public function getDistanceTo(MapLocation $location)
{
$earthRadius = 3958.75;
$dLat = deg2rad($location->getLatitude() - $this->getLatitude());
$dLng = deg2rad($location->getLongitude() - $this->getLongitude());
$a = sin($dLat / 2) * sin($dLat / 2) + cos(deg2rad($this->getLatitude())) * cos(deg2rad($location->getLatitude())) * sin($dLng / 2) * sin($dLng / 2);
$c = 2 * atan2(sqrt($a), sqrt(1 - $a));
$dist = $earthRadius * $c;
// from miles
$meterConversion = 1609;
$geopointDistance = $dist * $meterConversion;
return $geopointDistance;
}
/**
* @param MapLocation|null $location
*/
public function setLocation($location)
{
if ($location instanceof MapLocation) {
$this->latitude = $location->getLatitude();
$this->longitude = $location->getLongitude();
}
}