ArcGIS Web API 接入天地图瓦片

接入天地图的瓦片完全类似google的瓦片服务，但是空间参考不一致，想叠加其他的数据的话需要注意空间参考的设置，以上三篇博客的目的为简单的技术研究，如果想将这些内容用于商业用途，大家还是要联系厂家啊！

publicclasstianditu :TiledMapServiceLayer

{

    publicstring _mapType =null;

    privatestring[] _hosts =new
string[] { “tile0″,
“tile1″, “tile2″,
“tile3″, “tile4″,
“tile5″, “tile6″,
“tile6″, “tile7″
};

    publicoverridevoid
Initialize()

    {

       this.FullExtent
= new
ESRI.ArcGIS.Client.Geometry.Envelope(180,-90,-180,90);        {

           SpatialReference =newESRI.ArcGIS.Client.Geometry.SpatialReference(4326);

       };

       this.SpatialReference
= new
ESRI.ArcGIS.Client.Geometry.SpatialReference(4326);

       this.TileInfo
= new TileInfo()

       {

           Height = 256,

           Width = 256,

 

           Origin =new
ESRI.ArcGIS.Client.Geometry.MapPoint(-90d,45d)            {

               SpatialReference = new
ESRI.ArcGIS.Client.Geometry.SpatialReference(4326)

           },

           Lods =new
Lod[18]

       };

       double
resolution = 0.3515625;

       for (int i = 0; i <TileInfo.Lods.Length; i++)

       {

           TileInfo.Lods[i] =new Lod() { Resolution = resolution };

           resolution /= 2;

       }

       base.Initialize();

    }

    publicoverridestring
GetTileUrl(int level,int
row, int col)

    {

       int
index = Math.Abs(col % 7);

       string
host = _hosts[index];

       string
url=“”;

       if(_mapType==
“map”)

       {

           if
(level < 10)

           {

               url=string.Format(“http://{0}.tianditu.com/DataServer?T=A0512_EMap&X={1}&Y={2}&L={3}”,
host, col, row, level+1);

           }

           else
if (level < 12)

           {

               url=string.Format(“http://{0}.tianditu.com/DataServer?T=B0627_EMap1112&X={1}&Y={2}&L={3}”,
host, col, row, level+1);

           }

           else

           {

               url=string.Format(“http://{0}.tianditu.com/DataServer?T=siwei0608&X={1}&Y={2}&L={3}”,
host, col, row, level+1);

           }

       }

       if
(_mapType == “Vanno”)

       {

           if
(level < 10)

           {

               url = string.Format(“http://{0}.tianditu.com/DataServer?T=AB0512_Anno&X={1}&Y={2}&L={3}”,
host, col, row, level + 1);

           }

       }

       if
(_mapType == “img”)

       {

           if
(level < 10)

           {

               url = string.Format(“http://{0}.tianditu.com/DataServer?T=sbsm0210&X={1}&Y={2}&L={3}”,
host, col, row, level + 1);

           }

           else
if (level == 10)

           {

               url = string.Format(“http://{0}.tianditu.com/DataServer?T=e11&X={1}&Y={2}&L={3}”,
host, col, row, level + 1);

           }

           else
if (level == 11)

           {

               url = string.Format(“http://{0}.tianditu.com/DataServer?T=e12&X={1}&Y={2}&L={3}”,
host, col, row, level + 1);

           }

           else
if (level == 12)

           {

               url = string.Format(“http://{0}.tianditu.com/DataServer?T=e13&X={1}&Y={2}&L={3}”,
host, col, row, level + 1);

           }

           else
if (level == 13)

           {

               url = string.Format(“http://{0}.tianditu.com/DataServer?T=eastdawnall&X={1}&Y={2}&L={3}”,
host, col, row, level + 1);

           }

           else

           {

               url = string.Format(“http://{0}.tianditu.com/DataServer?T=sbsm1518&X={1}&Y={2}&L={3}”,
host, col, row, level + 1);

           }

       }

       return
url;

    }

}