Babylon circle movement

	// Torus
	var torus = BABYLON.Mesh.CreateTorus("torus", 4, 2, 30, scene, false);

	// Animations
	var alpha = 0;
	scene.registerBeforeRender(function () {
		torus.rotation.x += 0.001;
		torus.rotation.z += 0.02;

		torus.position = new BABYLON.Vector3(Math.cos(alpha) * 30, 10, Math.sin(alpha) * 30);
		alpha += 0.001;