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1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
2 | ||
3 | // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. | |
4 | // Copyright (c) 2008-2012 Bruno Lalande, Paris, France. | |
5 | // Copyright (c) 2009-2012 Mateusz Loskot, London, UK. | |
6 | ||
7 | // This file was modified by Oracle on 2014-2021. | |
8 | // Modifications copyright (c) 2014-2021 Oracle and/or its affiliates. | |
9 | // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle | |
10 | ||
11 | // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library | |
12 | // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. | |
13 | ||
14 | // Use, modification and distribution is subject to the Boost Software License, | |
15 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
16 | // http://www.boost.org/LICENSE_1_0.txt) | |
17 | ||
18 | #ifndef BOOST_GEOMETRY_VIEWS_DETAIL_CLOSED_CLOCKWISE_VIEW_HPP | |
19 | #define BOOST_GEOMETRY_VIEWS_DETAIL_CLOSED_CLOCKWISE_VIEW_HPP | |
20 | ||
21 | #include <type_traits> | |
22 | ||
23 | #include <boost/range/begin.hpp> | |
24 | #include <boost/range/end.hpp> | |
25 | #include <boost/range/iterator.hpp> | |
26 | ||
27 | #include <boost/geometry/views/closeable_view.hpp> | |
28 | #include <boost/geometry/views/reversible_view.hpp> | |
29 | #include <boost/geometry/util/order_as_direction.hpp> | |
30 | #include <boost/geometry/util/type_traits_std.hpp> | |
31 | ||
32 | namespace boost { namespace geometry | |
33 | { | |
34 | ||
35 | #ifndef DOXYGEN_NO_DETAIL | |
36 | namespace detail | |
37 | { | |
38 | ||
39 | ||
40 | template | |
41 | < | |
42 | typename Range, | |
43 | closure_selector Closure = geometry::closure<Range>::value, | |
44 | order_selector Order = geometry::point_order<Range>::value | |
45 | > | |
46 | struct closed_clockwise_view | |
47 | { | |
48 | using closed_view = detail::closed_view<Range const, Closure>; | |
49 | using view = detail::clockwise_view<closed_view const, Order>; | |
50 | ||
51 | explicit inline closed_clockwise_view(Range const& r) | |
52 | : m_view(closed_view(r)) | |
53 | {} | |
54 | ||
55 | using iterator = typename boost::range_iterator<view const>::type; | |
56 | using const_iterator = typename boost::range_iterator<view const>::type; | |
57 | ||
58 | inline const_iterator begin() const { return boost::begin(m_view); } | |
59 | inline const_iterator end() const { return boost::end(m_view); } | |
60 | ||
61 | private: | |
62 | view m_view; | |
63 | }; | |
64 | ||
65 | ||
66 | } // namespace detail | |
67 | #endif // DOXYGEN_NO_DETAIL | |
68 | ||
69 | ||
70 | #ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS | |
71 | namespace traits | |
72 | { | |
73 | ||
74 | template <typename Range, closure_selector Closure, order_selector Order> | |
75 | struct tag<detail::closed_clockwise_view<Range, Closure, Order> > | |
76 | : geometry::tag<Range> | |
77 | {}; | |
78 | ||
79 | template <typename Range, closure_selector Closure, order_selector Order> | |
80 | struct point_order<detail::closed_clockwise_view<Range, Closure, Order> > | |
81 | { | |
82 | static const order_selector value = clockwise; | |
83 | }; | |
84 | ||
85 | template <typename Range, closure_selector Closure, order_selector Order> | |
86 | struct closure<detail::closed_clockwise_view<Range, Closure, Order> > | |
87 | { | |
88 | static const closure_selector value = closed; | |
89 | }; | |
90 | ||
91 | } // namespace traits | |
92 | #endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS | |
93 | ||
94 | ||
95 | }} // namespace boost::geometry | |
96 | ||
97 | ||
98 | #endif // BOOST_GEOMETRY_VIEWS_DETAIL_CLOSED_CLOCKWISE_VIEW_HPP |