lessons/06/demo.js
function animate() {
        // render
        controls.update();

        if (ready) {
            renderer.render(scene, camera);
        }

        stats.update();

        // request new frame
        requestAnimationFrame(function() {
            animate();
        });
    }
function animate() {
        // render
        controls.update();

        if (ready) {
            renderer.render(scene, camera);
        }

        stats.update();

        // request new frame
        requestAnimationFrame(function() {
            animate();
        });
    }
Rendering loop