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这个是效果图,根绝x y w h来截图原图片
- /// <summary>
- /// 截取一张图片的指定部分
- /// </summary>
- /// <param name="bitmapPathAndName">原始图片路径名称</param>
- /// <param name="width">截取图片的宽度</param>
- /// <param name="height">截取图片的高度</param>
- /// <param name="offsetX">开始截取图片的X坐标</param>
- /// <param name="offsetY">开始截取图片的Y坐标</param>
- /// <returns></returns>
- public static Bitmap GetPartOfImageRec(Bitmap sourceBitmap, int width, int height, int offsetX, int offsetY)
- {
- //Bitmap sourceBitmap = new Bitmap(bitmapPathAndName);
- Bitmap resultBitmap = new Bitmap(width, height);
- using (Graphics g = Graphics.FromImage(resultBitmap))
- {
- Rectangle resultRectangle = new Rectangle(0, 0, width, height);
- Rectangle sourceRectangle = new Rectangle(0 + offsetX, 0 + offsetY, width, height);
- g.DrawImage(sourceBitmap, resultRectangle, sourceRectangle, GraphicsUnit.Pixel);
- }
- return resultBitmap;
- }
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