Abstract:

In accordance with the present situation and some problems in the area of 3D modeling, the technology of 3D modeling based on discrete algorithm was proposed. From the view of engineering application, this paper mainly discussed the data pre-processing of the 3D model face, the discretization of the 3D model face, topological relation based on the discretization meshwork model and mutual division algorithm of 3D model. Finally combining OpenGL,the Object ARX and Oriented Object Programming(OOP) technology, a simulation system of mineral deposit 3D model has been developed. The result shows that the 3D modeling method is much simple and practical, and has a wide area of application.

Key words: 3D model, CAD, simulation system, virtual reality

摘要：

针对目前三维建模领域的现状及存在的一些问题,提出了基于离散算法的三维建模技 术。从工程应用的角度出发,主要讨论了三维实体表面的数据预处理、三维实体表面的离散化以及离 散网络模型的拓扑关系和模型交互剖切算法,最后结合开放图形连接库OpenGL、ObjectARX以及面 向对象程序设计(OOP)技术开发了一套矿床三维模型仿真系统。运行结果表明该三维建模方法操 作简单、实用性强,具有很好的推广应用前景。

关键词: 三维模型, 计算机辅助设计, 仿真系统, 虚拟现实