摘要
鉴于虚拟校园广受关注和VRML广泛应用的背景,以虚拟图书馆建设为例,探讨VRML虚拟场景的构建、优化和调度问题.给出了虚拟图书馆的开发流程,并从基础数据收集与整理、三维模型建立、三维模型优化等方面,给出了虚拟图书馆的构建过程.采用基于Visibility Sensor的调度算法,对进入视域范围的场景进行调度.利用LOD思想,对视域内的物体根据视点距离调度不同精度的模型,实现了VRML场景的快速浏览.经过发布与测试,表明VRML虚拟图书馆具有操作简单、逼真度高、适应性强等特点,在网络运行顺畅,实用价值较高.
In the view of wide application of virtual campus based on VRML, taking the construction of Virtual Library as an example, this paper discusses the construction and optimization of VRML virtual scene. The development process from basic data collection, 3D model establishment, 3D model optimization angles is presented. Using visibility sensor schedule algorithm and LOD idea, this paper dispatches the scene in horizon range, achieving a quick view of the VRML scene by dispatching object in the horizon according to the viewpoint of distance operation. Through publication and testing, the VRML virtual library has the characteristics of simple operation, high fidelity, strong adaptability and high practical value.
出处
《计算机系统应用》
2016年第4期252-257,共6页
Computer Systems & Applications
基金
2014年广州市哲学社会科学"十二五"规划课题(14G56)
广东省教育科学"十二五"规划2014年度教育信息技术研究项目(14JXN018)
广州市教育科学2013年度课题(2013A238)
关键词
VRML
虚拟现实
虚拟图书馆
开发与应用
VRML
virtual reality
virtual library
development and application
