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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. | |
8 | // Modifications copyright (c) 2015, Oracle and/or its affiliates. | |
9 | ||
10 | // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle | |
11 | ||
12 | // Distributed under the Boost Software License, Version 1.0. | |
13 | // (See accompanying file LICENSE_1_0.txt or copy at | |
14 | // http://www.boost.org/LICENSE_1_0.txt) | |
15 | ||
16 | #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_POINT_HPP | |
17 | #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_POINT_HPP | |
18 | ||
19 | #include <cstddef> | |
20 | ||
21 | #include <boost/geometry/core/access.hpp> | |
22 | #include <boost/geometry/core/cs.hpp> | |
23 | #include <boost/geometry/core/coordinate_dimension.hpp> | |
24 | #include <boost/geometry/core/coordinate_system.hpp> | |
25 | #include <boost/geometry/core/tags.hpp> | |
26 | ||
27 | #include <boost/geometry/views/detail/indexed_point_view.hpp> | |
28 | ||
29 | #include <boost/geometry/algorithms/detail/convert_point_to_point.hpp> | |
30 | #include <boost/geometry/algorithms/detail/normalize.hpp> | |
31 | ||
32 | #include <boost/geometry/algorithms/detail/envelope/transform_units.hpp> | |
33 | ||
34 | #include <boost/geometry/algorithms/dispatch/envelope.hpp> | |
35 | ||
36 | ||
37 | namespace boost { namespace geometry | |
38 | { | |
39 | ||
40 | #ifndef DOXYGEN_NO_DETAIL | |
41 | namespace detail { namespace envelope | |
42 | { | |
43 | ||
44 | ||
45 | template <std::size_t Dimension, std::size_t DimensionCount> | |
46 | struct envelope_one_point | |
47 | { | |
48 | template <std::size_t Index, typename Point, typename Box> | |
49 | static inline void apply(Point const& point, Box& mbr) | |
50 | { | |
51 | detail::indexed_point_view<Box, Index> box_corner(mbr); | |
52 | detail::conversion::point_to_point | |
53 | < | |
54 | Point, | |
55 | detail::indexed_point_view<Box, Index>, | |
56 | Dimension, | |
57 | DimensionCount | |
58 | >::apply(point, box_corner); | |
59 | } | |
60 | ||
61 | template <typename Point, typename Box> | |
62 | static inline void apply(Point const& point, Box& mbr) | |
63 | { | |
64 | apply<min_corner>(point, mbr); | |
65 | apply<max_corner>(point, mbr); | |
66 | } | |
67 | }; | |
68 | ||
69 | ||
70 | struct envelope_point_on_spheroid | |
71 | { | |
72 | template<typename Point, typename Box> | |
73 | static inline void apply(Point const& point, Box& mbr) | |
74 | { | |
75 | Point normalized_point = detail::return_normalized<Point>(point); | |
76 | ||
77 | typename point_type<Box>::type box_point; | |
78 | ||
79 | // transform units of input point to units of a box point | |
80 | transform_units(normalized_point, box_point); | |
81 | ||
82 | geometry::set<min_corner, 0>(mbr, geometry::get<0>(box_point)); | |
83 | geometry::set<min_corner, 1>(mbr, geometry::get<1>(box_point)); | |
84 | ||
85 | geometry::set<max_corner, 0>(mbr, geometry::get<0>(box_point)); | |
86 | geometry::set<max_corner, 1>(mbr, geometry::get<1>(box_point)); | |
87 | ||
88 | envelope_one_point | |
89 | < | |
90 | 2, dimension<Point>::value | |
91 | >::apply(normalized_point, mbr); | |
92 | } | |
93 | }; | |
94 | ||
95 | ||
96 | }} // namespace detail::envelope | |
97 | #endif // DOXYGEN_NO_DETAIL | |
98 | ||
99 | #ifndef DOXYGEN_NO_DISPATCH | |
100 | namespace dispatch | |
101 | { | |
102 | ||
103 | ||
104 | template <typename Point, typename CS_Tag> | |
105 | struct envelope<Point, point_tag, CS_Tag> | |
106 | : detail::envelope::envelope_one_point<0, dimension<Point>::value> | |
107 | {}; | |
108 | ||
109 | ||
110 | template <typename Point> | |
111 | struct envelope<Point, point_tag, spherical_equatorial_tag> | |
112 | : detail::envelope::envelope_point_on_spheroid | |
113 | {}; | |
114 | ||
115 | ||
116 | template <typename Point> | |
117 | struct envelope<Point, point_tag, geographic_tag> | |
118 | : detail::envelope::envelope_point_on_spheroid | |
119 | {}; | |
120 | ||
121 | ||
122 | } // namespace dispatch | |
123 | #endif // DOXYGEN_NO_DISPATCH | |
124 | ||
125 | }} // namespace boost::geometry | |
126 | ||
127 | #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_ENVELOPE_POINT_HPP |