文档介绍：虚拟现实技术能够利用计算机生成较为真实的模拟环境,使用户沉浸在虚拟环境中,同时通过人机接口实现用户与虚拟环境直接交互。三维场景漫游系统是虚拟现实技术的综合应用,它在沉浸感、交互性与实时性方面的优势是传统二维效果图及二维和三维动画技术所无法比拟的。
三维场景漫游系统的难点在于三维场景模型绘制的真实感和模型的实时绘制效率之间的平衡。为了保证一定的绘制质量,又不造成用户在系统内漫游时的运动不适,应该采用优秀的建模方法来降低场景的复杂度,同时运用场景简化技术来提高系统执行效率。
本文首先介绍了虚拟现实技术,分析了三种主要的三维场景漫游技术,并通过3ds max和Virtools软件开发了一个井场虚拟漫游系统。系统中实现了视点前进、后退、左右平移、自动漫游、自由漫游等控制功能,为用户提供了较好的交互性。
关键词:虚拟现实;漫游系统;Virtools
Abstract
Virtual Reality technology could generate a virtual environment by the using puter which enables the user being immersed in the environment while the user could interact with the environment through puter interface directly. prehensive implementation of VR is the developing of a 3D-scene roaming system, which is much more better then the traditional printed map or the 3D animation effects in the aspects of immersion sense, interaction and real-time.
The difficulty of the system lies in how to balance between the reality sense of the model and the real-time rendering efficiency. In order to acquire a smooth roaming effect and rendering quality, the excellent modeling technique is adopted into the system to reduce the plexity, and the scene optimization technique is also used to improve the executing efficiency.
The VR technology is introduced firstly in this paper, and three main types of 3D-scene roaming technique are also analyzed. And finally, 3DS Max modeling and developing roam engine and Virtools bined to develop a wellsite roaming system. The controlling function, which includes backward and forward moving, left and right translate, auto roaming, free-style roaming etc., is realized in the system preferably while providing the user a friendly interactive environment.
Key words:Virtual Reality ; Roaming system; Virtools
目录
第1章虚拟现实技术概述 1
虚拟现实技术特征 1
虚拟现实系统的分类 2
虚拟现实技术的应用 2
第2章三维场景漫游技术 4
三维场景漫游概述 4
三维场景漫游技术分类 5
第3章开发工具介绍 8
三维建模工具3ds max 8
Virtools开发环境简介 10
第4章漫游系统的模型构建 13
三维建模技术 13
系统模型构建 15
第5章漫游系统的实现 23
3ds max模型的导出 23
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