| 摘要: |
| 本文分析了国际上最有影响的2种几何造型数据结构:翼边结构和辐射边结构．并提出了一种新的数据结构邻维循环结构．邻维循环结构与辐射边结构一样,具有统一表示线框、表面和实体模型的能力，可以表示点有任意条邻边,边有任意个邻面的形体模型．在拓扑结构部分，邻维循环结构所占存储空间比辐射边结构的对应部分要小一半左右．而在各种拓扑关系的检索效率上，两者的效率相同． |
| 关键词: 几何造型，数据结构，邻维，翼边，辐射边． |
| DOI： |
| 分类号: |
| 基金项目: |
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| RESEARCH AND IMPLEMENTATIoN oF THE DATASTRUCTURE FOR NEW GENERATION GEOMETRICMoDELING SYSTEM |
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Chen Yujian,Yang Changgui,Tian Lüzhu,Sun Jiaguang
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| Abstract: |
| Two most influencial data structures for modeling i．e．，winged edge and ra-dial edge structure are analysed．A new data structure——structure cycling between adja-cent dimensions is proposed．Similar to radial edge structure，the new structure is capable of representing wireframe，surface and solid models in a unified scheme．It is also capable of representing a model with some vertices having arbitrary number of adjacent edges and some edges having arbitrary number of adjacent faces．The topological part of the new structure is about half in size compared with the same part of the radial edge structure．However the efficiency for accessing topological relation is the same for the two structures． |
| Key words: Geometric modeling,data structure,adjacent dimension,winged edge,radial edge． |
