Abstract: Auto CAD redevelopment based on VBA and the actualization of three-dimensional solid topography is of widely practicability in engineering survey. Three-dimensional solid topography takes place of the traditional quantities calculation method, it’s fast and accurate. This software goes to a deeper level in aspects such as auxiliary design and decision-making assistant. This paper introduced the main functions of Auto CAD applied in large-scale topography drawing procedure, application, prospect analysis and et al.

摘要： 基于VBA对AutoCAD进行二次开发，实现三维实体地形在工程测量中具有广泛的实用性。三维立体地形可使地形直观展示，替代传统工程量计算手段、方法，真正实现快速、准确。本软件对辅助设计、为管理层决策提供准确快速的数据依据等方面有一定深度开发。本文介绍在AutoCAD中开发大比例尺地形绘图程序的主要功能，就自主开发软件在工程中应用、前景分析等内容，与同行交流。