private void Cleanup()
{
// Detach windows key event handler
Window.Current.CoreWindow.KeyUp -= CoreWindowOnKeyUp;
// Cancel the processing loop
if (_processingTaskCancellationTokenSource != null)
{
_processingTaskCancellationTokenSource.Cancel();
}
// Stop ARToolKit and shutdown
if (_arWrapper != null)
{
_isRunning = false;
if (!_arWrapper.arwStopRunning())
{
throw new InvalidOperationException("Failed to stop ARToolkit from running.");
}
if (!_arWrapper.arwShutdownAR())
{
throw new InvalidOperationException("Failed to shutdown ARToolkit.");
}
_arWrapper = null;
}
_wasStarted = false;
}
