虚拟仿真中二维圆形区域与三维实体的融合显示

针对虚拟仿真应用程序开发中的二维圆形区域与三维实体模型的融合显示问题，提出了一种简便的解决方案，即用聚光光源产生的光斑来模拟二维圆形区域在三维目标模型上的影印效果。文中阐述了方法的应用背景，实现的具体算法，描述了在Vega开发环境下实现此方案的详细步骤和具体方法。用此方法实现二维圆形区域与三维实体的融合显示不仅具有实现方便、效果自然的特点，而且算法简单，实现速度快，可以满足虚拟仿真的实时性要求。

Fusing Display of Circular Area on 3D Model in Virtual Simulation

For the question of fusing display of circular area on 3D model, a simple solution was put out, that used a spot light source to simulate the fusing effect of circular area display on 3D model. The applying background and the algorithm were expatiated. Meanwhile, the detail approaches and method of realizing the solution were discussed. This solution has the advantages of easy realizing, natural effect, simple algorithm and less calculation time. This method is propitious to apply in real time applications.