| 1 | #!/usr/bin/env python |
|---|
| 2 | |
|---|
| 3 | |
|---|
| 4 | import unittest |
|---|
| 5 | from Numeric import zeros, array, allclose |
|---|
| 6 | from math import sqrt, pi |
|---|
| 7 | |
|---|
| 8 | from polygon import * |
|---|
| 9 | from coordinate_transforms.geo_reference import Geo_reference |
|---|
| 10 | |
|---|
| 11 | def test_function(x, y): |
|---|
| 12 | return x+y |
|---|
| 13 | |
|---|
| 14 | class Test_Polygon(unittest.TestCase): |
|---|
| 15 | def setUp(self): |
|---|
| 16 | pass |
|---|
| 17 | |
|---|
| 18 | def tearDown(self): |
|---|
| 19 | pass |
|---|
| 20 | |
|---|
| 21 | |
|---|
| 22 | def test_that_C_extension_compiles(self): |
|---|
| 23 | FN = 'polygon_ext.c' |
|---|
| 24 | try: |
|---|
| 25 | import polygon_ext |
|---|
| 26 | except: |
|---|
| 27 | from compile import compile |
|---|
| 28 | |
|---|
| 29 | try: |
|---|
| 30 | compile(FN) |
|---|
| 31 | except: |
|---|
| 32 | raise 'Could not compile %s' %FN |
|---|
| 33 | else: |
|---|
| 34 | import polygon_ext |
|---|
| 35 | |
|---|
| 36 | |
|---|
| 37 | #Polygon stuff |
|---|
| 38 | def test_polygon_function_constants(self): |
|---|
| 39 | p1 = [[0,0], [10,0], [10,10], [0,10]] |
|---|
| 40 | p2 = [[0,0], [10,10], [15,5], [20, 10], [25,0], [30,10], [40,-10]] |
|---|
| 41 | |
|---|
| 42 | f = Polygon_function( [(p1, 1.0)] ) |
|---|
| 43 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) #Two first inside p1 |
|---|
| 44 | assert allclose(z, [1,1,0,0]) |
|---|
| 45 | |
|---|
| 46 | |
|---|
| 47 | f = Polygon_function( [(p2, 2.0)] ) |
|---|
| 48 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) #First and last inside p2 |
|---|
| 49 | assert allclose(z, [2,0,0,2]) |
|---|
| 50 | |
|---|
| 51 | |
|---|
| 52 | #Combined |
|---|
| 53 | f = Polygon_function( [(p1, 1.0), (p2, 2.0)] ) |
|---|
| 54 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) |
|---|
| 55 | assert allclose(z, [2,1,0,2]) |
|---|
| 56 | |
|---|
| 57 | |
|---|
| 58 | def test_polygon_function_georef(self): |
|---|
| 59 | """Check that georeferencing works |
|---|
| 60 | """ |
|---|
| 61 | |
|---|
| 62 | from coordinate_transforms.geo_reference import Geo_reference |
|---|
| 63 | |
|---|
| 64 | geo = Geo_reference(56, 200, 1000) |
|---|
| 65 | |
|---|
| 66 | #Make points 'absolute' |
|---|
| 67 | p1 = [[200,1000], [210,1000], [210,1010], [200,1010]] |
|---|
| 68 | p2 = [[200,1000], [210,1010], [215,1005], [220, 1010], [225,1000], |
|---|
| 69 | [230,1010], [240,990]] |
|---|
| 70 | |
|---|
| 71 | f = Polygon_function( [(p1, 1.0)], geo_reference = geo ) |
|---|
| 72 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) #Two first inside p1 |
|---|
| 73 | |
|---|
| 74 | assert allclose(z, [1,1,0,0]) |
|---|
| 75 | |
|---|
| 76 | |
|---|
| 77 | f = Polygon_function( [(p2, 2.0)], geo_reference = geo ) |
|---|
| 78 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) #First and last inside p2 |
|---|
| 79 | assert allclose(z, [2,0,0,2]) |
|---|
| 80 | |
|---|
| 81 | |
|---|
| 82 | #Combined |
|---|
| 83 | f = Polygon_function( [(p1, 1.0), (p2, 2.0)], geo_reference = geo ) |
|---|
| 84 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) |
|---|
| 85 | assert allclose(z, [2,1,0,2]) |
|---|
| 86 | |
|---|
| 87 | |
|---|
| 88 | #Check that it would fail without geo |
|---|
| 89 | f = Polygon_function( [(p1, 1.0), (p2, 2.0)]) |
|---|
| 90 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) |
|---|
| 91 | assert not allclose(z, [2,1,0,2]) |
|---|
| 92 | |
|---|
| 93 | |
|---|
| 94 | |
|---|
| 95 | def test_polygon_function_callable(self): |
|---|
| 96 | """Check that values passed into Polygon_function can be callable |
|---|
| 97 | themselves. |
|---|
| 98 | """ |
|---|
| 99 | p1 = [[0,0], [10,0], [10,10], [0,10]] |
|---|
| 100 | p2 = [[0,0], [10,10], [15,5], [20, 10], [25,0], [30,10], [40,-10]] |
|---|
| 101 | |
|---|
| 102 | f = Polygon_function( [(p1, test_function)] ) |
|---|
| 103 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) #Two first inside p1 |
|---|
| 104 | assert allclose(z, [10,14,0,0]) |
|---|
| 105 | |
|---|
| 106 | #Combined |
|---|
| 107 | f = Polygon_function( [(p1, test_function), (p2, 2.0)] ) |
|---|
| 108 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) |
|---|
| 109 | assert allclose(z, [2,14,0,2]) |
|---|
| 110 | |
|---|
| 111 | |
|---|
| 112 | #Combined w default |
|---|
| 113 | f = Polygon_function( [(p1, test_function), (p2, 2.0)], default = 3.14) |
|---|
| 114 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) |
|---|
| 115 | assert allclose(z, [2,14,3.14,2]) |
|---|
| 116 | |
|---|
| 117 | |
|---|
| 118 | #Combined w default func |
|---|
| 119 | f = Polygon_function( [(p1, test_function), (p2, 2.0)], |
|---|
| 120 | default = test_function) |
|---|
| 121 | z = f([5, 5, 27, 35], [5, 9, 8, -5]) |
|---|
| 122 | assert allclose(z, [2,14,35,2]) |
|---|
| 123 | |
|---|
| 124 | |
|---|
| 125 | |
|---|
| 126 | def test_point_on_line(self): |
|---|
| 127 | |
|---|
| 128 | #Endpoints first |
|---|
| 129 | assert point_on_line( 0, 0, 0,0, 1,0 ) |
|---|
| 130 | assert point_on_line( 1, 0, 0,0, 1,0 ) |
|---|
| 131 | |
|---|
| 132 | #Then points on line |
|---|
| 133 | assert point_on_line( 0.5, 0, 0,0, 1,0 ) |
|---|
| 134 | assert point_on_line( 0, 0.5, 0,1, 0,0 ) |
|---|
| 135 | assert point_on_line( 1, 0.5, 1,1, 1,0 ) |
|---|
| 136 | assert point_on_line( 0.5, 0.5, 0,0, 1,1 ) |
|---|
| 137 | |
|---|
| 138 | #Then points not on line |
|---|
| 139 | assert not point_on_line( 0.5, 0, 0,1, 1,1 ) |
|---|
| 140 | assert not point_on_line( 0, 0.5, 0,0, 1,1 ) |
|---|
| 141 | |
|---|
| 142 | #From real example that failed |
|---|
| 143 | assert not point_on_line( 40,50, 40,20, 40,40 ) |
|---|
| 144 | |
|---|
| 145 | |
|---|
| 146 | #From real example that failed |
|---|
| 147 | assert not point_on_line( 40,19, 40,20, 40,40 ) |
|---|
| 148 | |
|---|
| 149 | |
|---|
| 150 | |
|---|
| 151 | |
|---|
| 152 | def test_inside_polygon_main(self): |
|---|
| 153 | |
|---|
| 154 | |
|---|
| 155 | #Simplest case: Polygon is the unit square |
|---|
| 156 | polygon = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 157 | |
|---|
| 158 | assert inside_polygon( (0.5, 0.5), polygon ) |
|---|
| 159 | assert not inside_polygon( (0.5, 1.5), polygon ) |
|---|
| 160 | assert not inside_polygon( (0.5, -0.5), polygon ) |
|---|
| 161 | assert not inside_polygon( (-0.5, 0.5), polygon ) |
|---|
| 162 | assert not inside_polygon( (1.5, 0.5), polygon ) |
|---|
| 163 | |
|---|
| 164 | #Try point on borders |
|---|
| 165 | assert inside_polygon( (1., 0.5), polygon, closed=True) |
|---|
| 166 | assert inside_polygon( (0.5, 1), polygon, closed=True) |
|---|
| 167 | assert inside_polygon( (0., 0.5), polygon, closed=True) |
|---|
| 168 | assert inside_polygon( (0.5, 0.), polygon, closed=True) |
|---|
| 169 | |
|---|
| 170 | assert not inside_polygon( (0.5, 1), polygon, closed=False) |
|---|
| 171 | assert not inside_polygon( (0., 0.5), polygon, closed=False) |
|---|
| 172 | assert not inside_polygon( (0.5, 0.), polygon, closed=False) |
|---|
| 173 | assert not inside_polygon( (1., 0.5), polygon, closed=False) |
|---|
| 174 | |
|---|
| 175 | |
|---|
| 176 | |
|---|
| 177 | #From real example (that failed) |
|---|
| 178 | polygon = [[20,20], [40,20], [40,40], [20,40]] |
|---|
| 179 | points = [ [40, 50] ] |
|---|
| 180 | res = inside_polygon(points, polygon) |
|---|
| 181 | assert len(res) == 0 |
|---|
| 182 | |
|---|
| 183 | polygon = [[20,20], [40,20], [40,40], [20,40]] |
|---|
| 184 | points = [ [25, 25], [30, 20], [40, 50], [90, 20], [40, 90] ] |
|---|
| 185 | res = inside_polygon(points, polygon) |
|---|
| 186 | assert len(res) == 2 |
|---|
| 187 | assert allclose(res, [0,1]) |
|---|
| 188 | |
|---|
| 189 | |
|---|
| 190 | |
|---|
| 191 | #More convoluted and non convex polygon |
|---|
| 192 | polygon = [[0,0], [1,0], [0.5,-1], [2, -1], [2,1], [0,1]] |
|---|
| 193 | assert inside_polygon( (0.5, 0.5), polygon ) |
|---|
| 194 | assert inside_polygon( (1, -0.5), polygon ) |
|---|
| 195 | assert inside_polygon( (1.5, 0), polygon ) |
|---|
| 196 | |
|---|
| 197 | assert not inside_polygon( (0.5, 1.5), polygon ) |
|---|
| 198 | assert not inside_polygon( (0.5, -0.5), polygon ) |
|---|
| 199 | |
|---|
| 200 | |
|---|
| 201 | #Very convoluted polygon |
|---|
| 202 | polygon = [[0,0], [10,10], [15,5], [20, 10], [25,0], [30,10], [40,-10]] |
|---|
| 203 | assert inside_polygon( (5, 5), polygon ) |
|---|
| 204 | assert inside_polygon( (17, 7), polygon ) |
|---|
| 205 | assert inside_polygon( (27, 2), polygon ) |
|---|
| 206 | assert inside_polygon( (35, -5), polygon ) |
|---|
| 207 | assert not inside_polygon( (15, 7), polygon ) |
|---|
| 208 | assert not inside_polygon( (24, 3), polygon ) |
|---|
| 209 | assert not inside_polygon( (25, -10), polygon ) |
|---|
| 210 | |
|---|
| 211 | |
|---|
| 212 | |
|---|
| 213 | #Another combination (that failed) |
|---|
| 214 | polygon = [[0,0], [10,0], [10,10], [0,10]] |
|---|
| 215 | assert inside_polygon( (5, 5), polygon ) |
|---|
| 216 | assert inside_polygon( (7, 7), polygon ) |
|---|
| 217 | assert not inside_polygon( (-17, 7), polygon ) |
|---|
| 218 | assert not inside_polygon( (7, 17), polygon ) |
|---|
| 219 | assert not inside_polygon( (17, 7), polygon ) |
|---|
| 220 | assert not inside_polygon( (27, 8), polygon ) |
|---|
| 221 | assert not inside_polygon( (35, -5), polygon ) |
|---|
| 222 | |
|---|
| 223 | |
|---|
| 224 | |
|---|
| 225 | |
|---|
| 226 | #Multiple polygons |
|---|
| 227 | |
|---|
| 228 | polygon = [[0,0], [1,0], [1,1], [0,1], [0,0], |
|---|
| 229 | [10,10], [11,10], [11,11], [10,11], [10,10]] |
|---|
| 230 | assert inside_polygon( (0.5, 0.5), polygon ) |
|---|
| 231 | assert inside_polygon( (10.5, 10.5), polygon ) |
|---|
| 232 | |
|---|
| 233 | #FIXME: Fails if point is 5.5, 5.5 |
|---|
| 234 | assert not inside_polygon( (0, 5.5), polygon ) |
|---|
| 235 | |
|---|
| 236 | #Polygon with a hole |
|---|
| 237 | polygon = [[-1,-1], [2,-1], [2,2], [-1,2], [-1,-1], |
|---|
| 238 | [0,0], [1,0], [1,1], [0,1], [0,0]] |
|---|
| 239 | |
|---|
| 240 | assert inside_polygon( (0, -0.5), polygon ) |
|---|
| 241 | assert not inside_polygon( (0.5, 0.5), polygon ) |
|---|
| 242 | |
|---|
| 243 | |
|---|
| 244 | |
|---|
| 245 | def test_duplicate_points_being_ok(self): |
|---|
| 246 | |
|---|
| 247 | |
|---|
| 248 | #Simplest case: Polygon is the unit square |
|---|
| 249 | polygon = [[0,0], [1,0], [1,0], [1,0], [1,1], [0,1], [0,0]] |
|---|
| 250 | |
|---|
| 251 | assert inside_polygon( (0.5, 0.5), polygon ) |
|---|
| 252 | assert not inside_polygon( (0.5, 1.5), polygon ) |
|---|
| 253 | assert not inside_polygon( (0.5, -0.5), polygon ) |
|---|
| 254 | assert not inside_polygon( (-0.5, 0.5), polygon ) |
|---|
| 255 | assert not inside_polygon( (1.5, 0.5), polygon ) |
|---|
| 256 | |
|---|
| 257 | #Try point on borders |
|---|
| 258 | assert inside_polygon( (1., 0.5), polygon, closed=True) |
|---|
| 259 | assert inside_polygon( (0.5, 1), polygon, closed=True) |
|---|
| 260 | assert inside_polygon( (0., 0.5), polygon, closed=True) |
|---|
| 261 | assert inside_polygon( (0.5, 0.), polygon, closed=True) |
|---|
| 262 | |
|---|
| 263 | assert not inside_polygon( (0.5, 1), polygon, closed=False) |
|---|
| 264 | assert not inside_polygon( (0., 0.5), polygon, closed=False) |
|---|
| 265 | assert not inside_polygon( (0.5, 0.), polygon, closed=False) |
|---|
| 266 | assert not inside_polygon( (1., 0.5), polygon, closed=False) |
|---|
| 267 | |
|---|
| 268 | #From real example |
|---|
| 269 | polygon = [[20,20], [40,20], [40,40], [20,40]] |
|---|
| 270 | points = [ [40, 50] ] |
|---|
| 271 | res = inside_polygon(points, polygon) |
|---|
| 272 | assert len(res) == 0 |
|---|
| 273 | |
|---|
| 274 | |
|---|
| 275 | |
|---|
| 276 | def test_inside_polygon_vector_version(self): |
|---|
| 277 | #Now try the vector formulation returning indices |
|---|
| 278 | polygon = [[0,0], [1,0], [0.5,-1], [2, -1], [2,1], [0,1]] |
|---|
| 279 | points = [ [0.5, 0.5], [1, -0.5], [1.5, 0], [0.5, 1.5], [0.5, -0.5]] |
|---|
| 280 | res = inside_polygon( points, polygon, verbose=False ) |
|---|
| 281 | |
|---|
| 282 | assert allclose( res, [0,1,2] ) |
|---|
| 283 | |
|---|
| 284 | def test_outside_polygon(self): |
|---|
| 285 | U = [[0,0], [1,0], [1,1], [0,1]] #Unit square |
|---|
| 286 | |
|---|
| 287 | assert not outside_polygon( [0.5, 0.5], U ) |
|---|
| 288 | #evaluate to False as the point 0.5, 0.5 is inside the unit square |
|---|
| 289 | |
|---|
| 290 | assert outside_polygon( [1.5, 0.5], U ) |
|---|
| 291 | #evaluate to True as the point 1.5, 0.5 is outside the unit square |
|---|
| 292 | |
|---|
| 293 | indices = outside_polygon( [[0.5, 0.5], [1, -0.5], [0.3, 0.2]], U ) |
|---|
| 294 | assert allclose( indices, [1] ) |
|---|
| 295 | |
|---|
| 296 | #One more test of vector formulation returning indices |
|---|
| 297 | polygon = [[0,0], [1,0], [0.5,-1], [2, -1], [2,1], [0,1]] |
|---|
| 298 | points = [ [0.5, 0.5], [1, -0.5], [1.5, 0], [0.5, 1.5], [0.5, -0.5]] |
|---|
| 299 | res = outside_polygon( points, polygon ) |
|---|
| 300 | |
|---|
| 301 | assert allclose( res, [3, 4] ) |
|---|
| 302 | |
|---|
| 303 | |
|---|
| 304 | |
|---|
| 305 | polygon = [[0,0], [1,0], [0.5,-1], [2, -1], [2,1], [0,1]] |
|---|
| 306 | points = [ [0.5, 1.4], [0.5, 0.5], [1, -0.5], [1.5, 0], [0.5, 1.5], [0.5, -0.5]] |
|---|
| 307 | res = outside_polygon( points, polygon ) |
|---|
| 308 | |
|---|
| 309 | assert allclose( res, [0, 4, 5] ) |
|---|
| 310 | |
|---|
| 311 | def test_outside_polygon2(self): |
|---|
| 312 | U = [[0,0], [1,0], [1,1], [0,1]] #Unit square |
|---|
| 313 | |
|---|
| 314 | assert not outside_polygon( [0.5, 1.0], U, closed = True ) |
|---|
| 315 | #evaluate to False as the point 0.5, 1.0 is inside the unit square |
|---|
| 316 | |
|---|
| 317 | assert outside_polygon( [0.5, 1.0], U, closed = False ) |
|---|
| 318 | #evaluate to True as the point 0.5, 1.0 is outside the unit square |
|---|
| 319 | |
|---|
| 320 | def test_all_outside_polygon(self): |
|---|
| 321 | """Test case where all points are outside poly |
|---|
| 322 | """ |
|---|
| 323 | |
|---|
| 324 | U = [[0,0], [1,0], [1,1], [0,1]] #Unit square |
|---|
| 325 | |
|---|
| 326 | points = [[2,2], [1,3], [-1,1], [0,2]] #All outside |
|---|
| 327 | |
|---|
| 328 | |
|---|
| 329 | indices, count = separate_points_by_polygon(points, U) |
|---|
| 330 | #print indices, count |
|---|
| 331 | assert count == 0 #None inside |
|---|
| 332 | assert allclose(indices, [3,2,1,0]) |
|---|
| 333 | |
|---|
| 334 | indices = outside_polygon(points, U, closed = True) |
|---|
| 335 | assert allclose(indices, [0,1,2,3]) |
|---|
| 336 | |
|---|
| 337 | indices = inside_polygon(points, U, closed = True) |
|---|
| 338 | assert allclose(indices, []) |
|---|
| 339 | |
|---|
| 340 | |
|---|
| 341 | def test_all_inside_polygon(self): |
|---|
| 342 | """Test case where all points are inside poly |
|---|
| 343 | """ |
|---|
| 344 | |
|---|
| 345 | U = [[0,0], [1,0], [1,1], [0,1]] #Unit square |
|---|
| 346 | |
|---|
| 347 | points = [[0.5,0.5], [0.2,0.3], [0,0.5]] #All inside (or on edge) |
|---|
| 348 | |
|---|
| 349 | |
|---|
| 350 | indices, count = separate_points_by_polygon(points, U) |
|---|
| 351 | assert count == 3 #All inside |
|---|
| 352 | assert allclose(indices, [0,1,2]) |
|---|
| 353 | |
|---|
| 354 | indices = outside_polygon(points, U, closed = True) |
|---|
| 355 | assert allclose(indices, []) |
|---|
| 356 | |
|---|
| 357 | indices = inside_polygon(points, U, closed = True) |
|---|
| 358 | assert allclose(indices, [0,1,2]) |
|---|
| 359 | |
|---|
| 360 | |
|---|
| 361 | def test_separate_points_by_polygon(self): |
|---|
| 362 | U = [[0,0], [1,0], [1,1], [0,1]] #Unit square |
|---|
| 363 | |
|---|
| 364 | indices, count = separate_points_by_polygon( [[0.5, 0.5], [1, -0.5], [0.3, 0.2]], U ) |
|---|
| 365 | assert allclose( indices, [0,2,1] ) |
|---|
| 366 | assert count == 2 |
|---|
| 367 | |
|---|
| 368 | #One more test of vector formulation returning indices |
|---|
| 369 | polygon = [[0,0], [1,0], [0.5,-1], [2, -1], [2,1], [0,1]] |
|---|
| 370 | points = [ [0.5, 0.5], [1, -0.5], [1.5, 0], [0.5, 1.5], [0.5, -0.5]] |
|---|
| 371 | res, count = separate_points_by_polygon( points, polygon ) |
|---|
| 372 | |
|---|
| 373 | assert allclose( res, [0,1,2,4,3] ) |
|---|
| 374 | assert count == 3 |
|---|
| 375 | |
|---|
| 376 | |
|---|
| 377 | polygon = [[0,0], [1,0], [0.5,-1], [2, -1], [2,1], [0,1]] |
|---|
| 378 | points = [ [0.5, 1.4], [0.5, 0.5], [1, -0.5], [1.5, 0], [0.5, 1.5], [0.5, -0.5]] |
|---|
| 379 | res, count = separate_points_by_polygon( points, polygon ) |
|---|
| 380 | |
|---|
| 381 | assert allclose( res, [1,2,3,5,4,0] ) |
|---|
| 382 | assert count == 3 |
|---|
| 383 | |
|---|
| 384 | |
|---|
| 385 | def test_populate_polygon(self): |
|---|
| 386 | |
|---|
| 387 | polygon = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 388 | points = populate_polygon(polygon, 5) |
|---|
| 389 | |
|---|
| 390 | assert len(points) == 5 |
|---|
| 391 | for point in points: |
|---|
| 392 | assert inside_polygon(point, polygon) |
|---|
| 393 | |
|---|
| 394 | |
|---|
| 395 | #Very convoluted polygon |
|---|
| 396 | polygon = [[0,0], [10,10], [15,5], [20, 10], [25,0], [30,10], [40,-10]] |
|---|
| 397 | |
|---|
| 398 | points = populate_polygon(polygon, 5) |
|---|
| 399 | |
|---|
| 400 | assert len(points) == 5 |
|---|
| 401 | for point in points: |
|---|
| 402 | assert inside_polygon(point, polygon) |
|---|
| 403 | |
|---|
| 404 | |
|---|
| 405 | def test_populate_polygon_with_exclude(self): |
|---|
| 406 | |
|---|
| 407 | |
|---|
| 408 | polygon = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 409 | ex_poly = [[0,0], [0.5,0], [0.5, 0.5], [0,0.5]] #SW quarter |
|---|
| 410 | points = populate_polygon(polygon, 5, exclude = [ex_poly]) |
|---|
| 411 | |
|---|
| 412 | assert len(points) == 5 |
|---|
| 413 | for point in points: |
|---|
| 414 | assert inside_polygon(point, polygon) |
|---|
| 415 | assert not inside_polygon(point, ex_poly) |
|---|
| 416 | |
|---|
| 417 | |
|---|
| 418 | #overlap |
|---|
| 419 | polygon = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 420 | ex_poly = [[-1,-1], [0.5,0], [0.5, 0.5], [-1,0.5]] |
|---|
| 421 | points = populate_polygon(polygon, 5, exclude = [ex_poly]) |
|---|
| 422 | |
|---|
| 423 | assert len(points) == 5 |
|---|
| 424 | for point in points: |
|---|
| 425 | assert inside_polygon(point, polygon) |
|---|
| 426 | assert not inside_polygon(point, ex_poly) |
|---|
| 427 | |
|---|
| 428 | #Multiple |
|---|
| 429 | polygon = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 430 | ex_poly1 = [[0,0], [0.5,0], [0.5, 0.5], [0,0.5]] #SW quarter |
|---|
| 431 | ex_poly2 = [[0.5,0.5], [0.5,1], [1, 1], [1,0.5]] #NE quarter |
|---|
| 432 | |
|---|
| 433 | points = populate_polygon(polygon, 20, exclude = [ex_poly1, ex_poly2]) |
|---|
| 434 | |
|---|
| 435 | assert len(points) == 20 |
|---|
| 436 | for point in points: |
|---|
| 437 | assert inside_polygon(point, polygon) |
|---|
| 438 | assert not inside_polygon(point, ex_poly1) |
|---|
| 439 | assert not inside_polygon(point, ex_poly2) |
|---|
| 440 | |
|---|
| 441 | |
|---|
| 442 | #Very convoluted polygon |
|---|
| 443 | polygon = [[0,0], [10,10], [15,5], [20, 10], [25,0], [30,10], [40,-10]] |
|---|
| 444 | ex_poly = [[-1,-1], [5,0], [5, 5], [-1,5]] |
|---|
| 445 | points = populate_polygon(polygon, 20, exclude = [ex_poly]) |
|---|
| 446 | |
|---|
| 447 | assert len(points) == 20 |
|---|
| 448 | for point in points: |
|---|
| 449 | assert inside_polygon(point, polygon) |
|---|
| 450 | assert not inside_polygon(point, ex_poly), '%s' %str(point) |
|---|
| 451 | |
|---|
| 452 | def test_point_in_polygon(self): |
|---|
| 453 | polygon = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 454 | point = point_in_polygon(polygon) |
|---|
| 455 | assert inside_polygon(point, polygon) |
|---|
| 456 | |
|---|
| 457 | #this may get into a vicious loop |
|---|
| 458 | #polygon = [[1e32,1e54], [1,0], [1,1], [0,1]] |
|---|
| 459 | |
|---|
| 460 | polygon = [[1e15,1e7], [1,0], [1,1], [0,1]] |
|---|
| 461 | point = point_in_polygon(polygon) |
|---|
| 462 | assert inside_polygon(point, polygon) |
|---|
| 463 | |
|---|
| 464 | |
|---|
| 465 | polygon = [[0,0], [1,0], [1,1], [1e8,1e8]] |
|---|
| 466 | point = point_in_polygon(polygon) |
|---|
| 467 | assert inside_polygon(point, polygon) |
|---|
| 468 | |
|---|
| 469 | |
|---|
| 470 | polygon = [[1e32,1e54], [-1e32,1e54], [1e32,-1e54]] |
|---|
| 471 | point = point_in_polygon(polygon) |
|---|
| 472 | assert inside_polygon(point, polygon) |
|---|
| 473 | |
|---|
| 474 | |
|---|
| 475 | polygon = [[1e18,1e15], [1,0], [0,1]] |
|---|
| 476 | point = point_in_polygon(polygon) |
|---|
| 477 | assert inside_polygon(point, polygon) |
|---|
| 478 | |
|---|
| 479 | def test_in_and_outside_polygon_main(self): |
|---|
| 480 | |
|---|
| 481 | |
|---|
| 482 | #Simplest case: Polygon is the unit square |
|---|
| 483 | polygon = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 484 | |
|---|
| 485 | inside, outside = in_and_outside_polygon( (0.5, 0.5), polygon ) |
|---|
| 486 | assert inside[0] == 0 |
|---|
| 487 | assert len(outside) == 0 |
|---|
| 488 | |
|---|
| 489 | inside, outside = in_and_outside_polygon( (1., 0.5), polygon, closed=True) |
|---|
| 490 | assert inside[0] == 0 |
|---|
| 491 | assert len(outside) == 0 |
|---|
| 492 | |
|---|
| 493 | inside, outside = in_and_outside_polygon( (1., 0.5), polygon, closed=False) |
|---|
| 494 | assert len(inside) == 0 |
|---|
| 495 | assert outside[0] == 0 |
|---|
| 496 | |
|---|
| 497 | points = [(1., 0.25),(1., 0.75) ] |
|---|
| 498 | inside, outside = in_and_outside_polygon( points, polygon, closed=True) |
|---|
| 499 | assert (inside, [0,1]) |
|---|
| 500 | assert len(outside) == 0 |
|---|
| 501 | |
|---|
| 502 | inside, outside = in_and_outside_polygon( points, polygon, closed=False) |
|---|
| 503 | assert len(inside) == 0 |
|---|
| 504 | assert (outside, [0,1]) |
|---|
| 505 | |
|---|
| 506 | |
|---|
| 507 | points = [(100., 0.25),(0.5, 0.5) ] |
|---|
| 508 | inside, outside = in_and_outside_polygon( points, polygon) |
|---|
| 509 | assert (inside, [1]) |
|---|
| 510 | assert outside[0] == 0 |
|---|
| 511 | |
|---|
| 512 | points = [(100., 0.25),(0.5, 0.5), (39,20), (0.6,0.7),(56,43),(67,90) ] |
|---|
| 513 | inside, outside = in_and_outside_polygon( points, polygon) |
|---|
| 514 | assert (inside, [1,3]) |
|---|
| 515 | assert (outside, [0,2,4,5]) |
|---|
| 516 | |
|---|
| 517 | def zzztest_inside_polygon_main(self): |
|---|
| 518 | print "inside",inside |
|---|
| 519 | print "outside",outside |
|---|
| 520 | |
|---|
| 521 | assert not inside_polygon( (0.5, 1.5), polygon ) |
|---|
| 522 | assert not inside_polygon( (0.5, -0.5), polygon ) |
|---|
| 523 | assert not inside_polygon( (-0.5, 0.5), polygon ) |
|---|
| 524 | assert not inside_polygon( (1.5, 0.5), polygon ) |
|---|
| 525 | |
|---|
| 526 | #Try point on borders |
|---|
| 527 | assert inside_polygon( (1., 0.5), polygon, closed=True) |
|---|
| 528 | assert inside_polygon( (0.5, 1), polygon, closed=True) |
|---|
| 529 | assert inside_polygon( (0., 0.5), polygon, closed=True) |
|---|
| 530 | assert inside_polygon( (0.5, 0.), polygon, closed=True) |
|---|
| 531 | |
|---|
| 532 | assert not inside_polygon( (0.5, 1), polygon, closed=False) |
|---|
| 533 | assert not inside_polygon( (0., 0.5), polygon, closed=False) |
|---|
| 534 | assert not inside_polygon( (0.5, 0.), polygon, closed=False) |
|---|
| 535 | assert not inside_polygon( (1., 0.5), polygon, closed=False) |
|---|
| 536 | |
|---|
| 537 | |
|---|
| 538 | |
|---|
| 539 | #From real example (that failed) |
|---|
| 540 | polygon = [[20,20], [40,20], [40,40], [20,40]] |
|---|
| 541 | points = [ [40, 50] ] |
|---|
| 542 | res = inside_polygon(points, polygon) |
|---|
| 543 | assert len(res) == 0 |
|---|
| 544 | |
|---|
| 545 | polygon = [[20,20], [40,20], [40,40], [20,40]] |
|---|
| 546 | points = [ [25, 25], [30, 20], [40, 50], [90, 20], [40, 90] ] |
|---|
| 547 | res = inside_polygon(points, polygon) |
|---|
| 548 | assert len(res) == 2 |
|---|
| 549 | assert allclose(res, [0,1]) |
|---|
| 550 | |
|---|
| 551 | def test_polygon_area(self): |
|---|
| 552 | |
|---|
| 553 | #Simplest case: Polygon is the unit square |
|---|
| 554 | polygon = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 555 | assert polygon_area(polygon) == 1 |
|---|
| 556 | |
|---|
| 557 | #Simple case: Polygon is a rectangle |
|---|
| 558 | polygon = [[0,0], [1,0], [1,4], [0,4]] |
|---|
| 559 | assert polygon_area(polygon) == 4 |
|---|
| 560 | |
|---|
| 561 | #Simple case: Polygon is a unit triangle |
|---|
| 562 | polygon = [[0,0], [1,0], [0,1]] |
|---|
| 563 | assert polygon_area(polygon) == 0.5 |
|---|
| 564 | |
|---|
| 565 | #Simple case: Polygon is a diamond |
|---|
| 566 | polygon = [[0,0], [1,1], [2,0], [1, -1]] |
|---|
| 567 | assert polygon_area(polygon) == 2.0 |
|---|
| 568 | |
|---|
| 569 | def test_poly_xy(self): |
|---|
| 570 | |
|---|
| 571 | #Simplest case: Polygon is the unit square |
|---|
| 572 | polygon = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 573 | x, y = poly_xy(polygon) |
|---|
| 574 | assert len(x) == len(polygon)+1 |
|---|
| 575 | assert len(y) == len(polygon)+1 |
|---|
| 576 | assert x[0] == 0 |
|---|
| 577 | assert x[1] == 1 |
|---|
| 578 | assert x[2] == 1 |
|---|
| 579 | assert x[3] == 0 |
|---|
| 580 | assert y[0] == 0 |
|---|
| 581 | assert y[1] == 0 |
|---|
| 582 | assert y[2] == 1 |
|---|
| 583 | assert y[3] == 1 |
|---|
| 584 | |
|---|
| 585 | #Arbitrary polygon |
|---|
| 586 | polygon = [[1,5], [1,1], [100,10], [1,10], [3,6]] |
|---|
| 587 | x, y = poly_xy(polygon) |
|---|
| 588 | assert len(x) == len(polygon)+1 |
|---|
| 589 | assert len(y) == len(polygon)+1 |
|---|
| 590 | assert x[0] == 1 |
|---|
| 591 | assert x[1] == 1 |
|---|
| 592 | assert x[2] == 100 |
|---|
| 593 | assert x[3] == 1 |
|---|
| 594 | assert x[4] == 3 |
|---|
| 595 | assert y[0] == 5 |
|---|
| 596 | assert y[1] == 1 |
|---|
| 597 | assert y[2] == 10 |
|---|
| 598 | assert y[3] == 10 |
|---|
| 599 | assert y[4] == 6 |
|---|
| 600 | |
|---|
| 601 | def test_plot_polygons(self): |
|---|
| 602 | |
|---|
| 603 | import os |
|---|
| 604 | |
|---|
| 605 | #Simplest case: Polygon is the unit square |
|---|
| 606 | polygon1 = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 607 | polygon2 = [[1,1], [2,1], [3,2], [2,2]] |
|---|
| 608 | v = plot_polygons([polygon1, polygon2],'test1') |
|---|
| 609 | assert len(v) == 4 |
|---|
| 610 | assert v[0] == 0 |
|---|
| 611 | assert v[1] == 3 |
|---|
| 612 | assert v[2] == 0 |
|---|
| 613 | assert v[3] == 2 |
|---|
| 614 | |
|---|
| 615 | #Another case |
|---|
| 616 | polygon3 = [[1,5], [10,1], [100,10], [50,10], [3,6]] |
|---|
| 617 | v = plot_polygons([polygon2,polygon3],'test2') |
|---|
| 618 | assert len(v) == 4 |
|---|
| 619 | assert v[0] == 1 |
|---|
| 620 | assert v[1] == 100 |
|---|
| 621 | assert v[2] == 1 |
|---|
| 622 | assert v[3] == 10 |
|---|
| 623 | |
|---|
| 624 | os.remove('test1.png') |
|---|
| 625 | os.remove('test2.png') |
|---|
| 626 | |
|---|
| 627 | |
|---|
| 628 | def test_inside_polygon_geo_ref(self): |
|---|
| 629 | |
|---|
| 630 | |
|---|
| 631 | #Simplest case: Polygon is the unit square |
|---|
| 632 | polygon_absolute = [[0,0], [1,0], [1,1], [0,1]] |
|---|
| 633 | poly_geo_ref = Geo_reference(57,100,100) |
|---|
| 634 | polygon = poly_geo_ref.change_points_geo_ref(polygon_absolute) |
|---|
| 635 | |
|---|
| 636 | points_absolute = (0.5, 0.5) |
|---|
| 637 | points_geo_ref = Geo_reference(57,78,-56) |
|---|
| 638 | points = points_geo_ref.change_points_geo_ref(points_absolute) |
|---|
| 639 | |
|---|
| 640 | assert inside_polygon( points_absolute, polygon_absolute) |
|---|
| 641 | |
|---|
| 642 | points_inside = inside_polygon( points, polygon, |
|---|
| 643 | polygon_geo_ref=poly_geo_ref, |
|---|
| 644 | points_geo_ref=points_geo_ref) |
|---|
| 645 | #print "points_inside",points_inside |
|---|
| 646 | #assert 1 == len(inside_polygon( points, polygon, |
|---|
| 647 | # polygon_geo_ref=poly_geo_ref, |
|---|
| 648 | # points_geo_ref=points_geo_ref)) |
|---|
| 649 | assert not inside_polygon( (0.5, 1.5), polygon, |
|---|
| 650 | polygon_geo_ref= poly_geo_ref ) |
|---|
| 651 | assert not inside_polygon( (0.5, -0.5), polygon, |
|---|
| 652 | polygon_geo_ref= poly_geo_ref ) |
|---|
| 653 | assert not inside_polygon( (-0.5, 0.5), polygon, |
|---|
| 654 | polygon_geo_ref= poly_geo_ref ) |
|---|
| 655 | assert not inside_polygon( (1.5, 0.5), polygon, |
|---|
| 656 | polygon_geo_ref= poly_geo_ref ) |
|---|
| 657 | #------------------------------------------------------------- |
|---|
| 658 | if __name__ == "__main__": |
|---|
| 659 | suite = unittest.makeSuite(Test_Polygon,'test') |
|---|
| 660 | #suite = unittest.makeSuite(Test_Polygon,'test_inside_polygon_geo_ref') |
|---|
| 661 | runner = unittest.TextTestRunner() |
|---|
| 662 | runner.run(suite) |
|---|
| 663 | |
|---|
| 664 | |
|---|
| 665 | |
|---|
| 666 | |
|---|
