#https://www.shadertoy.com/view/4dsXR4

pixels = W:1024 H:1024

x = from -10 to 10 W
y = from -10 to 10 H

i = 5.156

r = length2(x, y)/4
a = atan2(y,x)
s = r - a/(2*PI)
t = floor(s)+a/(2*PI)
l = PI*t*t+ 10*i
s = s*2*PI

c = smoothstep(-1.0,1.0,sin(s))*smoothstep(-1.0,1.0,sin(10.0*l))

r = sin(c)
g = sin(1.2*c)
b = sin(1.4*c)

