hmmm ST_StraightSkeleton() … what to do with it? :)

http://opensciencemap.org/~jeff/test/#scale=17,rot=326,tilt=57,lat=48.855,lon=2.312

I should mention that the large building complex ‘Hôtel des Invalides’ is only one multipolygon tagged with roof:shape=hipped and CGAL takes 15 seconds to compute the skeleton for it.

More about new PostGIS 3D features http://vimeo.com/74869530