1 // Boost.Geometry
2
3 // Copyright (c) 2017 Barend Gehrels, Amsterdam, the Netherlands.
4
5 // Use, modification and distribution is subject to the Boost Software License,
6 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt)
8
9 #ifndef BOOST_GEOMETRY_TEST_CHECK_VALIDITY_HPP
10 #define BOOST_GEOMETRY_TEST_CHECK_VALIDITY_HPP
11
12 #include <boost/foreach.hpp>
13
14 #include <boost/geometry/algorithms/is_valid.hpp>
15
16 template<typename Geometry, typename G1, typename G2>
is_output_valid(Geometry const & geometry,std::string const & case_id,G1 const & g1,G2 const & g2,std::string & message)17 inline bool is_output_valid(Geometry const& geometry,
18 std::string const& case_id,
19 G1 const& g1, G2 const& g2,
20 std::string& message)
21 {
22 bool const result = bg::is_valid(geometry, message);
23 if (! result)
24 {
25 // Check if input was valid. If not, do not report output validity
26 if (! bg::is_valid(g1) || ! bg::is_valid(g2))
27 {
28 std::cout << "WARNING: Input is not considered as valid; "
29 << "this can cause that output is invalid: " << case_id
30 << std::endl;
31 return true;
32 }
33 }
34 return result;
35 }
36
37 template
38 <
39 typename Geometry,
40 typename Tag = typename bg::tag<Geometry>::type
41 >
42 struct check_validity
43 {
44 template <typename G1, typename G2>
45 static inline
applycheck_validity46 bool apply(Geometry const& geometry,
47 std::string const& case_id,
48 G1 const& g1, G2 const& g2,
49 std::string& message)
50 {
51 return is_output_valid(geometry, case_id, g1, g2, message);
52 }
53 };
54
55 // Specialization for vector of <geometry> (e.g. rings)
56 template <typename Geometry>
57 struct check_validity<Geometry, void>
58 {
59 template <typename G1, typename G2>
60 static inline
applycheck_validity61 bool apply(Geometry const& geometry,
62 std::string const& case_id,
63 G1 const& g1, G2 const& g2,
64 std::string& message)
65 {
66 typedef typename boost::range_value<Geometry>::type single_type;
67 BOOST_FOREACH(single_type const& element, geometry)
68 {
69 if (! is_output_valid(element, case_id, g1, g2, message))
70 {
71 return false;
72 }
73 }
74 return true;
75 }
76 };
77
78
79 #endif // BOOST_GEOMETRY_TEST_CHECK_VALIDITY_HPP
80