/// <summary>
/// 将图片转化成圆形图像
/// </summary>
/// <param name="img"></param>
/// <param name="rec"></param>
/// <param name="size"></param>
/// <returns></returns>
public Bitmap GetRoundPic(Image img)
{
int width = img.Width;
int height = img.Height;
var length = width;
if (width > height)
{
length = height;
}
Rectangle rec = new Rectangle(0, 0, length, length);
Size size = new Size(length, length);
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));
}
}
return bitmap;
}
winfrom 将图片转化成圆形图像
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转载自blog.csdn.net/qq_21275565/article/details/105570288
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