public Bitmap GetImage(Bitmap bmp, float py)
{
Bitmap bitmap;
if(py==90 || py==270)
{
bitmap= new Bitmap(bmp.Height, bmp.Width);
}
else
{
bitmap= new Bitmap(bmp.Width, bmp.Height);
}
Graphics g = Graphics.FromImage(bitmap);
g.TranslateTransform(bmp.Height, 0);
g.RotateTransform(py);
g.DrawImage(bmp, new Point(0, 0));
return bitmap;
}
C#利用Graphics类绘制进阶--图片旋转
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转载自blog.csdn.net/HorseRoll/article/details/85230089
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