dow.innerWidth, window.innerHeight );

			}

			function animate() {

				render();
				stats.update();

			}

			function render() {

				if ( helper ) {

					helper.visible = params.displayHelper;

				}

				if ( mesh ) {

					mesh.rotation.y += 0.002;
					mesh.updateMatrixWorld();

				}

				updateRays();

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>
