面向对象的交互显示和拾取模型研究  

Object-oriented Interactive Presentation and Selection Model

作　　者：龚堰珏[1] 贠敏[1] 姜虹[1] 王小椿[1] 

机构地区：[1]西安交通大学机械学院数控所,西安710049

出　　处：《系统仿真学报》2003年第1期29-31,共3页Journal of System Simulation

摘　　要：针对三维CAD/CAM系统可视化交互部分的实现,深入研究了可视化关键技术——三维形体在计算机屏幕上显示和拾取的具体运行机制,采用面向对象思想构建了各自不同的模型框架. 能够清楚高效地实现交互显示、拾取过程,简化系统结构,使系统具有层次性,易于维护. 在此基础上,对显示和拾取进一步进行封装,合二为一,建立了两者统一的可视化数据模型,模型结构清晰,在面向对象环境下容易实现,体现了软件良好的封装性和复用性。This paper first studies in detail the running mechanism of presentation and selection, which are the key techniques of visualization, according to the implementation of interactive visualization in 3D CAD/CAM system. Then the two different models have been built based on the object-oriented theory, and they are able to efficiently carry out the visualization process, and simplify the system structure and maintenance. Further, the uniform visualization data model with clear structure is achieved to put out the good characteristics of encapsulation and reusing.

关 键 词：面向对象 交互显示 拾取模型 仿真系统 可视化 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]