unitsize(.8cm); // 4 TYPES de tête de flèche draw((0,0)..(2,2)..(0,4),2bp+green,ArcArrow); // TYPE 1 draw((2,0)..(4,2)..(2,4),2bp+green,ArcArrow(SimpleHead)); // TYPE 2 draw((4,0)..(6,2)..(4,4),2bp+green,ArcArrow(HookHead)); // TYPE 3 draw((6,0)..(8,2)..(6,4),2bp+green,ArcArrow(TeXHead)); // TYPE 4 shipout(bbox(5mm,white));