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WebMap.js
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3416 lines (3274 loc) · 138 KB
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/* Copyright© 2000 - 2019 SuperMap Software Co.Ltd. All rights reserved.
* This program are made available under the terms of the Apache License, Version 2.0
* which accompanies this distribution and is available at http://www.apache.org/licenses/LICENSE-2.0.html.*/
import ol from 'openlayers';
import proj4 from "proj4";
import {
FetchRequest,
SecurityManager,
ColorsPickerUtil,
ArrayStatistic,
Events,
CommonUtil
} from '@supermap/iclient-common';
import {
Util
} from '../core/Util';
import {
StyleUtils
} from '../core/StyleUtils';
import provincialCenterData from './webmap/config/ProvinceCenter.json';// eslint-disable-line import/extensions
import municipalCenterData from './webmap/config/MunicipalCenter.json';// eslint-disable-line import/extensions
window.proj4 = proj4;
window.Proj4js = proj4;
ol.supermap = ol.supermap || {};
//数据转换工具
const transformTools = new ol.format.GeoJSON();
// 迁徙图最大支持要素数量
const MAX_MIGRATION_ANIMATION_COUNT = 1000;
/**
* @class ol.supermap.WebMap
* @category iPortal/Online
* @classdesc 对接 iPortal/Online 地图类。
* @param {number} id - 地图的id
* @param {Object} options - 参数。
* @param {string} [options.target='map'] - 地图容器id。
* @param {string} [options.server="http://www.supermapol.com"] - 地图的地址。
* @param {function} [options.successCallback] - 成功加载地图后调用的函数。
* @param {function} [options.errorCallback] - 加载地图失败调用的函数。
* @param {string} [options.credentialKey] - 凭证密钥。
* @param {string} [options.credentialValue] - 凭证值。
* @param {boolean} [options.withCredentials=false] - 请求是否携带 cookie。
* @param {boolean} [options.excludePortalProxyUrl] - server传递过来的url是否带有代理
* @param {string} [options.tiandituKey] - 天地图的key
* @param {function} [options.mapSetting.mapClickCallback] - 地图被点击的回调函数
* @param {function} [options.mapSetting.overlays] - 地图的overlayer
* @param {function} [options.mapSetting.controls] - 地图的控件
* @param {function} [options.mapSetting.interactions] - 地图控制的参数
* @extends {ol.Observable}
*/
export class WebMap extends ol.Observable {
constructor(id, options) {
super();
this.mapId = id;
options = options || {};
this.server = options.server || 'http://www.supermapol.com';
this.successCallback = options.successCallback;
this.errorCallback = options.errorCallback;
this.credentialKey = options.credentialKey;
this.credentialValue = options.credentialValue;
this.withCredentials = options.withCredentials || false;
this.target = options.target || "map";
this.excludePortalProxyUrl = options.excludePortalProxyUrl || false;
this.tiandituKey = options.tiandituKey;
//计数叠加图层，处理过的数量（成功和失败都会计数）
this.layerAdded = 0;
this.events = new Events(this, null, ["updateDataflowFeature"], true);
this.createMap(options.mapSetting);
this.createWebmap();
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createMap
* @description 创建地图对象以及注册地图事件
* @param {object} mapSetting - 关于地图的设置以及需要注册的事件
*/
createMap(mapSetting) {
let overlays, controls,interactions;
if (mapSetting) {
interactions = mapSetting.interactions;
overlays = mapSetting.overlays;
controls = mapSetting.controls;
}
this.map = new ol.Map({
interactions: interactions,
overlays: overlays,
controls: controls,
target: this.target
});
mapSetting && this.registerMapEvent({
mapClickCallback: mapSetting.mapClickCallback
});
}
/**
* @private
* @function ol.supermap.WebMap.prototype.registerMapEvent
* @description 注册地图事件
* @param {object} mapSetting - 关于地图的设置以及需要注册的事件
*/
registerMapEvent(mapSetting) {
let map = this.map;
map.on("click", function (evt) {
mapSetting.mapClickCallback && mapSetting.mapClickCallback(evt);
});
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createWebmap
* @description 创建webmap
*/
createWebmap() {
let urlArr = this.server.split('');
if (urlArr[urlArr.length - 1] !== '/') {
this.server += '/';
}
let mapUrl = this.server + 'web/maps/' + this.mapId + '/map';
if (this.credentialValue) {
mapUrl += ('.json?' + this.credentialKey + '=' + this.credentialValue);
}
let filter = 'getUrlResource.json?url=';
if (this.excludePortalProxyUrl && this.server.indexOf(filter) > -1) {
//大屏需求,或者有加上代理的
let urlArray = this.server.split(filter);
if (urlArray.length > 1) {
mapUrl = urlArray[0] + filter + this.server + 'web/maps/' + this.mapId + '/map.json';
}
}
this.getMapInfo(mapUrl);
}
/**
* @private
* @function ol.supermap.WebMap.prototype.getMapInfo
* @description 获取地图的json信息
* @param {string} url - 请求地图的url
*/
getMapInfo(url) {
let that = this,
mapUrl = url;
if (url.indexOf('.json') === -1) {
//传递过来的url,没有包括.json,在这里加上。
mapUrl = `${url}.json`
}
FetchRequest.get(that.getRequestUrl(mapUrl), null, {
withCredentials: this.withCredentials
}).then(function (response) {
return response.json();
}).then(function (mapInfo) {
if (mapInfo.succeed === false) {
that.errorCallback && that.errorCallback(mapInfo.error, 'getMapFaild', that.map);
return;
}
if(mapInfo.projection === 'EPSG:910111' || mapInfo.projection === 'EPSG:910112'){
// 早期数据存在的自定义坐标系 "EPSG:910111": "GCJ02MERCATOR"， "EPSG:910112": "BDMERCATOR"
mapInfo.projection = "EPSG:3857";
}else if(mapInfo.projection === 'EPSG:910101' || mapInfo.projection === 'EPSG:910102'){
// 早期数据存在的自定义坐标系 "EPSG:910101": "GCJ02", "EPSG:910102": "BD",
mapInfo.projection = "EPSG:4326";
}
that.baseProjection = mapInfo.projection;
that.mapParams = {
title: mapInfo.title,
description: mapInfo.description
}; //存储地图的名称以及描述等信息，返回给用户
// 多坐标系支持
if(proj4){
ol.proj.setProj4(proj4);
}
// 目前iServer服务中可能出现的EPSG 0，-1，-1000
if(mapInfo.projection.indexOf("EPSG") === 0 && mapInfo.projection.split(":")[1] <= 0){
//对于这两种地图，只能view，不能叠加其他图层
that.createSpecLayer(mapInfo);
return;
} else if(that.addProjctionFromWKT(mapInfo.projection)){
mapInfo.projection = that.baseProjection = that.getEpsgInfoFromWKT(mapInfo.projection);
}else{
// 不支持的坐标系
that.errorCallback && that.errorCallback({type: "Not support CS", errorMsg: `Not support CS: ${mapInfo.projection}`}, 'getMapFaild', that.map);
return;
}
if (mapInfo.baseLayer && mapInfo.baseLayer.layerType === 'MAPBOXSTYLE') {
// 添加矢量瓦片服务作为底图
that.addMVTBaseMap(mapInfo).then(() => {
if (!mapInfo.layers || mapInfo.layers.length === 0) {
that.sendMapToUser(0);
} else {
that.addLayers(mapInfo);
}
that.createView(mapInfo);
});
} else {
that.addBaseMap(mapInfo);
if (!mapInfo.layers || mapInfo.layers.length === 0) {
that.sendMapToUser(0);
} else {
that.addLayers(mapInfo);
}
that.createView(mapInfo);
}
}).catch(function (error) {
that.errorCallback && that.errorCallback(error, 'getMapFaild', that.map);
});
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createSpecLayer
* @description 创建坐标系为0和-1000的图层
* @param {object} mapInfo - 地图信息
*/
createSpecLayer(mapInfo) {
let me = this,
baseLayerInfo = mapInfo.baseLayer,
url = baseLayerInfo.url,
baseLayerType = baseLayerInfo.layerType;
let proj = new ol.proj.Projection({
extent: [mapInfo.extent.leftBottom.x, mapInfo.extent.leftBottom.y, mapInfo.extent.rightTop.x, mapInfo.extent.rightTop.y],
units: 'm',
code: 'EPSG:0'
});
ol.proj.addProjection(proj);
let options = {
center: mapInfo.center,
level: 0
}
//添加view
me.baseProjection = proj;
me.createView(options);
let source;
if(baseLayerType === "TILE"){
FetchRequest.get(me.getRequestUrl(`${url}.json`), null, {
withCredentials: this.withCredentials
}).then(function (response) {
return response.json();
}).then(function (result) {
baseLayerInfo.originResult = result;
source = new ol.source.TileSuperMapRest({
url: baseLayerInfo.url,
tileGrid: ol.source.TileSuperMapRest.optionsFromMapJSON(baseLayerInfo.url, baseLayerInfo.originResult).tileGrid
});
me.addSpecToMap(source);
}).catch(function(error) {
me.errorCallback && me.errorCallback(error, 'getMapFaild', me.map);
});
} else if(baseLayerType === "WMS"){
source = me.createWMSSource(baseLayerInfo);
me.addSpecToMap(source);
} else if(baseLayerType === "WMTS"){
FetchRequest.get(me.getRequestUrl(url), null, {
withCredentials: this.withCredentials
}).then(function (response) {
return response.text();
}).then(function(capabilitiesText) {
baseLayerInfo.extent = [mapInfo.extent.leftBottom.x, mapInfo.extent.leftBottom.y, mapInfo.extent.rightTop.x, mapInfo.extent.rightTop.y];
baseLayerInfo.scales = me.getWMTSScales(baseLayerInfo.tileMatrixSet, capabilitiesText);
baseLayerInfo.dpi = 90.6;
source = me.createWMTSSource(baseLayerInfo);
me.addSpecToMap(source);
}).catch(function(error) {
me.errorCallback && me.errorCallback(error, 'getMapFaild', me.map);
})
}else{
me.errorCallback && me.errorCallback({type: "Not support CS", errorMsg: `Not support CS: ${baseLayerType}`}, 'getMapFaild', me.map);
}
}
/**
* @private
* @function ol.supermap.WebMap.prototype.addSpecToMap
* @description 将坐标系为0和-1000的图层添加到地图上
* @param {object} mapInfo - 地图信息
*/
addSpecToMap(source) {
let layer = new ol.layer.Tile({
source: source,
zIndex: 0
});
layer && this.map.addLayer(layer);
this.sendMapToUser(0);
}
/**
* @private
* @function ol.supermap.WebMap.prototype.getWMTSScales
* @description 获取wmts的比例尺
* @param {object} identifier - 图层存储的标识信息
* @param {object} capabilitiesText - wmts信息
*/
getWMTSScales(identifier, capabilitiesText) {
const format = new ol.format.WMTSCapabilities();
let capabilities = format.read(capabilitiesText);
let content = capabilities.Contents,
tileMatrixSet = content.TileMatrixSet;
let scales = [];
for (let i = 0; i < tileMatrixSet.length; i++) {
if (tileMatrixSet[i].Identifier === identifier) {
for (let h = 0; h < tileMatrixSet[i].TileMatrix.length; h++) {
scales.push(tileMatrixSet[i].TileMatrix[h].ScaleDenominator)
}
break;
}
}
return scales;
}
/**
* @private
* @function ol.supermap.WebMap.prototype.addBaseMap
* @description 添加底图
* @param {string} mapInfo - 请求地图的url
*/
addBaseMap(mapInfo) {
let layer = this.createBaseLayer(mapInfo, null, false);
// 部分图层是异步的 早期异步没有设计好，所以将就将就吧
if(layer){
this.map.addLayer(layer);
}
if (mapInfo.baseLayer && mapInfo.baseLayer.labelLayerVisible) {
let layerInfo = mapInfo.baseLayer;
//存在天地图路网
let labelLayer = new ol.layer.Tile({
source: this.createTiandituSource(layerInfo, layerInfo.layerType, mapInfo.projection, true),
zIndex: layerInfo.zIndex || 0,
visible: layerInfo.visible
});
this.map.addLayer(labelLayer);
}
}
/**
* @private
* @function ol.supermap.WebMap.prototype.addMVTBaseMap
* @description 添加矢量瓦片服务底图
* @param {object} mapInfo - 地图信息
*/
addMVTBaseMap(mapInfo) {
// 获取地图详细信息
return this.getMBStyle(mapInfo).then(baseLayerInfo => {
// 创建图层
return this.createMVTLayer(baseLayerInfo).then(layer => {
let layerID = Util.newGuid(8);
if (baseLayerInfo.name) {
layer.setProperties({
name: baseLayerInfo.name,
layerID: layerID,
layerType: 'VECTOR_TILE'
});
}
//否则没有ID，对不上号
baseLayerInfo.layer = layer;
baseLayerInfo.layerID = layerID;
this.map.addLayer(layer);
});
});
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createView
* @description 创建地图视图
* @param {object} options - 关于地图的信息
*/
createView(options) {
let oldcenter = options.center,
zoom = options.level !== undefined ? options.level : 1,
maxZoom = options.maxZoom || 22,
extent,
projection = this.baseProjection;
let center = [];
for (let key in oldcenter) {
center.push(oldcenter[key]);
}
if (center.length === 0) {
//兼容wms
center = [0, 0];
}
//与DV一致用底图的默认范围，不用存储的范围。否则会导致地图拖不动
this.baseLayerExtent = extent = options.baseLayer && options.baseLayer.extent;
if(this.mapParams) {
this.mapParams.extent = extent;
this.mapParams.projection = projection;
}
// 计算当前最大分辨率
let maxResolution;
if(options.baseLayer && ['TILE', 'MAPBOXSTYLE'].includes(options.baseLayer.layerType) && extent && extent.length === 4){
let width = extent[2] - extent[0];
let height = extent[3] - extent[1];
let maxResolution1 = width / 512;
let maxResolution2 = height / 512;
maxResolution = Math.max(maxResolution1, maxResolution2);
}
if(options.baseLayer.visibleScales && options.baseLayer.visibleScales.length > 0){
maxZoom = options.baseLayer.visibleScales.length;
}
this.map.setView(new ol.View({zoom, center, projection, extent, maxResolution, maxZoom}));
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createBaseLayer
* @description 创建矢量图层，包括底图及其叠加的矢量图层
* @param {object} mapInfo - 关于地图的信息
* @param {number} index - 当前图层在地图中的index
* @param {boolean} isCallBack - 是否调用回调函数
* @param {scope} {object} this对象
*/
createBaseLayer(mapInfo, index, isCallBack, scope) {
let source, layerInfo, isBaseLayer, that= this;
if(scope){
// 解决异步回调
that = scope;
}
if(mapInfo.baseLayer) {
isBaseLayer = true;
//底图，使用默认的配置，不用存储的
if(mapInfo.baseLayer.layerType !== 'TILE' &&
mapInfo.baseLayer.layerType !== 'WMS' &&
mapInfo.baseLayer.layerType !== 'WMTS'){
this.getInternetMapInfo(mapInfo.baseLayer);
}else if(mapInfo.baseLayer.layerType === 'WMTS' && !isCallBack){
// 通过请求完善信息
this.getWmtsInfo(mapInfo.baseLayer, this.createBaseLayer, mapInfo);
return;
}else if(mapInfo.baseLayer.layerType === 'TILE' && !isCallBack){
this.getTileInfo(mapInfo.baseLayer, this.createBaseLayer, mapInfo);
return;
}else{
mapInfo.baseLayer.projection = mapInfo.projection;
mapInfo.baseLayer.extent = [mapInfo.extent.leftBottom.x, mapInfo.extent.leftBottom.y, mapInfo.extent.rightTop.x, mapInfo.extent.rightTop.y];
}
layerInfo = mapInfo.baseLayer;
// layerInfo = mapInfo.baseLayer = this.getInternetMapInfo(mapInfo.baseLayer);
that.createView(mapInfo);
} else {
layerInfo = mapInfo;
}
let layerType = layerInfo.layerType; //底图和rest地图兼容
if (layerType.indexOf('TIANDITU_VEC') > -1 || layerType.indexOf('TIANDITU_IMG') > -1 ||
layerType.indexOf('TIANDITU_TER') > -1) {
layerType = layerType.substr(0, 12);
}
switch (layerType) {
case "TIANDITU_VEC":
case "TIANDITU_IMG":
case "TIANDITU_TER":
source = this.createTiandituSource(layerInfo, layerType, mapInfo.projection);
break;
case "BAIDU":
source = this.createBaiduSource();
break;
case 'BING':
source = this.createBingSource(layerInfo, mapInfo.projection);
break;
case "WMS":
source = this.createWMSSource(layerInfo);
break;
case "WMTS":
source = that.createWMTSSource(layerInfo);
break;
case 'TILE':
case 'SUPERMAP_REST':
source = that.createDynamicTiledSource(layerInfo, isBaseLayer);
break;
case 'CLOUD':
case 'CLOUD_BLACK':
case 'OSM':
case 'JAPAN_ORT':
case 'JAPAN_RELIEF':
case 'JAPAN_PALE':
case 'JAPAN_STD':
case 'GOOGLE_CN':
case 'GOOGLE':
source = this.createXYZSource(layerInfo);
break;
default:
break;
}
var layer = new ol.layer.Tile({
source: source,
zIndex: layerInfo.zIndex || 1,
visible: layerInfo.visible
});
var layerID = Util.newGuid(8);
if (layerInfo.name) {
layer.setProperties({
name: layerInfo.name,
layerID: layerID
});
}
if (!mapInfo.baseLayer) {
//不是底图
layer.setVisible(layerInfo.visible);
layerInfo.opacity && layer.setOpacity(layerInfo.opacity);
//layerInfo没有存储index属性
index && layer.setZIndex(index);
} else {
//底图增加图层类型，DV分享需要用它来识别版权信息
layer.setProperties({
layerType: layerType
});
}
//否则没有ID，对不上号
layerInfo.layer = layer;
layerInfo.layerID = layerID;
if(isCallBack){
layer.setZIndex(0); // wmts
that.map.addLayer(layer);
}
return layer;
}
/**
* @private
* @function ol.supermap.WebMap.prototype.getInternetMapInfo
* @description 获取底图对应的图层信息，不是用请求回来的底图信息
* @param {object} baseLayerInfo - 底图信息
* @returns {Object} 底图的具体信息
*/
getInternetMapInfo(baseLayerInfo) {
const baiduBounds = [-20037508.3427892, -20037508.3427892, 20037508.3427892, 20037508.3427892];
const bounds_4326 = [-180, -90, 180, 90];
const osmBounds = [-20037508.34, -20037508.34, 20037508.34, 20037508.34];
const japanReliefBounds = [12555667.53929,1281852.98656,17525908.86651,7484870.70596];
const japanOrtBounds = [-19741117.14519,-10003921.36848,19981677.71404,19660983.56089];
baseLayerInfo.units= "m";
switch (baseLayerInfo.layerType){
case( 'BAIDU'):
baseLayerInfo.iServerUrl= 'https://map.baidu.com/';
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 1;
baseLayerInfo.maxZoom= 19;
baseLayerInfo.level= 1;
baseLayerInfo.extent= baiduBounds;
// thumbnail: this.getImagePath('bmap.png') 暂时不用到缩略图
break;
case ('CLOUD'):
baseLayerInfo.url= 'http://t2.supermapcloud.com/FileService/image?map=quanguo&type=web&x={x}&y={y}&z={z}';
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 1;
baseLayerInfo.maxZoom= 18;
baseLayerInfo.level= 1;
baseLayerInfo.extent= baiduBounds;
break;
case ('CLOUD_BLACK'):
baseLayerInfo.url= 'http://t3.supermapcloud.com/MapService/getGdp?x={x}&y={y}&z={z}';
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 1;
baseLayerInfo.maxZoom= 18;
baseLayerInfo.level= 1;
baseLayerInfo.extent= baiduBounds;
break;
case ('tencent'):
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 1;
baseLayerInfo.maxZoom= 18;
baseLayerInfo.level= 1;
baseLayerInfo.extent= baiduBounds;
break;
case ('TIANDITU_VEC_3857'):
case ('TIANDITU_IMG_3857'):
case ('TIANDITU_TER_3857'):
baseLayerInfo.iserverUrl= 'http://map.tianditu.gov.cn/';
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 0;
baseLayerInfo.maxZoom= 19;
baseLayerInfo.level= 1;
baseLayerInfo.extent= baiduBounds;
if(baseLayerInfo.layerType === "TIANDITU_TER_3857"){
baseLayerInfo.maxZoom = 14;
}
break;
case ('TIANDITU_VEC_4326'):
case ('TIANDITU_IMG_4326'):
case ('TIANDITU_TER_4326'):
baseLayerInfo.iserverUrl= 'http://map.tianditu.gov.cn/';
baseLayerInfo.epsgCode= 'EPSG:4326';
baseLayerInfo.minZoom= 0;
baseLayerInfo.maxZoom= 19;
baseLayerInfo.level= 1;
baseLayerInfo.extent= bounds_4326;
if(baseLayerInfo.layerType === "TIANDITU_TER_4326"){
baseLayerInfo.maxZoom = 14;
}
break;
case ('OSM'):
baseLayerInfo.url= 'http://{a-c}.tile.openstreetmap.org/{z}/{x}/{y}.png';
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 1;
baseLayerInfo.maxZoom= 19;
baseLayerInfo.level= 1;
baseLayerInfo.extent= osmBounds;
baseLayerInfo.iserverUrl= 'https://www.openstreetmap.org';
break;
case ('GOOGLE'):
baseLayerInfo.url= 'http://www.google.cn/maps/vt/pb=!1m4!1m3!1i{z}!2i{x}!3i{y}!2m3!1e0!2sm!3i380072576!3m8!2szh-CN!3scn!5e1105!12m4!1e68!2m2!1sset!2sRoadmap!4e0!5m1!1e0';
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 1;
baseLayerInfo.maxZoom= 22;
baseLayerInfo.level= 1;
baseLayerInfo.extent= osmBounds;
baseLayerInfo.iserverUrl= 'http://www.google.cn/maps';
break;
case ('JAPAN_STD'):
baseLayerInfo.url= 'http://cyberjapandata.gsi.go.jp/xyz/std/{z}/{x}/{y}.png';
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 1;
baseLayerInfo.maxZoom= 19;
baseLayerInfo.level= 0;
baseLayerInfo.extent= osmBounds;
break;
case ('JAPAN_PALE'):
baseLayerInfo.url= 'http://cyberjapandata.gsi.go.jp/xyz/pale/{z}/{x}/{y}.png';
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 2;
baseLayerInfo.maxZoom= 19;
baseLayerInfo.level= 2;
baseLayerInfo.extent= osmBounds;
break;
case ('JAPAN_RELIEF'):
baseLayerInfo.url= 'http://cyberjapandata.gsi.go.jp/xyz/relief/{z}/{x}/{y}.png';
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 5;
baseLayerInfo.maxZoom= 14;
baseLayerInfo.level= 5;
baseLayerInfo.extent= japanReliefBounds;
break ;
case ('JAPAN_ORT'):
baseLayerInfo.url= 'http://cyberjapandata.gsi.go.jp/xyz/ort/{z}/{x}/{y}.jpg';
baseLayerInfo.epsgCode= 'EPSG:3857';
baseLayerInfo.minZoom= 2;
baseLayerInfo.maxZoom= 12;
baseLayerInfo.level= 2;
baseLayerInfo.extent= japanOrtBounds;
break;
}
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createDynamicTiledSource
* @description 获取supermap iServer类型的地图的source。
* @param {object} layerInfo
* @param {boolean} isBaseLayer 是否是底图
*/
createDynamicTiledSource(layerInfo, isBaseLayer) {
let serverType = "IPORTAL",
credential = layerInfo.credential,
keyfix = 'Token',
keyParams = layerInfo.url;
if (layerInfo.url.indexOf("www.supermapol.com") > -1 || layerInfo.url.indexOf("itest.supermapol.com") > -1) {
keyfix = 'Key';
keyParams = [keyParams];
serverType = "ONLINE";
}
if (credential) {
SecurityManager[`register${keyfix}`](keyParams, credential);
}
// extent: isBaseLayer ? layerInfo.extent : ol.proj.transformExtent(layerInfo.extent, layerInfo.projection, this.baseProjection),
let options = {
transparent: true,
url: layerInfo.url,
wrapX: false,
serverType: serverType,
// extent: this.baseLayerExtent,
prjCoordSys:{ epsgCode: isBaseLayer ? layerInfo.projection.split(':')[1] : this.baseProjection.split(':')[1] },
tileProxy: this.tileProxy
};
if(layerInfo.visibleScales && layerInfo.visibleScales.length >0){
let result = this.getReslutionsFromScales(layerInfo.visibleScales, 96, layerInfo.coordUnit);
let tileGrid = new ol.tilegrid.TileGrid({
extent: layerInfo.extent,
resolutions: result.res
});
layerInfo.visibleResolutions = result.res;
options.tileGrid = tileGrid;
}else{
options.extent = this.baseLayerExtent;
}
let source = new ol.source.TileSuperMapRest(options);
SecurityManager[`register${keyfix}`](layerInfo.url);
return source;
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createTiandituSource
* @description 创建天地图的source。
* @param layerInfo 图层信息
* @param layerType 图层类型
* @param projection 地理坐标系
* @param isLabel 是否有路网图层
* @returns {ol.source.Tianditu} 天地图的source
*/
createTiandituSource(layerInfo, layerType, projection, isLabel) {
let options = {
layerType: layerType.split('_')[1].toLowerCase(),
isLabel: isLabel || false,
projection: projection,
url: `https://t{0-7}.tianditu.gov.cn/{layer}_{proj}/wmts?tk=${this.tiandituKey}`
};
return new ol.source.Tianditu(options);
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createBaiduSource
* @description 创建百度地图的source。
* @returns {ol.source.BaiduMap} baidu地图的source
*/
createBaiduSource() {
return new ol.source.BaiduMap()
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createBingSource
* @description 创建bing地图的source。
* @returns {ol.source.XYZ} bing地图的source
*/
createBingSource(layerInfo, projection) {
let url = 'http://dynamic.t0.tiles.ditu.live.com/comp/ch/{quadKey}?it=G,TW,L,LA&mkt=zh-cn&og=109&cstl=w4c&ur=CN&n=z';
return new ol.source.XYZ({
wrapX: false,
projection: projection,
tileUrlFunction: function (coordinates) {
let /*quadDigits = '', */[z, x, y] = [...coordinates];
y = y > 0 ? y - 1 : -y - 1;
let index = '';
for (let i = z; i > 0; i--) {
let b = 0;
let mask = 1 << (i - 1);
if ((x & mask) !== 0) {
b++;
}
if ((y & mask) !== 0) {
b += 2;
}
index += b.toString()
}
return url.replace('{quadKey}', index);
}
})
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createXYZSource
* @description 创建图层的XYZsource。
* @param {Object} layerInfo - 图层信息。。
* @returns {ol.source.XYZ} xyz的source
*/
createXYZSource(layerInfo) {
return new ol.source.XYZ({
url: layerInfo.url,
wrapX: false,
crossOrigin: window.location.host
})
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createWMSSource
* @description 创建wms地图source。
* @param {Object} layerInfo - 图层信息。
* @returns {ol.source.TileWMS}
*/
createWMSSource(layerInfo) {
let that = this;
return new ol.source.TileWMS({
url: layerInfo.url,
wrapX: false,
params: {
LAYERS: layerInfo.layers ? layerInfo.layers[0] : "0",
FORMAT: 'image/png'
},
projection: layerInfo.projection || that.baseProjection,
tileLoadFunction: function (imageTile, src) {
imageTile.getImage().src = src
}
})
}
/**
* @private
* @function ol.supermap.WebMap.prototype.getLayerExtent
* @description 获取(Supermap Rest/WMS)的图层参数。
* @param {Object} layerInfo - 图层信息。
* @param {function} callback - 获得wmts图层参数执行的回调函数
*/
getLayerExtent(layerInfo, callback){
let that = this,
url = layerInfo.url.trim();
if(layerInfo.layerType === "TILE"){
// 直接使用动态投影方式请求数据
let projection = {
epsgCode: that.baseProjection.split(":")[1]
}
// bug IE11 不会自动编码
url += '.json?prjCoordSys=' + encodeURI(JSON.stringify(projection));
}else{
url += (url.indexOf('?') > -1 ? '&SERVICE=WMS&REQUEST=GetCapabilities' : '?SERVICE=WMS&REQUEST=GetCapabilities');
}
let options = {
withCredentials: this.withCredentials,
withoutFormatSuffix: true
};
FetchRequest.get(that.getRequestUrl(url), null, options).then(function (response) {
return layerInfo.layerType === "TILE" ? response.json() : response.text();
}).then(function (result) {
if (layerInfo.layerType === "TILE") {
layerInfo.extent = [result.bounds.left, result.bounds.bottom, result.bounds.right, result.bounds.top];
layerInfo.projection = `EPSG:${result.prjCoordSys.epsgCode}`;
callback(layerInfo);
} else {
layerInfo.projection = that.baseProjection;
callback(layerInfo);
}
});
}
/**
* @private
* @function ol.supermap.WebMap.prototype.getTileInfo
* @description 获取rest map的图层参数。
* @param {Object} layerInfo - 图层信息。
* @param {function} callback - 获得wmts图层参数执行的回调函数
*/
getTileInfo(layerInfo, callback, mapInfo){
let that = this;
let options = {
withCredentials: this.withCredentials,
withoutFormatSuffix: true
};
FetchRequest.get(that.getRequestUrl(`${layerInfo.url}.json`), null, options).then(function (response) {
return response.json();
}).then(function (result) {
layerInfo.projection = mapInfo.projection;
layerInfo.extent = [mapInfo.extent.leftBottom.x, mapInfo.extent.leftBottom.y, mapInfo.extent.rightTop.x, mapInfo.extent.rightTop.y];
// 比例尺 单位
if(result.visibleScales){
layerInfo.visibleScales = result.visibleScales;
layerInfo.coordUnit = result.coordUnit;
}
// 请求结果完成 继续添加图层
if(mapInfo){
callback(mapInfo, null, true, that);
}else{
callback(layerInfo);
}
}).catch(function (error) {
that.errorCallback && that.errorCallback(error, 'getWmtsFaild', that.map)
});
}
/**
* @private
* @function ol.supermap.WebMap.prototype.getWmtsInfo
* @description 获取wmts的图层参数。
* @param {Object} layerInfo - 图层信息。
* @param {function} callback - 获得wmts图层参数执行的回调函数
*/
getWmtsInfo(layerInfo, callback, mapInfo) {
let that = this;
let options = {
withCredentials: false,
withoutFormatSuffix: true
};
FetchRequest.get(that.getRequestUrl(layerInfo.url), null, options).then(function (response) {
return response.text();
}).then(function (capabilitiesText) {
const format = new ol.format.WMTSCapabilities();
let capabilities = format.read(capabilitiesText);
if (that.isValidResponse(capabilities)) {
let content = capabilities.Contents,
tileMatrixSet = content.TileMatrixSet,
layers = content.Layer,
layer, relSet = [],
idx;
for (let n = 0; n < layers.length; n++) {
if (layers[n].Title === layerInfo.name) {
idx = n;
layer = layers[idx];
var layerBounds = layer.WGS84BoundingBox;
// tileMatrixSetLink = layer.TileMatrixSetLink;
break;
}
}
let scales = [];
for (let i = 0; i < tileMatrixSet.length; i++) {
if (tileMatrixSet[i].Identifier === layerInfo.tileMatrixSet) {
for (let h = 0; h < tileMatrixSet[i].TileMatrix.length; h++) {
scales.push(tileMatrixSet[i].TileMatrix[h].ScaleDenominator)
}
break;
}
}
let name = layerInfo.name,
extent = ol.proj.transformExtent(layerBounds, 'EPSG:4326', that.baseProjection),
matrixSet = relSet[idx];
//将需要的参数补上
layerInfo.dpi = 90.7;
layerInfo.extent = extent;
layerInfo.format = "image/png";
layerInfo.matrixSet = matrixSet;
layerInfo.name = name;
layerInfo.orginEpsgCode = layerInfo.projection;
layerInfo.overLayer = true;
//只有这种，Dataviz里面不应该选择
layerInfo.requestEncoding = 'KVP';
layerInfo.scales = scales;
layerInfo.style = "default";
layerInfo.title = name;
layerInfo.unit = "m";
layerInfo.zIndex = idx;
if(mapInfo){
callback(mapInfo, null, true, that);
}else{
callback(layerInfo);
}
}
}).catch(function (error) {
that.errorCallback && that.errorCallback(error, 'getWmtsFaild', that.map)
});
}
/**
* @private
* @function ol.supermap.WebMap.prototype.createWMTSSource
* @description 获取WMTS类型图层的source。
* @param {Object} layerInfo - 图层信息。
* @returns {ol.tilegrid}
*/
createWMTSSource(layerInfo) {
let extent = layerInfo.extent || ol.proj.get(layerInfo.projection).getExtent();
// 单位通过坐标系获取 （PS: 以前代码非4326 都默认是米）
let unit = ol.proj.get(this.baseProjection).getUnits();
return new ol.source.WMTS({
url: layerInfo.url,
layer: layerInfo.name,
format: 'image/png',
matrixSet: layerInfo.tileMatrixSet,
requestEncoding: layerInfo.requestEncoding || 'KVP',
tileGrid: this.getWMTSTileGrid(extent, layerInfo.scales, unit, layerInfo.dpi),
tileLoadFunction: function (imageTile, src) {
imageTile.getImage().src = src
}
})
}
/**
* @private
* @function ol.supermap.WebMap.prototype.getWMTSTileGrid
* @description 获取wmts的瓦片。
* @param {Object} extent - 图层范围。
* @param {number} scales - 图层比例尺
* @param {string} unit - 单位
* @param {number} dpi - dpi
* @returns {ol.tilegrid.WMTS}
*/
getWMTSTileGrid(extent, scales, unit, dpi) {
let resolutionsInfo = this.getReslutionsFromScales(scales, dpi || 96, unit);
return new ol.tilegrid.WMTS({
extent: extent,
resolutions: resolutionsInfo.res,
matrixIds: resolutionsInfo.matrixIds
});
}
/**
* @private
* @function ol.supermap.WebMap.prototype.getReslutionsFromScales
* @description 根据比例尺（比例尺分母）、地图单位、dpi、获取一个分辨率数组
* @param {array} scales - 比例尺（比例尺分母）
* @param {number} dpi - 地图dpi
* @param {string} unit - 单位
* @param {number} datumAxis
* @returns {{res: Array, matrixIds: Array}}
*/
getReslutionsFromScales(scales, dpi, unit, datumAxis) {