南京航空航天大学硕士学位论文
I 摘 要 虚拟现实技术是由计算机生成的人机交互的三维空间环境构成 增强系统的交互性和沉浸感
航空航天等少数几个领域它以实现三维河流的虚拟场景的实时渲染和显示 三维数据可视化技术
河底的三维空间数据进行三维几何建模最后采用显示列表ＬＯＤ
实现三维河流实时逼真的真实感虚拟场景显示三维河流实时渲染
基于虚拟现实的三维河流仿真系统
II
ABSTRACT
Virtual Reality is composed of the three dimension space scene that is created
by computers and can interact with human beings. It not only could build a virtual scene that is very real and tanglesome, but also the users can interact whit the virtual scene. This all improve the system’s interaction and immersion. With the fast development of the technology in Virtual Reality, the field using this technology is extend to more trade from few industry early ,such as the film industry and the aeronautics and astronautics industry.
This research item , three dimension river simulation system based on virtual reality technology , is a elementary attempt to use virtual reality technology in new field. The researching item is guided by the idea of “Digital earth”, and realize the technology used to render and show the virtual scene of the three dimension river and the function to scan the virtual scene. The system use the three graphics application library OpenGL at the flat tool VC ++ and amalgamate the virtual reality technology, three dimension digital visual, orient object design and programming technology. First, the system builds the model of the bank and bottom of river, according to the river’s information and the information of the scene on the two side of the river. Second, I read and preprocess the model fil
e data and implement the organization and encapsulation about the space data of the virtual river. In the end , adopting to use these rending technology , such as show list, priority texture, and level of detail, I realize the real-time and vivid showing of the three dimension river’s virtual scene and provide abundant ways of people’s interacting with the virtual scene, on base of sufficiently making use of the memory of vision card and the CPU of the computer .
Key words:Virtual Reality, three dimension river, geometry modeling, OpenGL, real-time render.
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图表目录
图1.1 虚拟现实的特征 (2)
图2.1 O PEN GL库的连接 (13)
图2.2 O PEN GL A PP W IZARD工程的建立 (14) 图2.3 O PEN GL A PP W IZARD工程的设置 (14)
图2.4 选定建好的工程文件 (15)
图2.5 使用O PEN GL单文档向导 (15)
苏武留胡节不辱
图2.6
瓶颈工序模型数据的类关系图 (29)
图5.1 河道中心线表示示意图 (45)
图5.2 视域场景动态调度示意图 (47)
附录图1
河道一侧的效果图 (59)
附录图4
树的高精度模型显示效果图 (60)
附录图7
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1第一章 绪论
１．１ 研究背景
随着计算机硬件技术和软件技术的飞跃发展
并和其他学科形成越来越多的
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