基于Auto CAD的公路辅助设计

Road aid design for based on AutoCAD

近年来，公路设计部门已普遍采用计算机辅助公路设计，文章以线段连接、汉字标注等为例讨论了如何利用Ｃ语言和ＡＤＳ生成图形。基于ＡｕｔｏＣＡＤ平台，用ＡｕｔｏＬｉｓｐ 语言进行了ＡｕｔｏＣＡＤ的二次开发，讨论了建立线段连接作图命令集和ＡｕｔｏＣＡＤ下实现多种汉字标注的基本原理和方法，使用这些方法能提高工程作图的效率。

In recent years,many road design departmants have applied computer aided road design.The paper takes the segment link and Chinese character annotation as examples to discuss how to use lauguage C and ADS to draw figure .Based on AutoCAD platform, the second development of AutoCAD is carried out by AutoLisp language,the segment link user defined command are established,and the methods for achieving various Chinese character annotation by AutoCAD are discussed.It is possible to improve the efficiency of engineering drawing by the methods.