2025-03-29 01:30:00 +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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<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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</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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2025-05-18 11:30:00 +00:00
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Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiJjM2EzNGJmNy02N2RmLTQ0MDMtYjI2MS1hZTJiMTIwZGYwMTYiLCJpZCI6MzA0MzEyLCJpYXQiOjE3NDc3MjM3MTV9.ePQNhuoVuDsi_z00lTm5W26wyW1Adcr1AWetGM6WSXI'
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2025-03-29 01:30:00 +00:00
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const viewer = new Cesium.Viewer('map', {});
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// 加载地形
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viewer.terrainProvider = new Cesium.CesiumTerrainProvider({
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url: 'http://data.mars3d.cn/terrain'
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});
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// 监听地形提供者的ready事件
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viewer.terrainProvider.readyPromise.then(function (terrainProvider) {
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console.log('地形已加载完成.');
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getHeight()
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})
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function getHeight() {
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var positions = [
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Cesium.Cartographic.fromDegrees(120.925145, 27.988257),
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Cesium.Cartographic.fromDegrees(87.0, 28.0)
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];
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// 粗略获取高度
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var promise = Cesium.sampleTerrain(viewer.terrainProvider, 11, positions);
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promise.then(function (updatedPositions) {
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console.log('sampleTerrain')
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console.log(updatedPositions)
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});
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// 精确获取高度
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var promise2 = Cesium.sampleTerrainMostDetailed(viewer.terrainProvider, positions);
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promise2.then(function (updatedPositions) {
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console.log('sampleTerrainMostDetailed')
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console.log(updatedPositions)
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});
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// 另外一种获取高度方式（非常不准确！！！）
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var cartographic = Cesium.Cartographic.fromDegrees(120.925145, 27.988257);
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var posi = new Cesium.Cartographic(cartographic.longitude, cartographic.latitude)
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var height = viewer.scene.globe.getHeight(posi)
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console.log(height)
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}
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</script>
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</body>
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</html>
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