Silverlight 引路蜂二维图形库示例:显示位图

最新推荐文章于 2025-11-26 14:44:03 发布

最新推荐文章于 2025-11-26 14:44:03 发布 · 73 阅读

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#php

本文介绍如何使用Graphics2D的drawImage()方法绘制卫星地图。通过组合不同的卫星图片和道路标识，展示了如何加载资源并将其绘制到指定位置。

类Graphics2D同样提供了绘制位图的方法，drawImage(). 下面的例子显示卫星地图。卫星地图有卫星照片和道路名称组合而成，所选的原始图像，可以参见

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

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);
}