Mesh Lines - Horizontal and Vertical Edges

[_Aka_]

When generating a mesh through shape extrusion in the Curvy Generator, and if you don't want to work with the Unity mesh the Create Mesh module creates, you can get the relevant data from the Volume Mesh module. It has an output called V Mesh, an instance of the CGVMesh class. In it you can find the list of vertices and triangles.
The relevant work happens in BuildVolumeMesh.Refresh().
Each CG module has a On Before Refresh and an On Refresh events.
You can create your own custom CG module if needed: https://curvyeditor.com/documentation/extend/start#extending_curvy_generator