纯色背景才可剔除;

批量导出png;

修改config.txt

#剔除的背景色
bkgcolor:0,254,0
#源文件夹
srcPath:./src
#目标文件夹
distPath:./new

运行PngTool.exe

主要方法:将颜色和bkgcolor相同的像素,alpha值改0;

用惯了c#的库真越觉得c#真是个优雅的语言,写起来比cpp简单太多了;

public static void SetTransparent(string path, Color bkgCol, string distPath)
{
    Bitmap bmp = new Bitmap(path);
    for (int h = 0; h < bmp.Height; h++)
    {
        for (int w = 0; w < bmp.Width; w++)
        {

            Color color = bmp.GetPixel(w, h);
            if (color.R == bkgCol.R && color.G == bkgCol.G && color.B == bkgCol.B)
            {
                color = Color.Transparent;
                bmp.SetPixel(w, h, color);
            }
        }
    }

    string savePath = path.Split('\\').Last<string>();

    bmp.Save(distPath + "/" + savePath);
    bmp.Dispose();
}

下载地址:https://files.cnblogs.com/files/blogs/703006/pngtool.7z?t=1654761000