if (isMain == mainlineB) {
                    g2.draw(new Line2D.Double(pF, pBL));
                    GeneralPath path = new GeneralPath();
                    path.moveTo(pAPR.getX(), pAPR.getY());
                    path.quadTo(pMR.getX(), pMR.getY(), pFR.getX(), pFR.getY());