MFC框架下Vega视景的视点控制技术

摘要

In a wide range of visual simulation battlefield environment, the motion state of simulation entities are complicated and changeable. In order to solve this visual simulation of fidelity problems, this paper analyzes the geometry correspondence relationship between the observer and the target, gives three control modes: equidistant mode, uniform speed mode, uniform acceleration mode, the basic algorithm of observer controlling in virtual scene is designed. Under the MFC framework, applying of Vega API function achieves the C language calling Vega visual simulation platform, achieving the observer servo control method for the target, solving the problem of observer automatic controlling in visual simulation system. In the visual simulation experiments, a flexible controlling to viewpoint way is achieved, with a strong practical intuitive property, while enhancing the realism and interactivity of viewpoints.%大范围战场环境的视景仿真中，仿真实体运动状态复杂多变。为解决这种视景仿真的逼真性问题，通过对观察者和目标间几何对应关系的分析，给出了三种控制模式：等距离模式、等速度模式、匀加速模式，设计了虚拟视景中视点控制的基本算法。在MFC框架下，应用Vega API函数实现C语言对Vega视景仿真平台的调用，实现了视点对目标的随动控制方法，解决了视景仿真系统中视点的随动控制问题。在视景仿真实验中，达到了对视点方式的灵活控制，具有较强的现实直观性，同时增强了视景的真实感和交互性。