A terrain, city builder and exporter
Vectiler is a 3d terrain and city mesh builder and exporter. It is supported on Linux, Mac OSX and Windows platforms. the exports include road/terrain and building geometry, see the documentation on github for more details.
the source code and documentation are available under the MIT licence on github.
- Road network with optional extrusion
You can see more of those model exports on my sketchfab account