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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</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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<button onclick="add()"> 添加自动计算贴地，需要等到地形加载完，且在大范围下 </button>
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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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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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// http://cesium.xin/cesium/cn/Documentation1.72/LabelGraphics.html#.ConstructorOptions
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var hello = viewer.entities.add({
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name: '贴地',
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position: Cesium.Cartesian3.fromDegrees(-75.166493, 39.9060534),
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point: {
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pixelSize: 5,
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color: Cesium.Color.RED,
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outlineColor: Cesium.Color.WHITE,
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outlineWidth: 2,
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verticalOrigin: Cesium.VerticalOrigin.TOP,
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heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
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disableDepthTestDistance: Number.POSITIVE_INFINITY,
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},
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label: {
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text: '贴地',
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font: '14pt monospace',
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outlineWidth: 2,
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verticalOrigin: Cesium.VerticalOrigin.TOP,
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heightReference: Cesium.HeightReference.CLAMP_TO_GROUND,
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disableDepthTestDistance: Number.POSITIVE_INFINITY,
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showBackground: true,
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backgroundColor: Cesium.Color.WHITE
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}
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});
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var world = viewer.entities.add({
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name: '不贴地',
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position: Cesium.Cartesian3.fromDegrees(-95.166493, 39.9060534, 2000),
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point: {
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pixelSize: 5,
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color: Cesium.Color.RED,
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outlineColor: Cesium.Color.WHITE,
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outlineWidth: 2,
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},
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label: {
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text: '不贴地',
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font: '14pt monospace',
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outlineWidth: 2,
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}
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});
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// 自动计算贴地，需要等地形加载完方可
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function add() {
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viewer.camera.flyTo({
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destination: Cesium.Cartesian3.fromDegrees(-115.166493, 39.9060534, 15000.0),
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duration: 3,
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orientation: {
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heading: Cesium.Math.toRadians(90.0), // 水平旋转，围绕Y轴，0为正北方向
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pitch: Cesium.Math.toRadians(-90), // 上下旋转，围绕X轴，-90为俯视地面
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roll: 0.0 // 视口的翻滚角度，围绕Z轴，0为不翻转
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},
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complete: () => {
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setTimeout(() => {
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var cartographic = Cesium.Cartographic.fromDegrees(-115.166493, 39.9060534, 10);
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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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var haha = viewer.entities.add({
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name: '自动计算贴地',
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position: Cesium.Cartesian3.fromDegrees(-115.166493, 39.9060534, height + 0.1),
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point: {
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pixelSize: 5,
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color: Cesium.Color.RED,
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outlineColor: Cesium.Color.WHITE,
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outlineWidth: 2,
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verticalOrigin: Cesium.VerticalOrigin.TOP,
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disableDepthTestDistance: Number.POSITIVE_INFINITY,
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},
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label: {
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text: '自动计算贴地',
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font: '14pt monospace',
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outlineWidth: 2,
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verticalOrigin: Cesium.VerticalOrigin.TOP,
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disableDepthTestDistance: Number.POSITIVE_INFINITY,
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}
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});
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}, 1000)
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}
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});
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}
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// 修改值和属性
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hello.label.text = '我是贴地的'
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hello.label.fillColor = Cesium.Color.RED
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// hello.position = Cesium.Cartesian3.fromDegrees(-100, 39.9060534)
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</script>
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</body>
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</html>
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