From complex topographic map to mesh

Support Modeling
1

Hello there,
Sorry if the solution already exists but I’ve been struggling on this one for hours and nothing I tested proved to work.

So, I have a bunch of topographic level curves from a DWG file ( I converted it to DXF and imported it to Blender). I converted that to a mesh in order to put a skin on it, following the curves.

Capture courbes de niveau
Capture courbes de niveau1225×852 448 KB

First I tried to use Bridge Edge Loops, which isn’t accurate at all and lacks settings so I can adjust it as I want. I also tried a script called Point Cloud Skinner, also not very efficient.

I would like to try and use a vertical displace modifier on a plane to reach the curves point by point, or maybe a method with a boolean… but I’m stuck. How would you proceed ?

2

You can try this quick and dirty trick and use a skin and remesh modifier, and tweak the values vertex radius and resolution.

skin_remesh_hack
skin_remesh_hack1920×1017 185 KB

2 Likes
3

It would be some work, but if you enable Curve Tools addon ( included) you can use the Loft function between curves…

image
image1141×626 71.4 KB

It might need to have the same amount of vertices between each loft set though, so check the Docs and see…

1 Like
4

It looks like you need surface reconstruction for this, try MeshLab.
https://www.meshlab.net/

2 Likes
5

You may even look into BlenderGIS ??

1 Like
6

I think you are right…I always forget about Meshlab, as I find it a challenging program to work with… but a bit of trial and error should get it!

Nice of you to step in !
Happy Blending!

7

even with the GIS add on
depends how many verts you got but it can take time to complete the face filling !
so be patient !

good luck
happy bl

8

Possibly something like in this post from yesterday…

It is unfinished work, but the poster says they will be sharing the final result for free. Try communicating with the OP.