视景仿真的关键技术

Key Techniques in Scene Simulation

针对视景仿真开发中的几个常见问题,提出了解决方案。包括:利用回调函数将OpenGL代码嵌入到Vega应用程序中,实现Vega中未能提供的图形功能;分析了视景坐标系与模型坐标系之间的对应转换关系,给出两种常用的转换公式;概述了通用视点方式的设计方法,通过开发自定义运动模式实现了以输入设备控制视点的方法。

The methods for settling some key problems of scene simulation are proposed in this paper. They include adding the OpenGL code into Vega application through the callback functions,and realizing the image functions not provided in Vega. In this paper,the coordinates transform between 3D coordinates and model coordinates is analyzed,two kinds of transform formula are given and the methods of observer design are summarized. Through developing user defined motion model,the input devices are introduced in the application to control the observer.