let msg ="Bon\nAnniversaire";

function setup() {

  createCanvas(windowWidth, windowHeight);

  img = createGraphics(width, height);

  img.fill(0);

  img.rect(0, 0, width, height);

}

​

function draw() {

  background(200);

  textSize(40);

  textAlign(CENTER, CENTER);

  textStyle(BOLD);

  colorMode(HSB,100,100,100);

  fill(frameCount%100,80,0);

  text(msg, width / 2-2, height / 2-2);

  fill(frameCount%100,80,100);

  text(msg, width / 2, height / 2);

  colorMode(RGB);

​

  blend(img, 0, 0, width, height, 0, 0, width, height, DARKEST);

}

​

function mouseDragged() {

  img.fill(255);

  img.noStroke();

  img.ellipseMode(CENTER);

  img.push();

  img.translate(mouseX - 10, mouseY - 20);

  img.strokeWeight(10);

  img.circle(0, 0, 50);

  img.pop();

}

​

​

document.ontouchmove = function (event) {

  event.preventDefault();

};

​

function touchStarted() {

  var fs = fullscreen();

  if (!fs) {

    fullscreen(true);

    img = createGraphics(width, height);

    img.fill(0);

    img.rect(0, 0, width, height);

  } else {

    navigator.vibrate(2000);

  }

}

function touchEnded() {

    navigator.vibrate(0);

}

function windowResized() {

  resizeCanvas(windowWidth, windowHeight);

  img = createGraphics(width, height);

  img.fill(0);

  img.rect(0, 0, width, height);

}

​