tattoo2.py

from PIL import Image
from math import cos, sin, sqrt
import struct

import psyco
psyco.full()

def f(x, y):
	tsin = sin(3.14159/4)
	tcos = cos(3.14159/4)
	return int(sqrt(abs(x*tcos - y*tsin))), int(sqrt(abs(y*tcos + x*tsin)))

#f = lambda v: int(sqrt(abs(v)))
#f = lambda v: v**2

size = 256
hsize = size / 2

idata = [None]*(size*size*3)
i = 0
def pixel(v):
	global i, idata
	idata[i] = chr(v)
	i += 1
	idata[i] = chr(v)
	i += 1
	idata[i] = chr(v)
	i += 1

tdata = [[None] * size] * size
for y in range(size):
	print y
	#y = f(y)
	for x in range(size):
		tx, ty = f(x-hsize, y-hsize)
		if tx & ty == 0:
			tdata[y][x] = 255
		else:
			tdata[y][x] = 0

for y, row in enumerate(tdata):
	print y
	map(pixel, row)

im = Image.fromstring('RGB', (size, size), ''.join(idata))
im.save('tattoo%i.png' % size)