# Tk_prism.py

# Tk_prism.py

from Tkinter import *
from PIL import Image, ImageTk
from math import *
import random

root = Tk()
root.title("Tk prism")
root.geometry("500x500")
wi = 500
he = 500
w = Canvas(root, width=wi, height=he)
w.pack()

img = Image.new( 'RGB', (wi,he))
cols = {}

for i in range(0, 256):
    cols[0,i] = abs(int(128 - 127 * sin(i * pi / 32)))
    cols[1,i] = abs(int(128 - 127 * sin(i * pi / 64)))
    cols[2,i] = abs(int(128 - 127 * sin(i * pi / 128)))

xy = []
for y in range(0, he):
    for x in range(0, wi):
        c = int(cos(x/50)*128+cos(y/50)*32 + sin((x+y)/16)*32)
        if c > 255 : c = c - 256
        if c < 0 : c = 256 + c
        r = cols[0, c]
        if r > 255 : r = r - 256
        if r < 0 : r = 256 + c
        g = cols[1, c]
        if g > 255 : g = g - 256
        if g < 0 : g = 256 + c
        b = cols[2, c]
        if b > 255 : b = b - 256
        if b < 0 : b = 256 + c
        xy.append((r, g, b))
#print xy
img.putdata(tuple(xy))
imgTk = ImageTk.PhotoImage(img)
w.create_image(0, 0, anchor=NW, image=imgTk)
root.update()