公路路线设计的一体化与可视化

来源期刊：中南大学学报(自然科学版)2004年第5期

论文作者：蒲浩 宋占峰 詹振炎

文章页码：830 - 835

关键词：计算机辅助设计;公路路线设计;一体化设计;三维可视化;实时显示

Key words：CAD; highway geometric design; integrative design; 3D visualization; real-time rendering

摘    要：针对现有的公路路线计算机辅助设计系统平、纵、横设计分离的弱点,提出并实现了一种新的公路路线设计方法:应用多视窗技术创建路线平、纵、横断面集成的路线一体化设计平台,应用ObjectARX的响应器和通知技术实现了路线平、纵、横的关联设计与交替设计。在此基础上,采用分割-归并思想建立了路线三维模型,应用视锥截取、LoD技术实现了路线三维模型的视相关简化,并开发了公路三维场景的实时动态浏览平台。最后将该平台与一体化设计系统集成,实现了路线设计的一体化与可视化。实践结果表明,该方法使常规的二维设计提升为三维可视化设计,能大幅度提高设计质量和效率。

Abstract: To eliminate those defects that the separated horizontal ,vertical and cross section designs in existing road route computer aided design (CAD) systems, a novel method for highway alignment design was put forward . By using MDI, and by applying the technologies of reactor and notification of ObjectARX, the route horizontal ,vertical and cross section designs were integrated in the same interface to create the integrative design platform where these three kinds of designs could be carried out alternately and correlatively. Based on that, the thought of divide and conquer was adopted to build the highway 3D model, thus technologies as frustum culling and level of detail were applied to accomplish the view-dependent simplification of route 3D model, and the highway 3D browsing platform was worked out. Finally, the 3D browsing platform and the integrative design system were combined with each other, achieving the integration and visualization of highway alignment design. The applications show that this method upgrades the traditional 2D route design to 3D visualizing design and promotes the design quality and efficiency to a great extent.