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="./turf.min.js"></script>
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<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
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</head>
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<body style="margin: 0; overflow: hidden; background: #fff; width: 100%; height: 100%; position: absolute; top: 0">
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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 = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI3ZjQ5ZGUzNC1jNWYwLTQ1ZTMtYmNjYS05YTY4ZTVmN2I2MDkiLCJpZCI6MTE3MTM4LCJpYXQiOjE2NzY0NDUyODB9.ZaNSBIfc1sGLhQd_xqhiSsc0yr8oS0wt1hAo9gbke6M'
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const viewer = new Cesium.Viewer('map', {});
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// Cesium地形
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viewer.terrainProvider = Cesium.createWorldTerrain({
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requestWaterMask: true, // 请求水体效果所需要的海岸线数据
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requestVertexNormals: true// 请求地形照明数据
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});
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// 开启帧率
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viewer.scene.debugShowFramesPerSecond = true;
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// -------------billboardCollection方式加载-----------
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// 本质就是PrimitiveCollection
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// https://cesium.com/learn/cesiumjs/ref-doc/PrimitiveCollection.html
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// pointPrimitiveCollection（点集合）
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// labelCollection（label 集合）
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var points = turf.randomPoint(50000, { bbox: [-180, -90, 180, 90] })
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const billboardCollection = viewer.scene.primitives.add(
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new Cesium.BillboardCollection()
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);
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points.features.forEach((k) => {
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let cor = k.geometry.coordinates;
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billboardCollection.add({
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//根据距离缩放
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scaleByDistance: new Cesium.NearFarScalar(2000000, 1, 8000000, 0.1),
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position: Cesium.Cartesian3.fromDegrees(cor[0], cor[1]),
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image: './icon.png',
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width: 32,
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height: 32,
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});
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})
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// -------------entityCollection方式加载，不推荐-----------
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// var points = turf.randomPoint(10000, { bbox: [-180, -90, 180, 90] })
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// let myEntityCollection = new Cesium.CustomDataSource("clickEntityCollection");
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// viewer.dataSources.add(myEntityCollection);
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// points.features.forEach((k) => {
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// let cor = k.geometry.coordinates;
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// var entity2 = new Cesium.Entity({
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// position: Cesium.Cartesian3.fromDegrees(cor[0], cor[1]),
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// billboard: {
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// image: './icon.png',
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// width: 32,
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// height: 32,
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// }
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// });
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// myEntityCollection.entities.add(entity2);
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// })
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// axios.get('./weibo.json')//读取区域json
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// .then((response) => {
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// response.data[0].forEach((k) => {
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// let cor = k.geoCoord;
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// billboardCollection.add({
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// //根据距离缩放
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// scaleByDistance: new Cesium.NearFarScalar(2000000, 1, 8000000, 0.1),
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// position: Cesium.Cartesian3.fromDegrees(cor[0], cor[1]),
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// image: './icon.png',
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// width: 12,
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// height: 12,
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// });
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// })
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// })
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</script>
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</body>
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</html>
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