In the algorithm of mesh simplification based on vertex clustering, a vertex tree is built to represent the data structure of the models by octonary subdivision.
在基于顶点聚类的网格简化算法中，通常对网格模型进行八叉剖分来建立一棵顶点树以表示整个网格模型的数据结构；
The generation algorithm of adaptive mesh which is based on the quad-tree data structure is presented.
以四分树为数据结构，建立了网格细分法生成自适应网格算法。
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