pixels = W:1024 H:1024

x = from 0 to 1023 W
y = from 0 to 1023 H

a = 256
b = 256
c = 768
d = 768

u = sqrt((x - a)*(x - a) + (y - b)*(y - b))
v = sqrt((x - c)*(x - c) + (y - d)*(y - d))

k = u + v

c = palette_iq04(k/36)
r = parse_red(c)
g = parse_green(c)
b = parse_blue(c)

