基于ObjectARX的AutoCAD图形区域划分算法研究

Research on Region Division Algorism for AutoCAD Drawings Based on ObjectARX

机械零件图具有明显的区域特征,图形矢量聚集在若干视图区域内。针对AutoCAD生成的机械零件图,提出了3种图形区域划分方法,即基于实体包容矩形融合运算图形区域划分法、基于扫描线图形区域划分法和基于实体相交特性图形区域划分法,采用ObjectARX编程解决了图形区域划分问题。举例说明了方法的有效性。

Some characteristics in mechanical part drawings exist obviously with some vector elements gathered in some view regions. Three methods of region division by using ObjectARX are proposed, such as the graph region division based on entities＇ minimum exterior rectangle fusion, the graph region division based on scanning beam, and the graph region division based on entities＇ intersection characteristic. They are all effective ways to deal with the region division problems for AutoCAD drawings. Some examples are given.