打印当前经纬度和高度

        // 捕获鼠标移动事件
        handler.setInputAction(function onMouseMove(movement) {
            // 获得当前的经纬度及高度
            var ellipsoid = viewer.scene.globe.ellipsoid;
            var cartesian = viewer.camera.pickEllipsoid(movement.endPosition, ellipsoid);
            if (cartesian) {
                //将笛卡尔坐标转换为地理坐标
                var cartographic = ellipsoid.cartesianToCartographic(cartesian);
                //将弧度转为度的十进制度表示
                var longitudeString = Cesium.Math.toDegrees(cartographic.longitude);
                var latitudeString = Cesium.Math.toDegrees(cartographic.latitude);
                //获取相机高度
                var height = Math.ceil(viewer.camera.positionCartographic.height);
                console.log('(' + longitudeString + ', ' + latitudeString + "," + height + ')');
            }
        }, Cesium.ScreenSpaceEventType.MOUSE_MOVE);