求object1在object2坐标系下的包围盒

function utils_getBox(object1,object2) {    var matrix = new THREE.Matrix4().compose(object2.position, object2.quaternion, object2.scale);    var scale = object2.scale.clone();    var rotation = object2.rotation.clone();    new THREE.Matrix4().decompose(object2.position, object2.quaternion, object2.scale);    var parent = object2.parent;    object2.parent = null;    object2.updateMatrixWorld(true);    var box = new THREE.Box3().setFromObject(object1);    object2.parent = parent;    matrix.decompose(object2.position, object2.quaternion, object2.scale);    object2.updateMatrixWorld(true);    return box;}