1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
// (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
// Use, modification and distribution is subject to the Boost Software License,
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP
#define BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP
#include <boost/mpl/assert.hpp>
#include <boost/range/value_type.hpp>
#include <boost/geometry/core/ring_type.hpp>
#include <boost/geometry/core/tag.hpp>
#include <boost/geometry/core/tags.hpp>
#include <boost/geometry/views/box_view.hpp>
namespace boost { namespace geometry
{
#ifndef DOXYGEN_NO_DISPATCH
namespace dispatch
{
template <typename Geometry,
typename Tag = typename tag<Geometry>::type>
struct range_type
{
BOOST_MPL_ASSERT_MSG
(
false, NOT_OR_NOT_YET_IMPLEMENTED_FOR_THIS_GEOMETRY_TYPE
, (types<Geometry>)
);
};
template <typename Geometry>
struct range_type<Geometry, ring_tag>
{
typedef Geometry type;
};
template <typename Geometry>
struct range_type<Geometry, linestring_tag>
{
typedef Geometry type;
};
template <typename Geometry>
struct range_type<Geometry, polygon_tag>
{
typedef typename ring_type<Geometry>::type type;
};
template <typename Geometry>
struct range_type<Geometry, box_tag>
{
typedef box_view<Geometry> type;
};
// multi-point acts itself as a range
template <typename Geometry>
struct range_type<Geometry, multi_point_tag>
{
typedef Geometry type;
};
template <typename Geometry>
struct range_type<Geometry, multi_linestring_tag>
{
typedef typename boost::range_value<Geometry>::type type;
};
template <typename Geometry>
struct range_type<Geometry, multi_polygon_tag>
{
// Call its single-version
typedef typename dispatch::range_type
<
typename boost::range_value<Geometry>::type
>::type type;
};
} // namespace dispatch
#endif // DOXYGEN_NO_DISPATCH
// Will probably be replaced by the more generic "view_as", therefore in detail
namespace detail
{
/*!
\brief Meta-function defining a type which is a boost-range.
\details
- For linestrings and rings, it defines the type itself.
- For polygons it defines the ring type.
- For multi-points, it defines the type itself
- For multi-polygons and multi-linestrings, it defines the single-version
(so in the end the linestring and ring-type-of-multi-polygon)
\ingroup iterators
*/
template <typename Geometry>
struct range_type
{
typedef typename dispatch::range_type
<
Geometry
>::type type;
};
}
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_VIEWS_DETAIL_RANGE_TYPE_HPP
|
