g.drawRect(xn+xC,yn+yC,1,1);
g.drawRect(-xn+xC,yn+yC,1,1);
g.drawRect(-xn+xC,-yn+yC,1,1);
g.drawRect(xn+xC,-yn+yC,1,1);
g.drawRect(xn+xC,-yn+yC,1,1);
g.drawRect(-yn+yC,-xn+xC,1,1);
g.drawRect(yn+yC,xn+xC,1,1);
g.drawRect(-yn+yC,xn+xC,1,1);
g.drawRect(yn+yC,-xn+xC,1,1);
3.…