说明：  利用GDI+实现图像几何变换，内容核心是GDI+强大的几何变换功能。介绍了如何利用坐标实现图像的几何变换
(The use of GDI+ implementation image geometric transformation, the content of the core of GDI+ are powerful geometric transform function. Introduce how to use the image coordinates implementation of the geometric transformations)