“Firearm safety” would dictate that you would never point a loaded firearm at someone whom >you didn’t intend to hurt.<
Heck, I wouldn’t even point a firearm at someone “just playing around.”
But I bet that “firearms” are pointed a people all the time on a movie set. That is part of the show.
They do have rules about angles. Camera work is supposed to trick people to think it’s a straight on shut when it really isn’t. Just like with “Hollywood punches” which miss their mark by quite a bit, but at full speed fro the angle its thrown, look like they were a direct hit.