改进的Undo/Redo机制在绘图CAD中的应用  

The Application of Improved Undo/Redo Mechanism in Graphic CAD System

作　　者：王玥[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《现代机械》2008年第1期74-76,共3页Modern Machinery

摘　　要：为了增强CAD系统的灵活性,提高设计的效率,本文引入设计模式概念,通过对数据对象的持久化,设计出一套支持无限Undo/Redo和批量化操作的CAD图形绘制系统,文章介绍了各模块的实现原理及核心算法。In order to strengthen the flexibility in CAD system and improve the efficiency in the designing;we employ a design pattern based on the original system.A graphics CAD system which supports the unlimited Undo/Redo is devised through the persistence of the data objects.Implementation principles and key algorithms of each module will be discussed in detail in this paper.

关 键 词：无限撤消/重做 设计模式 对象持久化 批量化操作 绘图CAD 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]