Camera height calculation problem

[wcwcwcwc]

mapbox-gl-js version: 2.6.0

browser: Chrome 101.0.4951.54

Question

When I set to the maximum zoom and to the maximum Pitch, I get the camera height, and then set the same height. At this time, I find the camera height is inconsistent with that of the front and rear cameras.
here is my code:

 map.on('click', () => {
       const camera = map.getFreeCameraOptions();
       const coord = new mapboxgl.MercatorCoordinate(camera._position.x, camera._position.y,
       camera._position.z).toLngLat();
       const height = new mapboxgl.MercatorCoordinate(camera._position.x, camera._position.y,camera._position.z).toAltitude();
                
       console.log(height);
       camera.position = mapboxgl.MercatorCoordinate.fromLngLat([coord.lng, coord.lat],
       height);

       map.setFreeCameraOptions(camera);

       const camera2 = map.getFreeCameraOptions();
       const height_new = new mapboxgl.MercatorCoordinate(camera2._position.x, camera2._position.y,camera2._position.z).toAltitude();
       console.log(height_new);
     })  

and then the result:

Solution

I found there was a problem calculating the camera height in this method and distToCenter didn't take camera.forward() into account, so I changed it to this，And it worked：

[SnailBones]

Thanks for the report and explaining your fix @wcwcwcwc! Would you be interested in opening a PR from your fork?