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1// Boost.Geometry (aka GGL, Generic Geometry Library)
2
3// Copyright (c) 2015, Oracle and/or its affiliates.
4
5// Licensed under the Boost Software License version 1.0.
6// http://www.boost.org/users/license.html
7
8// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
9
10#ifndef BOOST_GEOMETRY_TEST_CHECK_TURN_LESS_HPP
11#define BOOST_GEOMETRY_TEST_CHECK_TURN_LESS_HPP
12
13#include <boost/range.hpp>
14
15#include "test_set_ops_linear_linear.hpp"
16
17
18// check less functor for turns
19template <typename Turns, typename Less>
20inline void verify_less_for_turns(Turns turns, Less const& less)
21{
22 typedef typename boost::range_iterator<Turns const>::type iterator_type;
23
24 if (boost::size(turns) < 2)
25 {
26 return;
27 }
28
29 iterator_type last = --boost::end(turns);
30 for (iterator_type it1 = boost::begin(turns); it1 != last; ++it1)
31 {
32 iterator_type it2 = it1;
33 ++it2;
34 for (; it2 != boost::end(turns); ++it2)
35 {
36 if (less(*it1, *it2))
37 {
38 BOOST_CHECK(! less(*it2, *it1));
39 }
40 if (less(*it2, *it1))
41 {
42 BOOST_CHECK(! less(*it1, *it2));
43 }
44 }
45 }
46}
47
48
49struct check_turn_less
50{
51 template <bool EnableDegenerateTurns = true>
52 struct assign_policy
53 {
54 static bool const include_no_turn = false;
55 static bool const include_degenerate = EnableDegenerateTurns;
56 static bool const include_opposite = false;
57
58 template
59 <
60 typename Info,
61 typename Point1,
62 typename Point2,
63 typename IntersectionInfo
64 >
65 static inline void apply(Info& , Point1 const& , Point2 const& ,
66 IntersectionInfo const& )
67 {
68 }
69 };
70
71 template <typename Geometry1, typename Geometry2>
72 static inline void apply(Geometry1 const& geometry1,
73 Geometry2 const& geometry2)
74 {
75 typedef bg::detail::no_rescale_policy robust_policy_type;
76
77 typedef bg::detail::relate::turns::get_turns
78 <
79 Geometry1,
80 Geometry2,
81 bg::detail::get_turns::get_turn_info_type
82 <
83 Geometry1, Geometry2, assign_policy<>
84 >,
85 robust_policy_type
86 > get_turns_type;
87
88 typedef typename get_turns_type::turn_info turn_info;
89
90 typedef std::vector<turn_info> turns_container;
91
92 turns_container turns;
93
94 bg::detail::get_turns::no_interrupt_policy interrupt_policy;
95
96 get_turns_type::apply(turns, geometry1, geometry2,
97 interrupt_policy, robust_policy_type());
98
99
100 typedef bg::detail::turns::less_seg_fraction_other_op<> turn_less_type;
101
102 verify_less_for_turns(turns, turn_less_type());
103 }
104};
105
106#endif // BOOST_GEOMETRY_TEST_CHECK_TURN_LESS_HPP