1 // Boost.Geometry (aka GGL, Generic Geometry Library)
2 // Unit Test
3
4 // Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
5 // Copyright (c) 2008-2015 Bruno Lalande, Paris, France.
6 // Copyright (c) 2009-2015 Mateusz Loskot, London, UK.
7
8 // This file was modified by Oracle on 2014, 2015.
9 // Modifications copyright (c) 2014-2015 Oracle and/or its affiliates.
10
11 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
12
13 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
14 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
15
16 // Use, modification and distribution is subject to the Boost Software License,
17 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
18 // http://www.boost.org/LICENSE_1_0.txt)
19
20 #include <algorithms/test_centroid.hpp>
21
22 #include <boost/geometry/geometries/geometries.hpp>
23 #include <boost/geometry/geometries/point_xy.hpp>
24 #include <boost/geometry/geometries/adapted/c_array.hpp>
25 #include <boost/geometry/geometries/adapted/boost_tuple.hpp>
26
27 #include <test_geometries/all_custom_polygon.hpp>
28
29 BOOST_GEOMETRY_REGISTER_C_ARRAY_CS(cs::cartesian)
BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS(cs::cartesian)30 BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS(cs::cartesian)
31
32 template <typename Polygon>
33 void test_polygon()
34 {
35 test_centroid<Polygon>(
36 "POLYGON((2 1.3,2.4 1.7,2.8 1.8,3.4 1.2"
37 ",3.7 1.6,3.4 2,4.1 3,5.3 2.6,5.4 1.2,4.9 0.8,2.9 0.7,2 1.3))",
38 4.06923363095238, 1.65055803571429);
39
40 // with holes
41 test_centroid<Polygon>(
42 "POLYGON((2 1.3,2.4 1.7,2.8 1.8,3.4 1.2"
43 ",3.7 1.6,3.4 2,4.1 3,5.3 2.6,5.4 1.2,4.9 0.8,2.9 0.7,2 1.3)"
44 ",(4 2,4.2 1.4,4.8 1.9,4.4 2.2,4 2))",
45 4.0466264962959677, 1.6348996057331333);
46
47 test_centroid<Polygon>("POLYGON((0 0,0 10,10 10,10 0,0 0))", 5.0, 5.0);
48 test_centroid<Polygon>("POLYGON((-10 0,0 0,0 -10,-10 -10,-10 0))", -5.0, -5.0);
49
50 // invalid, self-intersecting polygon (area = 0)
51 test_centroid<Polygon>("POLYGON((1 1,4 -2,4 2,10 0,1 0,10 1,1 1))", 1.0, 1.0);
52 // invalid, degenerated
53 test_centroid<Polygon>("POLYGON((1 1,1 1,1 1,1 1))", 1.0, 1.0);
54 test_centroid<Polygon>("POLYGON((1 1))", 1.0, 1.0);
55
56 // should (1.5 1) be returned?
57 // if yes, then all other Polygons degenerated to Linestrings should be handled
58 test_centroid<Polygon>("POLYGON((1 1,2 1,1 1,1 1))", 1.0, 1.0);
59
60 // reported 2015.04.24
61 // input INT, result FP
62 test_centroid
63 <
64 bg::model::polygon<bg::model::d2::point_xy<int> >,
65 typename bg::point_type<Polygon>::type,
66 typename bg::coordinate_type<Polygon>::type
67 >("POLYGON((1 1, 1 2, 2 2, 2 1, 1 1))", 1.5, 1.5);
68 }
69
70
71 template <typename P>
test_2d()72 void test_2d()
73 {
74 test_centroid<bg::model::linestring<P> >("LINESTRING(1 1, 2 2, 3 3)", 2.0, 2.0);
75 test_centroid<bg::model::linestring<P> >("LINESTRING(0 0,0 4, 4 4)", 1.0, 3.0);
76 test_centroid<bg::model::linestring<P> >("LINESTRING(0 0,3 3,0 6,3 9,0 12)", 1.5, 6.0);
77
78 test_centroid<bg::model::linestring<P> >("LINESTRING(1 1,10 1,1 0,10 0,4 -2,1 1)",
79 5.41385255923004, 0.13507358481085);
80
81 // degenerated linestring (length = 0)
82 test_centroid<bg::model::linestring<P> >("LINESTRING(1 1, 1 1)", 1.0, 1.0);
83 test_centroid<bg::model::linestring<P> >("LINESTRING(1 1)", 1.0, 1.0);
84
85 {
86 bg::model::linestring<P> ls;
87 // LINESTRING(1 -1,1e308 -1e308,0.0001 0.000)
88 bg::append(ls, P(1, -1));
89 typedef typename bg::coordinate_type<P>::type coord_type;
90 //double m = 1.0e308;
91 coord_type m = (std::numeric_limits<coord_type>::max)();
92 bg::append(ls, P(coord_type(m), coord_type(-m)));
93 bg::append(ls, P(coord_type(0.0001), coord_type(0.000)));
94 if (BOOST_GEOMETRY_CONDITION((boost::is_same<typename bg::coordinate_type<P>::type, double>::value)))
95 {
96 // for doubles the INF is detected and the calculation stopped
97 // currently for Geometries for which the centroid can't be calculated
98 // the first Point is returned
99 test_centroid<bg::model::linestring<P> >(ls, 1.0, -1.0);
100 }
101 else
102 {
103 // for floats internally the double is used to store intermediate results
104 // this type is capable to store MAX_FLT and "correctly" calculate the centroid
105 // test_centroid<bg::model::linestring<P> >(ls, m/3, -m/3);
106 // the result is around (1.7e38 -1.7e38)
107 }
108 }
109
110 test_centroid<bg::model::segment<P> >("LINESTRING(1 1, 3 3)", 2.0, 2.0);
111
112 test_centroid<bg::model::ring<P> >(
113 "POLYGON((2 1.3,2.4 1.7,2.8 1.8,3.4 1.2"
114 ",3.7 1.6,3.4 2,4.1 3,5.3 2.6,5.4 1.2,4.9 0.8,2.9 0.7,2 1.3))",
115 4.06923363095238, 1.65055803571429);
116
117 test_polygon<bg::model::polygon<P> >();
118 test_polygon<all_custom_polygon<P> >();
119
120 // ccw
121 test_centroid<bg::model::ring<P, false> >(
122 "POLYGON((2 1.3,2.9 0.7,4.9 0.8,5.4 1.2,5.3 2.6,4.1 3,3.4 2"
123 ",3.7 1.6,3.4 1.2,2.8 1.8,2.4 1.7,2 1.3))",
124 4.06923363095238, 1.65055803571429);
125
126 // open / closed
127 test_centroid<bg::model::ring<P, true, true> >(
128 "POLYGON((1 1,2 2,3 1,2 0,1 1))", 2.0, 1.0);
129 test_centroid<bg::model::ring<P, true, false> >(
130 "POLYGON((1 1,2 2,3 1,2 0))", 2.0, 1.0);
131
132 test_centroid<bg::model::box<P> >("POLYGON((1 2,3 4))", 2, 3);
133 test_centroid<P>("POINT(3 3)", 3, 3);
134
135 // INT -> FP
136 test_centroid
137 <
138 bg::model::ring<bg::model::d2::point_xy<int> >,
139 P, typename bg::coordinate_type<P>::type
140 >("POLYGON((1 1, 1 2, 2 2, 2 1, 1 1))", 1.5, 1.5);
141 test_centroid
142 <
143 bg::model::linestring<bg::model::d2::point_xy<int> >,
144 P, typename bg::coordinate_type<P>::type
145 >("LINESTRING(1 1, 2 2)", 1.5, 1.5);
146 test_centroid
147 <
148 bg::model::box<bg::model::d2::point_xy<int> >,
149 P, typename bg::coordinate_type<P>::type
150 >("BOX(1 1, 2 2)", 1.5, 1.5);
151 }
152
153
154 template <typename P>
test_3d()155 void test_3d()
156 {
157 test_centroid<bg::model::linestring<P> >("LINESTRING(1 2 3,4 5 -6,7 -8 9,-10 11 12,13 -14 -15, 16 17 18)",
158 5.6748865168734692, 0.31974938587214002, 1.9915270387763671);
159 test_centroid<bg::model::box<P> >("POLYGON((1 2 3,5 6 7))", 3, 4, 5);
160 test_centroid<bg::model::segment<P> >("LINESTRING(1 1 1,3 3 3)", 2, 2, 2);
161 test_centroid<P>("POINT(1 2 3)", 1, 2, 3);
162 }
163
164
165 template <typename P>
test_5d()166 void test_5d()
167 {
168 test_centroid<bg::model::linestring<P> >("LINESTRING(1 2 3 4 95,4 5 -6 24 40,7 -8 9 -5 -7,-10 11 12 -5 5,13 -14 -15 4 3, 16 17 18 5 12)",
169 4.9202312983547678, 0.69590937869808345, 1.2632138719797417, 6.0468332057401986, 23.082402715244868);
170 }
171
172 template <typename P>
test_exceptions()173 void test_exceptions()
174 {
175 test_centroid_exception<bg::model::linestring<P> >();
176 test_centroid_exception<bg::model::polygon<P> >();
177 test_centroid_exception<bg::model::ring<P> >();
178
179 // Empty exterior ring
180 test_centroid_exception<bg::model::polygon<P> >(
181 "POLYGON((), ())");
182 test_centroid_exception<bg::model::polygon<P> >(
183 "POLYGON((), (0 0, 1 0, 1 1, 0 1, 0 0))");
184 }
185
186 template <typename P>
test_empty()187 void test_empty()
188 {
189 // Empty interior ring
190 test_centroid<bg::model::polygon<P> >(
191 "POLYGON((0 0, 1 0, 1 1, 0 1, 0 0), ())",
192 0.5, 0.5);
193 }
194
test_large_integers()195 void test_large_integers()
196 {
197 typedef bg::model::point<int, 2, bg::cs::cartesian> int_point_type;
198 typedef bg::model::point<double, 2, bg::cs::cartesian> double_point_type;
199
200 bg::model::polygon<int_point_type> int_poly;
201 bg::model::polygon<double_point_type> double_poly;
202
203 std::string const polygon_li = "POLYGON((1872000 528000,1872000 192000,1536119 192000,1536000 528000,1200000 528000,1200000 863880,1536000 863880,1872000 863880,1872000 528000))";
204 bg::read_wkt(polygon_li, int_poly);
205 bg::read_wkt(polygon_li, double_poly);
206
207 int_point_type int_centroid;
208 double_point_type double_centroid;
209
210 bg::centroid(int_poly, int_centroid);
211 bg::centroid(double_poly, double_centroid);
212
213 int_point_type double_centroid_as_int;
214 bg::assign_zero(double_centroid_as_int);
215 bg::assign(int_centroid, double_centroid_as_int);
216
217 BOOST_CHECK_EQUAL(bg::get<0>(int_centroid), bg::get<0>(double_centroid_as_int));
218 BOOST_CHECK_EQUAL(bg::get<1>(int_centroid), bg::get<1>(double_centroid_as_int));
219 }
220
221 //#include <to_svg.hpp>
222
test_large_doubles()223 void test_large_doubles()
224 {
225 typedef bg::model::point<double, 2, bg::cs::cartesian> point;
226 point pt_far, pt_near;
227 bg::model::polygon<point> poly_far, poly_near;
228
229 // related to ticket #10643
230 bg::read_wkt("POLYGON((1074699.93 703064.65, 1074703.90 703064.58, 1074704.53 703061.40, 1074702.10 703054.62, 1074699.93 703064.65))", poly_far);
231 bg::read_wkt("POLYGON((699.93 64.65, 703.90 64.58, 704.53 61.40, 702.10 54.62, 699.93 64.65))", poly_near);
232
233 bg::centroid(poly_far, pt_far);
234 bg::centroid(poly_near, pt_near);
235
236 BOOST_CHECK(bg::within(pt_far, poly_far));
237 BOOST_CHECK(bg::within(pt_near, poly_near));
238
239 point pt_near_moved;
240 bg::set<0>(pt_near_moved, bg::get<0>(pt_near) + 1074000.0);
241 bg::set<1>(pt_near_moved, bg::get<1>(pt_near) + 703000.0);
242
243 //geom_to_svg(poly_far, pt_far, "far.svg");
244 //geom_to_svg(poly_near, pt_near, "near.svg");
245
246 double d = bg::distance(pt_far, pt_near_moved);
247 BOOST_CHECK(d < 0.1);
248 }
249
test_main(int,char * [])250 int test_main(int, char* [])
251 {
252 test_2d<bg::model::d2::point_xy<double> >();
253 test_2d<boost::tuple<float, float> >();
254 test_2d<bg::model::d2::point_xy<float> >();
255
256 test_3d<boost::tuple<double, double, double> >();
257
258 test_5d<boost::tuple<double, double, double, double, double> >();
259
260 #ifndef NDEBUG
261 // The test currently fails in release mode. TODO: fix this
262 test_large_integers();
263 #endif
264
265 test_large_doubles();
266
267 test_exceptions<bg::model::d2::point_xy<double> >();
268 test_empty<bg::model::d2::point_xy<double> >();
269
270 return 0;
271 }
272