Applying Mapbox view padding (camera vanishing point offset) to Deck.gl

[cafca]

I am using a Mapbox map with a Deck.gl overlay, which I synchronize by setting viewState whenever the Mapbox map moves.

Mapbox allows offsetting the camera vanishing point, which is very useful when toggling a sidebar. I have not been successful at synchronizing the Deck.gl overlay to this camera change. My guess is that I need to apply Mapbox' projection matrix in addition to updating the view state properties but I am not able to access and apply the right matrix.

Can somebody help me out with this? I don't know how important Mapbox compatibility is for Deck.gl but this may even be a candidate for a Deck.gl feature request.

Demo

Notice how in the video below, the arc layer gets out of sync with the marker positions when the sidebar is opened:

Bildschirmvideo.aufnehmen.2021-01-20.um.11.41.02.mov

[Pessimistress]

My guess is that I need to apply Mapbox' projection matrix in addition to updating the view state properties but I am not able to access and apply the right matrix.

It is possible to supply your own projectionMatrix as part of the view state. I have not tried it but it's probably something like map.transform.projMatrix.

In the long term the easiest solution is to make a feature request for deck.gl to support center offset out of the box.