if ((tx == 0) || (ty == 0))
if ((tx == 0) && (ty == 0))
  public void drawPolyline(int[] xPoints, int[] yPoints, int nPoints)  {    if ((tx == 0) || (ty == 0))      {	directGfx.drawPolyline(xPoints, yPoints, nPoints);	return;      }	        throw new UnsupportedOperationException("translate not implemented");  }