Here’s a challenge for you smart people …
Is it possible to project a PhotoDome equirectilinear texture onto a ground plane such that it still looks accurate (not distorted) from the camera position and roughly matches / joins up with the PhotoDome at the horizon? Here’s an illustration:
The idea behind this is to “anchor” any 3D objects within the PhotoDome on a ground plane so they can have their own real-time shadows and not look like they’re floating in a PhotoDome (no unrealistic parallax effect).
Here’s a PG https://www.babylonjs-playground.com/#14KRGG#196