建立正方体的数据模型；编写应用程序，利用菜单和键盘结合的方式完成对正方体的进行移动、比例和旋转变换，并显示透视或平行投影结果。-The establishment of the data cube model write applications using a combination of menus and keyboard to complete the cube to move, scale and rotation, perspective or parallel projectio