2025-03-11 08:25:45 +00:00
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<!--********************************************************************
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* by jiawanlong
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*********************************************************************-->
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8" />
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2025-03-19 03:00:22 +00:00
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<link rel="stylesheet" href="./../../libs/cesium/Cesium1.98/Widgets/widgets.css" />
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<script type="text/javascript" src="./../../libs/cesium/Cesium1.98/Cesium.js"></script>
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2025-03-11 08:25:45 +00:00
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<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
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<script src="./turf.min.js"></script>
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</head>
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<body style="
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margin: 0;
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overflow: hidden;
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background: #fff;
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width: 100%;
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height: 100%;
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position: absolute;
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top: 0;
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">
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<div id="map" style="margin: 0 auto; width: 100%; height: 100%"></div>
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<script type="text/javascript">
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Cesium.Ion.defaultAccessToken =
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2025-06-07 11:30:00 +00:00
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"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiIyMjBhMzcxMC0wNjBiLTRmYjItYjY1MC0wMzAwMzMyMGUyMmEiLCJpZCI6MzAzNzc3LCJpYXQiOjE3NDc2Mzk0NTV9.E_90aKtVdzRGlU2z48VwJ4mWvl-uuDkfQBCOO6zbzn4";
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2025-03-11 08:25:45 +00:00
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const viewer = new Cesium.Viewer("map", {});
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viewer.scene.debugShowFramesPerSecond = true;
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viewer.scene.globe.depthTestAgainstTerrain = true;
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const tileset = new Cesium.Cesium3DTileset({
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url: "./3ds2/tileset.json",
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});
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tileset.readyPromise
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.then(function (tileset) {
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viewer.scene.primitives.add(tileset);
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viewer.zoomTo(tileset);
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})
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.catch(function (error) {
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console.log(error);
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});
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let features = [];
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let myEntityCollection = new Cesium.CustomDataSource("clickEntityCollection");
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viewer.dataSources.add(myEntityCollection);
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axios
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.get("./tjp.json") //读取区域json
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.then((response) => {
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features = response.data.features;
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features.forEach((item) => {
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let degreesArray = getDegreesArray(item);
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var entity1 = new Cesium.Entity({
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beof: '建筑',
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polygon: {
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hierarchy: Cesium.Cartesian3.fromDegreesArray(degreesArray),
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material: Cesium.Color.WHITE.withAlpha(0),
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classificationType: Cesium.ClassificationType.CESIUM_3D_TILE,
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},
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});
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myEntityCollection.entities.add(entity1);
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});
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});
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//获取坐标串 不带高度 工具类
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function getDegreesArray(feature) {
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let degreesArray = [];
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let coordinates = feature.geometry.coordinates[0];
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for (let i = 0; i < coordinates.length; i++) {
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const element = coordinates[i];
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degreesArray.push(element[0]);
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degreesArray.push(element[1]);
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}
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return degreesArray;
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}
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//注册点击事件
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var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
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//初始化上一次高亮的建筑
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var entityBuild
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handler.setInputAction(function (e) {
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console.log(new Date().getTime())
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var pick = viewer.scene.pick(e.position);
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var cartesian = viewer.scene.pickPosition(e.position);
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if (pick && pick.id) {
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//如果选中的是建筑
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if (pick.id.beof == "建筑") {
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//则将上一次的建筑颜色变为无色
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if (entityBuild) {
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entityBuild.material.color = Cesium.Color.WHITE.withAlpha(0)
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}
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//再高亮这次的建筑
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entityBuild = pick.id.polygon
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entityBuild.material.color = Cesium.Color.RED.withAlpha(1)
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console.log(new Date().getTime())
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}
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} else {
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//如果没选中则同样改为无色
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if (entityBuild) {
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entityBuild.material.color = Cesium.Color.WHITE.withAlpha(0)
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}
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}
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}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
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</script>
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</body>
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</html>
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