code: public void setTrackLocation( RectangleLength2D_I32 location ) {
  		this.location.set(location);
  
  		// massage the rectangle so that it has an odd width and height
  		// otherwise it could experience a bias when localizing
  		this.location.width += 1- this.location.width%2;
  		this.location.height += 1- this.location.height%2;
  
  		failed = false;
  	}
docs: Used to set the location of the track without changing any appearance history.
  @param location new location