//dessin des verticales de droite
d=DPPerpendicular("axeX","F1");
SetColor(d,"blue");
DPSymmetry("F2","F1","G0");
SetHide("F2",true);
for(n=2;n<=20;n++){
	d=DPPerpendicular("d"+n,"axeX","F"+n);
	SetColor(d,"blue");
	DPSymmetry("F"+(n+1),"F"+n,"F"+(n-1));
	SetHide("F"+(n+1),true);
}
//dessin des verticales de gauche
d=DPPerpendicular("axeX","H1");
SetColor(d,"blue");
DPSymmetry("H2","H1","G0");
SetHide("H2",true);
for(n=2;n<=20;n++){
	d=DPPerpendicular("c"+n,"axeX","H"+n);
	SetColor(d,"blue");
	DPSymmetry("H"+(n+1),"H"+n,"H"+(n-1));
	SetHide("H"+(n+1),true);
}