c#图片处理之图片裁剪成不规则图形

前端技术 2023/09/02 C#

为了让大家知道下面内容是否是自己想要的，我先发效果图。

好了，那就开始贴代码了

以下为一个按钮的事件，为裁剪准备图片、裁剪路径、保存路径

复制代码 代码如下:

private void button1_Click(object sender, EventArgs e)
        {
            GraphicsPath path = new GraphicsPath();
            Point[] p = {
                            new Point(424,244),
                            new Point(240,440),
                            new Point(340,552),
                            new Point(550,526),
                            new Point(478,366),
                            new Point(348,660),
                            new Point(424,244)
                        };
            path.AddLines(p);
            OpenFileDialog openFileDialog = new OpenFileDialog();

            openFileDialog.Filter = @\"Bitmap文件(*.bmp)|*.bmp|Jpeg文件(*.jpg)|*.jpg|所有合适文件(*.bmp,*.jpg)|*.bmp;*.jpg\";

            openFileDialog.FilterIndex = 3;

            openFileDialog.RestoreDirectory = true;

            if (DialogResult.OK == openFileDialog.ShowDialog())
            {

                Bitmap bit = (Bitmap)Bitmap.FromFile(openFileDialog.FileName, false);

                Bitmap newBit = null;
                BitmapCrop(bit, path, out newBit);
                newBit.Save(@\"C:\\Users\\Public\\Pictures\\Sample Pictures\\沙漠22.jpg\");
            }
        }

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