Here an example a customer requested us. The idea was to start selling houses before the construction and allow the future home owners to figure out the view and blocked view areas of the surroundings when all the houses are complete.
To do this assignment we created 2 sets of panoramas from each of the 23 positions using the exact x/y/z coordinates:
1.- the first set from standard pictures based panoramas ("virtual reality")
2.- the second set was done creating 3D renders from the exact same x/y/z positions ("virtual virtuality")
...then, we combined the renders with the real background scene.... In this way, the future home owners are able to check the viewable and blocked areas of the scene from each house.
See the example here --> http://www.360panotours.com/HCH/HCH.html