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<!DOCTYPE html>
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<html lang="zh">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Cesium地图展示</title>
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<script src="https://cesium.com/downloads/cesiumjs/releases/1.111/Build/Cesium/Cesium.js"></script>
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<link href="https://cesium.com/downloads/cesiumjs/releases/1.111/Build/Cesium/Widgets/widgets.css" rel="stylesheet">
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<style>
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#cesiumContainer {
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width: 100%;
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height: 100vh;
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margin: 0;
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padding: 0;
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}
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</style>
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</head>
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<body>
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<div id="cesiumContainer"></div>
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<script>
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// 初始化Cesium查看器
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const viewer = new Cesium.Viewer('cesiumContainer', {
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terrainProvider: new Cesium.EllipsoidTerrainProvider(), // 使用椭球体地形
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animation: false,
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baseLayerPicker: true, // 启用底图选择器
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fullscreenButton: true, // 启用全屏按钮
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geocoder: true, // 启用地理编码器
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homeButton: true, // 启用主页按钮
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infoBox: true, // 启用信息框
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sceneModePicker: true, // 启用场景模式选择器
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selectionIndicator: true,
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timeline: false,
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navigationHelpButton: true
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});
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// 移除默认的影像图层
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viewer.imageryLayers.removeAll();
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// 添加Google卫星图层
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viewer.imageryLayers.addImageryProvider(
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new Cesium.UrlTemplateImageryProvider({
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url: 'https://mt1.google.com/vt/lyrs=s&x={x}&y={y}&z={z}',
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minimumLevel: 1,
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maximumLevel: 20,
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credit: new Cesium.Credit('Google Maps')
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})
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);
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// 添加自定义瓦片图层
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const customTiles = viewer.imageryLayers.addImageryProvider(
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new Cesium.UrlTemplateImageryProvider({
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url: '/tiles/{z}/{x}_{y}.png', // 修改为X_Y.png格式
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credit: new Cesium.Credit('Custom Tiles'),
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// 添加错误处理
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errorCallback: function (error) {
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console.error('瓦片加载错误:', error);
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},
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// 添加瓦片请求处理
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requestVertexNormals: true,
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requestWaterMask: true,
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// 添加瓦片加载重试
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maximumRetries: 3,
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// 添加瓦片加载超时
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timeout: 10000,
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// 添加瓦片加载策略
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tileCacheSize: 1000, // 增加缓存大小
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enablePickFeatures: false, // 禁用要素拾取以提高性能
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// 添加瓦片加载策略
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tileDiscardPolicy: new Cesium.DiscardMissingTileImagePolicy({
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missingImageUrl: '/tiles/empty.png', // 可选：设置缺失瓦片的替代图片
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pixelsToCheck: [0, 0, 1, 1], // 检查瓦片的像素点
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disableCheckIfAllPixelsAreTransparent: true // 如果所有像素都是透明的，则禁用检查
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}),
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// 添加瓦片加载优先级
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tileLoadPriority: 1, // 设置高优先级
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// 添加瓦片加载策略
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tileLoadProgressEvent: new Cesium.Event(), // 添加瓦片加载进度事件
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// 添加瓦片加载策略
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tileLoadErrorEvent: new Cesium.Event() // 添加瓦片加载错误事件
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})
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);
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// 设置瓦片图层的透明度
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customTiles.alpha = 0.7;
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// 设置相机位置到瓦片区域
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viewer.camera.setView({
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destination: Cesium.Rectangle.fromDegrees(
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114.450165, // west
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30.248171, // south
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114.454021, // east
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30.250863 // north
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),
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orientation: {
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heading: 0,
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pitch: -Math.PI / 4,
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roll: 0
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}
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});
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// 添加一些调试信息
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console.log('Cesium版本:', Cesium.VERSION);
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console.log('查看器已初始化');
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// KML加载功能封装
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function loadKMLFiles(enable = true) {
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if (!enable) {
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// 如果禁用，清除所有KML数据源
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viewer.dataSources.removeAll();
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return;
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}
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// 获取所有KML文件列表
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fetch('/kml_files')
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.then(response => response.json())
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.then(kmlFiles => {
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console.log('找到的KML文件:', kmlFiles);
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// 创建一个数组来存储所有的数据源
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const dataSources = [];
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// 加载所有KML文件
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Promise.all(kmlFiles.map(kmlFile => {
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const kmlDataSource = new Cesium.KmlDataSource();
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return kmlDataSource.load(`/kml/${kmlFile}`, {
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camera: viewer.scene.camera,
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canvas: viewer.scene.canvas
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}).then(function (dataSource) {
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console.log(`成功加载KML文件: ${kmlFile}`);
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viewer.dataSources.add(dataSource);
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dataSources.push(dataSource);
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return dataSource;
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}).catch(function (error) {
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console.error(`加载KML文件 ${kmlFile} 失败:`, error);
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});
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})).then(function () {
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// 当所有KML文件都加载完成后，定位到最后一个KML文件
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if (dataSources.length > 0) {
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const lastDataSource = dataSources[dataSources.length - 1];
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// 使用最后一个KML文件的经纬度范围
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const rectangle = Cesium.Rectangle.fromDegrees(
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114.450165, // west
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30.248171, // south
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114.454021, // east
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30.250863 // north
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);
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// 设置相机位置
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viewer.camera.setView({
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destination: rectangle,
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orientation: {
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heading: 0,
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pitch: -Math.PI / 4,
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roll: 0
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}
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});
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}
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});
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})
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.catch(error => {
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console.error('获取KML文件列表失败:', error);
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});
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}
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// 添加标记功能
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function addMarker(longitude, latitude, name, description) {
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const entity = viewer.entities.add({
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position: Cesium.Cartesian3.fromDegrees(longitude, latitude),
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name: name,
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label: {
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text: name,
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font: '14pt sans-serif',
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style: Cesium.LabelStyle.FILL_AND_OUTLINE,
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outlineWidth: 2,
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verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
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pixelOffset: new Cesium.Cartesian2(0, -10)
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},
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description: description,
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billboard: {
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image: 'https://upload.wikimedia.org/wikipedia/commons/thumb/8/88/Map_marker.svg/128px-Map_marker.svg.png',
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verticalOrigin: Cesium.VerticalOrigin.BOTTOM,
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scale: 0.5
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}
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});
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// 添加点击事件
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viewer.screenSpaceEventHandler.setInputAction(function (movement) {
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const pickedObject = viewer.scene.pick(movement.position);
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if (Cesium.defined(pickedObject) && pickedObject.id === entity) {
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// 显示信息窗口
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viewer.selectedEntity = entity;
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}
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}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
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}
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// 示例：添加一个标记
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addMarker(114.452093, 30.249517, '测试标记', '这是一个测试标记点<br>点击查看详细信息');
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// 初始加载KML文件（设置为false可以禁用KML加载）
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loadKMLFiles(false);
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</script>
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</body>
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</html> |
