矢量图的参数化重建系统-VACAD  

A PARAMETRIC REBUILD SYSTEM OF VECTOR DRAWING-VACAD

作　　者：冯秀娟[1] 刘爱军[1] 

机构地区：[1]北京航空航天大学

出　　处：《工程图学学报》1996年第1期60-64,共5页Journal of Engineering Graphics

摘　　要：本文重点探讨了如何将矢量图形进行参数化重建,即从只具备纯几何信息的矢量图中抽取元素间的拓扑信息,从而保证尺寸变动时保持拓朴关系不变,并能对多视图进行同步处理。这一方法的最大优点是用户作图时不受约束,因为系统只处理最终图形。另外,该思想并不局限于AutoCAD环境上,可方便地推广到其它二维绘图系统中。A method for processing parametric rebuild of a vector drawing is discussed. It involves extracting the topology information between the entities from the picture containing only the pure geometric information and realizing dimension-driven variation with the topology remaining unchanged when the dimensions are modified. The prototype has been implemented. The greatest advantage of the suggested method is that the user can freely make drawings without any restriction and the system only processes the final one. This approach can be transplanted conveniently to other drafting systems.

关 键 词：几何约束 参数化 设计 矢量图 

分 类 号：TH126[机械工程—机械设计及理论]