For the implementation of simulation, the ray-tracing technique is employed by considering the shadow testing of surface model of polyhedron, the surface model of polyhedron and its electric characteristic, the viewgraph of the ray-tracing technique, etc. 应用射线追踪技术考虑了多面体模型中阴影测试法、多面体面模型及其电特性、射线追踪可视化技术等。