let g = 0.01;

​

// Clicking in the box toggles fullscreen on and off.

function setup() {

  createCanvas(windowWidth, windowHeight);

}

​

function draw() {

  background(0);

  fill(255);

  noStroke();

  textSize(50);

  text(fps.toFixed(3),100,120);

  text(frameCount,100,180);

  fps = (1-g)*fps + g * frameRate();

}

​

function mousePressed() {

  if (mouseX > 0 && mouseX < windowWidth && mouseY > 0 && mouseY < windowHeight) {

    let fs = fullscreen();

    fullscreen(!fs);

  }

}

​

function windowResized() {

  resizeCanvas(windowWidth, windowHeight);

}