code: public void offsetTo(float newLeft, float newTop) {
          right += newLeft - left;
          bottom += newTop - top;
          left = newLeft;
          top = newTop;
      }
docs: Offset the viewport to a specific (left, top) position, keeping its width and height the same.
  
  @param newLeft The new "left" coordinate for the viewport
  @param newTop  The new "top" coordinate for the viewport