在autodesk forge任意轴上获取查看器中每个组件的精确边界框

Question

 let bounds = new THREE.Box3()
      , box = new THREE.Box3()
      , instanceTree = viewer.impl.model.getData().instanceTree
      , fragList = viewer.impl.model.getFragmentList()

        instanceTree.enumNodeFragments(id1, function (fragId) {
            fragList.getWorldBounds(fragId, box)
            bounds.union(box);
        }, true)

我正在尝试此代码，但如果元素不在轴上，则边界不匹配