用opengl做时钟的旋转表，增加一些光照效果和时间上的计算-Rotating table, increasing the calculation of some of the lighting effects and time clock with opengl

适合于计算机图形学初学者，运用opengl中的平移变化，旋转变换，一个桌子和一个茶壶可以同时旋转。-Computer graphics suitable for beginners to use opengl shift change, rotation transformation, a table and a teapot can rotate at the same time.