面向对象的约束系统分析与实现框架  

Object-Oriented Analysis and Implementation Framework of Geometric Constraint System

作　　者：龚雄[1] 王波兴[1] 陈立平[1] 

机构地区：[1]华中科技大学CAD中心,湖北武汉430074

出　　处：《工程图学学报》2008年第6期27-32,共6页Journal of Engineering Graphics

基　　金：国家自然科学基金资助项目(60503069);湖北省自然科学基金资助项目(CGZ0021)

摘　　要：通过分析工程设计中的几何约束问题,运用面向对象方法对通用约束求解器(CBA)进行了剖析。从约束建模和求解的算法共性出发,确立了虚体、约束关系和约束分量的概念,由此解决了不同应用领域和不同几何层次的几何实体和几何约束的统一建模问题。详细解释了CBA主要对象族的设计思想,简述了CBA的实现框架。The geometric constraint problems from engineering design are analyzed firstly, and the common constraint solver, called Constraint Broadcasting Automation （CBA）, is investigated by the object-oriented method. Considering the commonness of constraint modeling and solving algorithms, several important concepts used in CBA, including Virtual Body, Constraint Relation, and Constraint Component, are emphasized. As a result, the united constraint modeling problems from various application fields and for different geometric dimensional elements and constraints, are addressed. The design idea of primary object families in CBA is explained in detail, and its implementation framework is described briefly.

关 键 词：计算机应用 几何约束建模 约束求解 约束分量 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]