# Tk_radial_rainbow.py

# Tk_radial_rainbow.py ### blah

from Tkinter import *
from math import sqrt, atan2
from random import shuffle as rs

def oRGB(rgb): # pass
    r,g,b = rgb
    return "#%02x%02x%02x" % (r,g,b)

ww = 600
hh = 600
root = Tk()
root.title("# Tk_radial_rainbow")
root.geometry("%dx%d+0+0"%(ww,hh))
canvas = Canvas(root, width=ww, height=hh)
canvas.grid()

stepSize = 5
cols = ww / stepSize
rows = hh / stepSize
x = x0 = ww / 2
y = y0 = hh / 2

xy = []
for y in range(0,hh,stepSize):
    for x in range(0,ww,stepSize):
        distance = sqrt((x0-x)**2+(y0-y)**2)
        xy2 = atan2(x-x0,y-y0)
        xy.append(((int(distance), xy2),x,y))

xy.sort()

xy = [(x,y) for z,x,y in xy]

iii = 1
COLORS = 'red orange yellow green blue purple'.split()
t = stepSize
while 1:
    #rs(COLORS)
    color = 0
    Lc = len(COLORS)
    canvas.delete('all')
    i = 1
    for x,y in xy:
        canvas.create_rectangle((x,y,x+t,y+t), fill=COLORS[color], outline='')
        color = int(color+i)%Lc
        i += iii
    canvas.update()
    iii += 0.1