基于布尔运算的VRML模型创建技术研究

Research on modeling technology for VRML models based on Boolean calculation

在分析VRML造型功能和几何元素求交特点的基础上,利用计算机图形学中的几何造型理论,将布尔运算的思想引入VRML造型过程,提出了利用拓扑信息遍历三维几何元素、结合几何信息实现三维状态下点归并进而构建新形体的思想,实现了基于VRML环境下的几何形体集合运算,提高了VRML造型的效率.

Based on analyzing the modeling function of VRML and the characteristic of computing the intersection set of geometrical element, and using theory of geometry modeling in computer graphics, this paper introduces the theory of boolean calculation to VRML modeling course, proposes a thought that new body can be constructed through searching the three-dimensional geometrical element by topological information and implementing point mergence in three-dimensional condition combined with geometrical information. This paper implements set operation for geometrical body based on VRML and raises the efficiency of constructing VRML model.