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.
8 // Modifications copyright (c) 2014 Oracle and/or its affiliates.
9 
10 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
11 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
12 
13 // Use, modification and distribution is subject to the Boost Software License,
14 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
15 // http://www.boost.org/LICENSE_1_0.txt)
16 
17 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
18 
19 #ifndef BOOST_GEOMETRY_VIEWS_DETAIL_NORMALIZED_VIEW_HPP
20 #define BOOST_GEOMETRY_VIEWS_DETAIL_NORMALIZED_VIEW_HPP
21 
22 
23 #include <boost/range/begin.hpp>
24 #include <boost/range/end.hpp>
25 #include <boost/range/iterator.hpp>
26 #include <boost/mpl/if.hpp>
27 #include <boost/type_traits/is_const.hpp>
28 #include <boost/geometry/views/detail/range_type.hpp>
29 #include <boost/geometry/views/reversible_view.hpp>
30 #include <boost/geometry/views/closeable_view.hpp>
31 #include <boost/geometry/util/order_as_direction.hpp>
32 
33 namespace boost { namespace geometry {
34 
35 
36 #ifndef DOXYGEN_NO_DETAIL
37 
38 namespace detail {
39 
40 template <typename Geometry>
41 struct normalized_view
42 {
43     static const bool is_const = boost::is_const<Geometry>::value;
44 
45     //typedef typename ring_type<Geometry>::type ring_type;
46 
47     typedef typename detail::range_type<Geometry>::type range_type;
48 
49     typedef typename
50         boost::mpl::if_c
51             <
52                 is_const,
53                 range_type const,
54                 range_type
55             >::type range;
56 
57     typedef typename
58         reversible_view
59             <
60                 range,
61                 order_as_direction
62                     <
63                         geometry::point_order<Geometry>::value
64                     >::value
65             >::type reversible_type;
66 
67     typedef typename
68         boost::mpl::if_c
69             <
70                 is_const,
71                 reversible_type const,
72                 reversible_type
73             >::type reversible;
74 
75     typedef typename
76         closeable_view
77             <
78                 reversible,
79                 geometry::closure<Geometry>::value
80             >::type closeable_type;
81 
82     typedef typename
83         boost::mpl::if_c
84             <
85                 is_const,
86                 closeable_type const,
87                 closeable_type
88             >::type closeable;
89 
normalized_viewboost::geometry::detail::normalized_view90     explicit inline normalized_view(range & r)
91         : m_reversible(r)
92         , m_closeable(m_reversible)
93     {}
94 
95     typedef typename boost::range_iterator<closeable>::type iterator;
96     typedef typename boost::range_const_iterator<closeable>::type const_iterator;
97 
beginboost::geometry::detail::normalized_view98     inline const_iterator begin() const { return boost::begin(m_closeable); }
endboost::geometry::detail::normalized_view99     inline const_iterator end() const { return boost::end(m_closeable); }
100 
beginboost::geometry::detail::normalized_view101     inline iterator begin() { return boost::begin(m_closeable); }
endboost::geometry::detail::normalized_view102     inline iterator end() { return boost::end(m_closeable); }
103 
104 private:
105     reversible_type m_reversible;
106     closeable_type m_closeable;
107 };
108 
109 } // namespace detail
110 
111 #endif // DOXYGEN_NO_DETAIL
112 
113 
114 }} // namespace boost::geometry
115 
116 
117 #endif // BOOST_GEOMETRY_VIEWS_DETAIL_NORMALIZED_VIEW_HPP
118