I wonder how procedural it is - and really what procedural is. Is it that, at some scale, say apartment in a building, there is a polygone'd model - the apartme

I wonder how procedural it is - and really what procedural is. Is it that, at some scale, say apartment in a building, there is a polygone'd model - the apartment - and an apartment is only generated and rendered (with some randomness) when you enter it ?