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/* Copyright© 2000 - 2022 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 proj4 from "proj4";
import { FetchRequest } from '@supermap/iclient-common/util/FetchRequest';
import { ArrayStatistic } from '@supermap/iclient-common/util/ArrayStatistic';
import { ColorsPickerUtil } from '@supermap/iclient-common/util/ColorsPickerUtil';
import { SecurityManager } from '@supermap/iclient-common/security/SecurityManager';
import { Events } from '@supermap/iclient-common/commontypes/Events';
import { Util as CommonUtil} from '@supermap/iclient-common/commontypes/Util';
import {
Util
} from '../core/Util';
import { getFeatureBySQL, queryFeatureBySQL, getFeatureProperties} from './webmap/Util'
import {
StyleUtils
} from '../core/StyleUtils';
import {TileSuperMapRest, Tianditu, BaiduMap} from '../mapping';
import {VectorTileSuperMapRest, Graphic as GraphicSource, MapboxStyles, OverlayGraphic} from '../overlay';
import {DataFlowService} from '../services'
import provincialCenterData from './webmap/config/ProvinceCenter.json';// eslint-disable-line import/extensions
import municipalCenterData from './webmap/config/MunicipalCenter.json';// eslint-disable-line import/extensions
import SampleDataInfo from './webmap/config/SampleDataInfo.json';// eslint-disable-line import/extensions
import GeoJSON from 'ol/format/GeoJSON';
import MVT from 'ol/format/MVT';
import Observable from 'ol/Observable';
import olMap from 'ol/Map';
import View from 'ol/View';
import MouseWheelZoom from 'ol/interaction/MouseWheelZoom';
import * as olProj from 'ol/proj';
import * as olProj4 from 'ol/proj/proj4';
import Units from 'ol/proj/Units';
import * as olLayer from 'ol/layer';
import WMTSCapabilities from 'ol/format/WMTSCapabilities';
import WMSCapabilities from 'ol/format/WMSCapabilities';
import TileGrid from 'ol/tilegrid/TileGrid';
import WMTSTileGrid from 'ol/tilegrid/WMTS';
import * as olGeometry from 'ol/geom';
import Vector from 'ol/source/Vector';
import XYZ from 'ol/source/XYZ';
import WMTS from 'ol/source/WMTS';
import TileWMS from 'ol/source/TileWMS';
import Feature from 'ol/Feature';
import olRenderFeature from 'ol/render/Feature';
import Style from 'ol/style/Style';
import FillStyle from 'ol/style/Fill';
import StrokeStyle from 'ol/style/Stroke';
import Text from 'ol/style/Text';
import Collection from 'ol/Collection';
import {containsCoordinate, getCenter} from "ol/extent";
window.proj4 = proj4;
window.Proj4js = proj4;
//数据转换工具
const transformTools = new GeoJSON();
// 迁徙图最大支持要素数量
const MAX_MIGRATION_ANIMATION_COUNT = 1000;
//不同坐标系单位。计算公式中的值
const metersPerUnit = {
DEGREES: 2 * Math.PI * 6370997 / 360,
DEGREE: 2 * Math.PI * 6370997 / 360,
FEET: 0.3048,
METERS: 1,
METER: 1,
M: 1,
USFEET: 1200 / 3937
};
const dpiConfig = {
default: 96, // 常用dpi
iServerWMTS: 90.7142857142857 // iserver使用的wmts图层dpi
}
/**
* @class WebMap
* @category iPortal/Online Resources Map
* @classdesc 对接 iPortal/Online 地图类
* @param {Object} options - 参数
* @param {string} [options.target='map'] - 地图容器id
* @param {Object | string} [options.webMap] - webMap对象，或者是获取webMap的url地址。存在webMap，优先使用webMap, id的选项则会被忽略
* @param {number} [options.id] - 地图的id
* @param {string} [options.server="https://www.supermapol.com"] - 地图的地址，如果使用传入id，server则会和id拼接成webMap请求地址
* @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。例如为"key"、"token"，或者用户自定义的密钥。用户申请了密钥，此参数必填
* @param {string} [options.credentialValue] - 凭证密钥对应的值，credentialKey和credentialValue必须一起使用
* @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 {Object} [options.serviceProxy] - iportal内置代理信息, 仅矢量瓦片图层上图才会使用
* @param {string} [options.tiandituKey] - 天地图的key
* @param {string} [options.googleMapsAPIKey] - 谷歌底图需要的key
* @param {string} [options.proxy] - 代理地址，当域名不一致，请求会加上代理。避免跨域
* @param {string} [options.tileFormat] - 地图瓦片出图格式，png/webp
* @param {Object} [options.mapSetting] - 地图可选参数
* @param {function} [options.mapSetting.mapClickCallback] - 地图被点击的回调函数
* @param {function} [options.mapSetting.overlays] - 地图的overlays
* @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}
* @usage
*/
export class WebMap extends Observable {
constructor(id, options) {
super();
if (Util.isObject(id)) {
options = id;
this.mapId = options.id;
} else {
this.mapId = id;
}
options = options || {};
this.server = options.server;
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.serviceProxy = options.serviceProxy || null;
this.tiandituKey = options.tiandituKey;
this.googleMapsAPIKey = options.googleMapsAPIKey || '';
this.proxy = options.proxy;
//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.layers = [];
this.events = new Events(this, null, ["updateDataflowFeature"], true);
this.webMap = options.webMap;
this.tileFormat = options.tileFormat && options.tileFormat.toLowerCase();
this.createMap(options.mapSetting);
if (this.webMap) {
// webmap有可能是url地址，有可能是webmap对象
Util.isString(this.webMap) ? this.createWebmap(this.webMap) : this.getMapInfoSuccess(options.webMap);
} else {
if (!this.server) {
this.server = 'https://www.supermapol.com';
}
this.createWebmap();
}
}
/**
* @private
* @function WebMap.prototype._removeBaseLayer
* @description 移除底图
*/
_removeBaseLayer() {
const map = this.map;
const {layer, labelLayer} = this.baseLayer;
// 移除天地图标签图层
labelLayer && map.removeLayer(labelLayer);
// 移除图层
layer && map.removeLayer(layer);
this.baseLayer = null;
}
/**
* @private
* @function WebMap.prototype._removeLayers
* @description 移除叠加图层
*/
_removeLayers() {
const map = this.map;
this.layers.forEach(({layerType, layer, labelLayer, pathLayer, dataflowService}) => {
if (!layer) {
return;
}
if (layerType === 'MIGRATION') {
layer.remove();
return;
}
if (layerType === 'DATAFLOW_POINT_TRACK' || layerType === 'DATAFLOW_HEAT') {
// 移除轨迹图层
pathLayer && map.removeLayer(pathLayer);
// 取消订阅
dataflowService && dataflowService.unSubscribe();
}
// 移除标签图层
labelLayer && map.removeLayer(labelLayer);
// 移除图层
map.removeLayer(layer)
});
this.layers = [];
}
/**
* @private
* @function WebMap.prototype.clear
* @description 清空地图
*/
_clear() {
// 比例尺
this.scales = [];
// 分辨率
this.resolutionArray = [];
// 比例尺-分辨率 {scale: resolution}
this.resolutions = {};
// 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._removeBaseLayer();
this._removeLayers();
}
/**
* @function WebMap.prototype.refresh
* @version 10.1.0
* @description 重新渲染地图
*/
refresh() {
this._clear();
this.createWebmap();
}
/**
* @private
* @function 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 olMap({
interactions: interactions,
overlays: overlays,
controls: controls,
target: this.target
});
mapSetting && this.registerMapEvent({
mapClickCallback: mapSetting.mapClickCallback
});
}
/**
* @private
* @function 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 WebMap.prototype.createWebmap
* @description 创建webmap
* @param {string} webMapUrl - 请求webMap的地址
*/
createWebmap(webMapUrl) {
let mapUrl;
if (webMapUrl) {
mapUrl = webMapUrl;
} else {
let urlArr = this.server.split('');
if (urlArr[urlArr.length - 1] !== '/') {
this.server += '/';
}
mapUrl = this.server + 'web/maps/' + this.mapId + '/map';
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 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) {
that.getMapInfoSuccess(mapInfo);
}).catch(function (error) {
that.errorCallback && that.errorCallback(error, 'getMapFaild', that.map);
});
}
/**
* @private
* @function WebMap.prototype.getMapInfoSuccess
* @description 获取地图的json信息
* @param {Object} mapInfo - webMap对象
*/
async getMapInfoSuccess(mapInfo) {
let that = this;
if (mapInfo.succeed === false) {
that.errorCallback && that.errorCallback(mapInfo.error, 'getMapFaild', that.map);
return;
}
let handleResult = await that.handleCRS(mapInfo.projection, mapInfo.baseLayer.url);
//存储地图的名称以及描述等信息，返回给用户
that.mapParams = {
title: mapInfo.title,
description: mapInfo.description
};
if (handleResult.action === "BrowseMap") {
that.createSpecLayer(mapInfo);
} else if (handleResult.action === "OpenMap") {
that.baseProjection = handleResult.newCrs || mapInfo.projection;
that.webMapVersion = mapInfo.version;
that.baseLayer = mapInfo.baseLayer;
// 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
that.isHaveGraticule = mapInfo.grid && mapInfo.grid.graticule;
if (mapInfo.baseLayer && mapInfo.baseLayer.layerType === 'MAPBOXSTYLE') {
// 添加矢量瓦片服务作为底图
that.addMVTMapLayer(mapInfo, mapInfo.baseLayer, 0).then(() => {
that.createView(mapInfo);
if (!mapInfo.layers || mapInfo.layers.length === 0) {
that.sendMapToUser(0);
} else {
that.addLayers(mapInfo);
}
that.addGraticule(mapInfo);
}).catch(function (error) {
that.errorCallback && that.errorCallback(error, 'getMapFaild', that.map);
});
} else {
await that.addBaseMap(mapInfo);
if (!mapInfo.layers || mapInfo.layers.length === 0) {
that.sendMapToUser(0);
} else {
that.addLayers(mapInfo);
}
that.addGraticule(mapInfo);
}
} else {
// 不支持的坐标系
that.errorCallback && that.errorCallback({type: "Not support CS", errorMsg: `Not support CS: ${mapInfo.projection}`}, 'getMapFaild', that.map);
return;
}
}
/**
* 处理坐标系(底图)
* @private
* @param {string} crs 必传参数，值是webmap2中定义的坐标系，可能是 1、EGSG:xxx 2、WKT string
* @param {string} baseLayerUrl 可选参数，地图的服务地址；用于EPSG：-1 的时候，用于请求iServer提供的wkt
* @return {Object}
*/
async handleCRS(crs, baseLayerUrl) {
let that = this, handleResult = {};
let newCrs = crs, action = "OpenMap";
if (this.isCustomProjection(crs)) {
// 去iServer请求wkt 否则只能预览出图
await FetchRequest.get(that.getRequestUrl(`${baseLayerUrl}/prjCoordSys.wkt`), null, {
withCredentials: that.withCredentials,
withoutFormatSuffix: true
}).then(function (response) {
return response.text();
}).then(async function (result) {
if(result.indexOf("<!doctype html>") === -1) {
that.addProjctionFromWKT(result, crs);
handleResult = {action, newCrs};
} else {
throw 'ERROR';
}
}).catch(function () {
action = "BrowseMap";
handleResult = {action, newCrs}
});
} else {
if (crs.indexOf("EPSG") === 0 && crs.split(":")[1] <= 0) {
// 自定义坐标系 rest map EPSG:-1(自定义坐标系) 支持编辑
// 未知坐标系情况特殊处理，只支持预览 1、rest map EPSG:-1000(没定义坐标系) 2、wms/wmts EPSG:0 （自定义坐标系）
action = "BrowseMap";
} else if (crs === 'EPSG:910111' || crs === 'EPSG:910112') {
// 早期数据存在的自定义坐标系 "EPSG:910111": "GCJ02MERCATOR"， "EPSG:910112": "BDMERCATOR"
newCrs = "EPSG:3857";
} else if (crs === 'EPSG:910101' || crs === 'EPSG:910102') {
// 早期数据存在的自定义坐标系 "EPSG:910101": "GCJ02", "EPSG:910102": "BD",
newCrs = "EPSG:4326";
} else if (crs.indexOf("EPSG") !== 0) {
// wkt
that.addProjctionFromWKT(newCrs);
newCrs = that.getEpsgInfoFromWKT(crs);
}
handleResult = {action, newCrs};
}
return handleResult;
}
/**
* @private
* @function WebMap.prototype.getScales
* @description 根据级别获取每个级别对应的分辨率
* @param {Object} baseLayerInfo - 底图的图层信息
*/
getScales(baseLayerInfo) {
let scales = [], resolutions = {}, res, scale, resolutionArray = [],
coordUnit = baseLayerInfo.coordUnit || olProj.get(baseLayerInfo.projection).getUnits();
if (!coordUnit) {
coordUnit = this.baseProjection == "EPSG:3857" ? "m" : "degree";
}
if (baseLayerInfo.visibleScales && baseLayerInfo.visibleScales.length > 0) {
//底部设置过固定比例尺，则使用设置的
baseLayerInfo.visibleScales.forEach(scale => {
let value = 1 / scale;
res = this.getResFromScale(value, coordUnit);
scale = `1:${value}`;
//多此一举转换，因为toLocalString会自动保留小数点后三位，and当第二位小数是0就会保存小数点后两位。所有为了统一。
resolutions[this.formatScale(scale)] = res;
resolutionArray.push(res);
scales.push(scale);
}, this)
} else if (baseLayerInfo.layerType === 'WMTS') {
baseLayerInfo.scales.forEach(scale => {
res = this.getResFromScale(scale, coordUnit, 90.7);
scale = `1:${scale}`;
//多此一举转换，因为toLocalString会自动保留小数点后三位，and当第二位小数是0就会保存小数点后两位。所有为了统一。
resolutions[this.formatScale(scale)] = res;
resolutionArray.push(res);
scales.push(scale);
}, this)
} else {
let {minZoom = 0, maxZoom = 22} = baseLayerInfo, view = this.map.getView();
for (let i = minZoom; i <= maxZoom; i++) {
res = view.getResolutionForZoom(i);
scale = this.getScaleFromRes(res, coordUnit);
if (scales.indexOf(scale) === -1) {
//不添加重复的比例尺
scales.push(scale);
let attr = scale.replace(/,/g, "");
resolutions[attr] = res;
resolutionArray.push(res);
}
}
}
this.scales = scales;
this.resolutions = resolutions;
this.resolutionArray = resolutionArray;
}
/**
* @private
* @function WebMap.prototype.getResFromScale
* @description 将比例尺转换为分辨率
* @param {number} scale - 比例尺
* @param {string} coordUnit - 比例尺单位
* @param {number} dpi
*/
getResFromScale(scale, coordUnit = "DEGREE", dpi = 96) {
let mpu = metersPerUnit[coordUnit.toUpperCase()];
return scale * .0254 / dpi / mpu;
}
/**
* @private
* @function WebMap.prototype.getScaleFromRes
* @description 将分辨率转换为比例尺
* @param {number} resolution - 分辨率
* @param {string} coordUnit - 比例尺单位
* @param {number} dpi
*/
getScaleFromRes(resolution, coordUnit = "DEGREE", dpi = 96) {
let scale, mpu = metersPerUnit[coordUnit.toUpperCase()];
scale = resolution * dpi * mpu / .0254;
return '1:' + scale;
}
/**
* @private
* @function WebMap.prototype.formatScale
* @description 将有千位符的数字转为普通数字。例如：1,234 => 1234
* @param {number} scale - 比例尺分母
*/
formatScale(scale) {
return scale.replace(/,/g, "");
}
/**
* @private
* @function 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 extent = [mapInfo.extent.leftBottom.x, mapInfo.extent.leftBottom.y, mapInfo.extent.rightTop.x, mapInfo.extent.rightTop.y];
let proj = new olProj.Projection({
extent,
units: 'm',
code: 'EPSG:0'
});
olProj.addProjection(proj);
let options = {
center: mapInfo.center,
level: 0
}
//添加view
me.baseProjection = proj;
let viewOptions = {
center: options.center ? [options.center.x, options.center.y] : [0, 0],
zoom: 0,
projection: proj
}
if (['4', '5'].indexOf(Util.getOlVersion()) < 0) { // 兼容 ol 4，5，6
viewOptions.multiWorld = true;
}
let view = new View(viewOptions);
me.map.setView(view);
if (me.mapParams) {
me.mapParams.extent = extent;
me.mapParams.projection = mapInfo.projection;
}
if (url && url.indexOf("?token=") > -1) {
//兼容iserver地址有token的情况
me.credentialKey = 'token';
me.credentialValue = mapInfo.baseLayer.credential = url.split("?token=")[1];
url = url.split("?token=")[0];
}
let source;
if (baseLayerType === "TILE") {
FetchRequest.get(me.getRequestUrl(`${url}.json`), null, {
withCredentials: this.withCredentials
}).then(function (response) {
return response.json();
}).then(function (result) {
baseLayerInfo.originResult = result;
let serverType = "IPORTAL", credential = baseLayerInfo.credential, keyfix = 'Token', keyParams = baseLayerInfo.url;
if (baseLayerInfo.url.indexOf("www.supermapol.com") > -1 || baseLayerInfo.url.indexOf("itest.supermapol.com") > -1) {
keyfix = 'Key';
keyParams = [keyParams];
serverType = "ONLINE";
}
if (credential) {
SecurityManager[`register${keyfix}`](keyParams, credential);
}
let options = {
serverType,
url,
tileGrid: TileSuperMapRest.optionsFromMapJSON(url, result).tileGrid
}
if (url && !me.isSameDomain(url)) {
options.tileProxy = me.server + 'apps/viewer/getUrlResource.png?url=';
}
source = new TileSuperMapRest(options);
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, true), 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 = dpiConfig.iServerWMTS;
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);
}
view && view.fit(extent);
}
/**
* @private
* @function 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 olLayer.Tile({
source: source,
zIndex: 0
});
this.map.addLayer(layer);
this.sendMapToUser(0);
}
/**
* @private
* @function 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 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 WebMap.prototype.addBaseMap
* @description 添加底图
* @param {string} mapInfo - 请求地图的url
*/
async addBaseMap(mapInfo) {
let {baseLayer} = mapInfo, layerType = baseLayer.layerType;
//底图，使用默认的配置，不用存储的
if (layerType !== 'TILE' && layerType !== 'WMS' && layerType !== 'WMTS') {
this.getInternetMapInfo(baseLayer);
} else if (layerType === 'WMTS') {
// 通过请求完善信息
await this.getWmtsInfo(baseLayer);
} else if (layerType === 'TILE') {
await this.getTileInfo(baseLayer);
} else if(layerType === 'WMS') {
await this.getWmsInfo(baseLayer);
}
baseLayer.projection = mapInfo.projection;
if (!baseLayer.extent) {
baseLayer.extent = [mapInfo.extent.leftBottom.x, mapInfo.extent.leftBottom.y, mapInfo.extent.rightTop.x, mapInfo.extent.rightTop.y];
}
this.createView(mapInfo);
let layer = this.createBaseLayer(baseLayer, 0, null, null, true);
//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
});
this.map.addLayer(layer);
if (this.mapParams) {
this.mapParams.extent = baseLayer.extent;
this.mapParams.projection = mapInfo.projection;
}
if (baseLayer.labelLayerVisible) {
//存在天地图路网
let labelLayer = new olLayer.Tile({
source: this.createTiandituSource(baseLayer.layerType, mapInfo.projection, true),
zIndex: baseLayer.zIndex || 1,
visible: baseLayer.visible
});
this.map.addLayer(labelLayer);
// 挂载带baseLayer上，便于删除
baseLayer.labelLayer = labelLayer;
}
this.limitScale(mapInfo, baseLayer);
}
validScale(scale) {
if (!scale) {
return false;
}
const scaleNum = scale.split(':')[1];
if (!scaleNum) {
return false;
}
const res = 1 / +scaleNum;
if (res === Infinity || res >= 1) {
return false;
}
return true;
}
limitScale(mapInfo, baseLayer) {
if (this.validScale(mapInfo.minScale) && this.validScale(mapInfo.maxScale)) {
let visibleScales, minScale, maxScale;
if (baseLayer.layerType === 'WMTS') {
visibleScales = baseLayer.scales;
minScale = +mapInfo.minScale.split(':')[1];
maxScale = +mapInfo.maxScale.split(':')[1];
} else {
const scales = this.scales.map((scale) => {
return 1 / scale.split(':')[1];
});
if (Array.isArray(baseLayer.visibleScales) && baseLayer.visibleScales.length && baseLayer.visibleScales) {
visibleScales = baseLayer.visibleScales;
} else {
visibleScales = scales;
}
minScale = 1 / +mapInfo.minScale.split(':')[1];
maxScale = 1 / +mapInfo.maxScale.split(':')[1];
}
const minVisibleScale = this.findNearest(visibleScales, minScale);
const maxVisibleScale = this.findNearest(visibleScales, maxScale);
let minZoom = visibleScales.indexOf(minVisibleScale);
let maxZoom = visibleScales.indexOf(maxVisibleScale);
if (minZoom > maxZoom) {
[minZoom, maxZoom] = [maxZoom, minZoom];
}
if (minZoom !== 0 || maxZoom !== visibleScales.length - 1) {
this.map.setView(
new View(
Object.assign({}, this.map.getView().options_, {
maxResolution: undefined,
minResolution: undefined,
minZoom,
maxZoom,
constrainResolution: false
})
)
);
this.map.addInteraction(
new MouseWheelZoom({
constrainResolution: true
})
);
}
}
}
parseNumber(scaleStr) {
return Number(scaleStr.split(":")[1])
}
findNearest(scales, target) {
let resultIndex = 0
let targetScaleD = target;
for (let i = 1, len = scales.length; i < len; i++) {
if (
Math.abs(scales[i] - targetScaleD) <
Math.abs(scales[resultIndex] - targetScaleD)
) {
resultIndex = i
}
}
return scales[resultIndex]
}
/**
* @private
* @function WebMap.prototype.addMVTMapLayer
* @description 添加地图服务mapboxstyle图层
* @param {Object} mapInfo - 地图信息
* @param {Object} layerInfo - mapboxstyle图层信息
*/
addMVTMapLayer(mapInfo, layerInfo, zIndex) {
layerInfo.zIndex = zIndex;
// 获取地图详细信息
return this.getMapboxStyleLayerInfo(mapInfo, layerInfo).then((msLayerInfo) => {
// 创建图层
return this.createMVTLayer(msLayerInfo).then(layer => {
let layerID = Util.newGuid(8);
if (layerInfo.name) {
layer.setProperties({
name: layerInfo.name,
layerID: layerID,
layerType: 'VECTOR_TILE'
});
}
layerInfo.visibleScale && this.setVisibleScales(layer, layerInfo.visibleScale);
//否则没有ID，对不上号
layerInfo.layer = layer;
layerInfo.layerID = layerID;
this.map.addLayer(layer);
});
}).catch(function (error){
throw error;
});
}
/**
* @private
* @function 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;
}
//当前中心点不在extent内,就用extent的中心点 todo
!containsCoordinate(extent, center) && (center = getCenter(extent));
// 计算当前最大分辨率
let baseLayer = options.baseLayer;
let maxResolution;
if ((baseLayer.visibleScales && baseLayer.visibleScales.length > 0) || (baseLayer.scales && baseLayer.scales.length > 0)) {
//底图有固定比例尺，就直接获取。不用view计算
this.getScales(baseLayer);
} else if (options.baseLayer && 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 View({ zoom, center, projection, maxZoom, maxResolution }));
let viewOptions = {};
if (baseLayer.scales && baseLayer.scales.length > 0 && baseLayer.layerType === "WMTS" ||
this.resolutionArray && this.resolutionArray.length > 0) {
viewOptions = { zoom, center, projection, resolutions: this.resolutionArray, maxZoom };
} else if (baseLayer.layerType === "WMTS") {
viewOptions = { zoom, center, projection, maxZoom };
this.getScales(baseLayer);
} else {
viewOptions = { zoom, center, projection, maxResolution, maxZoom };
this.getScales(baseLayer);
}
if (['4', '5'].indexOf(Util.getOlVersion()) < 0) { // 兼容 ol 4，5，6
viewOptions.multiWorld = true;
viewOptions.showFullExtent = true;
viewOptions.enableRotation = false;
viewOptions.constrainResolution = true; //设置此参数，是因为需要显示整数级别。为了可视比例尺中包含当前比例尺
}
this.map.setView(new View(viewOptions));
if (options.visibleExtent) {
const view = this.map.getView();
const resolution = view.getResolutionForExtent(options.visibleExtent, this.map.getSize());
view.setResolution(resolution);
view.setCenter(getCenter(options.visibleExtent));
}
}
/**
* @private
* @function 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} layerInfo - 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(layerInfo, index, isCallBack, scope, isBaseLayer) {
let source, that = this;
if (scope) {
// 解决异步回调
that = scope;
}
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(layerType, layerInfo.projection);
break;
case "BAIDU":
source = this.createBaiduSource();
break;
case 'BING':
source = this.createBingSource(layerInfo, layerInfo.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 olLayer.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 (layerInfo.visible === undefined || layerInfo.visible === null) {
layerInfo.visible = true;
}
layer.setVisible(layerInfo.visible);
layerInfo.opacity && layer.setOpacity(layerInfo.opacity);
//layerInfo没有存储index属性
index && layer.setZIndex(index);
//否则没有ID，对不上号
layerInfo.layer = layer;
layerInfo.layerID = layerID;
let {visibleScale, autoUpdateTime} = layerInfo, minResolution, maxResolution;
if (visibleScale) {
maxResolution = this.resolutions[visibleScale.minScale];
minResolution = this.resolutions[visibleScale.maxScale];
//比例尺和分别率是反比的关系
maxResolution > 1 ? layer.setMaxResolution(Math.ceil(maxResolution)) : layer.setMaxResolution(maxResolution * 1.1);
layer.setMinResolution(minResolution);
}
if (autoUpdateTime && !layerInfo.autoUpdateInterval) {
//自动更新
layerInfo.autoUpdateInterval = setInterval(() => {
that.updateTileToMap(layerInfo, index);
}, autoUpdateTime);
}
if (isCallBack) {
layer.setZIndex(0); // wmts
that.map.addLayer(layer);
}
return layer;
}
/**
* @private
* @function WebMap.prototype.updateTileToMap
* @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} layerInfo - 图层信息
* @param {number} layerIndex - 图层index
*/
updateTileToMap(layerInfo, layerIndex) {
this.map.removeLayer(layerInfo.layer);
this.map.addLayer(this.createBaseLayer(layerInfo, layerIndex));
}
/**
* @private
* @function 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";