#https://www.shadertoy.com/view/4d23WG

pixels = W:1024 H:1024

x = from -1.2 to 1.2 W
y = from -1.2 to 1.2 H

t = 1.7835
anx = 0.51*cos( 0.1*t ) - 0.25*cos( 0.2*t )
any = 0.51*cos( 1.5708 + 0.1*t ) - 0.25*cos( 1.5708 + 0.2*t )

f = 100.0
zx = x
zy = y

zz = zx*zx - zy*zy + anx
zy = 2.0*zx*zy + anx
zx = zz
f = min(f, zx*zx + zy*zy)

zz = zx*zx - zy*zy + anx
zy = 2.0*zx*zy + anx
zx = zz
f = min(f, zx*zx + zy*zy)

zz = zx*zx - zy*zy + anx
zy = 2.0*zx*zy + anx
zx = zz
f = min(f, zx*zx + zy*zy)

zz = zx*zx - zy*zy + anx
zy = 2.0*zx*zy + anx
zx = zz
f = min(f, zx*zx + zy*zy)

zz = zx*zx - zy*zy + anx
zy = 2.0*zx*zy + anx
zx = zz
f = min(f, zx*zx + zy*zy)

zz = zx*zx - zy*zy + anx
zy = 2.0*zx*zy + anx
zx = zz
f = min(f, zx*zx + zy*zy)

zz = zx*zx - zy*zy + anx
zy = 2.0*zx*zy + anx
zx = zz
f = min(f, zx*zx + zy*zy)

zz = zx*zx - zy*zy + anx
zy = 2.0*zx*zy + anx
zx = zz
f = min(f, zx*zx + zy*zy)

zz = zx*zx - zy*zy + anx
zy = 2.0*zx*zy + anx
zx = zz
f = min(f, zx*zx + zy*zy)

zz = zx*zx - zy*zy + anx
zy = 2.0*zx*zy + anx
zx = zz
f = min(f, zx*zx + zy*zy)

f = 1.0+log(f)/16.0

r = f
g = f*f
b = f*f*f
