Cesium获取精准经纬度以及模型高度

 var handler = new Cesium.ScreenSpaceEventHandler(viewer.scene._imageryLayerCollection);

                            var ray,position1,cartographic1,lon,lat,height;

                            handler.setInputAction(function (event) { 

                                    ray = viewer.scene.camera.getPickRay(event.endPosition); 

                                    position1 = viewer.scene.globe.pick(ray,viewer.scene); 

                                    cartographic1 = Cesium.Ellipsoid.WGS84.cartesianToCartographic(position1); 

                                    var feature = viewer.scene.pick(event.endPosition); 

                                    if (feature == undefined) { 

                                    lon = Cesium.Math.toDegrees(cartographic1.longitude); 

                                    lat = Cesium.Math.toDegrees(cartographic1.latitude); 

                                    height = cartographic1.height; } 

                                    else if(feature instanceof Cesium.Cesium3DTileFeature){ 

                                        var cartesian = viewer.scene.pickPosition(event.endPosition); 

                                        if (Cesium.defined(cartesian) ){

                                        var cartographic = Cesium.Cartographic.fromCartesian(cartesian); 

                                        lon = Cesium.Math.toDegrees(cartographic.longitude); 

                                        lat = Cesium.Math.toDegrees(cartographic.latitude); 

                                        height = cartographic.height;//模型高度 } }

                                        console.log(lon,lat)

                                    }

                                }

                            }, Cesium.ScreenSpaceEventType.MOUSE_MOVE)