What practical concern lay behind the promotion of longitudinally planned churches in seventeenth-century rome?

The practical concern that lay behind the promotion of longitudinally planned churches in 17th-century Rome is accommodating parishioners. In addition, although some churches constructed for other denominations and even religious accustomed to the Jesuit pattern, some diverged. The oval plan, one of the main contributions of baroque church planning in the seventeenth century was not introduced in Hungary until 1650. The Franciscan monastic church in leka is the first Hungary to be built with something like an oval ground plan. The type originating in Rome in the mid-sixteenth century spread throughout Italy and then across the Alps. The designer of the leka church must have been Italian which has its place in the itinerant community of craftsmen from the Como region who was operational in eastern Austria. He chose as his instant models two Roman churches. Francesco da Volterras S. Giacomo Degli Incurabili and Carlo Rainaldis Sta. Maria Del Monte Santo but simplifies them a longitudinally oriented nave flanked by three chapels on each of the long sides. 

I'm thinking it's the egg beater.

E. hope this : )