The eye is a generative portal

mySketch
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f=0
draw=_=> {
  f--||createCanvas(W=400, W)
  background(0)
  t=r=200
  circle(t,t,t)
  if(r>0){
    for(z=255; z>=0; z--){
      for(i=PI/128;i<TAU;i+=PI/128){
        push(n=noise((sin(i+f/99)*r)/90000,(cos(i*.95)*r)/90000,(f+z)/99))
        translate(t,t)  
        rotate(i)
        stroke(z%240)
        point(0,z*n)
        pop(r-=20)
      }
    }
  }
}
​
// ----------------------------------------
// Minimized
// ----------------------------------------
// f=0,draw=e=>{if(f--||createCanvas(W=400,W),background(0),t=r=200,circle(t,t,t),r>0)for(z=255;z>=0;z--)for(i=PI/128;i<TAU;i+=PI/128)push(n=noise(sin(i+f/99)*r/9e4,cos(.95*i)*r/9e4,(f+z)/99)),translate(t,t),rotate(i),stroke(z%240),point(0,z*n),pop(r-=20)};//#つぶやきProcessing