实现缺角立方体的旋转，VC实现，在WINXP上运行，缺角正方体可以绕X,Y,Z和中心进行旋转，画面清晰-realize na corner cube rotation, VC, in WINXP run, and none could be around the corner cube X, Y, Z and the center rotation, clear picture

VC++与Matcom混合编程，基于对话框画出正弦曲线，可以设置X轴的大小-VC++ and Matcom mixed programming, based on the dialog box to draw the sine curve, you can set the size of the X-axis

二维几何变换的基本变换矩阵,包括向上/下平移，基于原点对称，相对x轴/y轴对称，相对中心点向左/右旋转，相对中心点缩小/放大，x轴/y轴正向及反向错切。(The basic transformation matrix of two-dimensional geometric transformation.)