var groundMirror2 = new THREE.Mirror( 200, 100, {
                        clipBias: 0,
                        textureWidth: WIDTH * window.devicePixelRatio,
                        textureHeight: HEIGHT * window.devicePixelRatio,
                        color: 0x777777,
                        recursion: 0

                    } );


                    groundMirror2.rotation.x = -Math.PI / 2;
group.add( groundMirror2 );