| Total Complexity | 76 |
| Total Lines | 538 |
| Duplicated Lines | 0 % |
| Changes | 7 | ||
| Bugs | 0 | Features | 1 |
Complex classes like Point often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Point, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
||
| 12 | class Point extends Geometry |
||
| 13 | { |
||
| 14 | |||
| 15 | /** |
||
| 16 | * @var float|null |
||
| 17 | */ |
||
| 18 | public $x = null; |
||
| 19 | |||
| 20 | /** |
||
| 21 | * @var float|null |
||
| 22 | */ |
||
| 23 | public $y = null; |
||
| 24 | |||
| 25 | /** |
||
| 26 | * @var float|null |
||
| 27 | */ |
||
| 28 | public $z = null; |
||
| 29 | |||
| 30 | /** |
||
| 31 | * @var float|null |
||
| 32 | */ |
||
| 33 | public $m = null; |
||
| 34 | |||
| 35 | /** |
||
| 36 | * Constructor |
||
| 37 | * |
||
| 38 | * @param mixed $x The x coordinate (or longitude) |
||
| 39 | * @param mixed $y The y coordinate (or latitude) |
||
| 40 | * @param mixed $z The z coordinate (or altitude) - optional |
||
| 41 | * @param mixed $m Measure - optional |
||
| 42 | * @throws InvalidGeometryException |
||
| 43 | */ |
||
| 44 | public function __construct($x = null, $y = null, $z = null, $m = null) |
||
| 45 | { |
||
| 46 | // If X or Y is null than it is an empty point |
||
| 47 | if ($x !== null && $y !== null) { |
||
| 48 | // Basic validation on x and y |
||
| 49 | if (!is_numeric($x) || !is_numeric($y)) { |
||
| 50 | throw new InvalidGeometryException("Cannot construct Point. x and y should be numeric"); |
||
| 51 | } |
||
| 52 | |||
| 53 | // Convert to float in case they are passed in as a string or integer etc. |
||
| 54 | $this->x = floatval($x); |
||
| 55 | $this->y = floatval($y); |
||
| 56 | |||
| 57 | // Check to see if this point has Z (height) value |
||
| 58 | if ($z !== null) { |
||
| 59 | if (!is_numeric($z)) { |
||
| 60 | throw new InvalidGeometryException("Cannot construct Point. z should be numeric"); |
||
| 61 | } |
||
| 62 | $this->z = floatval($z); |
||
| 63 | } |
||
| 64 | |||
| 65 | // Check to see if this is a measure |
||
| 66 | if ($m !== null) { |
||
| 67 | if (!is_numeric($m)) { |
||
| 68 | throw new InvalidGeometryException("Cannot construct Point. m should be numeric"); |
||
| 69 | } |
||
| 70 | $this->m = floatval($m); |
||
| 71 | } |
||
| 72 | } |
||
| 73 | } |
||
| 74 | |||
| 75 | /** |
||
| 76 | * @param array<mixed> $coordinates |
||
| 77 | * @return Point |
||
| 78 | * @throws InvalidGeometryException |
||
| 79 | */ |
||
| 80 | public static function fromArray(array $coordinates) |
||
| 81 | { |
||
| 82 | /** @noinspection PhpIncompatibleReturnTypeInspection */ |
||
| 83 | return (new \ReflectionClass(get_called_class()))->newInstanceArgs($coordinates); |
||
| 84 | } |
||
| 85 | |||
| 86 | /** |
||
| 87 | * @return string "Point" |
||
| 88 | */ |
||
| 89 | public function geometryType(): string |
||
| 90 | { |
||
| 91 | return Geometry::POINT; |
||
| 92 | } |
||
| 93 | |||
| 94 | /** |
||
| 95 | * @return int 0 |
||
| 96 | */ |
||
| 97 | public function dimension(): int |
||
| 98 | { |
||
| 99 | return 0; |
||
| 100 | } |
||
| 101 | |||
| 102 | /** |
||
| 103 | * Get X (longitude) coordinate |
||
| 104 | * |
||
| 105 | * @return float|null The X coordinate |
||
| 106 | */ |
||
| 107 | public function getX() |
||
| 108 | { |
||
| 109 | return $this->x ?? null; |
||
| 110 | } |
||
| 111 | |||
| 112 | /** |
||
| 113 | * Returns Y (latitude) coordinate |
||
| 114 | * |
||
| 115 | * @return float|null The Y coordinate |
||
| 116 | */ |
||
| 117 | public function getY() |
||
| 118 | { |
||
| 119 | return $this->y ?? null; |
||
| 120 | } |
||
| 121 | |||
| 122 | /** |
||
| 123 | * Returns Z (altitude) coordinate |
||
| 124 | * |
||
| 125 | * @return float|null The Z coordinate or NULL if it is not a 3D point. |
||
| 126 | */ |
||
| 127 | public function getZ() |
||
| 128 | { |
||
| 129 | return $this->z ?? null; |
||
| 130 | } |
||
| 131 | |||
| 132 | /** |
||
| 133 | * Returns M (measured) value |
||
| 134 | * |
||
| 135 | * @return float|null The measured value |
||
| 136 | */ |
||
| 137 | public function getM() |
||
| 138 | { |
||
| 139 | return $this->m ?? null; |
||
| 140 | } |
||
| 141 | |||
| 142 | /** |
||
| 143 | * check if Geometry has a measure value |
||
| 144 | * |
||
| 145 | * @return bool true if collection has measure values |
||
| 146 | */ |
||
| 147 | public function isMeasured(): bool |
||
| 150 | } |
||
| 151 | |||
| 152 | /** |
||
| 153 | * check if Geometry has Z (altitude) coordinate |
||
| 154 | * |
||
| 155 | * @return bool true if geometry has a Z-value |
||
| 156 | */ |
||
| 157 | public function hasZ(): bool |
||
| 158 | { |
||
| 159 | return $this->getZ() !== null; |
||
| 160 | } |
||
| 161 | |||
| 162 | /** |
||
| 163 | * Inverts x and y coordinates |
||
| 164 | * Useful if old applications still use lng lat |
||
| 165 | * |
||
| 166 | * @return self |
||
| 167 | * */ |
||
| 168 | public function invertXY() |
||
| 169 | { |
||
| 170 | $x = $this->x; |
||
| 171 | $this->x = $this->y; |
||
| 172 | $this->y = $x; |
||
| 173 | $this->setGeos(null); |
||
| 174 | return $this; |
||
| 175 | } |
||
| 176 | |||
| 177 | /** |
||
| 178 | * A point's centroid is itself |
||
| 179 | * |
||
| 180 | * @return Point object itself |
||
| 181 | */ |
||
| 182 | public function getCentroid(): Point |
||
| 183 | { |
||
| 184 | return $this; |
||
| 185 | } |
||
| 186 | |||
| 187 | /** |
||
| 188 | * @return array{'minx'?:float|null, 'miny'?:float|null, 'maxx'?:float|null, 'maxy'?:float|null} |
||
| 189 | */ |
||
| 190 | public function getBBox(): array |
||
| 191 | { |
||
| 192 | if ($this->isEmpty()) { |
||
| 193 | return []; |
||
| 194 | } |
||
| 195 | |||
| 196 | return [ |
||
| 197 | 'maxy' => $this->getY(), |
||
| 198 | 'miny' => $this->getY(), |
||
| 199 | 'maxx' => $this->getX(), |
||
| 200 | 'minx' => $this->getX(), |
||
| 201 | ]; |
||
| 202 | } |
||
| 203 | |||
| 204 | /** |
||
| 205 | * @return array<int, mixed> |
||
| 206 | */ |
||
| 207 | public function asArray(): array |
||
| 208 | { |
||
| 209 | if ($this->isEmpty()) { |
||
| 210 | return [null, null]; |
||
|
|
|||
| 211 | } |
||
| 212 | if (!$this->hasZ()) { |
||
| 213 | return !$this->isMeasured() ? [$this->x, $this->y] : [$this->x, $this->y, null, $this->m]; |
||
| 214 | } |
||
| 215 | |||
| 216 | return !$this->isMeasured() ? [$this->x, $this->y, $this->z] : [$this->x, $this->y, $this->z, $this->m]; |
||
| 217 | } |
||
| 218 | |||
| 219 | /** |
||
| 220 | * The boundary of a Point is the empty set. |
||
| 221 | * |
||
| 222 | * @return GeometryCollection |
||
| 223 | */ |
||
| 224 | public function boundary(): Geometry |
||
| 225 | { |
||
| 226 | return new GeometryCollection(); |
||
| 227 | } |
||
| 228 | |||
| 229 | /** |
||
| 230 | * @return bool |
||
| 231 | */ |
||
| 232 | public function isEmpty(): bool |
||
| 233 | { |
||
| 234 | return $this->x === null; |
||
| 235 | } |
||
| 236 | |||
| 237 | /** |
||
| 238 | * @return int Returns always 1 |
||
| 239 | */ |
||
| 240 | public function numPoints(): int |
||
| 241 | { |
||
| 242 | return 1; |
||
| 243 | } |
||
| 244 | |||
| 245 | /** |
||
| 246 | * @return Point[] |
||
| 247 | */ |
||
| 248 | public function getPoints(): array |
||
| 249 | { |
||
| 250 | return [$this]; |
||
| 251 | } |
||
| 252 | |||
| 253 | /** |
||
| 254 | * @return Point[] |
||
| 255 | */ |
||
| 256 | public function getComponents(): array |
||
| 257 | { |
||
| 258 | return [$this]; |
||
| 259 | } |
||
| 260 | |||
| 261 | /** |
||
| 262 | * Determines weather the specified geometry is spatially equal to this Point |
||
| 263 | * |
||
| 264 | * Because of limited floating point precision in PHP, equality can be only approximated |
||
| 265 | * |
||
| 266 | * @see: http://php.net/manual/en/function.bccomp.php |
||
| 267 | * @see: http://php.net/manual/en/language.types.float.php |
||
| 268 | * |
||
| 269 | * @param Point|Geometry $geometry |
||
| 270 | * |
||
| 271 | * @return bool |
||
| 272 | */ |
||
| 273 | public function equals(Geometry $geometry): bool |
||
| 274 | { |
||
| 275 | return $geometry->geometryType() === Geometry::POINT |
||
| 276 | ? (abs(($this->getX() ?? 0) - ($geometry->getX() ?? 0)) <= 1.0E-9 && |
||
| 277 | abs(($this->getY() ?? 0) - ($geometry->getY() ?? 0)) <= 1.0E-9 && |
||
| 278 | abs(($this->getZ() ?? 0) - ($geometry->getZ() ?? 0)) <= 1.0E-9) |
||
| 279 | : false; |
||
| 280 | } |
||
| 281 | |||
| 282 | /** |
||
| 283 | * @return bool always true |
||
| 284 | */ |
||
| 285 | public function isSimple(): bool |
||
| 286 | { |
||
| 287 | return true; |
||
| 288 | } |
||
| 289 | |||
| 290 | /** |
||
| 291 | * @return bool |
||
| 292 | */ |
||
| 293 | public function isValid(): bool |
||
| 296 | } |
||
| 297 | |||
| 298 | /** |
||
| 299 | * resets/empties all values |
||
| 300 | * @return void |
||
| 301 | */ |
||
| 302 | public function flatten() |
||
| 307 | } |
||
| 308 | |||
| 309 | /** |
||
| 310 | * @param Geometry|Collection $geometry |
||
| 311 | * @return float|null |
||
| 312 | */ |
||
| 313 | public function distance(Geometry $geometry) |
||
| 314 | { |
||
| 315 | if ($this->isEmpty() || $geometry->isEmpty()) { |
||
| 316 | return null; |
||
| 317 | } |
||
| 318 | |||
| 319 | // use GEOS if available |
||
| 320 | $geosObj = $this->getGeos(); |
||
| 321 | if (is_object($geosObj)) { |
||
| 322 | // @codeCoverageIgnoreStart |
||
| 323 | /** @noinspection PhpUndefinedMethodInspection */ |
||
| 324 | $geosObj2 = $geometry->getGeos(); |
||
| 325 | return is_object($geosObj2) ? $geosObj->distance($geosObj2) : null; |
||
| 326 | // @codeCoverageIgnoreEnd |
||
| 327 | } |
||
| 328 | |||
| 329 | switch ($geometry->geometryType()) { |
||
| 330 | // Point |
||
| 331 | case Geometry::POINT: |
||
| 332 | return sqrt( |
||
| 333 | pow(($this->getX() - $geometry->getX()), 2) + |
||
| 334 | pow(($this->getY() - $geometry->getY()), 2) |
||
| 335 | ); |
||
| 336 | |||
| 337 | // MultiPoint, GeometryCollection |
||
| 338 | case Geometry::MULTI_POINT: |
||
| 339 | case Geometry::GEOMETRY_COLLECTION: |
||
| 340 | return $this->distanceToMultiPointOrCollection($geometry); |
||
| 341 | |||
| 342 | // LineString, Polygon, MultiLineString, MultiPolygon. |
||
| 343 | default: |
||
| 344 | return $this->distanceToMultiGeometry($geometry); |
||
| 345 | } |
||
| 346 | } |
||
| 347 | |||
| 348 | /** |
||
| 349 | * @param Geometry|Collection $geometry |
||
| 350 | * @return float|null |
||
| 351 | */ |
||
| 352 | private function distanceToMultiPointOrCollection($geometry) |
||
| 353 | { |
||
| 354 | $distance = null; |
||
| 355 | foreach ($geometry->getComponents() as $component) { |
||
| 356 | $checkDistance = $this->distance($component); |
||
| 357 | if ($checkDistance === 0.0) { |
||
| 358 | return 0.0; |
||
| 359 | } |
||
| 360 | if ($checkDistance === null) { |
||
| 361 | continue; |
||
| 362 | } |
||
| 363 | $distance = $distance ?? $checkDistance; |
||
| 364 | |||
| 365 | if ($checkDistance < $distance) { |
||
| 366 | $distance = $checkDistance; |
||
| 367 | } |
||
| 368 | } |
||
| 369 | |||
| 370 | return $distance; |
||
| 371 | } |
||
| 372 | |||
| 373 | /** |
||
| 374 | * @param Geometry $geometry |
||
| 375 | * @return float|null |
||
| 376 | */ |
||
| 377 | private function distanceToMultiGeometry(Geometry $geometry) |
||
| 378 | { |
||
| 379 | // The nearest point might be a vertex, but it could also be somewhere along a line-segment |
||
| 380 | // that makes up the geometry (between vertices). |
||
| 381 | // Here we brute force check all line segments that make up these geometries. |
||
| 382 | $distance = null; |
||
| 383 | /** @var Point[] $seg */ |
||
| 384 | foreach ($geometry->explode(true) as $seg) { |
||
| 385 | // As per http://stackoverflow.com/questions/849211/shortest-distance-between-a-point-and-a-line-segment |
||
| 386 | // and http://paulbourke.net/geometry/pointline/ |
||
| 387 | $x1 = $seg[0]->getX(); |
||
| 388 | $y1 = $seg[0]->getY(); |
||
| 389 | $x2 = $seg[1]->getX(); |
||
| 390 | $y2 = $seg[1]->getY(); |
||
| 391 | $px = $x2 - $x1; |
||
| 392 | $py = $y2 - $y1; |
||
| 393 | $d = ($px * $px) + ($py * $py); |
||
| 394 | if ($d == 0) { |
||
| 395 | // Line-segment's endpoints are identical. This is merely a point masquerading a line-segment. |
||
| 396 | $checkDistance = $this->distance($seg[1]); |
||
| 397 | } else { |
||
| 398 | $x3 = $this->getX(); |
||
| 399 | $y3 = $this->getY(); |
||
| 400 | $u = ((($x3 - $x1) * $px) + (($y3 - $y1) * $py)) / $d; |
||
| 401 | if ($u > 1) { |
||
| 402 | $u = 1; |
||
| 403 | } |
||
| 404 | if ($u < 0) { |
||
| 405 | $u = 0; |
||
| 406 | } |
||
| 407 | $x = $x1 + ($u * $px); |
||
| 408 | $y = $y1 + ($u * $py); |
||
| 409 | $dx = $x - $x3; |
||
| 410 | $dy = $y - $y3; |
||
| 411 | $checkDistance = sqrt(($dx * $dx) + ($dy * $dy)); |
||
| 412 | } |
||
| 413 | |||
| 414 | if ($checkDistance === 0.0) { |
||
| 415 | return 0.0; |
||
| 416 | } |
||
| 417 | if ($checkDistance === null) { |
||
| 418 | continue; |
||
| 419 | } |
||
| 420 | $distance = ($distance ?? $checkDistance); |
||
| 421 | |||
| 422 | if ($checkDistance < $distance) { |
||
| 423 | $distance = $checkDistance; |
||
| 424 | } |
||
| 425 | } |
||
| 426 | |||
| 427 | return $distance; |
||
| 428 | } |
||
| 429 | |||
| 430 | /** |
||
| 431 | * @return float|int|null |
||
| 432 | */ |
||
| 433 | public function minimumZ() |
||
| 434 | { |
||
| 435 | return $this->z; |
||
| 436 | } |
||
| 437 | |||
| 438 | /** |
||
| 439 | * @return float|int|null |
||
| 440 | */ |
||
| 441 | public function maximumZ() |
||
| 442 | { |
||
| 443 | return $this->z; |
||
| 444 | } |
||
| 445 | |||
| 446 | /** |
||
| 447 | * @return float|int|null |
||
| 448 | */ |
||
| 449 | public function minimumM() |
||
| 450 | { |
||
| 451 | return $this->m; |
||
| 452 | } |
||
| 453 | |||
| 454 | /** |
||
| 455 | * @return float|int|null |
||
| 456 | */ |
||
| 457 | public function maximumM() |
||
| 458 | { |
||
| 459 | return $this->m; |
||
| 460 | } |
||
| 461 | |||
| 462 | /** |
||
| 463 | * @return float 0.0 |
||
| 464 | */ |
||
| 465 | public function getArea(): float |
||
| 466 | { |
||
| 467 | return 0.0; |
||
| 468 | } |
||
| 469 | |||
| 470 | /** |
||
| 471 | * @return float 0.0 |
||
| 472 | */ |
||
| 473 | public function getLength(): float |
||
| 474 | { |
||
| 475 | return 0.0; |
||
| 476 | } |
||
| 477 | |||
| 478 | /** |
||
| 479 | * @return float 0.0 |
||
| 480 | */ |
||
| 481 | public function length3D(): float |
||
| 484 | } |
||
| 485 | |||
| 486 | /** |
||
| 487 | * @param float|int $radius |
||
| 488 | * @return float 0.0 |
||
| 489 | */ |
||
| 490 | public function greatCircleLength($radius = geoPHP::EARTH_WGS84_SEMI_MAJOR_AXIS): float |
||
| 491 | { |
||
| 492 | return 0.0; |
||
| 493 | } |
||
| 494 | |||
| 495 | /** |
||
| 496 | * @return float 0.0 |
||
| 497 | */ |
||
| 498 | public function haversineLength(): float |
||
| 499 | { |
||
| 500 | return 0.0; |
||
| 501 | } |
||
| 502 | |||
| 503 | /** |
||
| 504 | * @return int 1 |
||
| 505 | */ |
||
| 506 | public function numGeometries(): int |
||
| 507 | { |
||
| 508 | return $this->isEmpty() ? 0 : 1; |
||
| 509 | } |
||
| 510 | |||
| 511 | /** |
||
| 512 | * @param int $n |
||
| 513 | * @return Point|null |
||
| 514 | */ |
||
| 515 | public function geometryN(int $n) |
||
| 516 | { |
||
| 517 | return $n === 1 ? $this : null; |
||
| 518 | } |
||
| 519 | |||
| 520 | /** |
||
| 521 | * @return bool true |
||
| 522 | */ |
||
| 523 | public function isClosed(): bool |
||
| 524 | { |
||
| 525 | return true; |
||
| 526 | } |
||
| 527 | |||
| 528 | /** |
||
| 529 | * Not valid for this geometry type |
||
| 530 | * |
||
| 531 | * @param bool $toArray default false |
||
| 532 | * @return array{} |
||
| 533 | */ |
||
| 534 | public function explode(bool $toArray = false): array |
||
| 535 | { |
||
| 536 | return []; |
||
| 537 | } |
||
| 538 | |||
| 539 | /** |
||
| 540 | * @param int|float $dx |
||
| 541 | * @param int|float $dy |
||
| 542 | * @param int|float $dz |
||
| 543 | * @return void |
||
| 544 | */ |
||
| 545 | public function translate($dx = 0, $dy = 0, $dz = 0) |
||
| 550 | } |
||
| 551 | } |
||
| 552 |
In the issue above, the returned value is violating the contract defined by the mentioned interface.
Let's take a look at an example: