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https://github.com/jiawanlong/Cesium-Examples.git
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79 lines
3.5 KiB
HTML
79 lines
3.5 KiB
HTML
<!--********************************************************************
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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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<script src="./latlng.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.eyJqdGkiOiIyMjBhMzcxMC0wNjBiLTRmYjItYjY1MC0wMzAwMzMyMGUyMmEiLCJpZCI6MzAzNzc3LCJpYXQiOjE3NDc2Mzk0NTV9.E_90aKtVdzRGlU2z48VwJ4mWvl-uuDkfQBCOO6zbzn4'
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const viewer = new Cesium.Viewer('map', {});
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// 开启帧率
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viewer.scene.debugShowFramesPerSecond = true;
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// 加载离线地形
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// viewer.terrainProvider = new Cesium.CesiumTerrainProvider({
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// url: 'http://localhost/dem_30m/',
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// });
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// 根据xy，可以获得高度，贴地用
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// var cartographic=Cesium.Cartographic.fromDegrees(88.01574604728957, 31.464332955079115);
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// var posi = new Cesium.Cartographic(cartographic.longitude, cartographic.latitude)
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// var height21 =viewer.scene.globe.getHeight(posi)
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var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
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handler.setInputAction(function (movement) {
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// 1、屏幕坐标
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console.log(movement.position);
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// 2、椭球面坐标（不包含地形、模型、倾斜摄影表面。）
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var position = viewer.scene.camera.pickEllipsoid(movement.position, viewer.scene.globe.ellipsoid);
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console.log(position);
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// 经纬度坐标
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var cartesian3 = new Cesium.Cartesian3(position.x, position.y, position.z)
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var cartographic = viewer.scene.globe.ellipsoid.cartesianToCartographic(cartesian3);
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var lat = Cesium.Math.toDegrees(cartographic.latitude);
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var lng = Cesium.Math.toDegrees(cartographic.longitude);
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console.log(lng, lat)
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// 3、场景坐标（包含了地形、倾斜摄影表面、模型的坐标）
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// 只有在开启地形深度检测viewer.scene.globe.depthTestAgainstTerrain = true，且不使用默认地形时是准确的
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var position = viewer.scene.pickPosition(movement.position);
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console.log(position);
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// 4、地表坐标（这里是地球表面的世界坐标，包含地形，不包括模型、倾斜摄影表面。）
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var ray = viewer.camera.getPickRay(movement.position);
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var position = viewer.scene.globe.pick(ray, viewer.scene);
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console.log(position);
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}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
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// 扩展获取当前鼠标移动的位置
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handler.setInputAction(function (movement) {
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// console.log(viewer.scene, movement.endPosition, null)
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// 获取当前坐标
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console.log(latlng.getCurrentMousePosition(viewer.scene, movement.endPosition, null))
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// 获取当前坐标并转换为经纬度
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console.log(latlng.Cartesian3To(latlng.getCurrentMousePosition(viewer.scene, movement.endPosition, null), viewer).latlng)
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}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
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</script>
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</body>
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</html> |