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

pixels = W:1024 H:1024

x = from -1.0 to 1.0 W
y = from -1.0 to 1.0 H

t = 1.0

a = atan2(x, y)
m = 2*x + cos(a*3 + t)

f = 1 - exp(-0.005/m/m)

r = f
g = f
b = f