​

function setup() {

  createCanvas(800, 600);

}

​

function draw() {

  background(220);

  fc = frameCount*0.01; 

  for(let i=0; i<width; i++){

    let x = i;

    let y = 100;

    point(x,y);

    y = 200+sin(i*0.1+fc*10)*10;

    point(x,y);

    y = 300+random(-20,20);

    point(x,y);

    y = 400+noise(i*0.01+fc)*100;

    point(x,y);

  }

  push();

  strokeWeight(5);

  let xx = map(noise(fc),0,1,0,width);

  let yy = map(noise(fc+1000),0,1,0,height);

  point(xx,yy);

  pop();

}