const coord = new Cesium.Cartesian3(point[0], point[1], point[2])
var ellipsoid=viewer.scene.globe.ellipsoid;
var cartograhphic=ellipsoid.cartesianToCartographic(coord);
var lat=Cesium.Math.toDegrees(cartograhphic.latitude);
var lng=Cesium.Math.toDegrees(cartograhphic.longitude);
var alt=cartograhphic.height;
console.log(lng, lat, alt)