"Paste" a mesh on another mesh

Hello everybody,

I searched on the forum but I didn’t find what I’m looking for.
I’m trying to “paste” a mesh on another mesh, for example I have an “existing ground” on which I want to add a new mesh, that represent something a road, a retaining wall, etc. to obtain a “finished ground”.
I tried to use a Delaunay Mesh but I need also to tell Grasshopper that there are “breaklines” and that it has to consider also the boundary of the mesh I need to paste:

Thanks for your help!!

Test_Mesh.gh (3.6 MB)

This is one of those head-scratchers - I’ve tried a few things here via MeshRay, Project, ClosestPoint, etc. - adding ‘tolerance’ by offseting by a tiny amount the rectangle you’re projecting to, just to make sure I include the necessary points - however I still get some discrepancies I’m not happy with, plus slowness in the process. I was thinking it’d be best to split the mesh first, with the intersecting box, then take care of displacing/projecting the mesh fragments after splitting. Sorry I can’t help more at the moment.

Are you referring to the mesh pasting being ‘flushed’, or walls being completely vertical as opposed to tapered?

Do you mean something like this?


Test_Mesh.gh (3.3 MB)

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I did this with mesh union too - what about Ngons, though? Should it matter?

It depends what you’re doing with it next.
If you don’t want ngons in the result you can explode then rejoin the mesh.

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Hello René thank you for your help. It depends because sometimes I need the mesh pasting being ‘flushed’ (1) and sometimes I need walls being completely verical (2):

Do you mean something like this?

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Yes exactly. Is it a custom node?

It’s part of an upcoming terrain modelling plugin called Shape. Beta will be released before Christmas.

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Great. Then I’m looking forward to Christmas. :slight_smile:

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Hi, Mariusz. Any update on when this will be released? :slight_smile:

Soon :slight_smile:

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My god, this is like Christmas. I can’t wait :smile: . Landscape grading has really been a thorn in my workflows. It’s really important to have real-time mesh operations.