Based on a point line patch hierarchical data structure, three dimensional complex geometries are described by several typical kinds of surface patches.
按点-线-面的层次数据结构，选取几种有代表性的曲线曲面，实现了三维复杂外形的表面描述。
But you can conceptualize a four-dimensional data structure by thinking of the fourth dimension as multiple three-dimensional cubes.
但是您可以采用将一个四维数据结构看作是多个三维立方体的方式来理解四维数据结构。
It designs its own data structure and file storage structure, and does a further study of the three-dimensional graphics platform instruction.
本系统设计了自己的数据结构和存储结构，对三维图形建模平台的构建进行了一定的研究。
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