【Cesium】相机姿态与中心点等参数获取

var handler = new Cesium.ScreenSpaceEventHandler(viewer.canvas);
handler.setInputAction(function (movement) {
//获取鼠标当前位置的经纬度
cartesian = viewer.camera.pickEllipsoid(movement.position);
//获取视图中心点的经纬度
//cartesian = viewer.camera.pickEllipsoid(new Cesium.Cartesian2(viewer.canvas.clientWidth / 2, viewer.canvas.clientHeight / 2));

//将笛卡尔坐标转换为地理坐标
var cartographic = Cesium.Cartographic.fromCartesian(cartesian);
longitudeString = Cesium.Math.toDegrees(cartographic.longitude).toFixed(3);
latitudeString = Cesium.Math.toDegrees(cartographic.latitude).toFixed(3);
}

height = Math.ceil(viewer.camera.positionCartographic.height);

viewer.camera.position;

viewer.camera.pickEllipsoid(new Cesium.Cartesian2(viewer.canva