AutoCAD环境下图形参数化实现方法研究

在ＡｕｔｏＣＡＤ图形环境下，基于对图形理解的策略，通过数据库中图形实体数据的分析和图形之间约束关系的推理，判断其中图形实体和尺寸实体的关系，并参照机械制图的隐含约束关系，建立图形和尺寸之间的联系，最后基于约束联系，生成ＡｕｔｏＬＩＳＰ参数化绘图程序，避免了人工编程，由此实现了图形的参数化，提高了绘图效率和ＣＡＤ技术的应用水平。

The Research of Graph Parameterization Realizing Method Under AutoCAD

Under AutoCAD, the thesis set up the relation between graph and dimesion through analysing graph entity data in the datum base and restrain relations between graphs, determining relation of graph entity and dimension entity, refering to implicit restrain in mechanical drawing, and bringing about AntoLISP parameter drawing programs and no need programing manually based on the relations between restrains, and then realizing graph parameter and enhance drawing effecincy, and application level of CAD technique.