I found a video showing a ceiling light diffuser, it seems to give good results. her’s a link to their website : http://en.barrisol.com/lighting-stretch-ceiling.htm
https://www.youtube.com/watch?v=eXIpiZoHvLU
Amazeballs. Thanks for sharing.
Looking at the video… has anyone done any matrix coding to simulate a sky - clouds, day turning into night, etc?