var x,y;

​

//Switch Button

var button = false;

​

​

function setup() {

    createCanvas(windowWidth, windowHeight);

  x = random(0, width);

  y = height;

​

  //Introduction Text

  fill(255, 255, 0);

  textAlign(CENTER);

  textSize(32);

  text('Double click to start and double click to freeze.', width/2, 30);

  noCursor();

}

​

​

function draw() {

  //Ball Color

  var r = map(mouseY, 0, height, 0, 255);

  var g = map(mouseX, 0, width, 0, 255);

  var b = map(mouseY, 0, height, 0, 255);

  noStroke();

  //Switch On

  if (button) {

    background(0,0,0,10);

    fill(r, g, 255-b);

    ellipse(x, y, 30, 30);

    // Jiggling randomly on the horizontal axis

    x = x + random(-1, 1);

    // Moving up at a constant speed

    if (y > 0) {

        y = y - 1;

    } else {

        y = height;

    }

  }

​

}

​

//Switch Off 

function doubleClicked() {

  button = !button;

}