最简单的直线也能画出漂亮的图案来：

import tkinter as tk
import pyautogui as ag
from time import sleep

def Line01():
    for j in range(1, 9):
        tCanvas.delete("all")
        coord = 5, 5, 635, 360
        tCanvas.create_rectangle(coord)
        for i in range(5, 635, j):
            coord = 5, 5, i, 360
            tCanvas.create_line(coord)
            coord = 635, 360, i, 5
            tCanvas.create_line(coord)
        coord = 5, 360, 635, 400
        tCanvas.create_rectangle(coord)
        tCanvas.create_text((20, 380), text=u'莫尔条纹，直线动端的间隔 = '
                            + str(j), anchor=tk.W, font=("宋体", 9))
        tCanvas.update()
        sleep(1)

def Line02():
        tCanvas.delete("all")
        coord = 155, 5, 510, 360
        tCanvas.create_rectangle(coord)
        coord = 5, 360, 635, 400
        tCanvas.create_rectangle(coord)
        tCanvas.create_text((20, 380), text=u'直线逼近圆弧，相当于不停地给圆作切线',
                            anchor=tk.W, font=("宋体", 9))
        for j in range(5,0,-1):
            for i in range(0,510-155,j):
                coord = 155+i, 5, 510, 5+i
                tCanvas.create_line(coord)
            tCanvas.update()
            sleep(1)
        coord = 155, 5, 510, 360
        tCanvas.create_rectangle(coord,fill='white')        
        for i in range(0,510-155,5):
            coord = 155+i, 5, 510, 5+i
            tCanvas.create_line(coord)
            coord = 155, 360-i, 155+i, 5
            tCanvas.create_line(coord)
            coord = 155+i, 360, 510, 360-i
            tCanvas.create_line(coord)
            coord = 155, 5+i, 155+i, 360
            tCanvas.create_line(coord)
        tCanvas.update()
        sleep(1)


if __name__ == '__main__':
    
    win = tk.Tk()

    X, Y = ag.size()
    winSize = "640x480"
    winPos = winSize + "+" + str((X - 640) // 2)
    winPos += "+" + str((Y - 480) // 2)
    win.geometry(winPos)
    win.resizable(False, False)
    title = u'桌面分辨率：' + str(X) + "x" + str(Y)
    title += ' ' * 5 + u'窗体大小：' + winSize
    win.title(title)
    win.update()

    tCanvas = tk.Canvas(win, width=win.winfo_width(), height=400, bg='white')
    tCanvas.pack(side="top")

    tk.Label(win, text=u"画布作图，请点击上面的按钮").pack(side="bottom")

    tButton1 = tk.Button(win, text=u'莫尔条纹', command=Line01)
    tButton1.place(width=100, height=35, x=200, y=415)

    tButton2 = tk.Button(win, text=u'直线切图', command=Line02)
    tButton2.place(width=100, height=35, x=340, y=415)

    win.mainloop()

效果图：