​

function setup() {

  createCanvas(400, 400);

}

function draw() {

  background('blue');

  colorMode(HSB,100);

  noStroke(); 

  for (var a = 0; a < arrayOfSquiggles.length; a++) {

    var aSquiggle = arrayOfSquiggles[a];

    for (var i = 0; i < aSquiggle.length; i++) {

      var ithPoint = aSquiggle[i];

      var px = ithPoint.x + 10 * sin(sqrt(a*a + i*i)/6.0 + millis()/50.0); 

      var py = ithPoint.y;

      var diam = 15 + 8 * sin(millis()/30.0 - i);

      fill ((7+a*17)%45-12, i*2, 128); 

      circle(px, py, diam); 

    }

  }

}

function mousePressed() {

  var aNewSquiggle = [];

  var aNewPoint = createVector(mouseX, mouseY);

  aNewSquiggle.push(aNewPoint);

  arrayOfSquiggles.push(aNewSquiggle);

}

function mouseDragged() {

  var indexOfCurrentSquiggle = arrayOfSquiggles.length - 1;

  var currentSquiggle = arrayOfSquiggles[indexOfCurrentSquiggle];

  var aNewPoint = createVector(mouseX, mouseY);

  currentSquiggle.push(aNewPoint);

}

function keyPressed() {

  arrayOfSquiggles = [];

}