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hvezdy.py

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#!/usr/bin/env python

from turtle import *

import time

import math

def polygram(n, variant=1, a=300):

pendown()

if variant == 1:

right(360/n)

for i in range(n):

forward(a)

right(2*360/n)

left(360/n)

elif variant == 2:

right(90-90/n)

for i in range(n):

forward(a)

right(180-180/n)

left(90-90/n)

penup()

def star(n, a=200, zaklad=100):

uhel1 = 180 - 2*math.asin(zaklad/2/a)/math.pi*180 # doplněk do 180 vnitřního úhlu hvězdy

uhel2 = -360/n+2*math.acos(zaklad/2/a)/math.pi*180 # doplněk do 180 vnějšího úhlu hvězdy

print(uhel1, uhel2)

left(math.acos(zaklad/2/a)/math.pi*180)

for i in range(n):

forward(a)

right(uhel1)

forward(a)

left(uhel2)

#for i in range(3, 10):

# hideturtle()

# speed(0)

# polygon(i)

# time.sleep(1)

# bye()

#hideturtle()

#tracer(600, 0)

speed(0)

penup()

for i in range(5,19,2):

goto(-550+150*(i-5), 400)

polygram(i, variant=1, a=1500/i)

goto(-550+150*(i-5), 0)

polygram(i, variant=2, a=300)

#star(20, 100, 50)

update()

exitonclick()