openlayers加载天地图代码

OpenLayers.Layer.TDTServer = [
"http://tile0.tianditu.com/DataServer?",
"http://tile1.tianditu.com/DataServer?",
"http://tile2.tianditu.com/DataServer?",
"http://tile3.tianditu.com/DataServer?",
"http://tile4.tianditu.com/DataServer?",
"http://tile5.tianditu.com/DataServer?",
"http://tile6.tianditu.com/DataServer?",
"http://tile7.tianditu.com/DataServer?"
];

OpenLayers.Layer.TDTLayer = OpenLayers.Class(OpenLayers.Layer.Grid, {

isBaseLayer: true,

zoomOffset: 2, //0.3515625,

//maxResolution: 0.3515625,
//maxResolution: 360 / 256,

format: 'image/png',

initialize: function(name, url, layername, options) {
this.layername = layername;
OpenLayers.Layer.Grid.prototype.initialize.apply(this, [name, url, {}, options]);
},

clone: function (obj) {
if (obj == null) {
obj = new OpenLayers.Layer.TDTLayer(this.name,
this.url,
this.layername,
this.getOptions());
}
obj = OpenLayers.Layer.Grid.prototype.clone.apply(this, [obj]);
return obj;
},

getLayerName: function(tileZ){
return this.layername;
},

getURL: function(bounds) {
var res = this.map.getResolution();

var tileX = Math.round((bounds.left - this.maxExtent.left)
/ (res * this.tileSize.w));
var tileY = Math.round((this.maxExtent.top - bounds.top)
/ (res * this.tileSize.h));
var tileZ = this.map.getZoom() + this.zoomOffset;

var path = OpenLayers.String.format("T=${T}&X=${X}&Y=${Y}&L=${L}", {'T': this.getLayerName(tileZ),'X': tileX, 'Y': tileY, 'L': tileZ});
var url = this.url;
if (url instanceof Array) {
url = this.selectUrl(path, url);
}
return url + path;
},

addTile:function(bounds, position) {
var url = this.getURL(bounds);
return new OpenLayers.Tile.Image(this, position, bounds,
url, this.tileSize);
},

CLASS_NAME: "OpenLayers.Layer.TDTLayer"
});

function calcResolutions (lvstart, lvend){
var maxResolution = 360 / 256;
var res = new Array();
for(var i=lvstart;  i<=lvend; i++){
res.push( maxResolution / Math.pow( 2, i));
}
return res;
};
/*
天地图全球遥感数据
*/
OpenLayers.Layer.TDTRSLayer = OpenLayers.Class(OpenLayers.Layer.TDTLayer, {
labelLayer: null,

initialize: function(name, options) {
//      var levels = 18 || options.levels;
options = OpenLayers.Util.extend({
projection: "EPSG:4326"
//          resolutions: calcResolutions(2, levels)
}, options);

OpenLayers.Layer.TDTLayer.prototype.initialize.apply(this, [name, OpenLayers.Layer.TDTServer, null, options]);
},

setVisibility: function(visible){
OpenLayers.Layer.TDTLayer.prototype.setVisibility.apply(this, [visible]);
if(this.showLabel){
this.showLabelLayer(visible);
}
},

showLabelLayer: function(visible){
if(!this.labelLayer && this.map){
this.labelLayer= new OpenLayers.Layer.TDTRSDMLayer("Label",{
isBaseLayer : false,
singleTile : false ,
displayInLayerSwitcher: false
});
this.map.addLayer(this.labelLayer);
}
this.labelLayer.setVisibility(visible
4000
);
},

getLayerName: function(tileZ){

if(tileZ >= 0 && tileZ <= 10){
return "sbsm0210";//http://tile0.tianditu.com/services/sbsm0210/GetCapabilities
} else  if(tileZ >= 11 && tileZ <= 13){
return "e" + tileZ;
//http://tile0.tianditu.com/services/e11/GetCapabilities
//http://tile0.tianditu.com/services/e12/GetCapabilities
//http://tile0.tianditu.com/services/e12/GetCapabilities
} else  if(tileZ == 14){
return "eastdawnall";
//http://tile0.tianditu.com/services/eastdawnall/GetCapabilities
} else  if(tileZ >= 15 && tileZ <= 18){
return "sbsm1518";
//http://tile0.tianditu.com/services/sbsm1518/GetCapabilities
//return "AP0115_SWHK";
//http://tile0.tianditu.com/services/AP0115_SWHK/GetCapabilities
}

return this.layername;
},

clone: function (obj) {
if (obj == null) {
obj = new OpenLayers.Layer.TDTRSLayer(this.name, this.getOptions());
}
obj = OpenLayers.Layer.TDTLayer.prototype.clone.apply(this, [obj]);
return obj;
},

CLASS_NAME: "OpenLayers.Layer.TDTRSLayer"
});

/*
天地图影像地名数据
*/
OpenLayers.Layer.TDTRSDMLayer = OpenLayers.Class(OpenLayers.Layer.TDTLayer, {
initialize: function(name, options) {
//var levels = 18 || options.levels;
options = OpenLayers.Util.extend({
projection: "EPSG:4326"
//resolutions: calcResolutions(2, levels)
}, options);
OpenLayers.Layer.TDTLayer.prototype.initialize.apply(this, [name, OpenLayers.Layer.TDTServer, null, options]);
},

getLayerName: function(tileZ){

//1-10
//http://tile0.tianditu.com/services/AB0512_Anno/GetCapabilities //中文地名注记
//1-10
//http://tile0.tianditu.com/services/AB0106_AnnoE/GetCapabilities //英文地名注记
if(tileZ >= 1 && tileZ <= 10){
return "A0610_ImgAnno";
//1-10
//http://tile0.tianditu.com/services/A0610_ImgAnno/GetCapabilities //中文地名注记
//1-10
//http://tile0.tianditu.com/services/A0104_ImgAnnoE/GetCapabilities //英文地名注记
} else    if(tileZ >= 11 && tileZ <= 14){
return "B0530_eImgAnno";
} else    if(tileZ >= 15 && tileZ <= 18){
return "siweiAnno68";
}
//11-14
//http://tile0.tianditu.com/services/B0530_eImgAnno/GetCapabilities
//15-18
//http://tile0.tianditu.com/services/siweiAnno68/GetCapabilities

return this.layername;
},

clone: function (obj) {
if (obj == null) {
obj = new OpenLayers.Layer.TDTRSDMLayer(this.name, this.getOptions());
}
obj = OpenLayers.Layer.TDTLayer.prototype.clone.apply(this, [obj]);
return obj;
},

CLASS_NAME: "OpenLayers.Layer.TDTRSDMLayer"
});

/*
天地图区划地名数据
*/
OpenLayers.Layer.TDTQHDMLayer = OpenLayers.Class(OpenLayers.Layer.TDTLayer, {
initialize: function(name, options) {
//var levels = 10 || options.levels;
options = OpenLayers.Util.extend({
projection: "EPSG:4326"
//          resolutions: calcResolutions(2, levels)
}, options);
OpenLayers.Layer.TDTLayer.prototype.initialize.apply(this, [name, OpenLayers.Layer.TDTServer, null, options]);
},

getLayerName: function(tileZ){

//1-10
//http://tile0.tianditu.com/services/AB0512_Anno/GetCapabilities //中文地名注记
//1-10
//http://tile0.tianditu.com/services/AB0106_AnnoE/GetCapabilities //英文地名注记
if(tileZ >= 1 && tileZ <= 10){
return "A0610_ImgAnno";
//1-10
//http://tile0.tianditu.com/services/A0610_ImgAnno/GetCapabilities //中文地名注记
//1-10
//http://tile0.tianditu.com/services/A0104_ImgAnnoE/GetCapabilities //英文地名注记
}/* else  if(tileZ >= 11 && tileZ <= 14){
return "B0530_eImgAnno";
} else    if(tileZ >= 15 && tileZ <= 18){
return "siweiAnno68";
}   */
//11-14
//http://tile0.tianditu.com/services/B0530_eImgAnno/GetCapabilities
//15-18
//http://tile0.tianditu.com/services/siweiAnno68/GetCapabilities

return this.layername;
},

clone: function (obj) {
if (obj == null) {
obj = new OpenLayers.Layer.TDTDMLayer(this.name, this.getOptions());
}
obj = OpenLayers.Layer.TDTLayer.prototype.clone.apply(this, [obj]);
return obj;
},

CLASS_NAME: "OpenLayers.Layer.TDTQHDMLayer"
});

/*
天地图全球区划数据
*/
OpenLayers.Layer.TDTQHLayer = OpenLayers.Class(OpenLayers.Layer.TDTLayer, {
labelLayer: null,

initialize: function(name, options) {
//      var levels = 18 || options.levels;
options = OpenLayers.Util.extend({
projection: "EPSG:4326"
//          resolutions: calcResolutions(2, levels)
}, options);
OpenLayers.Layer.TDTLayer.prototype.initialize.apply(this, [name, OpenLayers.Layer.TDTServer, null, options]);
},

setVisibility: function(visible){
OpenLayers.Layer.TDTLayer.prototype.setVisibility.apply(this, [visible]);
if(this.showLabel){
this.showLabelLayer(visible);
}
},

showLabelLayer: function(visible){
if(!this.labelLayer && this.map){
this.labelLayer= new OpenLayers.Layer.TDTQHDMLayer("Label",{
isBaseLayer : false,
singleTile : false ,
displayInLayerSwitcher: false
});
this.map.addLayer(this.labelLayer);
}
this.labelLayer.setVisibility(visible);
},

getLayerName: function(tileZ){

if(tileZ >= 1 && tileZ <= 10){
return "A0512_EMap";
} else  if(tileZ >= 11 && tileZ <= 12){
return "B0627_EMap1112";
} else  if(tileZ >= 13 && tileZ <= 18){
return "siwei0608";
}

//1-10
//http://tile0.tianditu.com/services/A0512_EMap/GetCapabilities
//11-12
//http://tile0.tianditu.com/services/B0627_EMap1112/GetCapabilities
//13-18
//http://tile0.tianditu.com/services/siwei0608/GetCapabilities

return this.layername;
},

clone: function (obj) {
if (obj == null) {
obj = new OpenLayers.Layer.TDTQHLayer(this.name, this.getOptions());
}
obj = OpenLayers.Layer.TDTLayer.prototype.clone.apply(this, [obj]);
return obj;
},

CLASS_NAME: "OpenLayers.Layer.TDTQHLayer"
});

map = new OpenLayers.Map(mapdiv, mapOptions);
map.tlayer = new OpenLayers.Layer.TDTLayer("影像图",
"http://t5.tianditu.com/DataServer?" ,'vec_c', {
topLevel: 1,
bottomLevel: 18,
//maxExtent: (new OpenLayers.Bounds(-180, -90, 180, 90)).transform(new OpenLayers.Projection("EPSG:4326"),map.getProjectionObject()),
mirrorUrls:["http://t0.tianditu.com/DataServer","http://t1.tianditu.com/DataServer","http://t2.tianditu.com/DataServer","http://t3.tianditu.com/DataServer","http://t4.tianditu.com/DataServer","http://t5.tianditu.com/DataServer","http://t6.tianditu.com/DataServer","http://t7.tianditu.com/DataServer"],
isBaseLayer : true,
});

map.addLayer(map.tlayer);