Rotaes + flips images. It does this quickly because : 1/ it uses the API's GetPixel and SetPixel. 2/ it pre-calculates as many variables as possible. Made primarily for uses in making graphics in computer games.
来源: http://www.freevbcode.com/ShowCode.Asp?ID=1043
旋转和翻转图片。它之所以这么快是因为:1/它使用API GetPixel和SetPixel函数;2/它尽可能的预先计算多种变量。它主要是为在计算机游戏中制作图片而设计的。