var diameter = 100;

var a= 126;

var b = 50; 

​

function setup() {

  createCanvas(400, 400);

  frameRate(30);

}

​

function draw() {

  background(0);

  if (mouseIsPressed){

    a++;

    print(a);

  }

  for(x = 50; x <= 330; x+=10){ 

    noFill();

    var offSet = x/a;

    var offSet2 = x/b;

    var sz= (cos(angle+offSet) * diameter);

    var posX= (cos(angle+offSet2) * 0);

    var posY= (cos(angle+offSet2) * 50);

        stroke(255-(x/2),250,220);

    ellipse(x+posX, height/2+posY, sz,sz);

  }

  angle += 0.02;

  // print(sz); //see what is happening

}

​

​