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<?php |
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declare(strict_types=1); |
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namespace Phpgeo; |
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use InvalidArgumentException; |
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/** |
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* Bounds Class. |
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* |
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* @author Marcus Jaschen <[email protected]> |
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*/ |
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class Bounds |
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{ |
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/** |
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* @var Point |
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*/ |
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protected $northWest; |
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/** |
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* @var Point |
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*/ |
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protected $southEast; |
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/** |
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* @param Point $northWest |
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* @param Point $southEast |
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*/ |
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public function __construct(Point $northWest, Point $southEast) |
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{ |
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$this->northWest = $northWest; |
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$this->southEast = $southEast; |
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} |
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/** |
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* Getter |
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* |
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* @return Point |
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*/ |
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public function getNorthWest(): Point |
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{ |
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return $this->northWest; |
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} |
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/** |
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* Getter |
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* |
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* @return Point |
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*/ |
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public function getSouthEast(): Point |
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{ |
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return $this->southEast; |
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} |
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/** |
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* @return float |
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*/ |
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public function getNorth(): float |
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{ |
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return $this->northWest->getLat(); |
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} |
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/** |
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* @return float |
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*/ |
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public function getSouth(): float |
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{ |
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return $this->southEast->getLat(); |
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} |
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/** |
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* @return float |
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*/ |
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public function getWest(): float |
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{ |
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return $this->northWest->getLng(); |
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} |
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/** |
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* @return float |
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*/ |
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public function getEast(): float |
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{ |
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return $this->southEast->getLng(); |
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} |
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/** |
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* Calculates the center of this bounds object and returns it as a |
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* Point instance. |
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* |
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* @return Point |
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* @throws InvalidArgumentException |
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*/ |
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public function getCenter(): Point |
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{ |
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$centerLat = ($this->getNorth() + $this->getSouth()) / 2; |
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return new Point($centerLat, $this->getCenterLng()); |
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} |
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/** |
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* @return float |
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*/ |
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protected function getCenterLng(): float |
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{ |
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$centerLng = ($this->getEast() + $this->getWest()) / 2; |
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$overlap = $this->getWest() > 0 && $this->getEast() < 0; |
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if ($overlap && $centerLng > 0) { |
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return -180.0 + $centerLng; |
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} |
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if ($overlap && $centerLng < 0) { |
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return 180.0 + $centerLng; |
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} |
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if ($overlap && $centerLng == 0) { |
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return 180.0; |
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} |
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return $centerLng; |
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} |
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} |
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mjaschen /
phpgeo
