Python-turtle风车动画

from turtle import *
import time
import math
r = 2/math.sqrt(3)*100
def draw(angle):
    up()
    goto(0,0)
    pd()
    for i in range(4):
        seth(i*90 + angle)
        color("black","blue")
        begin_fill()
        fd(200)
        left(150)
        fd(r)
        end_fill()
        
        color("black","red")
        begin_fill()
        left(30)
        fd(100)
        left(90)
        fd(r/2)
        end_fill()
draw(0)
tracer(0)
hideturtle()
while 1:
    for i in range(0,360,3):
        clear()
        draw(i)
        update()
        time.sleep(0.005)