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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
// Boost.Geometry
// Copyright (c) 2021, Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// Licensed under the Boost Software License version 1.0.
// http://www.boost.org/users/license.html
#ifndef BOOST_GEOMETRY_STRATEGIES_DISTANCE_BACKWARD_COMPATIBILITY_HPP
#define BOOST_GEOMETRY_STRATEGIES_DISTANCE_BACKWARD_COMPATIBILITY_HPP
#include <boost/geometry/strategies/distance/cartesian.hpp>
#include <boost/geometry/strategies/distance/comparable.hpp>
#include <boost/geometry/strategies/distance/detail.hpp>
#include <boost/geometry/strategies/distance/geographic.hpp>
#include <boost/geometry/strategies/distance/spherical.hpp>
namespace boost { namespace geometry
{
namespace strategies { namespace distance
{
#ifndef DOXYGEN_NO_DETAIL
namespace detail
{
template
<
typename Strategy,
typename CSTag,
typename StrategyTag = typename strategy::distance::services::tag<Strategy>::type
>
struct custom_strategy
{
BOOST_GEOMETRY_STATIC_ASSERT_FALSE(
"Not implemented for this Strategy.",
Strategy);
};
// NOTES:
// - There is no guarantee that any of the custom strategies are compatible with other
// strategies.
// - In many cases it is not possible to pass the custom strategy into other strategies.
// - The old backward compatibility code creating default Pt/Seg strategy from custom
// Pt/Pt strategy worked the same way. The custom strategy is default-created.
// - There are two versions of algorithm for Polyseg/Box, one for Seg/Box strategy the
// other one for Pt/Seg strategy. However there is only one version of algorithm for
// Seg/Box taking Seg/Box strategy.
// - Geographic strategies are default-created which means WGS84 spheroid is used.
// - Currently only Pt/Pt custom strategies are supported because this is what the old
// backward compatibility code was addressing.
template <typename Strategy>
struct custom_strategy<Strategy, cartesian_tag, strategy_tag_distance_point_point>
: cartesian<>
{
custom_strategy(Strategy const& strategy)
: m_strategy(strategy)
{}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_pp_t<Geometry1, Geometry2> * = nullptr) const
{
return m_strategy;
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_ps_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::projected_point<void, Strategy>();
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_pb_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::pythagoras_point_box<>();
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_sb_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::cartesian_segment_box<void, Strategy>();
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_bb_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::pythagoras_box_box<>();
}
private:
Strategy const& m_strategy;
};
template <typename Strategy>
struct custom_strategy<Strategy, spherical_tag, strategy_tag_distance_point_point>
: detail::spherical<void, void>
{
custom_strategy(Strategy const& strategy)
: m_strategy(strategy)
{}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_pp_t<Geometry1, Geometry2> * = nullptr) const
{
return m_strategy;
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_ps_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::cross_track<void, Strategy>(m_strategy);
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_pb_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::cross_track_point_box<void, Strategy>(m_strategy);
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_sb_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::spherical_segment_box<void, Strategy>(m_strategy);
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_bb_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::cross_track_box_box<void, Strategy>(m_strategy);
}
private:
Strategy const& m_strategy;
};
template <typename Strategy>
struct custom_strategy<Strategy, geographic_tag, strategy_tag_distance_point_point>
: geographic<>
{
custom_strategy(Strategy const& strategy)
: m_strategy(strategy)
{}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_pp_t<Geometry1, Geometry2> * = nullptr) const
{
return m_strategy;
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_ps_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::geographic_cross_track<>();
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_pb_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::geographic_cross_track_point_box<>();
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_sb_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::geographic_segment_box<>();
}
template <typename Geometry1, typename Geometry2>
auto distance(Geometry1 const&, Geometry2 const&,
enable_if_bb_t<Geometry1, Geometry2> * = nullptr) const
{
return strategy::distance::geographic_cross_track_box_box<>();
}
private:
Strategy const& m_strategy;
};
} // namespace detail
#endif // DOXYGEN_NO_DETAIL
namespace services
{
template <typename Geometry1, typename Geometry2, typename Strategy>
struct custom_strategy_converter<Geometry1, Geometry2, Strategy, cartesian_tag, cartesian_tag>
{
static auto get(Strategy const& strategy)
{
return detail::custom_strategy<Strategy, cartesian_tag>(strategy);
}
};
template <typename Geometry1, typename Geometry2, typename Strategy>
struct custom_strategy_converter<Geometry1, Geometry2, Strategy, spherical_equatorial_tag, spherical_equatorial_tag>
{
static auto get(Strategy const& strategy)
{
return detail::custom_strategy<Strategy, spherical_tag>(strategy);
}
};
template <typename Geometry1, typename Geometry2, typename Strategy>
struct custom_strategy_converter<Geometry1, Geometry2, Strategy, geographic_tag, geographic_tag>
{
static auto get(Strategy const& strategy)
{
return detail::custom_strategy<Strategy, geographic_tag>(strategy);
}
};
} // namespace services
}} // namespace strategies::distance
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_STRATEGIES_DISTANCE_BACKWARD_COMPATIBILITY_HPP
|
