一个随机产生颜色的立方体，按不同的键位完成不同的功能。实现旋转，拉伸，位移， A cube will be colored by random, it can rotate,scaling,shear,translate,if you press the assign key,input your data on command windows

可以通过输入改变茶壶颜色光泽度以及透视与否，当然也可以对环境光进行编辑-You can decide what color the teacup is by input through the key board