om() - 0.5 ) * 1000;
					mesh.position.y = ( Math.random() - 0.5 ) * 1000;
					mesh.position.z = ( Math.random() - 0.5 ) * 1000;
					mesh.updateMatrix();
					mesh.matrixAutoUpdate = false;
					scene.add( mesh );

				}

				// lights

				const dirLight1 = new THREE.DirectionalLight( 0xffffff, 3 );
				dirLight1.position.set( 1, 1, 1 );
				scene.add( dirLight1 );

				const dirLight2 = new THREE.DirectionalLight( 0x002288, 3 );
				dirLight2.position.set( - 1, - 1, - 1 );
				scene.add( dirLight2 );

