createCanvas(600, 400);

  frameRate(3);

}

​

function draw() {

  background(random(200),random(150),random(200));

  stroke('3');

  frameRate(random(1,150)/3);

  for (var i0=0; i0<=10; i0++){

  fill(mouseX-random(1,i0*10+10), (mouseX+mouseY/4),-random(1,i0*10+10), mouseY-random(1,i0*10+10));

    rect(i0*100,0,100,25);

  for (var i1=0; i1<=20; i1++){

  fill(mouseX-random(1,i0*10+10), (mouseX+mouseY/4),-random(1,i0*10+10), mouseY-random(1,i0*10+10));

    rect(i0*100,i1*25,100,25);  

  }

  }

   for (var i=0; i<=20; i++){

rect(random(50,400),random(50,400),random(50,200),random(50,200));

  }

​

}