摘要：
public static Bitmap RotateImage(Image image, int iw, int ih, float angle, out Point[] points) { if (image == null) throw new ArgumentNullException("image"); const double pi2 = Math.PI / 2.0; // Why can't C# allow these to be cons... 阅读全文
摘要：
/// <summary>
/// Creates a new Image containing the same image only rotated
/// </summary>
/// <param name="image">The <see cref="System.Drawing.Image"/> to rotate</param>
/// <param name="angle">The amount to rotate the image, clock 阅读全文
摘要：
/// <summary>
/// 处理图片透明操作
/// </summary>
/// <param name="srcImage">原始图片</param>
/// <param name="opacity">透明度(0.0---1.0)</param>
/// <returns></returns>
private Image TransparentImage(Image srcImage, float opacity)
{ float[][] nAr 阅读全文