define(['esri/layers/TiledMapServiceLayer',
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'esri/SpatialReference',
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'esri/geometry/Extent',
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'esri/layers/TileInfo',
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'dojo',
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"dojo/_base/lang",
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"dojo/on"
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],
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function (TiledMapServiceLayer,
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SpatialReference,
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Extent,
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TileInfo,
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dojo,
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lang,
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on
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) {
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return dojo.declare("esrichina.TianDiTuLayer", TiledMapServiceLayer, {
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_mercatortype: "geo",//geo|mercator
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url: "",
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_layer: "",
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displayLevels: [],//从0开始
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_levelIndex: null,
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_extentChangeHandler: null,
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constructor: function (mercatortype, url, layer, options) {
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this.mercatortype = mercatortype;
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this.url = url;
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this._layer = layer;
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this._tilematrixSet = "";
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this.format = "tiles",
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lang.mixin(this, options);
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if (this.displayLevels && this.displayLevels.length > 0) {
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this._levelIndex = {};
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for (var i = 0; i < this.displayLevels.length; i++) {
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this._levelIndex[this.displayLevels[i]] = this.displayLevels[i];
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}
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}
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if (mercatortype == "geo") {
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this.spatialReference = new SpatialReference({ wkid: 4326 });
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this.initialExtent = (this.fullExtent = new Extent(-180.0, -90.0, 180.0, 90.0, this.spatialReference));
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if (!this._tilematrixSet)
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this._tilematrixSet = "c";
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this.tileInfo = new TileInfo({
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"rows": 256,
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"cols": 256,
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"dpi": 90.71428571428571,
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"format": "PNG32",
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"compressionQuality": 0,
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"origin": {
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"x": -180,
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"y": 90
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},
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"spatialReference": {
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"wkid": 4326
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},
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"lods": [
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{ "level": 1, "resolution": 0.703125, "scale": 295497593.05875003 },
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{ "level": 2, "resolution": 0.3515625, "scale": 147748796.52937502 },
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{ "level": 3, "resolution": 0.17578125, "scale": 73874398.264687508 },
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{ "level": 4, "resolution": 0.087890625, "scale": 36937199.132343754 },
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{ "level": 5, "resolution": 0.0439453125, "scale": 18468599.566171877 },
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{ "level": 6, "resolution": 0.02197265625, "scale": 9234299.7830859385 },
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{ "level": 7, "resolution": 0.010986328125, "scale": 4617149.8915429693 },
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{ "level": 8, "resolution": 0.0054931640625, "scale": 2308574.9457714846 },
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{ "level": 9, "resolution": 0.00274658203125, "scale": 1154287.4728857423 },
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{ "level": 10, "resolution": 0.001373291015625, "scale": 577143.73644287116 },
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{ "level": 11, "resolution": 0.0006866455078125, "scale": 288571.86822143558 },
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{ "level": 12, "resolution": 0.00034332275390625, "scale": 144285.93411071779 },
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{ "level": 13, "resolution": 0.000171661376953125, "scale": 72142.967055358895 },
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{ "level": 14, "resolution": 8.58306884765625e-005, "scale": 36071.483527679447 },
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{ "level": 15, "resolution": 4.291534423828125e-005, "scale": 18035.741763839724 },
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{ "level": 16, "resolution": 2.1457672119140625e-005, "scale": 9017.8708819198619 },
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{ "level": 17, "resolution": 1.0728836059570313e-005, "scale": 4508.9354409599309 },
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{ "level": 18, "resolution": 5.3644180297851563e-006, "scale": 2254.4677204799655 },
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{ "level": 19, "resolution": 0.000002682209014892578, "scale": 1127.2338602399827 }
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// { "level": 20, "resolution": 0.000001341104507446289, "scale": 563.6169301199914 }
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]
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});
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}
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else {
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this.spatialReference = new SpatialReference({ wkid: 3857 });
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this.fullExtent = this.initialExtent = new esri.geometry.Extent(-20037508.3427892, -20037508.3427892, 20037508.3427892, 20037508.3427892, new esri.SpatialReference({
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wkid: 3857
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}))
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if (!this._tilematrixSet)
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this._tilematrixSet = "w";
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this.tileInfo = new esri.layers.TileInfo({
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"dpi": 96, //必须，否则图错 90.71428571427429
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"rows": 256,
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"cols": 256,
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"compressionQuality": 0,
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"origin": {
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"x": -20037508.3427892,
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"y": 20037508.342787
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},
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"spatialReference": {
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"wkid": 3857
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},
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"lods": [
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{ "level": 1, "resolution": 78271.51696402048, "scale": 2.958293554545656E8 },
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{ "level": 2, "resolution": 39135.75848201024, "scale": 1.479146777272828E8 },
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{ "level": 3, "resolution": 19567.87924100512, "scale": 7.39573388636414E7 },
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{ "level": 4, "resolution": 9783.93962050256, "scale": 3.69786694318207E7 },
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{ "level": 5, "resolution": 4891.96981025128, "scale": 1.848933471591035E7 },
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{ "level": 6, "resolution": 2445.98490512564, "scale": 9244667.357955175 },
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{ "level": 7, "resolution": 1222.99245256282, "scale": 4622333.678977588 },
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{ "level": 8, "resolution": 611.49622628141, "scale": 2311166.839488794 },
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{ "level": 9, "resolution": 305.748113140705, "scale": 1155583.419744397 },
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{ "level": 10, "resolution": 152.8740565703525, "scale": 577791.7098721985 },
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{ "level": 11, "resolution": 76.43702828517625, "scale": 288895.85493609926 },
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{ "level": 12, "resolution": 38.21851414258813, "scale": 144447.92746804963 },
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{ "level": 13, "resolution": 19.109257071294063, "scale": 72223.96373402482 },
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{ "level": 14, "resolution": 9.554628535647032, "scale": 36111.98186701241 },
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{ "level": 15, "resolution": 4.777314267823516, "scale": 18055.990933506204 },
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{ "level": 16, "resolution": 2.388657133911758, "scale": 9027.995466753102 },
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{ "level": 17, "resolution": 1.194328566955879, "scale": 4513.997733376551 },
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{ "level": 18, "resolution": 0.5971642834779395, "scale": 2256.998866688275 },
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{ "level": 19, "resolution": 0.298582738909933, "scale": 1128.49943336487 }
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// { "level": 20, "resolution": 0.1492913694549665, "scale": 564.249716682435 }
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]
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});
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}
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this.loaded = true;
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this.onLoad(this);
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},
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getTileUrl: function (level, row, col) {
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var url =
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this.url + "?SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetTile&FORMAT=" + this.format + "&TILEMATRIXSET=" + this._tilematrixSet
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+ "&STYLE=default&LAYER="
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+ this._layer + "&TILEMATRIX="
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+ (level)
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+ "&TILEROW="
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+ row
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+ "&TILECOL="
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+ col
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+ "&tk="
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+ this.tkey;
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// var url =
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// "http://111.230.237.93:8080/MapTileService/maptile?fetchtype=static&x="
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// + col +"&y="
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// + row + "&z="
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// + level + "&project=sfmap&pic_size=256&pic_type=png8&data_name=360100&data_format=merged-dat&data_type=normal";
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return url;
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},
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setDisplayLevels: function (value) {
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this.displayLevels = value;
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this._levelIndex = {};
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if (!this.displayLevels) {
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this._levelIndex = null;
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return;
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}
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for (var i = 0; i < this.displayLevels.length; i++) {
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this._levelIndex[this.displayLevels[i]] = this.displayLevels[i];
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}
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},
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_setMap: function (a, c, d, b) {
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var map = a;
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//控制显示级别
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this._extentChangeHandler = map.on("extent-change", lang.hitch(this, function (evt) {
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if (evt.levelChange) {
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if (this._levelIndex && !this._levelIndex[evt.lod.level]) {
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this.hide();
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} else {
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this.show();
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}
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}
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}));
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return this.inherited(arguments);
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},
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_unsetMap: function (a, c) {
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this._extentChangeHandler.remove();
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this.inherited(arguments);
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}
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});
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});
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