/**
* Calculate distance between two coord sets
* @author zbrown
*
* @param ApiRequestObject $apiRequest
* @return array
*/
public function calculateDistance(ApiRequestObject $apiRequest)
{
$primaryLatitude = $apiRequest->getLatitude();
$primaryLongitude = $apiRequest->getLongitude();
$secondaryLatitude = $apiRequest->getSecondaryLatitude();
$secondaryLongitude = $apiRequest->getSecondaryLongitude();
$metricUnit = $apiRequest->getMetricUnit();
$roundMath = $apiRequest->getRoundMath();
$payload = array();
$theta = $primaryLongitude - $secondaryLongitude;
$dist = sin(deg2rad($primaryLatitude)) * sin(deg2rad($secondaryLatitude)) + cos(deg2rad($primaryLatitude)) * cos(deg2rad($secondaryLatitude)) * cos(deg2rad($theta));
$dist = acos($dist);
$dist = rad2deg($dist);
$miles = $dist * 60 * 1.1515;
$unit = strtolower($metricUnit);
if ($unit == 'k') {
$distance = $miles * 1.609344;
$payload['unitName'] = 'kilometers';
} else {
if ($unit == 'n') {
$distance = $miles * 0.8683999999999999;
$payload['unitName'] = 'nautical miles';
} else {
$distance = $miles;
$payload['unitName'] = 'miles';
}
}
if (!empty($roundMath)) {
$final = round($distance, $roundMath);
} else {
$final = $distance;
}
$payload = ['distance' => $final, 'metric' => strtoupper($apiRequest->getMetricUnit())];
return $payload;
}
