code: public void setPosition(Coordinate position) {
  		if (getOriginalLocation() != null) {
  			Bbox oldBounds = (Bbox) getOriginalLocation();
  			Bbox newBounds = (Bbox) oldBounds.clone();
  			newBounds.setCenterPoint(position);
  			setOriginalLocation(newBounds);
  		} else {
  			setOriginalLocation(new Bbox(position.getX(), position.getY(), 0, 0));
  		}
  	}
docs: Set circle position in world space.
  
  @param position circle center