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| 1 | <?php |
| 2 | namespace Fdsn\Webservices\Event\Structs; |
| 3 | |
| 4 | /** |
| 5 | * Data structure to handle Latitude,Longitude point |
| 6 | * |
| 7 | * @param float $latitude Latitude (-180~180) |
| 8 | * @param float $longitude Longitude (-180~180) |
| 9 | * |
| 10 | * @return true, if every check is passed, false otherwise |
| 11 | */ |
| 12 | class LatLon { |
| 13 | private float $lat; |
| 14 | private float $lon; |
| 15 | |
| 16 | /** |
| 17 | * Range of data validity |
| 18 | * @see https://www.fdsn.org/webservices/fdsnws-event-1.2.pdf FDSN official documentation |
| 19 | */ |
| 20 | private $validLatitude = array('min' => -90, 'max' => 90); |
| 21 | |
| 22 | /** |
| 23 | * Range of data validity |
| 24 | * @see FDSN Doc https://www.fdsn.org/webservices/fdsnws-event-1.2.pdf |
| 25 | */ |
| 26 | private $validLongitude = array('min' => -180, 'max' => 180); |
| 27 | |
| 28 | function __construct( float $latitude, float $longitude) { |
| 29 | |
| 30 | if( ! $this->isValidLatitude($latitude) ) |
| 31 | throw new \InvalidArgumentException("Latitude invalid"); |
| 32 | |
| 33 | if (! $this->isValidLongitude($longitude)) |
| 34 | throw new \InvalidArgumentException("Longitude invalid"); |
| 35 | |
| 36 | $this->lat = $latitude; |
| 37 | $this->lon = $longitude; |
| 38 | } |
| 39 | |
| 40 | function __destruct(){ } |
| 41 | |
| 42 | function __toString(){ return sprintf("%.3f,%.3f", $this->lat, $this->lon); } |
| 43 | |
| 44 | /** |
| 45 | * Get latitude |
| 46 | * |
| 47 | * @param int $roundTo (nullable) if set, return value rounded to `roundTo` decimals |
| 48 | * @return float latitude |
| 49 | */ |
| 50 | public function lat(?int $roundTo = null):float { return is_null($roundTo) ? $this->lat : round($this->lat, $roundTo); } |
| 51 | |
| 52 | /** |
| 53 | * Get longitude |
| 54 | * |
| 55 | * @param int $roundTo (nullable) if set, return value rounded to `roundTo` decimals |
| 56 | * @return float longitude |
| 57 | */ |
| 58 | public function lon(?int $roundTo = null):float { return is_null($roundTo) ? $this->lon : round($this->lon, $roundTo); } |
| 59 | |
| 60 | /** |
| 61 | * Check latitude validity |
| 62 | * |
| 63 | * @return bool True if is valid, false otherwise |
| 64 | */ |
| 65 | private function isValidLatitude(float $latitude){ return ($this->validLatitude['min'] <= $latitude && $latitude <= $this->validLatitude['max']); } |
| 66 | |
| 67 | /** |
| 68 | * Check longitude validity |
| 69 | * |
| 70 | * @return bool True if is valid, false otherwise |
| 71 | */ |
| 72 | private function isValidLongitude(float $longitude){ return ($this->validLongitude['min'] <= $longitude && $longitude <= $this->validLongitude['max']); } |
| 73 | |
| 74 | /** |
| 75 | * Compare two objects |
| 76 | * @return bool true are equals, false otherwise |
| 77 | */ |
| 78 | public function equals(self $other):bool{ return $this->lat == $other->lat && $this->lon == $other->lon; } |
| 79 | |
| 80 | } |