基于 VBA 的 AutoCAD 中间圆弧命令开发

摘要

The paper uses the strong secondary development function of AutoCAD software to study the common issue of drawing inter-mediate circular arc in engineering drawing,and deduces a mathematical model to solve the problem.It designs the process diagram u-sing VBA programming language,and writes command procedures and user interface.Based on examples,it is indicated that the com-mand is easy to use and could draw intermediate arc conveniently.Compared with the conventional method using auxiliary lines,draw-ing efficiency is greatly improved,the workload of drawing staff is reduced and their work efficiency is improved.The order also extends the function of AutoCAD drawing circles.%利用 AutoCAD 软件强大的二次开发功能，对在工程制图中常见的中间圆弧绘制问题进行研究，推导出解决绘制该圆问题的数学模型。并设计了程序框图，使用 VBA 编程语言，编写出命令程序和用户界面。通过实例验证，得出该命令使用方便，并能快捷地绘制中间圆弧。与常规辅助线绘制方法相比，绘图效率大大提高，减轻绘图人员的工作负担，提高了工作效率。该命令也扩充了 AutoCAD 绘圆功能。