That looks cool and all but it only generates Slavic or old English style towns. What I mean by that is it doesn't generate German style towns, where the central square is actually square with a grid going out from there to the walls.
You can see this effect in towns of German design such as Wroclaw (formerly Bresslau), Krakow (the town was rebuilt by German planners and settled by Germanic craftsmen), Pilsen, etc.
Were triangular buildings really common in medieval towns? It seems like the generator maps out an area then bisects it with lines at odd angles, leading to some pretty strange looking houses. The castles also have some pretty unusual looking features.
There were actually some odd shaped houses in medieval times due to strange laws about the square footage of the base of the house and the window count, etc... So many times while building these houses they would create interesting awnings and overhangs in multiple directions many stories up to avoid these taxation rules. This lead to many interesting and strange looking houses.
From what I remember, oddly shaped houses were actually pretty common. Remember that most cities didn't have central planning so you'd just get a plot and build something that matched.
You can see this effect in towns of German design such as Wroclaw (formerly Bresslau), Krakow (the town was rebuilt by German planners and settled by Germanic craftsmen), Pilsen, etc.