cesium——鼠标拾取坐标并转换为经纬高

cesium拾取坐标的两种方法

一、获取椭球体表面的经纬度

var viewer = new Cesium.Viewer('container');var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);handler.setInputAction(function (event) {// 屏幕坐标转世界坐标——关键点var ellipsoid = viewer.scene.globe.ellipsoid;var cartesian = viewer.camera.pickEllipsoid(event.position, ellipsoid);//将笛卡尔坐标转换为地理坐标var cartographic = Cesium.Cartographic.fromCartesian(cartesian);//将弧度转为度的十进制度表示var lon = Cesium.Math.toDegrees(cartographic.longitude);var lat = Cesium.Math.toDegrees(cartographic.latitude);}, Cesium.ScreenSpaceEventType.LEFT_CLICK)

二、获取地形表面经纬高

var viewer = new Cesium.Viewer('container');var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);handler.setInputAction(function (event) {// 屏幕坐标转世界坐标——关键点var ray=viewer.camera.getPickRay(event.position);var cartesian=viewer.scene.globe.pick(ray,viewer.scene);//将笛卡尔坐标转换为地理坐标var cartographic = Cesium.Cartographic.fromCartesian(cartesian);//将弧度转为度的十进制度表示var lon = Cesium.Math.toDegrees(cartographic.longitude);var lat = Cesium.Math.toDegrees(cartographic.latitude);// 获取海拔高度var height1 = viewer.scene.globe.getHeight(cartographic);var height2 = cartographic.height;}, Cesium.ScreenSpaceEventType.LEFT_CLICK);