Silverlight 引路蜂二維圖形庫樣本:顯示位元影像

類Graphics2D同樣提供了繪製位元影像的方法，drawImage(). 下面的例子顯示衛星地圖。衛星地圖有衛星照片和道路名稱組合而成，所選的原始映像，可以參見

 

http://www.mapdigit.com/guidebeemap/maptile.php?type=MICROSOFTSATELLITE&x=6&y=4&z=14 maptile_6_4.jpg
http://www.mapdigit.com/guidebeemap/maptile.php?type=GOOGLEHYBRID&x=7&y=4&z=14 maptile_7_4.png
http://www.mapdigit.com/guidebeemap/maptile.php?type=GOOGLEHYBRID&x=6&y=4&z=14 maptile_6_4.png

[csharp]
private void DrawMap() 
{ 
 BitmapImage img = new BitmapImage(); 
 img.CreateOptions = BitmapCreateOptions.None; 
 string path = "/SilverlightGraphics2DDemo;component/map/maptile_6_4.jpg"; 
 Stream s = Application.GetResourceStream(new Uri(path, UriKind.Relative)).Stream; 
 img.SetSource(s); 
 WriteableBitmap writeableBitmap = new WriteableBitmap(img); 
 graphics2D.Clear(Color.White); 
 graphics2D.DrawImage(writeableBitmap.Pixels, 256, 256, 0, 0); 
  
 path = "/SilverlightGraphics2DDemo;component/map/maptile_7_4.jpg"; 
 s = Application.GetResourceStream(new Uri(path, UriKind.Relative)).Stream; 
 img.SetSource(s); 
 writeableBitmap = new WriteableBitmap(img); 
 graphics2D.DrawImage(writeableBitmap.Pixels, 256, 256,256,0); 
  
 path = "/SilverlightGraphics2DDemo;component/map/maptile_6_4.png"; 
 s = Application.GetResourceStream(new Uri(path, UriKind.Relative)).Stream; 
 img.SetSource(s); 
 writeableBitmap = new WriteableBitmap(img); 
 graphics2D.DrawImage(writeableBitmap.Pixels, 256, 256, 0, 0); 
  
 path = "/SilverlightGraphics2DDemo;component/map/maptile_7_4.png"; 
 s = Application.GetResourceStream(new Uri(path, UriKind.Relative)).Stream; 
 img.SetSource(s); 
 writeableBitmap = new WriteableBitmap(img); 
 graphics2D.DrawImage(writeableBitmap.Pixels, 256, 256, 256, 0); 
} 
private void DrawMap()
{
 BitmapImage img = new BitmapImage();
 img.CreateOptions = BitmapCreateOptions.None;
 string path = "/SilverlightGraphics2DDemo;component/map/maptile_6_4.jpg";
 Stream s = Application.GetResourceStream(new Uri(path, UriKind.Relative)).Stream;
 img.SetSource(s);
 WriteableBitmap writeableBitmap = new WriteableBitmap(img);
 graphics2D.Clear(Color.White);
 graphics2D.DrawImage(writeableBitmap.Pixels, 256, 256, 0, 0);
 
 path = "/SilverlightGraphics2DDemo;component/map/maptile_7_4.jpg";
 s = Application.GetResourceStream(new Uri(path, UriKind.Relative)).Stream;
 img.SetSource(s);
 writeableBitmap = new WriteableBitmap(img);
 graphics2D.DrawImage(writeableBitmap.Pixels, 256, 256,256,0);
 
 path = "/SilverlightGraphics2DDemo;component/map/maptile_6_4.png";
 s = Application.GetResourceStream(new Uri(path, UriKind.Relative)).Stream;
 img.SetSource(s);
 writeableBitmap = new WriteableBitmap(img);
 graphics2D.DrawImage(writeableBitmap.Pixels, 256, 256, 0, 0);
 
 path = "/SilverlightGraphics2DDemo;component/map/maptile_7_4.png";
 s = Application.GetResourceStream(new Uri(path, UriKind.Relative)).Stream;
 img.SetSource(s);
 writeableBitmap = new WriteableBitmap(img);
 graphics2D.DrawImage(writeableBitmap.Pixels, 256, 256, 256, 0);
}

作者：mapdigit