【摘要】 ：21 世纪的人类社会是信息化社会，以信息技术为主要标志的高新技术产业在整个经济中的比重不断增加，多媒体技术及产品是计算机产业进展的活跃领域。虚拟现实理论与技术的应用，使设计思路和设计表达如虎添翼。它是随着科学和技术的进步、军事和经济的进展而兴起的一门由多学科支撑的新理论技术，可以很好地面对市场全球化的要求，并且有助于人们更好地去解决资源问题、环境问题与需求多样性问题。与传统开发设计的产品相比，大大减少了投放市场的风险性，也为企业决策人寻找商机、推断概念产品能否进一步开发生产，提供更好的依据，也为人类的生活和工作提供全新的信息服务。本文将从虚拟现实定义及原理、特征、应用、未来进展方向及讨论重点方面介绍虚拟现实理论与技术。【关键词】 ：虚拟现实 理论 技术 讨论状况 进展方向【 Abstract 】 ： Modular fixture configuration design is a complicated task requiring strong professional background and practical experience. However, automated or semi-automated computer aided modular fixture systems based on CAD packages still are not well accepted by the manufacturing industry due to the lack of intuitive interaction and immediate feedback compared with traditional models such as paper and physical models. In this paper, a novel Virtual Reality-based system for interactive modular fixture configuration design is presented. We use a multi-view based modular fixture assembly model to assist information representation and management. In addition, the suggested strategy is compatible with the principles of virtual environment and it is easy to reutilize the element model. Based on geometric constraints, we propose a precise 3Dmanipulation approach to improve intuitive interaction and accurate 3Dpositioning of fixture components in virtual space. Thus, the modular fixture configuration design task can precisely be performed in virtual space.【1】【 Key words 】 ： virtual reality, theory, technology, research sta...
