private void gazePointStreamNext(object sender, StreamData <GazePointData> e)
        {
            this.NextGazeMessage = new GazeMessage(e.Data.X, e.Data.Y);

            this.NextGazeMessage.HasLeftEyePosition  = this.HasLeftEyePosition;
            this.NextGazeMessage.HasRightEyePosition = this.HasRightEyePosition;

            //Logging at every n-th milliseconds
            if (e.Data.Timestamp - lastGazeMessage > 1000)
            {
                Console.WriteLine("Interactor: " + e.InteractorId + " " + NextGazeMessage.ToString());
                lastGazeMessage = e.Data.Timestamp;
            }
        }