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<?php |
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/** |
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* Coordinate Implementation |
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* |
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* PHP version 5.3 |
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* |
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* @category Location |
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* @author Marcus Jaschen <[email protected]> |
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* @license https://opensource.org/licenses/GPL-3.0 GPL |
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* @link https://github.com/mjaschen/phpgeo |
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*/ |
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namespace Location; |
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use Location\Distance\DistanceInterface; |
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use Location\Formatter\Coordinate\FormatterInterface; |
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/** |
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* Coordinate Implementation |
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* |
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* @category Location |
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* @author Marcus Jaschen <[email protected]> |
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* @license https://opensource.org/licenses/GPL-3.0 GPL |
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* @link https://github.com/mjaschen/phpgeo |
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*/ |
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class Coordinate implements GeometryInterface |
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{ |
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/** |
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* @var float |
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*/ |
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protected $lat; |
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/** |
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* @var float |
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*/ |
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protected $lng; |
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/** |
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* @var Ellipsoid |
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*/ |
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protected $ellipsoid; |
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/** |
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* @param float $lat -90.0 .. +90.0 |
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* @param float $lng -180.0 .. +180.0 |
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* @param Ellipsoid $ellipsoid if omitted, WGS-84 is used |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public function __construct($lat, $lng, Ellipsoid $ellipsoid = null) |
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{ |
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if (! $this->isValidLatitude($lat)) { |
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throw new \InvalidArgumentException("Latitude value must be numeric -90.0 .. +90.0 (given: {$lat})"); |
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} |
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if (! $this->isValidLongitude($lng)) { |
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throw new \InvalidArgumentException("Longitude value must be numeric -180.0 .. +180.0 (given: {$lng})"); |
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} |
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$this->lat = doubleval($lat); |
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$this->lng = doubleval($lng); |
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if ($ellipsoid !== null) { |
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$this->ellipsoid = $ellipsoid; |
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} else { |
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$this->ellipsoid = Ellipsoid::createDefault(); |
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} |
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} |
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/** |
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* @return float |
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*/ |
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public function getLat() |
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{ |
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return $this->lat; |
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} |
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/** |
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* @return float |
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*/ |
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public function getLng() |
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{ |
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return $this->lng; |
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} |
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/** |
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* Returns an array containing the point |
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* |
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* @return array |
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*/ |
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public function getPoints() |
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{ |
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return [$this]; |
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} |
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/** |
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* @return Ellipsoid |
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*/ |
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public function getEllipsoid() |
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{ |
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return $this->ellipsoid; |
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} |
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/** |
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* Calculates the distance between the given coordinate |
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* and this coordinate. |
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* |
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* @param Coordinate $coordinate |
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* @param DistanceInterface $calculator instance of distance calculation class |
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* |
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* @return float |
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*/ |
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public function getDistance(Coordinate $coordinate, DistanceInterface $calculator) |
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{ |
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return $calculator->getDistance($this, $coordinate); |
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} |
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/** |
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* @param FormatterInterface $formatter |
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* |
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* @return mixed |
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*/ |
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public function format(FormatterInterface $formatter) |
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{ |
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return $formatter->format($this); |
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} |
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/** |
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* Validates latitude |
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* |
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* @param mixed $latitude |
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* |
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* @return bool |
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*/ |
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protected function isValidLatitude($latitude) |
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{ |
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return $this->isNumericInBounds($latitude, - 90.0, 90.0); |
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} |
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/** |
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* Validates longitude |
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* |
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* @param mixed $longitude |
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* |
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* @return bool |
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*/ |
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protected function isValidLongitude($longitude) |
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{ |
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return $this->isNumericInBounds($longitude, - 180.0, 180.0); |
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} |
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/** |
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* Checks if the given value is (1) numeric, and (2) between lower |
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* and upper bounds (including the bounds values). |
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* |
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* @param float $value |
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* @param float $lower |
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* @param float $upper |
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* |
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* @return bool |
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*/ |
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protected function isNumericInBounds($value, $lower, $upper) |
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{ |
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if (! is_numeric($value)) { |
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return false; |
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} |
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if ($value < $lower || $value > $upper) { |
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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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mjaschen /
phpgeo
