def move(t, length):
"""Move Turtle (t) forward (length) units without leaving a trail.
Leaves the pen down.
"""
pu(t)
fd(t, length)
pd(t)
def draw_pie(t, n, r):
"""Draws a pie, then moves into position to the right.
t: Turtle
n: number of segments
r: length of the radial spokes
"""
polypie(t, n, r)
pu(t)
fd(t, r*2 + 10)
pd(t)
rt(t, angle)
fd(t, r)
lt(t, 90+angle)
fd(t, 2*y)
lt(t, 90+angle)
fd(t, r)
lt(t, 180-angle)
# create the world and bob
world = TurtleWorld()
bob = Turtle()
bob.delay = 0.01
pu(bob)
bk(bob, 130)
pd(bob)
# draw polypies with various number of sides
size = 40
draw_pie(bob, 5, size)
draw_pie(bob, 6, size)
draw_pie(bob, 7, size)
draw_pie(bob, 8, size)
die(bob)
# dump the contents of the campus to the file canvas.eps
#world.canvas.dump()
wait_for_user()
def skip(t, n):
"""lift the pen and move"""
pu(t)
fd(t, n)
pd(t)