676 lines
27 KiB
JavaScript
676 lines
27 KiB
JavaScript
// 地图相关功能
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const WeatherMap = {
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map: null,
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stations: [],
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stationLayer: null,
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clusterLayer: null,
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clusterSource: null,
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singleStationLayer: null,
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combinedChart: null,
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CLUSTER_THRESHOLD: 10,
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isMapCollapsed: false,
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// 初始化地图
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init(tiandituKey) {
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this.initializeLayers();
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this.initializeMap(tiandituKey);
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this.setupEventListeners();
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this.setupTileControls();
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// 默认不显示（需用户选择），但准备好默认索引
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this.tileZ = 7; this.tileY = 40; this.tileX = 102;
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this.tileProduct = 'none';
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},
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// 初始化图层
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initializeLayers() {
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this.stationLayer = new ol.layer.Vector({
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source: new ol.source.Vector()
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});
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this.clusterSource = new ol.source.Cluster({
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distance: 60,
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minDistance: 20,
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source: this.stationLayer.getSource(),
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geometryFunction: function(feature) {
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return feature.getGeometry();
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}
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});
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this.clusterLayer = new ol.layer.Vector({
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source: this.clusterSource,
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style: (feature) => this.createClusterStyle(feature)
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});
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this.singleStationLayer = new ol.layer.Vector({
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source: this.stationLayer.getSource(),
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style: (feature) => this.createStationStyle(feature),
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visible: false
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});
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},
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// 初始化地图
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initializeMap(tiandituKey) {
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const layers = this.createMapLayers(tiandituKey);
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this.layers = layers;
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this.map = new ol.Map({
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target: 'map',
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layers: [
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layers.satellite,
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layers.vector,
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layers.terrain,
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layers.hybrid,
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// 栅格瓦片叠加层（动态）
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this.createTileOverlayLayer(),
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this.clusterLayer,
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this.singleStationLayer
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],
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view: new ol.View({
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center: ol.proj.fromLonLat([108, 35]),
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zoom: 5,
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minZoom: 3,
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maxZoom: 18
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})
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});
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// 初始化时设置图层状态
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const initialZoom = this.map.getView().getZoom();
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this.updateClusterDistance(initialZoom);
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this.updateLayerVisibility(initialZoom);
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},
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createTileOverlayLayer(){
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const layer = new ol.layer.Image({
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visible: true,
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opacity: 0.8,
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source: null,
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zIndex: 999
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});
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this.tileOverlayLayer = layer;
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return layer;
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},
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// 创建地图图层
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createMapLayers(tiandituKey) {
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return {
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satellite: new ol.layer.Group({
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layers: [
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new ol.layer.Tile({
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source: new ol.source.XYZ({
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url: `https://t{0-7}.tianditu.gov.cn/img_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=img&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILEMATRIX={z}&TILEROW={y}&TILECOL={x}&tk=${tiandituKey}`
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})
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}),
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new ol.layer.Tile({
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source: new ol.source.XYZ({
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url: `https://t{0-7}.tianditu.gov.cn/cia_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=cia&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILEMATRIX={z}&TILEROW={y}&TILECOL={x}&tk=${tiandituKey}`
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})
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})
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]
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}),
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vector: new ol.layer.Group({
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layers: [
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new ol.layer.Tile({
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source: new ol.source.XYZ({
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url: `https://t{0-7}.tianditu.gov.cn/vec_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=vec&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILEMATRIX={z}&TILEROW={y}&TILECOL={x}&tk=${tiandituKey}`
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})
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}),
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new ol.layer.Tile({
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source: new ol.source.XYZ({
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url: `https://t{0-7}.tianditu.gov.cn/cva_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=cva&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILEMATRIX={z}&TILEROW={y}&TILECOL={x}&tk=${tiandituKey}`
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})
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})
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],
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visible: false
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}),
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terrain: new ol.layer.Group({
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layers: [
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new ol.layer.Tile({
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source: new ol.source.XYZ({
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url: `https://t{0-7}.tianditu.gov.cn/ter_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=ter&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILEMATRIX={z}&TILEROW={y}&TILECOL={x}&tk=${tiandituKey}`
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})
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}),
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new ol.layer.Tile({
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source: new ol.source.XYZ({
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url: `https://t{0-7}.tianditu.gov.cn/cta_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=cta&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILEMATRIX={z}&TILEROW={y}&TILECOL={x}&tk=${tiandituKey}`
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})
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})
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],
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visible: false
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}),
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hybrid: new ol.layer.Group({
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layers: [
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new ol.layer.Tile({
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source: new ol.source.XYZ({
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url: `https://t{0-7}.tianditu.gov.cn/img_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=img&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILEMATRIX={z}&TILEROW={y}&TILECOL={x}&tk=${tiandituKey}`
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})
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}),
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new ol.layer.Tile({
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source: new ol.source.XYZ({
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url: `https://t{0-7}.tianditu.gov.cn/cia_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=cia&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILEMATRIX={z}&TILEROW={y}&TILECOL={x}&tk=${tiandituKey}`
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})
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})
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],
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visible: false
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})
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};
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},
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// ---- 瓦片联动：控件与渲染 ----
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setupTileControls(){
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const prodSel = document.getElementById('tileProduct');
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const timeSel = document.getElementById('tileTimeSelect');
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const prevBtn = document.getElementById('btnTilePrev');
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const nextBtn = document.getElementById('btnTileNext');
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if (!prodSel || !timeSel || !prevBtn || !nextBtn) return;
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prodSel.addEventListener('change', async ()=>{
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this.tileProduct = prodSel.value;
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// 切换产品：none 则隐藏图层
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if (this.tileProduct === 'none') {
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this.tileTimes = [];
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this.tileCurrentIdx = -1;
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if (this.tileOverlayLayer) this.tileOverlayLayer.setSource(null);
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this.updateTileCountInfo();
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return;
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}
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await this.reloadTileTimesAndShow();
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});
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const sEl = document.getElementById('startDate');
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const eEl = document.getElementById('endDate');
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const onRangeChange = async ()=>{
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if (this.tileProduct && this.tileProduct !== 'none') {
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await this.reloadTileTimesAndShow();
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}
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};
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if (sEl) sEl.addEventListener('change', onRangeChange);
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if (eEl) eEl.addEventListener('change', onRangeChange);
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timeSel.addEventListener('change', async ()=>{
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const dt = timeSel.value;
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if (!dt) return;
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const idx = (this.tileTimes||[]).indexOf(dt);
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if (idx >= 0) this.tileCurrentIdx = idx;
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await this.loadAndRenderTile(dt);
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this.updateTileCountInfo();
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});
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prevBtn.addEventListener('click', async ()=>{
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if (!this.tileTimes || this.tileTimes.length === 0) return;
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// times 为倒序：上一时次=更老 => idx+1
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if (this.tileCurrentIdx < this.tileTimes.length - 1) {
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this.tileCurrentIdx += 1;
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const dt = this.tileTimes[this.tileCurrentIdx];
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timeSel.value = dt;
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await this.loadAndRenderTile(dt);
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this.updateTileCountInfo();
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}
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});
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nextBtn.addEventListener('click', async ()=>{
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if (!this.tileTimes || this.tileTimes.length === 0) return;
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if (this.tileCurrentIdx > 0) {
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this.tileCurrentIdx -= 1;
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const dt = this.tileTimes[this.tileCurrentIdx];
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timeSel.value = dt;
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await this.loadAndRenderTile(dt);
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this.updateTileCountInfo();
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}
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});
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},
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async reloadTileTimesAndShow(){
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try{
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const times = await this.fetchTileTimes(this.tileProduct, this.tileZ, this.tileY, this.tileX);
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this.tileTimes = times || [];
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const timeSel = document.getElementById('tileTimeSelect');
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if (timeSel){
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timeSel.innerHTML = '';
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if (this.tileTimes.length === 0){
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const opt = document.createElement('option'); opt.value=''; opt.textContent='无可用时次'; timeSel.appendChild(opt);
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} else {
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this.tileTimes.forEach(dt=>{ const o=document.createElement('option'); o.value=dt; o.textContent=dt; timeSel.appendChild(o); });
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this.tileCurrentIdx = 0;
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timeSel.value = this.tileTimes[0];
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await this.loadAndRenderTile(this.tileTimes[0]);
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}
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this.updateTileCountInfo();
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}
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}catch(e){ console.error('加载瓦片时次失败', e); }
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},
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updateTileCountInfo(){
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const el = document.getElementById('tileCountInfo');
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if (!el) return;
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const total = this.tileTimes ? this.tileTimes.length : 0;
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const idxDisp = (this.tileCurrentIdx != null && this.tileCurrentIdx >= 0) ? (this.tileCurrentIdx+1) : 0;
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el.textContent = `共${total}条，第${idxDisp}条`;
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const prevBtn = document.getElementById('btnTilePrev');
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const nextBtn = document.getElementById('btnTileNext');
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if (prevBtn) prevBtn.disabled = !(total>0 && this.tileCurrentIdx < total-1);
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if (nextBtn) nextBtn.disabled = !(total>0 && this.tileCurrentIdx > 0);
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},
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async fetchTileTimes(product, z,y,x){
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const sEl = document.getElementById('startDate');
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const eEl = document.getElementById('endDate');
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let url;
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if (product==='rain') url = `/api/rain/times?z=${z}&y=${y}&x=${x}`; else url = `/api/radar/times?z=${z}&y=${y}&x=${x}`;
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if (sEl && eEl && sEl.value && eEl.value) {
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const from = sEl.value.replace('T',' ') + ':00';
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const to = eEl.value.replace('T',' ') + ':00';
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url += `&from=${encodeURIComponent(from)}&to=${encodeURIComponent(to)}`;
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} else {
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url += '&limit=60';
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}
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const r = await fetch(url);
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if(!r.ok) return [];
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const j = await r.json();
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return j.times || [];
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},
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async loadAndRenderTile(dtStr){
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try{
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const z=this.tileZ,y=this.tileY,x=this.tileX;
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const url = this.tileProduct==='rain' ? `/api/rain/at?z=${z}&y=${y}&x=${x}&dt=${encodeURIComponent(dtStr)}` : `/api/radar/at?z=${z}&y=${y}&x=${x}&dt=${encodeURIComponent(dtStr)}`;
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const r = await fetch(url);
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if(!r.ok){ console.warn('瓦片未找到', dtStr); return; }
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const t = await r.json();
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await this.renderTileOnMap(this.tileProduct, t);
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}catch(e){ console.error('加载/渲染瓦片失败', e); }
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},
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renderTileOnMap(product, t){
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if(!t || !t.values) return;
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const w=t.width, h=t.height, resDeg=t.res_deg;
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const west=t.west, south=t.south, east=t.east, north=t.north;
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// 生成画布
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const canvas = document.createElement('canvas');
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canvas.width = w; canvas.height = h;
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const ctx = canvas.getContext('2d');
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const imgData = ctx.createImageData(w, h);
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// 色带
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let colorFunc;
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if (product==='rain'){
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const edges = [0,5,7.5,10,12.5,15,17.5,20,25,30,40,50,75,100, Infinity];
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const colors = [
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[255,255,255], [126,212,121], [110,200,109], [97,169,97], [81,148,76], [90,158,112],
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[143,194,254], [92,134,245], [66,87,240], [45,48,214], [26,15,166], [63,22,145], [191,70,148], [213,1,146], [213,1,146]
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];
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colorFunc = (mm)=>{
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if (mm===0) return [0,0,0,0]; // 0 值透明
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let idx=0; while(idx<edges.length-1 && !(mm>=edges[idx] && mm<edges[idx+1])) idx++;
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const c = colors[Math.min(idx, colors.length-1)]; return [c[0],c[1],c[2],220];
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};
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} else {
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// radar dBZ，0..75 映射 15 段
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const colors = [[0,0,255],[0,191,255],[0,255,255],[127,255,212],[124,252,0],[173,255,47],[255,255,0],[255,215,0],[255,165,0],[255,140,0],[255,69,0],[255,0,0],[220,20,60],[199,21,133],[139,0,139]];
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colorFunc = (dbz)=>{
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let v = Math.max(0, Math.min(75, dbz));
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if (v===0) return [0,0,0,0]; // 0 值透明
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let bin = Math.floor(v/5); if (bin>=colors.length) bin=colors.length-1;
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const c = colors[bin]; return [c[0],c[1],c[2],220];
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};
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}
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// API 行从南到北？我们按数组行序逐行，从上到下绘制需倒置行
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let p=0;
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for(let row=0; row<h; row++){
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const srcRow = t.values[row] || [];
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const dstRow = (h-1-row); // 翻转以匹配北向上
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for(let col=0; col<w; col++){
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const v = srcRow[col];
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let rgba;
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if (v==null){ rgba=[0,0,0,0]; }
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else { rgba = colorFunc(Number(v)); }
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const off = (dstRow*w + col)*4;
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imgData.data[off+0]=rgba[0];
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imgData.data[off+1]=rgba[1];
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imgData.data[off+2]=rgba[2];
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imgData.data[off+3]=rgba[3];
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}
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}
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ctx.putImageData(imgData, 0, 0);
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// 去除数值文本叠加（应用户要求）
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const dataURL = canvas.toDataURL('image/png');
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const extent4326 = [west, south, east, north];
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const proj = this.map.getView().getProjection();
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const extentProj = ol.proj.transformExtent(extent4326, 'EPSG:4326', proj);
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const src = new ol.source.ImageStatic({ url: dataURL, imageExtent: extentProj, projection: proj });
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this.tileOverlayLayer.setSource(src);
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// 保存最近一次用于拾取
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this.tileLast = { product, meta: { west, south, east, north, resDeg, width:w, height:h }, values: t.values };
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this.setupTileHover();
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},
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setupTileHover(){
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if (this._hoverBound) return;
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const tip = document.getElementById('tileValueTooltip');
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if (!tip) return;
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this.map.on('pointermove', (evt)=>{
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try{
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if (!this.tileLast || !this.tileOverlayLayer || !this.tileOverlayLayer.getSource()) { tip.style.display='none'; return; }
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const coord = this.map.getEventCoordinate(evt.originalEvent);
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const lonlat = ol.proj.transform(coord, this.map.getView().getProjection(), 'EPSG:4326');
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const {west,south,east,north,resDeg} = this.tileLast.meta;
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const lon = lonlat[0], lat = lonlat[1];
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if (lon<west || lon>east || lat<south || lat>north) { tip.style.display='none'; return; }
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const col = Math.floor((lon - west)/resDeg);
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const row = Math.floor((lat - south)/resDeg);
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if (row<0 || row>=this.tileLast.meta.height || col<0 || col>=this.tileLast.meta.width) { tip.style.display='none'; return; }
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const v = this.tileLast.values[row]?.[col];
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if (v==null) { tip.style.display='none'; return; }
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const val = Number(v);
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// 构建文本
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const txt = this.tileLast.product==='rain' ? `${val.toFixed(1)} mm` : `${val.toFixed(1)} dBZ`;
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tip.textContent = txt;
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// 位置
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const pixel = this.map.getPixelFromCoordinate(coord);
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tip.style.left = (pixel[0]+10) + 'px';
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tip.style.top = (pixel[1]+10) + 'px';
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tip.style.display = 'block';
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}catch{ tip.style.display='none'; }
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});
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this._hoverBound = true;
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},
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// 设置事件监听
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setupEventListeners() {
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// 监听缩放事件
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this.map.getView().on('change:resolution', () => {
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const zoom = this.map.getView().getZoom();
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this.updateClusterDistance(zoom);
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this.updateLayerVisibility(zoom);
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});
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// 添加点击事件
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this.map.on('click', (event) => this.handleMapClick(event));
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// 添加鼠标移动事件
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this.map.on('pointermove', (event) => {
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const pixel = this.map.getEventPixel(event.originalEvent);
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const hit = this.map.hasFeatureAtPixel(pixel);
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this.map.getTargetElement().style.cursor = hit ? 'pointer' : '';
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});
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},
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// 处理地图点击
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handleMapClick(event) {
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const feature = this.map.forEachFeatureAtPixel(event.pixel, feature => feature);
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if (!feature) return;
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const features = feature.get('features');
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if (features && features.length > 1) {
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this.handleClusterClick(features);
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} else {
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this.handleStationClick(features ? features[0] : feature);
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}
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},
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// 处理集群点击
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handleClusterClick(features) {
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const extent = ol.extent.createEmpty();
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features.forEach(feature => {
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ol.extent.extend(extent, feature.getGeometry().getExtent());
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});
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const zoom = this.map.getView().getZoom();
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const targetZoom = Math.min(
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features.length <= 5 ? this.CLUSTER_THRESHOLD : zoom + 2,
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this.CLUSTER_THRESHOLD
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);
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this.map.getView().fit(extent, {
|
||
padding: [100, 100, 100, 100],
|
||
duration: 800,
|
||
maxZoom: targetZoom
|
||
});
|
||
},
|
||
|
||
// 处理站点点击
|
||
handleStationClick(feature) {
|
||
const decimalId = feature.get('decimalId');
|
||
if (!decimalId) return;
|
||
|
||
document.getElementById('stationInput').value = decimalId;
|
||
|
||
const center = feature.getGeometry().getCoordinates();
|
||
const currentZoom = this.map.getView().getZoom();
|
||
|
||
if (currentZoom < this.CLUSTER_THRESHOLD) {
|
||
this.map.getView().animate({
|
||
center: center,
|
||
zoom: this.CLUSTER_THRESHOLD,
|
||
duration: 500
|
||
});
|
||
}
|
||
|
||
if (document.getElementById('interval').value === '1hour') {
|
||
// 触发查询事件
|
||
window.dispatchEvent(new CustomEvent('query-history-data'));
|
||
}
|
||
},
|
||
|
||
// 更新集群距离
|
||
updateClusterDistance(zoom) {
|
||
let distance;
|
||
if (zoom < 5) distance = 120;
|
||
else if (zoom < 7) distance = 90;
|
||
else if (zoom < 9) distance = 60;
|
||
else if (zoom < this.CLUSTER_THRESHOLD) distance = 40;
|
||
else distance = 0;
|
||
|
||
this.clusterSource.setDistance(distance);
|
||
this.clusterSource.refresh();
|
||
|
||
setTimeout(() => {
|
||
this.clusterLayer.changed();
|
||
this.singleStationLayer.changed();
|
||
}, 100);
|
||
},
|
||
|
||
// 更新图层可见性
|
||
updateLayerVisibility(zoom) {
|
||
if (zoom >= this.CLUSTER_THRESHOLD) {
|
||
this.clusterLayer.setVisible(false);
|
||
this.singleStationLayer.setVisible(true);
|
||
} else {
|
||
this.clusterLayer.setVisible(true);
|
||
this.singleStationLayer.setVisible(false);
|
||
}
|
||
},
|
||
|
||
// 创建站点样式
|
||
createStationStyle(feature) {
|
||
const isOnline = new Date(feature.get('lastUpdate')) > new Date(Date.now() - 5*60*1000);
|
||
const zoom = this.map ? this.map.getView().getZoom() : 10;
|
||
let labelText = '';
|
||
|
||
if (zoom >= this.CLUSTER_THRESHOLD - 2) {
|
||
labelText = `${feature.get('decimalId') || '未知'} | ${feature.get('name') || '未知'} | ${feature.get('location') || '未知'}`;
|
||
}
|
||
|
||
return new ol.style.Style({
|
||
image: this.getMarkerIconStyle(isOnline).getImage(),
|
||
text: new ol.style.Text({
|
||
text: labelText,
|
||
font: '11px Arial',
|
||
offsetY: -24,
|
||
textAlign: 'center',
|
||
textBaseline: 'bottom',
|
||
fill: new ol.style.Fill({ color: '#666' }),
|
||
stroke: new ol.style.Stroke({ color: '#fff', width: 2 })
|
||
})
|
||
});
|
||
},
|
||
|
||
// 创建集群样式
|
||
createClusterStyle(feature) {
|
||
const features = feature.get('features');
|
||
const size = features.length;
|
||
const zoom = this.map.getView().getZoom();
|
||
|
||
if (zoom < this.CLUSTER_THRESHOLD) {
|
||
if (size > 1) {
|
||
const radius = Math.min(16 + size * 0.8, 32);
|
||
const fontSize = Math.min(11 + size/12, 16);
|
||
|
||
return new ol.style.Style({
|
||
image: new ol.style.Circle({
|
||
radius: radius,
|
||
fill: new ol.style.Fill({ color: 'rgba(0, 123, 255, 0.8)' }),
|
||
stroke: new ol.style.Stroke({ color: '#fff', width: 2 })
|
||
}),
|
||
text: new ol.style.Text({
|
||
text: String(size),
|
||
fill: new ol.style.Fill({ color: '#fff' }),
|
||
font: `bold ${fontSize}px Arial`,
|
||
offsetY: 1
|
||
})
|
||
});
|
||
}
|
||
return new ol.style.Style({
|
||
image: new ol.style.Circle({
|
||
radius: 6,
|
||
fill: new ol.style.Fill({
|
||
color: new Date(features[0].get('lastUpdate')) >
|
||
new Date(Date.now() - 5*60*1000) ? '#007bff' : '#6c757d'
|
||
}),
|
||
stroke: new ol.style.Stroke({ color: '#fff', width: 2 })
|
||
})
|
||
});
|
||
}
|
||
|
||
if (size === 1) {
|
||
return this.createStationStyle(features[0]);
|
||
}
|
||
|
||
const radius = Math.min(16 + size * 0.8, 32);
|
||
const fontSize = Math.min(11 + size/12, 16);
|
||
|
||
return new ol.style.Style({
|
||
image: new ol.style.Circle({
|
||
radius: radius,
|
||
fill: new ol.style.Fill({ color: 'rgba(0, 123, 255, 0.8)' }),
|
||
stroke: new ol.style.Stroke({ color: '#fff', width: 2 })
|
||
}),
|
||
text: new ol.style.Text({
|
||
text: String(size),
|
||
fill: new ol.style.Fill({ color: '#fff' }),
|
||
font: `bold ${fontSize}px Arial`,
|
||
offsetY: 1
|
||
})
|
||
});
|
||
},
|
||
|
||
// 获取标记图标样式
|
||
getMarkerIconStyle(isOnline) {
|
||
const key = isOnline ? 'online' : 'offline';
|
||
if (this.markerStyleCache?.[key]) return this.markerStyleCache[key];
|
||
|
||
const iconPath = isOnline ? '/static/images/marker-online.svg' : '/static/images/marker-offline.svg';
|
||
const style = new ol.style.Style({
|
||
image: new ol.style.Icon({
|
||
src: iconPath,
|
||
anchor: [0.5, 1],
|
||
anchorXUnits: 'fraction',
|
||
anchorYUnits: 'fraction',
|
||
scale: 0.9
|
||
})
|
||
});
|
||
|
||
if (!this.markerStyleCache) this.markerStyleCache = {};
|
||
this.markerStyleCache[key] = style;
|
||
return style;
|
||
},
|
||
|
||
// 切换地图图层
|
||
switchLayer(layerType) {
|
||
Object.keys(this.layers).forEach(key => {
|
||
this.layers[key].setVisible(key === layerType);
|
||
});
|
||
},
|
||
|
||
// 切换地图折叠状态
|
||
toggleMap() {
|
||
this.isMapCollapsed = !this.isMapCollapsed;
|
||
const mapContainer = document.getElementById('mapContainer');
|
||
const toggleBtn = document.getElementById('toggleMapBtn');
|
||
|
||
if (this.isMapCollapsed) {
|
||
mapContainer.classList.add('collapsed');
|
||
toggleBtn.textContent = '展开地图';
|
||
} else {
|
||
mapContainer.classList.remove('collapsed');
|
||
toggleBtn.textContent = '折叠地图';
|
||
}
|
||
|
||
setTimeout(() => {
|
||
this.map.updateSize();
|
||
}, 300);
|
||
},
|
||
|
||
// 加载站点数据
|
||
async loadStations() {
|
||
try {
|
||
const response = await fetch('/api/stations');
|
||
this.stations = await response.json();
|
||
|
||
// 更新WH65LP设备数量
|
||
const wh65lpDevices = this.stations.filter(station => station.device_type === 'WH65LP');
|
||
document.getElementById('wh65lpCount').textContent = wh65lpDevices.length;
|
||
|
||
this.displayStationsOnMap();
|
||
} catch (error) {
|
||
console.error('加载站点失败:', error);
|
||
}
|
||
},
|
||
|
||
// 在地图上显示站点
|
||
displayStationsOnMap() {
|
||
const source = this.stationLayer.getSource();
|
||
source.clear();
|
||
|
||
const now = Date.now();
|
||
const fiveMinutesAgo = now - 5 * 60 * 1000;
|
||
let onlineCount = 0;
|
||
let offlineCount = 0;
|
||
|
||
this.stations.forEach(station => {
|
||
if (station.latitude && station.longitude) {
|
||
const isOnline = new Date(station.last_update) > new Date(fiveMinutesAgo);
|
||
if (isOnline) onlineCount++; else offlineCount++;
|
||
|
||
const feature = new ol.Feature({
|
||
geometry: new ol.geom.Point(ol.proj.fromLonLat([station.longitude, station.latitude])),
|
||
stationId: station.station_id,
|
||
decimalId: station.decimal_id,
|
||
name: station.name,
|
||
location: station.location,
|
||
lastUpdate: station.last_update,
|
||
isOnline: isOnline
|
||
});
|
||
|
||
source.addFeature(feature);
|
||
}
|
||
});
|
||
|
||
console.log(`已加载 ${this.stations.length} 个站点，在线: ${onlineCount}，离线: ${offlineCount}`);
|
||
|
||
if (source.getFeatures().length > 0) {
|
||
if (source.getFeatures().length === 1) {
|
||
const feature = source.getFeatures()[0];
|
||
this.map.getView().setCenter(feature.getGeometry().getCoordinates());
|
||
this.map.getView().setZoom(12);
|
||
} else {
|
||
const extent = source.getExtent();
|
||
this.map.getView().fit(extent, {
|
||
padding: [50, 50, 50, 50],
|
||
maxZoom: 10
|
||
});
|
||
}
|
||
}
|
||
|
||
this.updateClusterDistance(this.map.getView().getZoom());
|
||
}
|
||
};
|
||
|
||
// 导出地图对象
|
||
window.WeatherMap = WeatherMap;
|