			leftObject.material.roughnessNode = texture( alphaTexture );
				leftObject.material.metalness = 0;
				leftObject.position.x = - 3;
				scene.add( leftObject );

				const centerObject = new THREE.Mesh( geometryTeapot, new THREE.MeshStandardNodeMaterial( { color: 0x555555 } ) );
				centerObject.material.normalNode = normalMap( texture( normalMapTexture ) );
				centerObject.material.metalness = .5;
				centerObject.material.roughness = .5;
				scene.add( centerObject );

				const rightObject = new THR