光线跟踪算法，能显示基本图形（球形，立方体，墙面），实现阴影，高光，反射，折射等效果-Ray tracing algorithm, can display basic graphics (sphere, cube, wall), to achieve shadows, light, reflection, refraction and other effects

ray tracing 在opencv + VS2015 的实现代码(it is the ray tracing program code using opencv + VS2015)