static function cprN($lat, $isodd)
{
$nl = SBS::cprNL($lat) - $isodd;
if ($nl > 1) {
return $nl;
} else {
return 1;
}
}
if ($latlon[$icao]['created'] > time()) {
$ni = SBS::cprN($lat_even, 0);
$m = floor($cprlon_even * (SBS::cprNL($lat_even) - 1) - $cprlon_odd * SBS::cprNL($lat_even) + 0.5);
$lon = 360.0 / $ni * ($m % $ni + $cprlon_even);
$lat = $lat_even;
if ($lon > 180) {
$lon = $lon - 360;
}
if ($lat > -91 && $lat < 91 && $lon > -181 && $lon < 181) {
//if ($globalDebug) echo 'cs : '.$cs.' - hex : '.$hex.' - lat : '.$lat.' - lon : '.$lon;
$data['latitude'] = $lat;
$data['longitude'] = $lon;
}
} else {
$ni = SBS::cprN($lat_odd, 1);
$m = floor($cprlon_even * (SBS::cprNL($lat_odd) - 1) - $cprlon_odd * SBS::cprNL($lat_odd) + 0.5);
$lon = 360.0 / $ni * ($m % $ni + $cprlon_odd);
$lat = $lat_odd;
if ($lon > 180) {
$lon = $lon - 360;
}
if ($lat > -91 && $lat < 91 && $lon > -181 && $lon < 181) {
//if ($globalDebug) echo 'icao : '.$icao.' - hex : '.$hex.' - lat : '.$lat.' - lon : '.$lon.' second'."\n";
$data['latitude'] = $lat;
$data['longitude'] = $lon;
}
}
}
unset($latlon[$icao]);
}
} elseif ($tc == 19) {