C#图像处理问题
部分代码
private static Bitmap Cut(Bitmap b, int StartX, int StartY, int iWidth, int iHeight)
{
if (b == null)
{
return null;
}
int w = b.Width;
int h = b.Height;
if (StartX >= w || StartY >= h)
{
return null;
}
if (StartX + iWidth > w)
{
iWidth = w - StartX;
}
if (StartY + iHeight > h)
{
iHeight = h - StartY;
}
Bitmap bmpOut = new Bitmap(iWidth, iHeight, PixelFormat.Format24bppRgb);
SolidBrush b1 = new SolidBrush(Color.Red);
//Rectangle rect = new Rectangle();
using (Graphics g = Graphics.FromImage(bmpOut))
{
TextureBrush b2 = new TextureBrush(Image.FromFile(Application.StartupPath + "\\cm.png"));
g.DrawImage(b, new Rectangle(0, 0, iWidth, iHeight), new Rectangle(StartX, StartY, iWidth, iHeight), GraphicsUnit.Pixel);
for (int i = 0; i < 22; i++)
{
if (data.Yzcode[i] > 0)
{
Point pbuton = (Point)CMlist[i];
/*for (int j = 0; j < data.Yzcode[i] / 10; j++)
{
pbuton.Y = pbuton.Y - j;
rect.Location = pbuton;//更改这个矩形的起点坐标
b2.TranslateTransform(pbuton.X, pbuton.Y);
rect.Width = b2.Image.Width;//更改这个矩形的宽来
rect.Height = b2.Image.Height;//更改这个矩形的高
g.FillRectangle(b2, rect);
}*/
//b2.Transform.
//rect.Location = pbuton;//更改这个矩形的起点坐标
b2.TranslateTransform(pbuton.X, pbuton.Y);
//rect.Width = 52;//更改这个矩形的宽来
//rect.Height = 33;//更改这个矩形的高
g.FillRectangle(b2, pbuton.X,pbuton.Y,52,33);
g.DrawString(data.Yzcode[i].ToString(), new Font("宋体", 10), b1, new PointF(pbuton.X + 10, pbuton.Y + 6));
}
}
/*Point pbuton = new Point();
TextureBrush b2 = new TextureBrush(Image.FromFile(Application.StartupPath + "\\cm.png"));
rect.Location = pbuton;//更改这个矩形的起点坐标
b2.TranslateTransform(pbuton.X, pbuton.Y);
rect.Width = b2.Image.Width;//更改这个矩形的宽来
rect.Height = b2.Image.Height;//更改这个矩形的高
g.FillRectangle(b2, rect);
g.DrawString("100", new Font("宋体", 10), b1, new PointF(pbuton.X + 10, pbuton.Y + 6));*/
g.Dispose();
return bmpOut;
}
/*try
{
Graphics g = Graphics.FromImage(bmpOut);
g.DrawImage(b, new Rectangle(0, 0, iWidth, iHeight), new Rectangle(StartX, StartY, iWidth, iHeight), GraphicsUnit.Pixel);
g.Dispose();
return bmpOut;
}
catch { return null; }*/
}
这是先从内存中载入一张图片，然后动态画到画布上出现图片不完整 图像处理 Bitmap C#
补充：.NET技术 , C#
