adialSegments: 8,
						heightSegments: 1,
						openEnded: false,
						thetaStart: 0,
						thetaLength: twoPi
					};

					function generateGeometry() {

						updateGroupGeometry( mesh,
							new ConeGeometry(
								data.radius,
								data.height,
								data.radialSegments,
								data.heightSegments,
								data.openEnded,
								data.thetaStart,
								data.thetaLength
							)
						);

					}

					const folder = gui.addFolder( 'THREE.ConeGeometry' );

					folder.add( data, 'radius', 0,