= -Math.cos(angle / 180 * Math.PI) * 60;
			spotLight.lookAt(new t3d.Vector3(0, 26, 0), new t3d.Vector3(0, 1, 0));
		}

		setLightPosition(120);

		const gui = new GUI();
		gui.add({ version: 'WebGL ' + forwardRenderer.capabilities.version }, 'version').disable();
		gui.add(spotLight, 'intensity', 0, 2, 0.01);
		gui.addColor(spotLight, 'color');
		gui.add({ angle: 90 }, 'angle', 0, 360, 0.01).onChange(setLightPosition);
		gui.add(spotLightHelper, 'visible').name('helper');
		const detailFolder = gui.addFold