FilesExpand file tree

 master

/

koch.py

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

47 lines (33 loc) · 747 Bytes

 master

/

koch.py

Copy path

Top

File metadata and controls

• Code
• Blame

47 lines (33 loc) · 747 Bytes

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

"""This module contains a code example related to

Think Python, 2nd Edition

by Allen Downey

http://thinkpython2.com

Copyright 2015 Allen Downey

License: http://creativecommons.org/licenses/by/4.0/

"""

from __future__ import print_function, division

import turtle

def koch(t, n):

"""Draws a koch curve with length n."""

if n < 10:

t.fd(n)

return

m = n/3

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.Turtle()

bob.pu()

bob.goto(-150, 90)

bob.pd()

snowflake(bob, 300)

turtle.mainloop()