Shadowing a mesh with a curve

Hello,
I have a topographic model. I want it to have some faces moved down a little. So I created a workflow included. After some change it refused to work at all. I want it to accept one mesh and multiple curves (open or closed). The faces shadowed by the curves I want to be constructed as “new” mesh and the faces with no shadow - “old” separate mesh. And the original mesh to remove.
CurveOpenShadowMesh.gh (23.2 KB)
test2.3dm (65.4 KB)

It works fine after flattern the Face input data of Construct Mesh

Thanks. It works However it creates separate meshes not containg separate meshes that are shadowed by the separate curves whilst I need one mesh that does not contain all the faces shadowed.

Use ‘cull faces’?

Is this what you wanted?


CurveOpenShadowMesh.gh (36.0 KB)