#https://www.shadertoy.com/view/4t23DD

pixels = W:1024 H:1024

x = from -6 to 6 W
y = from -6 to 6 H

t = 0.51
s = 0.25

px = x*s
py = y*s
pz = (sin(t * 0.4) * 0.5 - 0.5)* s

[Loop Start:10
d = px*px + py*py + pz*pz
px = abs(px)/d - 1.65
py = abs(py)/d - 1.65
pz = abs(pz)/d - 1.65
k = length3(px, py, pz)
px = px*k + k
py = py*k + k
pz = pz*k + k
Loop End]

k = (px*px + py*py + pz*pz)*s

r = k*0.5
g = k*1.2
b = k*5.0
