Lissajous

from tkinter import *
from random import randrange, randint
import numpy as np

x=100
y=100
r=1
n = 5
p = 6
t = 0

mouvement = False

def demarrer():
    global mouvement
    if mouvement == False:
        mouvement = True
    else:
        mouvement = False

def deplacer():
    global mouvement, x, y, n, p, t
    if mouvement == True:
        x = np.cos(n * t) * 100
        y = np.sin(p * t) * 100
        t += 0.1
        print(x, y)
        can.create_oval(100 + x - r, 100 + y - r, 100 + x + r, 100 + y + r, fill='red', outline='red')
    fen.after(1,deplacer)


fen = Tk()
can = Canvas(fen, bg='white', height=200, width=200)
can.pack(side=RIGHT)
bout1 = Button(fen,text='Quitter',command=fen.destroy)
bout1.pack(side=BOTTOM) #Comme Christine Boutin

boutonDemarrer = Button(fen, text='Demarrer',command=demarrer)
boutonDemarrer.pack(side=TOP)

c=['red','green','blue','yellow','orange']
i=randrange(5)
oval = can.create_oval(x-r, y-r, x+r, y+r, fill=c[i], outline=c[i])
fen.after(50,deplacer)
fen.mainloop()