createCanvas(windowWidth, windowHeight);

  buttonGallery = createButton("Gallery");

  buttonGallery.position(windowWidth / 2, windowHeight / 2);

  buttonGallery.mousePressed(goToGallery);

}

​

function draw() {

  background(220);

}

​

function goToGallery() {

window.open("https://sketchfab.com/models/f518b961f41049ca8ec1378993c2a3d8/embed","_self");

}

​