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<?php |
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namespace Bavix\Geo; |
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use Bavix\Geo\Unit\Distance; |
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use Bavix\Geo\Value\Axis; |
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/** |
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* Class Coordinate |
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* |
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* @package Bavix\Geo |
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* |
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* @property-read Axis $latitude |
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* @property-read Axis $longitude |
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*/ |
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class Coordinate implements \JsonSerializable |
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{ |
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/** |
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* @var array |
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*/ |
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protected $getter = [ |
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'latitude' => true, |
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'longitude' => true, |
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]; |
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/** |
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* @var Axis |
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*/ |
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protected $latitude; |
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/** |
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* @var Axis |
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*/ |
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protected $longitude; |
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/** |
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* Coordinate constructor. |
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* @param float $latitude |
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* @param float $longitude |
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*/ |
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public function __construct(float $latitude, float $longitude) |
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{ |
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$this->latitude = Axis::make(); |
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$this->latitude->degrees = $latitude; |
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$this->longitude = Axis::make(); |
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$this->longitude->degrees = $longitude; |
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} |
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/** |
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* @param string $name |
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* |
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* @return Axis |
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*/ |
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public function __get($name): Axis |
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{ |
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if (!isset($this->getter[$name])) { |
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throw new \InvalidArgumentException(__METHOD__); |
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} |
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return $this->$name->proxy(); |
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} |
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/** |
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* @param string $name |
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* @param mixed $value |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public function __set($name, $value) |
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{ |
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throw new \InvalidArgumentException(__METHOD__); |
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} |
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/** |
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* @param string $name |
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* |
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* @return bool |
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*/ |
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public function __isset(string $name): bool |
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{ |
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return isset($this->getter[$name]); |
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} |
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/** |
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* @see https://en.wikipedia.org/wiki/Great-circle_distance |
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* |
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* @param self $object |
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* |
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* @return Distance |
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*/ |
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public function distanceTo(self $object): Distance |
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{ |
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$theta = $this->longitude->radian - $object->longitude->radian; |
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$partSin = \sin($this->latitude->radian) * \sin($object->latitude->radian); |
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$partCos = \cos($this->latitude->radian) * \cos($object->latitude->radian) * \cos($theta); |
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$dist = \rad2deg(\acos($partSin + $partCos)); |
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return Distance::fromNauticalMiles($dist * 60.); |
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} |
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/** |
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* @param float $latitude |
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* @param float $longitude |
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* |
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* @return static |
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*/ |
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public static function make(float $latitude, float $longitude): self |
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{ |
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return new static($latitude, $longitude); |
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} |
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/** |
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* @param float|Axis $latitude |
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* @param float|Axis $longitude |
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* @return static |
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*/ |
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public function plus($latitude, $longitude): self |
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{ |
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$latitude = \is_object($latitude) ? $latitude->degrees : $latitude; |
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$longitude = \is_object($longitude) ? $longitude->degrees : $longitude; |
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return static::make( |
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$this->latitude->degrees + $latitude, |
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$this->longitude->degrees + $longitude |
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); |
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} |
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/** |
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* @param float|Axis $latitude |
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* @param float|Axis $longitude |
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* @return static |
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*/ |
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public function minus($latitude, $longitude): self |
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{ |
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return $this->plus( |
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-$latitude, |
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-$longitude |
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); |
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} |
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/** |
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* @return array |
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*/ |
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public function jsonSerialize(): array |
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{ |
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return [ |
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'latitude' => $this->latitude, |
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'longitude' => $this->longitude, |
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]; |
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} |
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} |
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bavix /
geo
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