Unfolding a diagrid

I'm thinking of scripting a thing that unfolds a diagrid tube, such that it could be strips for laser cutting. The image below is something similar done by hand.

Anyone have experience?

I'm using a VB component written by Giulio Piacentino called newDiagonalsVB to aid this process.

Replies to This Discussion

Permalink Reply by Andrew Heumann on March 26, 2011 at 4:39am

Here's a definition I've been working on to do something similar. It doesn't incorporate tabs like yours, but something like that shouldn't be too hard to add.

Attachments:

triangulated_surface_strip_tool.ghx, 2.8 MB

Permalink Reply by Victor Leung on March 29, 2011 at 10:31am

Dear Andrew,

Thank you so much for sharing, I have some similar concept of mass adding the transforms together, despite I find it pretty frustrating to sort out the list managements, yours is a really nice work.

I have a much more complicated situation, first: my edges are not triangles, but in part of the diagrid as well.

I'll try adapt. Tell you the result later. tks again.

Cheers

Victor

Permalink Reply by Victor Leung on April 5, 2011 at 12:40pm

Dear Andrew and all,

I have made some test piece that combined my logic of assembly and your unfolding technique, the result is pretty promising, you can follow the story here. I'll post a more comprehensive report later.

The script you shared is really helpful.

Cheers

Victor

Permalink Reply by Alon Shavit on December 11, 2016 at 2:44am

Hi Victor! I'm trying to creat a double curvature object, very similiar to the ones you presented on your website, I found your method fascinating and super effective!

I managed building a code that divides the surface into a pretty well orginized diagrid but i'm having a super hard time unfolding the geometry as you propose to two overlapping sets of strips.

could you enlightening me on this subject? is your code available on your website? I couldn't find it.

Thank you very much for sharing your work, it helped me very much!

Alon

Permalink Reply by Victor Leung on December 12, 2016 at 3:20am

Hi Alon,

It was a very old and messy script. Couldn't find it + Doesn't work anymore due to version change.

If you look at Andrew's upload, my script had something that looks similar. It is based on a compound transformation to (rotate3D) each neighboring triangle method.

Permalink Reply by Alon Shavit on December 12, 2016 at 3:25am

Ok sure thing, i'll try it!

thank you!

looking forward to seeing more of your work.

RSS