ArcGIS for Silverlight API google地图 *** 作

概述1.地图图层 <esri:Map x:Name="mymap" WrapAround="True" SnapToLevels="True" Extent="13026373.9205,4389217.2155,13039428.4582,4395595.7317" > <esri:Map.Layers > <GoogDitu:Googl

1.地图图层  <esri:Map x:name="mymap"  WrapAround="True" SnapTolevels="True" Extent="13026373.9205,4389217.2155,13039428.4582,4395595.7317" >            <esri:Map.Layers >                <GoogDitu:GoogletopographicLayer >                </GoogDitu:GoogletopographicLayer>                <esri:Graphicslayer ID="MyGraphicslayer"/>            </esri:Map.Layers>        </esri:Map>   Extent表示地图的范围大小，数值是墨卡托数

2.Google服务图层using System; using System.Net; using System.windows; using System.windows.Controls; using System.windows.documents; using System.windows.Ink; using System.windows.input; using System.windows.Media; using System.windows.Media.Animation; using System.windows.Shapes; using ESRI.ArcGIS.ClIEnt; using ESRI.ArcGIS.ClIEnt.Geometry;  public class GoogletopographicLayer: TiledMapServiceLayer     {         private const double cornerCoordinate = 20037508.3427892;        private string _baseURL = "m@161000000";         public overrIDe voID Initialize()        {             ESRI.ArcGIS.ClIEnt.Projection.WebMercator mercator = new ESRI.ArcGIS.ClIEnt.Projection.WebMercator();            this.FullExtent = new ESRI.ArcGIS.ClIEnt.Geometry.Envelope(-20037508.3427892,-20037508.3427892,20037508.3427892,20037508.3427892)             {                 SpatialReference = new SpatialReference(102100)             };            //图层的空间坐标系            this.SpatialReference = new SpatialReference(102100);            // 建立切片信息，每个切片大小256*256px，共16级.            this.TileInfo = new TileInfo()            {                Height = 256,WIDth = 256,Origin = new MapPoint(-cornerCoordinate,cornerCoordinate) { SpatialReference = new ESRI.ArcGIS.ClIEnt.Geometry.SpatialReference(102100) },Lods = new Lod[20]            };            //为每级建立方案，每一级是前一级别的一半.            double resolution = cornerCoordinate * 2 / 256;            for (int i = 0; i < TileInfo.Lods.Length; i++)             {               TileInfo.Lods[i] = new Lod() { Resolution = resolution };               resolution /= 2;            }             // 调用初始化函数            base.Initialize();        }         public overrIDe string GetTileUrl(int level,int row,int col)        {            string url = "http://mt" + (col % 4) + ".Google.cn/vt/lyrs=" + _baseURL + "&v=w2.114&hl=zh-CN&gl=cn&" + "x=" + col + "&" + "y=" + row + "&" + "z=" + level + "&s=galil";             if (_baseURL == "s@92")           {                  url = "http://mt" + (col % 4) + ".Google.cn/vt/lyrs=" + _baseURL + "&v=w2.114&hl=zh-CN&gl=cn&" + "x=" + col + "&" + "y=" + row + "&" + "z=" + level + "&s=galil"; //加载Google遥感图            }            if (_baseURL == "t@128")             {                url = "http://mt" + (col % 4) + ".Google.cn/vt/lyrs=" + _baseURL + ",r@169000000&v=w2.114&hl=zh-CN&gl=cn&" + "x=" + col + "&" + "y=" + row + "&" + "z=" + level + "&s=galil";//加载Google地形图             }             if (_baseURL == "m@161000000")            {                 url = "http://mt" + (col % 4) + ".Google.cn/vt/lyrs=" + _baseURL + "&v=w2.114&hl=zh-CN&gl=cn&" + "x=" + col + "&" + "y=" + row + "&" + "z=" + level + "&s=galil"; //加载Google街道图             }            return string.Format(url);            //调用加载初始的Google街道地图            //string baseUrl = "http://mt2.Google.cn/vt/v=w2.116&hl=zh-CN&gl=cn&x={0}&y={1}&z={2}&s=G";            //return string.Format(baseUrl,col,row,level);           //以上显示的Google地图类型，有三种，根据需要，可以修改变量_baseURL的初始值即可。        }     }

3.地图的放大缩小

 mymap.Zoom(1.5)其中数值大于1是放大 mymap.Zoom(0.5)数值小于1是缩小

3.地图的中心点改变mymap.PanTo()这个方法里放的是墨卡托经纬度

4.改变地图点的图标 Symbol = new PictureMarkerSymbol() { Source = new BitmAPImage(new Uri("../Images/pr.png",UriKind.relative)),WIDth = 20,Height = 17 }

5.给地图添加图标  Graphicslayer graphicslayer = mymap.Layers["MyGraphicslayer"] as Graphicslayer;  MyGraphic graphic = new MyGraphic()                        {                            Geometry = mercator.FromGeographic(new MapPoint(Convert.Todouble(item.Longitude),Convert.Todouble(item.Latitude))),Symbol = new PictureMarkerSymbol() { Source = new BitmAPImage(new Uri("../Images/pr.png",Height = 17 },};  graphicslayer.Graphics.Add(graphic);

总结

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