public override void UpdatedLocation(CLLocationManager manager, CLLocation newLocation, CLLocation oldLocation)
{
var currentLocation = EdisonLocationFromCLLocation(newLocation);
OnLocationChanged?.Invoke(this, new LocationChangedEventArgs
{
CurrentLocation = currentLocation,
LastLocation = oldLocation != null ? EdisonLocationFromCLLocation(oldLocation) : null,
});
LastKnownLocation = currentLocation;
}
public const float LocationThresholdPercent = 0.1f; // % as fraction
public static bool RemoveLocationJitter(EdisonLocation oldLocation, EdisonLocation newLocation, int jitterThresholdMeters = UserLocationJitterThreshold)
{
if (newLocation == null)
{
return(false);
}
if (oldLocation == null)
{
return(true);
}
var latDelta = Math.Abs(newLocation.Latitude - oldLocation.Latitude);
var longDelta = Math.Abs(newLocation.Longitude - oldLocation.Longitude);
// Check for user location jitter check the user has moved more than the threshold to update map
var latDistanceDelta = latDelta * 111111;
var longDistanceDelta = longDelta * 111111 * Math.Cos(newLocation.Latitude);
var deltaDist = Math.Sqrt(latDistanceDelta * latDistanceDelta + longDistanceDelta * longDistanceDelta);
return(deltaDist >= jitterThresholdMeters);
}