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  • asp.net C# 将图片裁剪成圆形,并保存到本地

    //将图片裁剪成圆形

         private Image CutEllipse(Image img, Rectangle rec, Size size, string imgSavePath)
            {
                Bitmap bitmap = new Bitmap(size.Width, size.Height);
                using (Graphics g = Graphics.FromImage(bitmap))
                {
                    using (TextureBrush br = new TextureBrush(img, System.Drawing.Drawing2D.WrapMode.Clamp, rec))
                    {
                        br.ScaleTransform(bitmap.Width / (float)rec.Width, bitmap.Height / (float)rec.Height);
                        g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
                        g.FillEllipse(br, new Rectangle(Point.Empty, size));
                    }
                }          
                bitmap.Save(imgSavePath, System.Drawing.Imaging.ImageFormat.Png);
                return null;
            }

    //方法调用

         imgPath = "~/submitImages/20180913094627.png";
            Image image = Image.FromFile(HttpContext.Current.Server.MapPath(imgPath));       //判断图片是否已经存在,若存在,删除
            if (!File.Exists(imgSavePath))
            {
                //File.Delete(Path.GetFullPath(imgSavePath));//删除存在
                //将图片裁剪成圆形,并保存到本地
                CutEllipse(image, new Rectangle(0, 0, 200, 200), new Size(200, 200), imgSavePath);
            } 
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  • 原文地址:https://www.cnblogs.com/ciel-shan/p/10908721.html
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