I have a question regarding making road networks from features/vertices of an existing 3d model (.obj file). I was given a .obj file of a couple town block that includes many individual objects. I've attached a sample view of this .obj file. I would like to group the vertices that describe the road surface into a single "road surface" layer that I can then use in visibility analysis.
I have searched through the CityEngine tutorials for making road networks, but I have not found a way to create a road network out of existing vertices/vertexes.
I'd appreciate any information or recommendations you might have.
Edit: I forgot to add that I've done a quick, but not very accurate, version of this where I made a polygon defining the road edges, and I then applied a rule file where I made a very short building (.25 meters high) to raise this polygon above the vertexes of the "true" road surface. This is an idea I had and I recognize that it is likely not the best way to do this. Please see additional attached image. Thanks!
Anyone have any thoughts about this, or performed something similar?
Anyone have any thoughts on this?