ASP.NET图象处理详解(3)

   
  
  ×Ðϸ¿´£¬ÎÒÃÇ¿ÉÒÔÕÒµ½¸÷ÖÖͼÏó´¦ÀíЧ¹û¡£ÏÖÔÚ£¬ÎÒÃÇÀ´¿´¿´³ÌÐò´úÂ룺
  
   £¼%@ Page Language="vb" Debug="True" %£¾
   £¼%@ import namespace="system.drawing" %£¾
   £¼%@ import namespace="system.drawing.imaging" %£¾
   £¼%@ import namespace="system.drawing.drawing2d" %£¾
   £¼%
   dim strFilename as string
   dim i as System.Drawing.Image
   strFilename = server.mappath("./chris-fsck.jpg")
  
   i = System.Drawing.Image.FromFile(strFilename)
  
   dim b as New system.drawing.bitmap(i.width, i.height, pixelformat.format24bpprgb)
   dim g as graphics = graphics.fromimage(b)
  
   g.clear(color.blue)
  
   'ÐýתͼƬ
   i.RotateFlip(System.Drawing.RotateFlipType.Rotate90FlipX)
   g.drawimage(i,New point(0,0))
   i.RotateFlip(System.Drawing.RotateFlipType.Rotate270FlipY)
  
   g.RotateTransform(10)
   g.drawimage(i,New point(0,0))
   g.RotateTransform(10)
   g.drawimage(i,New point(20,20))
   g.RotateTransform(10)
   g.drawimage(i,New point(40,40))
   g.RotateTransform(10)
   g.drawimage(i,New point(40,40))
   g.RotateTransform(-40)
   g.RotateTransform(90)
   g.drawimage(i,New rectangle(100,-400,100,50),New rectangle(20,20,i.width-20,i.height-20),GraphicsUnit.Pixel)
   g.RotateTransform(-90)
  
   ' À­ÉìͼƬ
   g.drawimage(i,New rectangle(10,10,50,50),New rectangle(20,20,i.width-20,i.height-20),GraphicsUnit.Pixel)
   g.drawimage(i,New rectangle(50,10,90,50),New rectangle(20,20,i.width-20,i.height-20),GraphicsUnit.Pixel)
   g.drawimage(i,New rectangle(110,10,150,50),New rectangle(20,20,i.width-20,i.height-20),GraphicsUnit.Pixel)
  
  
   'ÇиîͼƬ
   g.drawimage(i,50,100,New rectangle(180,80,60,110),GraphicsUnit.Pixel)
   g.drawimage(i,140,100,New rectangle(180,80,60,110),GraphicsUnit.Pixel)
  
   'ÐýתͼƬ
   i.RotateFlip(System.Drawing.RotateFlipType.Rotate180FlipX)
   g.drawimage(i,230,100,New rectangle(180,110,60,110),GraphicsUnit.Pixel)
  
   response.contenttype="image/jpeg"
  
   b.save(response.outputstream, imageformat.jpeg)
  
   b.dispose()
  
   %£¾
  
  
   ¡¡¡¡ÔÚÒÔÉϵijÌÐòÖУ¬ÎÒÃÇ¿´µ½ÊµÏÖͼÏó´¦ÀíµÄ¸÷ÖÖ¼¼ÇÉ£¬×Ðϸ¹Û²ì£¬ÎÒÃÇ¿ÉÒÔÖªµÀÐýתͼƬÆäʵÊÇÓÃÁËÒ»¸öRotateFlip·½·¨£»¶øÇиîºÍÀ­ÉìͼƬ£¬ÍêÈ«ÊÇͨ¹ýÉèÖÃDrawImageµÄ²»Í¬²ÎÊýÀ´ÊµÏÖ¡£
  
   ¡¡¡¡ËÄ¡¢×ܽá
  
   ¡¡¡¡ASP.NETµÄͼÏó´¦Àí¿ÉÒÔʵÏֵŦÄܺܶ࣬ÎÒÃÇÔÚÕâÀïÆäʵֻÊǼòµ¥µÄ½éÉÜ£¬¸ü¶à¹¦ÄܵÄÓ¦Óã¬ÐèÒªÎÒÃÇÔÚʵ¼ùÖÐÃþË÷¡¢×ܽᡣ