1 // Boost.Geometry (aka GGL, Generic Geometry Library)
2
3 // Copyright (c) 2007-2014 Barend Gehrels, Amsterdam, the Netherlands.
4 // Copyright (c) 2008-2014 Bruno Lalande, Paris, France.
5 // Copyright (c) 2009-2014 Mateusz Loskot, London, UK.
6 // Copyright (c) 2013-2014 Adam Wulkiewicz, Lodz, Poland.
7
8 // This file was modified by Oracle on 2013-2014.
9 // Modifications copyright (c) 2013-2014, Oracle and/or its affiliates.
10
11 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
12 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
13
14 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
15 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
16
17 // Use, modification and distribution is subject to the Boost Software License,
18 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
19 // http://www.boost.org/LICENSE_1_0.txt)
20
21 #ifndef BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISJOINT_INTERFACE_HPP
22 #define BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISJOINT_INTERFACE_HPP
23
24 #include <cstddef>
25
26 #include <boost/variant/apply_visitor.hpp>
27 #include <boost/variant/static_visitor.hpp>
28 #include <boost/variant/variant_fwd.hpp>
29
30 #include <boost/geometry/geometries/concepts/check.hpp>
31
32 #include <boost/geometry/algorithms/dispatch/disjoint.hpp>
33
34
35 namespace boost { namespace geometry
36 {
37
38
39 #ifndef DOXYGEN_NO_DISPATCH
40 namespace dispatch
41 {
42
43
44 // If reversal is needed, perform it
45 template
46 <
47 typename Geometry1, typename Geometry2,
48 std::size_t DimensionCount,
49 typename Tag1, typename Tag2
50 >
51 struct disjoint<Geometry1, Geometry2, DimensionCount, Tag1, Tag2, true>
52 {
applyboost::geometry::dispatch::disjoint53 static inline bool apply(Geometry1 const& g1, Geometry2 const& g2)
54 {
55 return disjoint
56 <
57 Geometry2, Geometry1,
58 DimensionCount,
59 Tag2, Tag1
60 >::apply(g2, g1);
61 }
62 };
63
64
65 } // namespace dispatch
66 #endif // DOXYGEN_NO_DISPATCH
67
68
69 namespace resolve_variant {
70
71 template <typename Geometry1, typename Geometry2>
72 struct disjoint
73 {
applyboost::geometry::resolve_variant::disjoint74 static inline bool apply(Geometry1 const& geometry1, Geometry2 const& geometry2)
75 {
76 concept::check_concepts_and_equal_dimensions
77 <
78 Geometry1 const,
79 Geometry2 const
80 >();
81
82 return dispatch::disjoint<Geometry1, Geometry2>::apply(geometry1, geometry2);
83 }
84 };
85
86 template <BOOST_VARIANT_ENUM_PARAMS(typename T), typename Geometry2>
87 struct disjoint<boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)>, Geometry2>
88 {
89 struct visitor: boost::static_visitor<bool>
90 {
91 Geometry2 const& m_geometry2;
92
visitorboost::geometry::resolve_variant::disjoint::visitor93 visitor(Geometry2 const& geometry2): m_geometry2(geometry2) {}
94
95 template <typename Geometry1>
operator ()boost::geometry::resolve_variant::disjoint::visitor96 bool operator()(Geometry1 const& geometry1) const
97 {
98 return disjoint<Geometry1, Geometry2>::apply(geometry1, m_geometry2);
99 }
100 };
101
102 static inline bool
applyboost::geometry::resolve_variant::disjoint103 apply(boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry1,
104 Geometry2 const& geometry2)
105 {
106 return boost::apply_visitor(visitor(geometry2), geometry1);
107 }
108 };
109
110 template <typename Geometry1, BOOST_VARIANT_ENUM_PARAMS(typename T)>
111 struct disjoint<Geometry1, boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> >
112 {
113 struct visitor: boost::static_visitor<bool>
114 {
115 Geometry1 const& m_geometry1;
116
visitorboost::geometry::resolve_variant::disjoint::visitor117 visitor(Geometry1 const& geometry1): m_geometry1(geometry1) {}
118
119 template <typename Geometry2>
operator ()boost::geometry::resolve_variant::disjoint::visitor120 bool operator()(Geometry2 const& geometry2) const
121 {
122 return disjoint<Geometry1, Geometry2>::apply(m_geometry1, geometry2);
123 }
124 };
125
126 static inline bool
applyboost::geometry::resolve_variant::disjoint127 apply(Geometry1 const& geometry1,
128 boost::variant<BOOST_VARIANT_ENUM_PARAMS(T)> const& geometry2)
129 {
130 return boost::apply_visitor(visitor(geometry1), geometry2);
131 }
132 };
133
134 template <
135 BOOST_VARIANT_ENUM_PARAMS(typename T1),
136 BOOST_VARIANT_ENUM_PARAMS(typename T2)
137 >
138 struct disjoint<
139 boost::variant<BOOST_VARIANT_ENUM_PARAMS(T1)>,
140 boost::variant<BOOST_VARIANT_ENUM_PARAMS(T2)>
141 >
142 {
143 struct visitor: boost::static_visitor<bool>
144 {
145 template <typename Geometry1, typename Geometry2>
operator ()boost::geometry::resolve_variant::disjoint::visitor146 bool operator()(Geometry1 const& geometry1,
147 Geometry2 const& geometry2) const
148 {
149 return disjoint<Geometry1, Geometry2>::apply(geometry1, geometry2);
150 }
151 };
152
153 static inline bool
applyboost::geometry::resolve_variant::disjoint154 apply(boost::variant<BOOST_VARIANT_ENUM_PARAMS(T1)> const& geometry1,
155 boost::variant<BOOST_VARIANT_ENUM_PARAMS(T2)> const& geometry2)
156 {
157 return boost::apply_visitor(visitor(), geometry1, geometry2);
158 }
159 };
160
161 } // namespace resolve_variant
162
163
164
165 /*!
166 \brief \brief_check2{are disjoint}
167 \ingroup disjoint
168 \tparam Geometry1 \tparam_geometry
169 \tparam Geometry2 \tparam_geometry
170 \param geometry1 \param_geometry
171 \param geometry2 \param_geometry
172 \return \return_check2{are disjoint}
173
174 \qbk{[include reference/algorithms/disjoint.qbk]}
175 */
176 template <typename Geometry1, typename Geometry2>
disjoint(Geometry1 const & geometry1,Geometry2 const & geometry2)177 inline bool disjoint(Geometry1 const& geometry1,
178 Geometry2 const& geometry2)
179 {
180 return resolve_variant::disjoint<Geometry1, Geometry2>::apply(geometry1, geometry2);
181 }
182
183
184 }} // namespace boost::geometry
185
186
187 #endif // BOOST_GEOMETRY_ALGORITHMS_DETAIL_DISJOINT_INTERFACE_HPP
188