/// <summary>
/// Determines whether or not the tracker is currently detecting a trackable.
/// </summary>
/// <returns><c>true</c> if the tracker tracked at least one trackable this frame, <c>false</c> otherwise.</returns>
public bool HasActiveTrackingData()
{
return(_trackerPlugin != null && _trackerPlugin.IsTrackingRunning() && _lastDetectedTrackables != null && _lastDetectedTrackables.Length > 0);
}