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

通过opencv、cvSnakeImage实现的主动轮廓追踪算法。-Through the opencv, cvSnakeImage implement active contour tracing algorithm.