I’m working on a site 3D with a non-planar topology, which needs to be kept precise. Practically it’s a part of NY, I already have buildings, but what I need to do is place pavements (sidewalks). I have a plan of placement of pavements, and the terrain is made as polysurface. I also made a mesh of it.
What I’m trying to do is project the curves forming pavements from plan to the terrain mesh or polysurface, and then extrude them, but they do not extrude as closed solids, even with solid-Yes.
I assume it’s due to complex topology of the terrain, but I see no other way to make pavements, because the selected area of the city is rather big (5-6 km square), and thus the pavements are many.
I would be very happy to receive a suggestion/hint on how to deal with this problem, or how to generally make pavements and roads on a complex terrain.
I can’t add a file because it’s very heavy, but I’m adding screenshots.
dont use project, extrude the planar curves as solids and boolean split them for example with the terrain. that also depends if you actually need solids afterwards or if its just a 3d representation.
if you go down that road with project, then you could use patch for each projected curve. but that way it might be quite a lot more work since you would have to patch each warped curve manually if not using grasshopper or a script. to offset it you could extrude or offset the surface.
I see the topo is a mesh rather than a surface. You could maybe make that topo into a single surface, with all contours and bumps, and then use flow along surface. You would need:
the contoured topo
flattened version of the topo (Set Pt, z, for the surface)
