# Tk_speed_of_graphics3.py

# Tk_speed_of_graphics3.py

from Tkinter import *
from PIL import Image, ImageTk
import random
from time import clock

root = Tk()
root.title("Speed of Graphics 3 on 500x500 per Pixel")
root.geometry("500x500")
wi = 500
he = 500
w = Canvas(root, width=wi, height=he)
w.pack()

def data_process(y):
    xy.extend([(y/2,random.randrange(255),0) for x in range(wi)]) # set the color accordingly
#
xy = []
for y in range(he):
    data_process(y)

img = Image.new( 'RGB', (wi,he))
c = 40 # Should be at least 40 frames per second for a 2560x1440 screen
start = clock()
while c:
    xy = xy[1:]+[xy[0]] # animate without random()
    img.putdata(tuple(xy))
    imgTk = ImageTk.PhotoImage(img)
    w.create_image(0, 0, anchor=NW, image=imgTk)
    root.update()
    c = c - 1
#
t = int((clock()-start)*((2560*1440)/((wi*he)*1.0)))
if t:
    print("Needs To Be At Least %dx Faster"%t)
else:
    print("Congratulation... Minimal Speed Exceeded!")