]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
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 | ||
20effc67 TL |
7 | // This file was modified by Oracle on 2020. |
8 | // Modifications copyright (c) 2020, Oracle and/or its affiliates. | |
9 | // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle | |
10 | ||
7c673cae FG |
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_STRATEGIES_CONCEPTS_SIMPLIFY_CONCEPT_HPP | |
19 | #define BOOST_GEOMETRY_STRATEGIES_CONCEPTS_SIMPLIFY_CONCEPT_HPP | |
20 | ||
7c673cae | 21 | #include <iterator> |
20effc67 TL |
22 | #include <type_traits> |
23 | #include <vector> | |
7c673cae FG |
24 | |
25 | #include <boost/concept_check.hpp> | |
26 | #include <boost/core/ignore_unused.hpp> | |
27 | ||
28 | #include <boost/geometry/geometries/point.hpp> | |
29 | #include <boost/geometry/strategies/concepts/distance_concept.hpp> | |
30 | ||
31 | ||
32 | namespace boost { namespace geometry { namespace concepts | |
33 | { | |
34 | ||
35 | ||
36 | /*! | |
37 | \brief Checks strategy for simplify | |
38 | \ingroup simplify | |
39 | */ | |
40 | template <typename Strategy, typename Point> | |
41 | struct SimplifyStrategy | |
42 | { | |
43 | #ifndef DOXYGEN_NO_CONCEPT_MEMBERS | |
44 | private : | |
45 | ||
46 | // 1) must define distance_strategy_type, | |
47 | // defining point-segment distance strategy (to be checked) | |
48 | typedef typename Strategy::distance_strategy_type ds_type; | |
49 | ||
50 | ||
51 | struct checker | |
52 | { | |
53 | template <typename ApplyMethod> | |
54 | static void apply(ApplyMethod) | |
55 | { | |
56 | namespace ft = boost::function_types; | |
57 | typedef typename ft::parameter_types | |
58 | < | |
59 | ApplyMethod | |
60 | >::type parameter_types; | |
61 | ||
20effc67 | 62 | typedef std::conditional_t |
7c673cae | 63 | < |
20effc67 TL |
64 | ft::is_member_function_pointer<ApplyMethod>::value, |
65 | std::integral_constant<int, 1>, | |
66 | std::integral_constant<int, 0> | |
67 | > base_index; | |
7c673cae FG |
68 | |
69 | BOOST_CONCEPT_ASSERT | |
70 | ( | |
71 | (concepts::PointSegmentDistanceStrategy<ds_type, Point, Point>) | |
72 | ); | |
73 | ||
74 | Strategy *str = 0; | |
75 | std::vector<Point> const* v1 = 0; | |
76 | std::vector<Point> * v2 = 0; | |
77 | ||
78 | // 2) must implement method apply with arguments | |
79 | // - Range | |
80 | // - OutputIterator | |
81 | // - floating point value | |
82 | str->apply(*v1, std::back_inserter(*v2), 1.0); | |
83 | ||
84 | boost::ignore_unused<parameter_types, base_index>(); | |
85 | boost::ignore_unused(str); | |
86 | } | |
87 | }; | |
88 | ||
89 | public : | |
90 | BOOST_CONCEPT_USAGE(SimplifyStrategy) | |
91 | { | |
92 | checker::apply(&ds_type::template apply<Point, Point>); | |
93 | } | |
94 | #endif | |
95 | }; | |
96 | ||
97 | ||
98 | ||
99 | }}} // namespace boost::geometry::concepts | |
100 | ||
101 | #endif // BOOST_GEOMETRY_STRATEGIES_CONCEPTS_SIMPLIFY_CONCEPT_HPP |