#https://www.shadertoy.com/view/ll23WK

pixels = W:1024 H:1024

x = from -512 to 512 W
y = from -512 to 512 H

a = atan2(y,x)*3.18*0.5
b = fract(a)
c = fract(a+cos(length2(x, y)*0.1)*0.2+1.0)

r = max(b, c)
g = r
b = r
