def draw_circle(self, t):
t.pu()
t.goto(self.c.x, self.c.y)
t.fd(self.r)
t.lt(90)
t.pd()
polygon.circle(t, self.r)
def draw_o(t):
"""Function to draw a 'o' character. """
fd(t, 20)
circle(t, 20)
pu(t)
bk(t, 20)
pd(t)
def draw_o(t):
"""Function to draw a 'o' character. """
fd(t, 20)
circle(t, 20)
pu(t)
bk(t, 20)
pd(t)
def draw_circle(t, circle):
'''Move the turtle in (x,y) and draw a circle
t: turtle
circle: Circle object
'''
t.pu()
t.goto(circle.corner.x, circle.corner.y)
t.fd(circle.radius)
t.lt(90)
t.pd()
polygon.circle(t, circle.radius)
def draw_circle(t, circle):
"""Draws a circle.
t: Turtle
circle: Circle
"""
t.pu()
t.goto(circle.center.x, circle.center.y)
t.fd(circle.radius)
t.lt(90)
t.pd()
polygon.circle(t, circle.radius)
def draw_circle(t, circle):
"""Draws a circle.
t: Turtle
circle: Circle
"""
t.pu()
t.goto(circle.center.x, circle.center.y)
t.fd(circle.radius)
t.lt(90)
t.pd()
polygon.circle(t, circle.radius)
def main():
world = TurtleWorld()
bob = Turtle()
bob.delay = 0.005
# square(bob,45)
# square(bob,100)
# square(bob,180)
# polygon(bob,15,30)
# square(bob,60)
circle(bob, 60)
#arc(bob,80,180)
polyline
wait_for_user()
def draw_o(t, n):
skip(t, n)
circle(t, n)
skip(t, n)
def draw_o(t, n):
skip(t, n)
circle(t, n)
skip(t, n)
# running as a script, in which case run the test code,
# or being imported, in which case don't.
if __name__ == '__main__':
world = TurtleWorld()
bob = Turtle()
bob.delay = 0.001
# draw a circle centered on the origin
radius = 100
pu(bob)
fd(bob, radius)
lt(bob)
pd(bob)
circle(bob, radius)
wait_for_user()
# LEVEL 1 PRIMITIVES are simple combinations of Level 0 primitives.
# They have no pre- or post-conditions.
def fdlt(t, n, angle=90):
"""forward and left"""
fd(t, n)
lt(t, angle)
def fdbk(t, n):
"""forward and back, ending at the original position"""
fd(t, n)
# TODO; there are more exercises in section 4.3 page 31.
# TODO; A 2 monitor system gets the previous centered on the 2 monitor break; move it.
import polygon
import turtle
print("Exercise 4.1")
# download http://greenteapress.com/thinkpython2/code/polygon.py
# http://web.cecs.pdx.edu/~lmd/cs161/turtle-excerpt.htm (not everything works with Dale's version of turtle.
# https://docs.python.org/3/library/turtle.html#module-turtle
bob = turtle.Turtle()
#bob.reset()
#bob.screen.setworldcoordinates(100,100,250,207.5)
#bob.screen.setworldcoordinates(-50,-7.5,50,7.5)
#for _ in range(72):
# left(10)
#for _ in range(8):
# left(45); fd(2) # a regular octagon
#reply = input("Tap ENTER to continue...")
#bob.reset()
bob.penup()
#bob.setx(100)
#bob.sety(100)
radius = 20
bob.pendown()
polygon.circle(bob, radius)
reply = input("Tap ENTER to continue...")
