# Tk_parallel_pixels_threading.py ^2018.08

# Tk_parallel_pixels_threading.py

from Tkinter import *
from threading import Thread
import time
import random
from PIL import Image, ImageTk

root = Tk()
root.title("Y-Axis-Parallel_Pixels")
root.geometry("120x120")
wi = 120
he = 120
w = Canvas(root, width=wi, height=he)
w.pack()

def thread_process(y,xy):
    for x in range(120):
        xy.append((0,random.randrange(y*2+15, 255),0)) # set the color accordingly
#
def draw():
    threads = []
    img = Image.new( 'RGB', (wi,he))
    xy = []
    for y in range(he):
        t = Thread(target=thread_process, args=(y,xy))
        t.start()
        threads.append(t)
    # join all 120 Y-Axis threads
    for t in threads:
        t.join()
    img.putdata(xy)
    img = ImageTk.PhotoImage(img)
    #time.sleep(0.02)
    w.create_image(0, 0, anchor=NW, image=img)
    root.update()
    draw()
#

draw()