bounds = new Rectangle (minx, maxy, maxx - minx, maxy - miny);
bounds = new Rectangle (minx, miny, maxx - minx, maxy - miny);
  public Rectangle getBoundingBox()  {    if (bounds == null)      {        if (npoints == 0)          return bounds = new Rectangle ();        int i = npoints - 1;        int minx = xpoints[i];        int maxx = minx;        int miny = ypoints[i];        int maxy = miny;        while (--i >= 0)          {            int x = xpoints[i];            int y = ypoints[i];            if (x < minx)              minx = x;            else if (x > maxx)              maxx = x;            if (y < miny)              miny = y;            else if (y > maxy)              maxy = y;          }        bounds = new Rectangle (minx, maxy, maxx - minx, maxy - miny);      }    return bounds;  }