Box, Segment, 103 StrategyLess, StrategyGreater, 104 box_tag, segment_tag, 105 spherical_equatorial_tag, spherical_equatorial_tag 106 > : detail::expand::segment_on_sphere 107 {}; 108 109 110 } // namespace dispatch 111 #endif // DOXYGEN_NO_DISPATCH 112 113 }} // namespace boost::geometry 114 115 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_EXPAND_SEGMENT_HPP 116