If you want to have a fully parametric swimming pool, you can try this Revit Family.
Formats included: .rfa, .fbx
Fbx formats are included in 3 variations for closed, half open or open roof model.
Revit Family is created to be fully adjustable, so you can now fit your pool anywhere you want.
Things you are able to change, you can see in jpgs, like: Height, Width, Depth, Material for everything. You can even move roof from close position to open with just one parameter as you can see.
Family is Face based so you need just to import family to model and you are done, opening and walls for pools are included.
It's absolutely easy to change everything you want, so it will fit everywhere according your ideas.
Thank you for your time and i hope you'll like it. :)