**hi all.**

**how to calculate the destination of camera by giving (x1,y1), to make sure the map center at (x1,y1),**

**the height attribute using current height of the camera, the orientation of the camera are fixed.**

```
viewer.camera.setView( {
destination : Cesium.Cartesian3.fromDegrees(x,y,120000),//how to calculate by x1, y1
orientation: {//fixed
heading : Cesium.Math.toRadians(-0),
pitch : Cesium.Math.toRadians(-40),
roll : 0.0
}
});
```