let startY;

​

function setup() {

  createCanvas(400, 400);

  frameRate(1);

  startX = width/2;

  startY = height/2;

}

​

function draw() {

​

  //background(255);

  if(frameCount % 6 == 0){

    background(255);

​

  }

  let randomX = random(0, width);

  let randomY = random(0, height);

  let randomR = random(20,100);

  noFill();

  stroke(0);

  let size = 20 * (frameCount % 6);

  circle(startX, startY, size);

  // draw line between these two points

  //line(startX, startY, randomX, randomY);

  // make the starting be the random point

  startX = randomX;

  startY = randomY;

​

}