Making Movie-Like Scenes In A Stage Play Using Camera Obscuras

A "camera obscura" is basically an optical device of the ancient past that would basically project a bright scene onto a dark background. While this video talks about a camera obscura being used as a drawing tool, there are also camera obscuras constructed onto buildings, and I realized that in a stage play, it would be theoretically possible to have scenes that are "shot and composed" in a quite similar way to a movie, but the difference is that everything is performed live, using camera obscuras that project scenes from brightly light stage sets outside the room, onto the actual darkened theatre where the audience watches, but it would be a matter of figuring out how to change the angles of an individual camera obscura without ruining the projection, and also being able to find a way "cut" to different camera obscuras to immediately project a different view. Of course, the easy answer now would be to "just use digital", but there's also concerns about global warming and such. https://www.youtube.com/watch?v=HwqemdN9zac

Using A Camera Obscura For "Windowed" Scenes:

I realized that a camera obscura could be a good way to film a elaborate driving scene that takes place in a made up location, like a fantasy or sci-fi type world, a past version of the "real world" for a historical drama that takes place IN THE 90'S BECAUSE YOUR CHILDHOOD IS OVER, or simply an enhanced version of California doubling because you want to film a big drama set in Hawaii but you refuse to stop filming in a place that's so cold that even HELL would freeze over such as Vancouver, Canada or Toronto, Canada, by simply making a big miniature set and projecting it live and without electricity by sliding a camera obscura as part of a poor man's process driving scene. Because you would be such a poor man to try to film the whole of Pulp Fiction in Vancouver. https://www.youtube.com/watch?v=ANX_cYnabmE

Moving Film Sets: