learning_cesium/加载地形数据.html

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<script src="./Build/Cesium/Cesium.js"></script>
<link href="./Build/Cesium/Widgets/widgets.css" rel="stylesheet" />
<style>
@import url(./Build/Cesium/Widgets/widgets.css);
html,
body,
#cesiumContainer {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
overflow: hidden;
}
</style>
<!-- <script src="https://cesium.com/downloads/cesiumjs/releases/1.68/Build/Cesium/Cesium.js"></script> -->
<!-- <link href="https://cesium.com/downloads/cesiumjs/releases/1.68/Build/Cesium/Widgets/widgets.css" rel="stylesheet"> -->
</head>
<body>
<div id="cesiumContainer"></div>
<script>
/**
* 数据主要分为两大类
* 1、地形数据和影像服务
* 2、矢量数据
*
* 地形数据相当于Cesium的骨架影像地图则是Cesium的外衣骨架只有一副外衣可以换。
* 一个项目中通常只有一种地形数据terrainProvider不支持多种地形数据的叠加。
*
* 使用Cesium的静态方法Cesium.createWorldTerrain()加载Cesium的全球地形数据这需要一个Cesium Ion账号的token。
* 它包含了地形光照数据以及水面效果所以的水域数据开启地形光照需要使用VertextNormals扩展水体流动效果可以通过请求WaterMask方法设置
*/
Cesium.Ion.defaultAccessToken =
"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiI5ZjRjNTZkNC01NDYxLTRhMjQtOGEwZC1kZjA3YzQ5YTJlZDkiLCJpZCI6MjYwODQsInNjb3BlcyI6WyJhc3IiLCJnYyJdLCJpYXQiOjE1ODcxOTMwODN9.prGsSKyAW_9Ow5zHYPhbm3LsQL-ApQw5-5PNJkDaHi8";
var viewer = new Cesium.Viewer("cesiumContainer", {
scene3DOnly: true,
selectionIndicator: false,
baseLayerPicker: false,
//使用Cesium ion 中的高程服务
// terrainProvider: new Cesium.CesiumTerrainProvider({
// url: Cesium.IonResource.fromAssetId(1),
// }),
terrainProvider: Cesium.createWorldTerrain({
requestVertexNormal: true, //添加地形光照
requestWaterMask: true, //添加水面波浪效果
}),
});
viewer.scene.globe.enableLighting = true; //terrain和globe同时设置才会有光照效果
// viewer.camera.setView({
// destination: new Cesium.Cartesian3(318563.80878618505, 5644591.227282946, 2966285.7276969287),
// orientation: {
// heading: 6.134811516839214,
// pitch: -0.25770321622063097,
// roll: 0.000020402764222104963,
// },
// });
/**
添加定义地形数据
*/
var rectAngle = new Cesium.Rectangle(
Cesium.Math.toRadians(109.96181),
Cesium.Math.toRadians(19.86912),
Cesium.Math.toRadians(115.23594),
Cesium.Math.toRadians(25.05672)
);
// var customTerrainLayer = new Cesium.CesiumTerrainProvider({
// url:"http://localhost:9000/terrain/911d68d07b9511ecbf80f19916c6cf74",
// requestWaterMask:false,
// credit:"版权信息"
// });
// viewer.terrainProvider = customTerrainLayer;
viewer.camera.flyTo({ destination: rectAngle });
</script>
</body>
</html>