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| define(['esri/layers/TiledMapServiceLayer',
| 'esri/SpatialReference',
| 'esri/geometry/Extent',
| 'esri/layers/TileInfo',
| 'dojo',
| "dojo/_base/lang",
| "dojo/on"
| ],
| function(TiledMapServiceLayer,
| SpatialReference,
| Extent,
| TileInfo,
| dojo,
| lang,
| on
| ){
|
| return dojo.declare("TianDiTuLayer", TiledMapServiceLayer, {
| _mercatortype:"geo",//geo|mercator
| url:"",
| _layer:"",
| displayLevels:[],//从0开始
| _levelIndex:null,
| _extentChangeHandler:null,
| constructor: function(mercatortype,url,layer,options) {
| this.mercatortype = mercatortype;
| this.url = url;
| this._layer = layer;
| this._tilematrixSet="";
| this.format="tiles",
| lang.mixin(this, options);
| if(this.displayLevels && this.displayLevels.length>0){
| this._levelIndex={};
| for(var i=0;i<this.displayLevels.length;i++){
| this._levelIndex[this.displayLevels[i]]=this.displayLevels[i];
| }
| }
| if(mercatortype == "geo")
| {
| this.spatialReference = new SpatialReference({ wkid:4326 });
| this.initialExtent = (this.fullExtent = new Extent(-180.0, -90.0, 180.0, 90.0, this.spatialReference));
| if(!this._tilematrixSet)
| this._tilematrixSet = "c";
| this.tileInfo = new TileInfo({
| "rows" : 256,
| "cols" : 256,
| "dpi" : 90.71428571428571,
| "format" : "PNG32",
| "compressionQuality" : 0,
| "origin" : {
| "x" : -180,
| "y" : 90
| },
| "spatialReference" : {
| "wkid" : 4326
| },
| "lods" : [
| {"level" : 1, "resolution" : 0.703125, "scale" : 295497593.05875003},
| {"level" : 2, "resolution" : 0.3515625, "scale" : 147748796.52937502},
| {"level" : 3, "resolution" : 0.17578125, "scale" : 73874398.264687508},
| {"level" : 4, "resolution" : 0.087890625, "scale" : 36937199.132343754},
| {"level" : 5, "resolution" : 0.0439453125, "scale" : 18468599.566171877},
| {"level" : 6, "resolution" : 0.02197265625, "scale" : 9234299.7830859385},
| {"level" : 7, "resolution" : 0.010986328125, "scale" : 4617149.8915429693},
| {"level" : 8, "resolution" : 0.0054931640625, "scale" : 2308574.9457714846},
| {"level" : 9, "resolution" : 0.00274658203125, "scale" : 1154287.4728857423},
| {"level" : 10, "resolution" : 0.001373291015625, "scale" : 577143.73644287116},
| {"level" : 11, "resolution" : 0.0006866455078125, "scale" : 288571.86822143558},
| {"level" : 12, "resolution" : 0.00034332275390625, "scale" : 144285.93411071779},
| {"level" : 13, "resolution" : 0.000171661376953125, "scale" : 72142.967055358895},
| {"level" : 14, "resolution" : 8.58306884765625e-005, "scale" : 36071.483527679447},
| {"level" : 15, "resolution" : 4.291534423828125e-005, "scale" : 18035.741763839724},
| {"level" : 16, "resolution" : 2.1457672119140625e-005, "scale" : 9017.8708819198619},
| {"level" : 17, "resolution" : 1.0728836059570313e-005, "scale" : 4508.9354409599309},
| {"level" : 18, "resolution" : 5.3644180297851563e-006, "scale" : 2254.4677204799655},
| {"level" : 19, "resolution" : 0.000002682209014892578, "scale":1127.2338602399827}
| // {"level" : 20, "resolution" : 0.000001341104507446289, "scale":563.6169301199914}
| ]
| });
| }
| else
| {
| this.spatialReference = new SpatialReference({ wkid:3857 });
| this.fullExtent = this.initialExtent = new esri.geometry.Extent(-20037508.3427892,-20037508.3427892,20037508.3427892,20037508.3427892, new esri.SpatialReference({
| wkid: 3857
| }))
| if(!this._tilematrixSet)
| this._tilematrixSet = "w";
| this.tileInfo = new esri.layers.TileInfo({
| "dpi": 96, //必须，否则图错 90.71428571427429
| "rows" : 256,
| "cols" : 256,
| "compressionQuality" : 0,
| "origin" : {
| "x" : -20037508.3427892,
| "y" : 20037508.342787
| },
| "spatialReference" : {
| "wkid" : 3857
| },
| "lods" : [
| {"level" : 1, "resolution" : 78271.51696402048, "scale" : 2.958293554545656E8},
| {"level" : 2, "resolution" : 39135.75848201024, "scale" : 1.479146777272828E8},
| {"level" : 3, "resolution" : 19567.87924100512, "scale" : 7.39573388636414E7},
| {"level" : 4, "resolution" : 9783.93962050256, "scale" : 3.69786694318207E7},
| {"level" : 5, "resolution" : 4891.96981025128, "scale" : 1.848933471591035E7},
| {"level" : 6, "resolution" : 2445.98490512564, "scale" : 9244667.357955175},
| {"level" : 7, "resolution" : 1222.99245256282, "scale" : 4622333.678977588},
| {"level" : 8, "resolution" : 611.49622628141, "scale" : 2311166.839488794},
| {"level" : 9, "resolution" : 305.748113140705, "scale" : 1155583.419744397},
| {"level" : 10, "resolution" : 152.8740565703525, "scale" : 577791.7098721985},
| {"level" : 11, "resolution" : 76.43702828517625, "scale" : 288895.85493609926},
| {"level" : 12, "resolution" : 38.21851414258813, "scale" : 144447.92746804963},
| {"level" : 13, "resolution" : 19.109257071294063, "scale" : 72223.96373402482},
| {"level" : 14, "resolution" : 9.554628535647032, "scale" : 36111.98186701241},
| {"level" : 15, "resolution" : 4.777314267823516, "scale" : 18055.990933506204},
| {"level" : 16, "resolution" : 2.388657133911758, "scale" : 9027.995466753102},
| {"level" : 17, "resolution" :1.194328566955879, "scale" : 4513.997733376551},
| {"level" : 18, "resolution" :0.5971642834779395, "scale" : 2256.998866688275},
| {"level" : 19, "resolution" : 0.298582738909933, "scale": 1128.49943336487}
| // {"level" : 20, "resolution" : 0.1492913694549665, "scale": 564.249716682435}
| ]});
| }
|
| this.loaded = true;
| this.onLoad(this);
| },
|
| getTileUrl: function(level, row, col) {
| var url=
| this.url+"?SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetTile&FORMAT="+this.format+"&TILEMATRIXSET="+this._tilematrixSet
| +"&STYLE=default&LAYER="
| +this._layer+"&TILEMATRIX="
| +(level)
| +"&TILEROW="
| +row
| +"&TILECOL="
| +col;
|
| return url;
|
| },
| setDisplayLevels:function(value)
| {
| this.displayLevels=value;
| this._levelIndex={};
| if(!this.displayLevels){
| this._levelIndex=null;
| return;
| }
| for(var i=0;i<this.displayLevels.length;i++){
| this._levelIndex[this.displayLevels[i]]=this.displayLevels[i];
| }
| },
| _setMap: function(a, c, d, b) {
| var map=a;
| //控制显示级别
| this._extentChangeHandler = map.on("extent-change",lang.hitch(this,function(evt){
| if(evt.levelChange){
| if(this._levelIndex && !this._levelIndex[evt.lod.level])
| {
| this.hide();
| }else
| {
| this.show();
| }
| }
| }));
| return this.inherited(arguments);
| },
| _unsetMap: function(a, c) {
| this._extentChangeHandler.remove();
| this.inherited(arguments);
| }
| });
| });
|
|
