It's great to see this improvement, and read about the development. The one issue that stuck out is that there is not enough (any?) "ease-in/ease-out" to the animation as it transitions from zooming to zooming and rotating. Ideally this would be much more continuous. The Anchorage example is jarring as it switches from one type of zoom to the other. As an observer, I should not be able to say "here's the moment where it changes".

This is really cool!

One issue I noticed though is that if you use gestures to zoom on a touch pad, then you'll end up in the wrong spot.

For instance, I put my cursor on Sydney with a Lambert projection and pinch to zoom. As I pinch in, my cursor moves away from Sydney as the map rotates, so the centre of the map ends up at some other place.

Ideally, it should cache the geographic coordinates of the cursor at the start of the pinch gesture and zoom around that till it receives a non-pinch input.

I'm curious how it would work out if you updated the projection center to match the view center in zoomed out maps?

I can see a value in having a "stable" map that doesn't twist around as you move, but I think that would offer a good alternative for people trying to look at places that suffer from the traditional projection centers, and of course different trade offs make sense for different circumstance.

But perhaps constantly reprojecting is too expensive?

I guess this is more a feature request than a question - but do you have plans to support stenographic projections as well? I ask as I work for an Arctic/Antarctic research institute so most projections are unsuitable.

All I can say is this is really fucking impressive. When I played with the demo my jaw dropped. Amazing work!

Is this ever coming to leaflet? Is adaptive projections something that can be done without WebGL?

Are there live demos that could be embedded instead of (or in addition to) the animated gifs?

I just wanted to say that I loved the bloopers at the end.

When is this feature coming to an app near me?