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="./latlng.js"></script>
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<script src="./analyser.js"></script>
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<script src="./viewshed.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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2025-05-29 02:59:44 +00:00
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Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiIyNDMxOTA2NS1lY2Q3LTQ0YmUtOTE1Mi1iNWE2OGYwZjc0MjkiLCJpZCI6MjM1NjMwLCJpYXQiOjE3MzA3MjQzMTJ9.Xhu-9FyVEyqBKWEr0V9Sybt-elTCWHt9peL9-mNh-4E'
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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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contextOptions: {
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requestWebgl1: true,
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},
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});
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// 开启帧率
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viewer.scene.debugShowFramesPerSecond = true;
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// 加载默认地形
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viewer.terrainProvider = Cesium.createWorldTerrain({
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requestWaterMask: true, // 请求水掩膜以实现水体效果
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requestVertexNormals: true // 请求法线以实现光照效果
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});
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// 深度监测
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viewer.scene.globe.depthTestAgainstTerrain = true;
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var viewsheds = [];
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var options = {
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qdOffset: 2,
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zdOffset: 2
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};
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var viewshed2 = new viewshed(viewer, options);
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viewsheds.push(viewshed2);
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function click_clear() {
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viewsheds.forEach((element) => {
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element.clear();
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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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