# Tk_spiralgram.py

# Tk_spiralgram.py

from Tkinter import *
import math

root = Tk()

ww = 520
hh = 520
r = (min(ww,hh)-5)/2

canvas = Canvas(root,width=ww,height=hh)
canvas.pack()

rainbow = []
def rgb():
    rainbow.append('#{:02x}{:02x}{:02x}'.format(r,g,b))

r, g, b = 255, 0, 0
for g in range(256):
    rgb()
for r in range(255, -1, -1):
    rgb()
for b in range(256):
    rgb()
for g in range(255, -1, -1):
    rgb()
for r in range(256):
    rgb()
for b in range(255, -1, -1):
    rgb()

p = len(rainbow)/360.0
r360 = [rainbow[int(z*p)] for z in range(360)]

points = []
circ = int(math.pi * r**2) / 20
p = 360.0/circ
print circ
for x in range(0,ww,2):
    for y in range(x%2,hh,2):
        canvas.create_rectangle((x,y,x+2,y+2),fill='gray',outline=None)

for t in range(circ):
    t *= p
    x = math.sin(t) + math.sin(6*t)/2 + math.cos(14*t)/3
    y = math.cos(t) + math.cos(6*t)/2 + math.sin(14*t)/3
    angle = math.degrees(math.atan2(x,y))
    x,y = [z*140+r-5 for z in (x,y)]
    color = r360[int(angle)]
    canvas.create_oval((x,y,x+1,y+1),fill=color,outline=color)

canvas.update()
root.mainloop()