Comments on: Knitting patterns on a surface in Grasshopper

By: donkeypunch

donkeypunch — Tue, 14 Jun 2011 19:33:53 +0000

Thank you. The work you do is incredible.

By: Giulio Piacentino

Giulio Piacentino — Thu, 19 May 2011 21:58:54 +0000

Hi Matt, those points are just referenced by coordinates in Rhino (meaning they do not reference an ID, I just drew the logic there). HIH, – Giulio

By: Matt

Matt — Sun, 15 May 2011 19:09:44 +0000

Hi Giulio,
I’m relatively new to GH and don’t quite understand where the points (P input) come from that create initial surface definition. Are they the points that are defining the pattern curves? In other words, how is the S input of the surface morph created? Thanks a lot! I love the definition.

By: Doug

Doug — Tue, 28 Dec 2010 07:45:57 +0000

Beautiful, parametric piece.

By: spatial gradients» Blog Archive » stacking

spatial gradients» Blog Archive » stacking — Mon, 23 Aug 2010 14:25:51 +0000

[...] knitting patterns – giulio piacentino [...]

By: siavash

siavash — Sat, 14 Aug 2010 20:42:44 +0000

tanks it helped me alot

By: Grasshopper | Rumstudion

Grasshopper | Rumstudion — Wed, 02 Jun 2010 09:00:01 +0000

[...] jag på en spännande kurs i Grasshopper som arrangerades av Digitalform i Stockholm. Kursledare Giulio Piacentino från McNeel i Barcelona. Mycket inspirerande! 02.06.2010 | Kategori: [...]

By: Johan

Johan — Fri, 14 May 2010 19:33:51 +0000

studio prix ;) the “braiding” you see in the landscape is actually manually done in maya, so the next move would be doing it parametrically correct in GH :)

thanks for the reply – will give it some effort over the weekend and hopefully show what i come up with.

- johan

By: Giulio Piacentino

Giulio Piacentino — Fri, 14 May 2010 17:46:26 +0000

Hi Johan, the rebuild script is there because this definition is a bit old already, and at that time there was no “native” Gh curve rebuilding component. Adding to that, the piping was a bit less robust back then, so it would now and then fail. In the newer Grasshopper the script is not necessary any longer (try replacing the piping component and you’ll see it has more options now).
Variating the Z interval is actually difficult… the curves do not coincide any longer if two adjacent intervals are not the same, or extreme care is used in choosing these intervals and positioning the curves. There might be a couple of working cases I guess, but only with curves, points and single surfaces.
Thanks for linking to your work: it looks great (and somehow “Angewandte”? :) ).
- Giulio

By: Johan

Johan — Fri, 14 May 2010 10:35:44 +0000

hey, i really love the definition! i’m working on a similar issue on my school project and this really was an eyeopener!
there is only one thing i don’t get. What’s the purpose of the C# rebuilding script in the end – can i skip it? because if i try to offset the outcome line instead of piping, i noticed, that gh does not offset the whole line, at one end of the original line the offset is missing, but if i offset the lines before applying the C# script, it works just fine and the offset really matches the original!
so my question would be – is it really neccessary to apply the script if i’m not piping but offsetting and later on lofting… Can you explain the script?

and another question : how would you change the issue of all the knots having the same height – i see they are controlled by Z interval. Is it possible to somehow variate this interval – perhaps whit a guideline curve on the surface i morph on? any suggestions ?

just to give a taste what im working on:

http://s3.amazonaws.com/data.tumblr.com/tumblr_kx4lnvK4S71qb13sio1_1280.jpg?AWSAccessKeyId=0RYTHV9YYQ4W5Q3HQMG2&Expires=1273919699&Signature=f4CJzm0YXUmGq7gfvygX%2FIl4fnc%3D

Johan
Vienna, Austria

By: Giulio Piacentino

Giulio Piacentino — Thu, 13 May 2010 18:38:26 +0000

Hi Marishk, thank you. I think it’s necessary to see a little sketch or examples to understand what you are trying to do… Have you thought about maybe opening a discussion on http://www.grasshopper3d.com ?

By: marishk

marishk — Thu, 13 May 2010 10:05:43 +0000

Beautiful!
I do have a question, I am trying to populate a surface with a non square base in a chain , but my definition is using a box, so i cannot intersect my components. I want to have a chain like yours but generated with my individual component, how can i make it?
thanks for sharing!!

By: S. A

S. A — Fri, 06 Nov 2009 23:10:08 +0000

Thanks a lot man. As Walter Sobchak once said, the beauty of it is in the simplicity.

By: J.L

J.L — Fri, 06 Nov 2009 01:33:30 +0000

That’s gorgeous. Thank you for sharing.

By: R2112

R2112 — Sun, 16 Aug 2009 08:31:50 +0000

nice one…

By: Jess In

Jess In — Tue, 11 Aug 2009 17:14:52 +0000

oh wow, this is definition is deliciously elegant… I tried scripting a crochet pattern a few weeks ago but mine’s so primitive by comparison! Thanks so much for sharing