def circle(t, r):
"""Draws a circle with the given radius.
t: Turtle
r: radius
"""
arc(t, r, 360)
# bob._delay(0.01)
bob.penup()
radius = 250
square(bob, radius)
bob.rt(90)
bob.fd(150)
bob.rt(90)
bob.fd(30)
bob.rt(180)
bob.pendown()
bob._delay(0.01)
circle(bob, radius)
bob.penup()
# bob._delay(30)
# polygon(bob, 7, 250)
screen = Screen()
screen.exitonclick()
# bob = Turtle()
# print(bob)
# a = input("press")
def koch(t, n):
"""Draws a koch curve with length n."""
if n<3:
t.fd(n)
return
m = n/3.0
koch(t, m)
t.lt(60)
koch(t, m)
t.rt(120)
koch(t, m)
t.lt(60)
koch(t, m)
def snowflake(t, n):
"""Draws a snowflake (a triangle with a Koch curve for each side)."""
for i in range(3):
koch(t, n)
t.rt(120)
bob = Turtle(shape="turtle")
bob._delay(0.0001)
bob.x = -150
bob.y = 90
snowflake(bob, 300)
screen = Screen()
screen.exitonclick()
angle: peak angle in degrees
"""
y = r * math.sin(angle * math.pi / 180)
t.rt(angle)
t.fd(r)
t.lt(90 + angle)
t.fd(2 * y)
t.lt(90 + angle)
t.fd(r)
t.lt(180 - angle)
# create the world and bob
bob = Turtle(shape='turtle')
bob._delay(50)
bob.pu()
bob.bk(130)
bob.pd()
# 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)
screen = Screen()
screen.exitonclick()
# dump the contents of the campus to the file canvas.eps
