from tkinter import *
import math
def left(event):
global line1, line2, line3, line4, alpha, d, pos1, pos2, pos3, pos4
for i in range(4):
alpha[i] -= 1
canvas.delete(line1, line2, line3, line4)
pos1 = [100+d*math.cos(math.radians(alpha[0])),
100+d*math.sin(math.radians(alpha[0]))]
pos2 = [100+d*math.cos(math.radians(alpha[1])),
100+d*math.sin(math.radians(alpha[1]))]
pos3 = [100+d*math.cos(math.radians(alpha[2])),
100+d*math.sin(math.radians(alpha[2]))]
pos4 =[100+d*math.cos(math.radians(alpha[3])),
100+d*math.sin(math.radians(alpha[3]))]
line1 = canvas.create_line(pos1[0], pos1[1], pos2[0], pos2[1])
line2 = canvas.create_line(pos2[0], pos2[1], pos3[0], pos3[1])
line3 = canvas.create_line(pos3[0], pos3[1], pos4[0], pos4[1])
line4 = canvas.create_line(pos4[0], pos4[1], pos1[0], pos1[1])
def right(event):
global line1, line2, line3, line4, alpha, d, pos1, pos2, pos3, pos4
for i in range(4):
alpha[i] += 1
canvas.delete(line1, line2, line3, line4)
pos1 = [100+d*math.cos(math.radians(alpha[0])),
100+d*math.sin(math.radians(alpha[0]))]
pos2 = [100+d*math.cos(math.radians(alpha[1])),
100+d*math.sin(math.radians(alpha[1]))]
pos3 = [100+d*math.cos(math.radians(alpha[2])),
100+d*math.sin(math.radians(alpha[2]))]
pos4 =[100+d*math.cos(math.radians(alpha[3])),
100+d*math.sin(math.radians(alpha[3]))]
line1 = canvas.create_line(pos1[0], pos1[1], pos2[0], pos2[1])
line2 = canvas.create_line(pos2[0], pos2[1], pos3[0], pos3[1])
line3 = canvas.create_line(pos3[0], pos3[1], pos4[0], pos4[1])
line4 = canvas.create_line(pos4[0], pos4[1], pos1[0], pos1[1])
root = Tk()
canvas = Canvas(root, width=200, height=200)
canvas.pack()
alpha = [60, 120, 240, 300]
d=50
pos1 = [100+d*math.cos(math.radians(alpha[0])),
100+d*math.sin(math.radians(alpha[0]))]
pos2 = [100+d*math.cos(math.radians(alpha[1])),
100+d*math.sin(math.radians(alpha[1]))]
pos3 = [100+d*math.cos(math.radians(alpha[2])),
100+d*math.sin(math.radians(alpha[2]))]
pos4 =[100+d*math.cos(math.radians(alpha[3])),
100+d*math.sin(math.radians(alpha[3]))]
line1 = canvas.create_line(pos1[0], pos1[1], pos2[0], pos2[1])
line2 = canvas.create_line(pos2[0], pos2[1], pos3[0], pos3[1])
line3 = canvas.create_line(pos3[0], pos3[1], pos4[0], pos4[1])
line4 = canvas.create_line(pos4[0], pos4[1], pos1[0], pos1[1])
canvas.focus_set()
canvas.bind("", right)
canvas.bind("", left)
root.mainloop()
