本文介绍了一种图象旋转的方法，方法原理是先算出旋转后的坐标，再将原有图像数据按照新的坐标输出就可以得到旋转了的图像。-This paper presents a method of rotating the image, the method principle is to calculate the rotated coordinates, then the original image data output according to the new coordinates can be r