精灵图形的边缘相对对齐。
可能的值与 SpriteAlignment 枚举相关，如下所示：Center = 0、TopLeft = 1、TopCenter = 2、TopRight = 3、LeftCenter = 4、RightCenter = 5、BottomLeft = 6、BottomCenter = 7、BottomRight = 8、Custom = 9。另请参阅：SpriteAlignment 枚举。