我的计划是加载并转换整个 CDA，然后允许通过 DOM 进行交互式访问，这样我就能拥有一个名为 div-cache 的 div 元素，我将该元素隐藏在 CDA Viewer 底部。
My plan is to load the entire CDA and transform it, then allow interactive access through the DOM so that I have a div element called div-cache, which I have hidden at the bottom of the viewer.
只有当你的程序修改一个在场景图中隐藏很深或者经由用户交互式而被选择的节点的时候，问题才会比较复杂。
The problem becomes more complex if your application modifies a node that is buried deep within a scene graph or selected interactively by a user.
最后，在基于感兴趣区域的隐藏策略方面，本文提出了一种交互式的信息隐藏方法，并给出实验结果。
Finally the paper gives out a mutual hiding strategy, which is based on interested region.
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