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koch.py
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36 lines (29 loc) · 843 Bytes
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import turtle
t = turtle.Pen()
def courbe(t, longueur_segment, iteration):
if iteration == 0:
t.forward(longueur_segment)
else:
courbe(t, longueur_segment/3, iteration-1)
t.left(60)
courbe(t, longueur_segment/3, iteration-1)
t.right(120)
courbe(t, longueur_segment/3, iteration-1)
t.left(60)
courbe(t, longueur_segment/3, iteration-1)
def flocon(t, longueur_segment, iteration):
courbe(t, longueur_segment, iteration)
t.right(120)
courbe(t, longueur_segment, iteration)
t.right(120)
courbe(t, longueur_segment, iteration)
def flocon_centre(t, longueur_segment, iteration):
t.penup()
x, y = t.position()
t.setposition(x-longueur_segment/2, y+longueur_segment/3)
t.pendown()
flocon(t, longueur_segment, iteration)
t.speed('fast')
flocon_centre(t, 300, 3)
t.hideturtle()
raw_input();