面向匝道的立交规划方案三维设计系统的计算机实现

The Realizing of Computer Aided Interchange Planning Design System Based on Three - dimensional Ramp

本文在分析工程ＣＡＤ技术发展特点的基础上．引进了三维匝道的立交方案设计的概 念，采用了集成化开发技术、面向对象思想和建模技术、ＡＵＴＯＣＡＤ二次开发的核心 技术和 ＷＩＮＤＯＷＳ的 ＯＬＥ核心开发等技术，对立交方案规划 ＣＡＤ系统进行了总体 设计，并在此基础上，以三维匝道的数据链为构架，模拟立交方案三维设计的过程，进 行了系统的详细设计。

Based on characteristics analysis of the development of the Engineering CAD, the paper introduces the conception of interchange design based on three - dimensional ramp. Then the technology of integration, object - oriented, core of AutoCAD development System and Windows object - linking - embedding is applied to complete the collectivity design of the CAD system. At last, the detail design is formed on the data class of three - dimensional ramp.