# Tk_radial_patterns.py

# Tk_radial_patterns.py

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

import math

ww = 512
hh = 512
ww2 = ww/2
hh2 = hh/2
root = Tk()
root.title("Tk Radial Patterns.py")
root.geometry("%dx%d+0+0"%(ww,hh))
canvas = Canvas(root, width=ww, height=hh)
canvas.grid()

img = Image.new("RGB",(ww,hh))

ttt = range(256)
ttt = [0]+ttt[:-1]+ttt[::-1]
tL = len(ttt)

pix = []
for y in range(hh):
    for x in range(ww):
        pix.append(0)
0

rrr = {}
for y in range(hh):
    for x in range(ww):
        z = int((abs(ww2-x)**2+abs(hh2-y)**2)**0.5)
        if x < ww2:
            t = 0
            if y > hh2:
                t = 2
        else:
            t = 1
            if y > hh2:
                t = 3
        try:
            rrr[z] += [(t,x,y)]
        except:
            rrr[z] = [(t,x,y)]
0
b = 5
k = 6.4
d = 10
qqq = len(rrr)-1
tL = len(ttt)
while 1:
    v = 512*b/360.0
    e = 1
    for z in range(qqq):
        rrr[z].sort()
        L = len(rrr[z])
        L2 = L/2
        r2 = rrr[z][L2:]
        rrr[z] = rrr[z][:L2]+r2[::-1]
        for p,x,y in rrr[z]:
            t = (math.degrees(math.atan2(256-x,256-y))+180)*v
            t = int(t+math.sin(z*k)*d+z)%tL
            pix[x+y*hh] = ttt[t]
    if e:
        img.putdata(pix)
        imgTk = ImageTk.PhotoImage(img)
        canvas.create_image(1, 1, anchor=NW, image=imgTk)
        root.update()
        print d,k
    k += 0.003
    d += 9
0