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 file 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 它主要融合虚拟现实技术、三维数据可视化技术、面向对象的设计和编程技术,在vc + +平台上,利用opengl三维图形开发库,以真实的城市河道现状信息和周边景物信息为依据,对河道、河底的三维空间数据进行三维几何建模;然后通过读取和预处理模型文件数据,实现虚拟场景空间数据的组织和封装操作,并对空间数据进行优化;最后采用显示列表、纹理优先级、细节层级模型( lod )等渲染技术,利用opengl的渲染特性,在充分发挥显卡内存、处理器等各种软硬件资源的基础上,实现三维河流实时逼真的真实感虚拟场景显示,并提供丰富的人机交互手段。
Put forward several kinds of system optimizing methods . this paper introduces the process of 3d max models input opengl , interaction , and implemention of the bounding box collision detection methods , and illustrates the process and technology of system optimizing methods such as multi - display list , double buffer , system startging speed and screen shaking removed when mouse moving 论文对3dmax模型导入opengl的过程、交互操作、包围盒碰撞检测方法的实现作了具体介绍，阐述了多重显示列表、双缓存技术、系统启动速度和鼠标移动屏幕晃动消除等系统优化方法的实现过程。
The paper mentions the design of three - dimensional graphics modeling in the mine such as shaft , laneway , and equipment of transport and mining . human - computer interaction and viewpoint rambling in the demo system are realized so that the simulating staff may look at circumstances from different viewpoint and positions . under the precondition of limited resources holding , the contradiction between the fidelity of image display and real - time feature of system interaction process is better resolved with using of display list and model culling technology 论文中采用了opengl图形库的基本绘图函数进行三维图形的模型设计，并详细给出了立井、拱形巷道、梯形巷道以及工作面支架和井底运输巷道设备的三维图形设计方法；并着重分析人机交互与视点漫游功能的技术在系统中的实现；在占用有限资源的前提下，为了提高场景实时显示速度，论文中采用显示列表和模型淘汰等技术，并编制出了一个虚拟矿井实例。
As for the 3d modeling , the respondent modeling method is anglicized according to the characteristics of various sceneries . the simplicity of drawing method is proposed by combine the method of displaying list , terrain segmentation and vertex removing , which fulfilled the real - time display of a great scale terrain . as to the second problem , the quantitative relationship of view body and visual angle is deducted based on the theory of mathematics , which resolves the problem of aircraft pose display with better visual effect in simulation . these display the author ' s creative works 在前者中，针对于各种景物的特点提炼出了相应的建模方法，并提出了将显示列表、地形分割和顶点删除法相结合的地形简化绘制方法，实现了较大规模地形的实时显示；在后者中，作者从数学角度推导出了视景体和飞行姿态角的定量对应关系，解决了飞行姿态显示的问题，通过仿真，获得了较好的视觉效果。
