var d = 0;

var e = 400;

var speed = 1;

var direction= -1;

​

​

function setup() { 

  createCanvas(400, 400);

​

} 

​

function draw() { 

  background(0);

  odd();

  }

​

​

function odd(x,y){

 translate (x,y);

  d += speed * direction;

  if ((d > height) || (d < 0)){

  direction = -direction;

 }

if (direction == 1){

     for (var i = 0; i < 100; i++){

     stroke(255);

  noFill();

ellipse(0,d*25,radius, radius);

     }

​

} else {

     stroke(255);

  noFill();

  ellipse(0,d,radius,radius);

​

}

}

​

function even(x,y){

    translate (x,y);

    e -= speed * direction;

 if ((e > height) || (e < 0)){

  direction = -direction;

  }

​

if (direction == 400){

     stroke(255);

  noFill();

ellipse(30,e,radius, radius);

} else {

     stroke(255);

  noFill();

 ellipse(30,e,radius,radius);

}

}

​

​