How can I create a surface/mesh to wrap this mesh, as close as possible?

[w.wu]

Hi everyone,

I tried to wrap this mesh using a surface (should like a cylinder, the whole outer “shape” of the mesh), but I can noly created the points representing the mesh, then I can’t create the surface further.

Any idea and suggestions are appreciated!!

wrap.gh (2.3 KB) wrap-v5.3dm (569.4 KB)

[anon39580149]

This is not a solution but an idea to find the curved polyline and create the surface using sweep
maybe you need remove some lines manually or find a solution to do that with grasshopper

wrap 2.gh (12.2 KB)

[w.wu]

Thank you so much Seghier!

I am sorry I was not clear for my idea. What I what is the cover the whole shape, not follow the lines.

Thank you again for your idea!

[laurent_delrieu]

So the only thing you have to do is use a search engine and search for shrink wrap and grasshopper
https://www.grasshopper3d.com/m/blogpost?id=2985220%3ABlogPost%3A463107

Shrink Wrap with Kangaroo

Hello,samplewrap.3dm (6.5 MB) [shrink%20wrap%20image] 1.gh (41.5 KB) 2.gh (37.5 KB) I am new to Grasshopper and I am struggling with shrink wrapping object. If someone can help me with this issue, it would be great! Since I do not know how to write my own definition, I found two definitions that gives me the result that looks close but they all still have some problems. In the image I attached, the one on the very left is closest to what I want although I need the edges to be sharper. And th…

[w.wu]

@laurent_delrieu

help me with this issue, it would be great! Since I do not know how to write my own definition, I

Thank you so much Laurent!!
I searched “wrap”, but didn’t find what I expected…
I will try it and let you know soon!

[laurent_delrieu]

For sure it is more easy to find something with adequate keywords, not always easy.
And for sure come back if you have problems with the differents scripts

[anon39580149]

Sorry i don’t understand you , maybe you need to use convex hull and extrude to create surface
if i understand what you want

[laurent_delrieu]

He wants something like that
http://storage.ning.com/topology/rest/1.0/file/get/2654920869?profile=original

Simple (non-physical) Mesh Based Shrink Wrap for Arbitrary Meshes

[w.wu]

Hi, Seghier, that’s a very nice method! However, I need the wrapping close to the mesh as possible.
Laurent provides me a code and I am trying it.
Thank you so much again for your kind help!

[anon39580149]

Thanks Laurent
ok simply use 3D convex hull than remesh the result

[anon39580149]

[w.wu]

Thank you, Seghier!!
That’s exactly what I want.
I am so happy.
I will update you my outcome

[w.wu]

Hi Seghier, how can I create the quad mesh as you show? I can’t find that command…

[w.wu]

Sorry Laurent, after my trying, I can’t run the code successfully. Mine is a mesh and the code starts from a Brep. I tried to change to mesh but the responding time seems too long…
Do you have any suggestions?

[anon39580149]

This is a plugin ; i think is now available in the last rhino 6 wip
the old topic of the standalone plugin removed

[w.wu]

Hi Seghier,

For longer curved structure, it is still not so good…

I want the outer mesh to wrap it like a sausage

Sorry to bother you again and again…

[anon39580149]

You know solutions are not work always; for work like that i prefer use Blender

[w.wu]

You mean the software Blender? I know it’s a powerful one.
I just wanted to finish all the work in Grasshopper: I love it so much (although I am not so good at it)!!
Anyway, thank you again for your suggestion.

[laurent_delrieu]

Here is a tweaked solution, far from perfect. It uses the Daniel Piker script.

shrinkwrap_sharp.gh (1.3 MB)

Shrink Wrap with Kangaroo

[image] shrinkwrap_sharp.gh (24.2 KB) Here’s a go at this with the current Kangaroo, also using MeshEdit to make the convex hull to start with and Weaverbird. It’s still not perfect - edges that are part of the input geometry and the convex hull stay crisp, but it can still end up rounding other edges inside as it shrinks. I’d like to improve this, but I think it will need some slightly different way of finding the collisions, and/or remeshing while shrinking.

[w.wu]

Hi Laurent, I tried the code for longer structure, and the results are like this.

I think it’s quite similar to Seghier’s results.
I may give up…
Anyway, thank you so much, Laurent, I learned a lot from this post.