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<?php |
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/* |
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* This file is part of the Geotools library. |
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* |
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* (c) Antoine Corcy <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace League\Geotools\BoundingBox; |
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use League\Geotools\Coordinate\Coordinate; |
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use League\Geotools\Coordinate\CoordinateCollection; |
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use League\Geotools\Coordinate\CoordinateInterface; |
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use League\Geotools\Coordinate\Ellipsoid; |
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use League\Geotools\Exception\InvalidArgumentException; |
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use League\Geotools\Polygon\Polygon; |
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use League\Geotools\Polygon\PolygonInterface; |
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/** |
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* @author Gabriel Bull <[email protected]> |
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*/ |
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class BoundingBox implements BoundingBoxInterface |
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{ |
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/** |
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* The latitude of the north coordinate |
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* |
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* @var float|string|integer |
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*/ |
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private $north; |
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/** |
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* The longitude of the east coordinate |
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* |
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* @var float|string|integer |
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*/ |
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private $east; |
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/** |
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* The latitude of the south coordinate |
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* |
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* @var float|string|integer |
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*/ |
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private $south; |
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/** |
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* The longitude of the west coordinate |
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* |
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* @var float|string|integer |
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*/ |
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private $west; |
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/** |
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* @var boolean |
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*/ |
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private $hasCoordinate = false; |
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/** |
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* @var Ellipsoid |
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*/ |
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private $ellipsoid; |
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/** |
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* @var integer |
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*/ |
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private $precision = 8; |
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/** |
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* @param PolygonInterface|CoordinateInterface $object |
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*/ |
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public function __construct($object = null) |
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{ |
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if ($object instanceof PolygonInterface) { |
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$this->setPolygon($object); |
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} elseif ($object instanceof CoordinateInterface) { |
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$this->addCoordinate($object); |
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} elseif (null !== $object) { |
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throw new \InvalidArgumentException; |
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} |
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} |
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private function createBoundingBoxForPolygon(PolygonInterface $polygon) |
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{ |
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$this->hasCoordinate = false; |
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$this->west = $this->east = $this->north = $this->south = null; |
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foreach ($polygon->getCoordinates() as $coordinate) { |
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$this->addCoordinate($coordinate); |
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} |
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} |
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/** |
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* @param CoordinateInterface $coordinate |
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*/ |
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private function addCoordinate(CoordinateInterface $coordinate) |
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{ |
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if ($this->ellipsoid === null) { |
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$this->ellipsoid = $coordinate->getEllipsoid(); |
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} elseif ($this->ellipsoid != $coordinate->getEllipsoid()) { |
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throw new InvalidArgumentException("Ellipsoids don't match"); |
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} |
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$latitude = $coordinate->getLatitude(); |
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$longitude = $coordinate->getLongitude(); |
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if (!$this->hasCoordinate) { |
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$this->setNorth($latitude); |
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$this->setSouth($latitude); |
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$this->setEast($longitude); |
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$this->setWest($longitude); |
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} else { |
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if (bccomp($latitude, $this->getSouth(), $this->getPrecision()) === -1) { |
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$this->setSouth($latitude); |
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} |
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if (bccomp($latitude, $this->getNorth(), $this->getPrecision()) === 1) { |
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$this->setNorth($latitude); |
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} |
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if (bccomp($longitude, $this->getEast(), $this->getPrecision()) === 1) { |
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$this->setEast($longitude); |
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} |
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if (bccomp($longitude, $this->getWest(), $this->getPrecision()) === -1) { |
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$this->setWest($longitude); |
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} |
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} |
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$this->hasCoordinate = true; |
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} |
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/** |
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* @param CoordinateInterface $coordinate |
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* @return bool |
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*/ |
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public function pointInBoundingBox(CoordinateInterface $coordinate) |
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{ |
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if (bccomp($coordinate->getLatitude(), $this->getSouth(), $this->getPrecision()) === -1 || |
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bccomp($coordinate->getLatitude(), $this->getNorth(), $this->getPrecision()) === 1 || |
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bccomp($coordinate->getLongitude(), $this->getEast(), $this->getPrecision()) === 1 || |
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bccomp($coordinate->getLongitude(), $this->getWest(), $this->getPrecision()) === -1 |
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) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @return PolygonInterface |
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*/ |
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public function getAsPolygon() |
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{ |
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if (!$this->hasCoordinate) { |
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return null; |
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} |
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$nw = new Coordinate(array($this->north, $this->west), $this->ellipsoid); |
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return new Polygon( |
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new CoordinateCollection( |
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array( |
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$nw, |
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new Coordinate(array($this->north, $this->east), $this->ellipsoid), |
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new Coordinate(array($this->south, $this->east), $this->ellipsoid), |
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new Coordinate(array($this->south, $this->west), $this->ellipsoid), |
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$nw |
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), |
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$this->ellipsoid |
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) |
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); |
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} |
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/** |
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* @param PolygonInterface $polygon |
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* @return $this |
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*/ |
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public function setPolygon(PolygonInterface $polygon) |
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{ |
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$this->createBoundingBoxForPolygon($polygon); |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getNorth() |
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{ |
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return $this->north; |
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} |
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/** |
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* @param float|string|integer $north |
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* @return $this |
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*/ |
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public function setNorth($north) |
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{ |
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$this->north = $north; |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getEast() |
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{ |
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return $this->east; |
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} |
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/** |
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* @param float|string|integer $east |
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* @return $this |
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*/ |
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public function setEast($east) |
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{ |
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$this->east = $east; |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getSouth() |
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{ |
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return $this->south; |
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} |
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/** |
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* @param float|string|integer $south |
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* @return $this |
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*/ |
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public function setSouth($south) |
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{ |
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$this->south = $south; |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getWest() |
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{ |
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return $this->west; |
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} |
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/** |
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* @param float|string|integer $west |
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* @return $this |
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*/ |
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public function setWest($west) |
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{ |
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$this->west = $west; |
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return $this; |
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} |
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/** |
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* @return integer |
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*/ |
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public function getPrecision() |
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{ |
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return $this->precision; |
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} |
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/** |
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* @param integer $precision |
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* @return $this |
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*/ |
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public function setPrecision($precision) |
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{ |
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$this->precision = $precision; |
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return $this; |
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} |
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/** |
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* @param BoundingBoxInterface $boundingBox |
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* @return BoundingBoxInterface |
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*/ |
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public function merge(BoundingBoxInterface $boundingBox) |
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{ |
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$bbox = clone $this; |
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$newCoordinates = $boundingBox->getAsPolygon()->getCoordinates(); |
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foreach ($newCoordinates as $coordinate) { |
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$bbox->addCoordinate($coordinate); |
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} |
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return $bbox; |
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} |
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} |
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thephpleague /
geotools
