/**
  * Resets the display to the smallest lense-display distance
  */
 public void Reset()
 {
     motorController.ResetStepper();
     currentDistanceMeters      = -1.0f;
     lastDistanceMeters         = -1.0f;
     currentPerceptualSmoothing = -1.0f;
     updateDisplayTimeout       = minTimeBetweenUpdatesSecs;
 }