Shadowing a mesh with a curve

[amsarse]

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)

[jessesn (Jessesn Chen)]

@amsarse

After some change it refused to work at all. I want it to accept one mesh and multiple curves (open or closed).

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

[amsarse]

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.

[René_Corella]

@amsarse

I need one mesh that does not contain all the faces shadowed.

Use ‘cull faces’?

[jessesn (Jessesn Chen)]

@amsarse

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.

Is this what you wanted?

CurveOpenShadowMesh.gh (36.0 KB)

[amsarse]

Thank you. It works perfectly. I added the NOT component to bake both parts of the split mesh. However it works only on a plane. I need to project it onto a topographic model (different Z’s).
(The green lines are projected directly in Rhino 6). What is the fastest way to shadow also these parts of the model that are not level 0? It is better to avoid using surfaces because my topo models are highly irregular. .gh file and a screenshot attached.

CurveOpenShadowMesh2.gh (24.2 KB)

[jessesn (Jessesn Chen)]

@amsarse

However it works only on a plane. I need to project it onto a topographic model (different Z’s).
(The green lines are projected directly in Rhino 6). What is the fastest way to shadow also these parts of the model that are not level 0? It is better to avoid using surfaces because my topo models are highly irregular. .gh file and a screenshot attached.

You can ahieve it via project the curve to the topographic model.

[amsarse]

There is direct way of doing it. Thanks.