algorithmic modeling for Rhino

Daniel Piker
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Daniel Piker's Discussions

xml comments in referenced dll - intellisense in scripting components
1 Reply

Started this discussion. Last reply by David Rutten Jul 31, 2013.

'Offset on Srf' strange behaviour
3 Replies

Started this discussion. Last reply by Tom Jankowski Apr 24, 2016.

Random numbers aren't...
1 Reply

Started this discussion. Last reply by Robert Vier Dec 27, 2012.


Daniel Piker's Page

Latest Activity

Omar Elnagar commented on Daniel Piker's blog post Kangaroo 2.0 - Now out of the pouch and available for testing!
"Hi, I have been working on a research project regarding gridshells, so mainly I used kangaroo 2. I am confused however what the strength of lets say the 'Line' or 'Plastic Lenght' component represents. In other words, do…"
5 hours ago
Giulio Piacentino replied to Daniel Piker's discussion Child faces grouped by parent - script in the group Weaverbird - Topological Mesh Editor
"Thanks for posting this definition, Daniel. - Giulio"
12 hours ago
Eugenia Rosado Maria liked Daniel Piker's photo
18 hours ago
Daniel Piker replied to riccardo foschi's discussion Kangaroo working in the group Kangaroo
"Hi Riccardo, The solver in versions of Kangaroo before 2.0 was fairly standard dynamic relaxation (along the lines described eg by M.R. Barnes in his thesis). In Kangaroo 2.0 and later the solver method is still similar to dynamic relaxation,…"
Lorenzo Greco liked Daniel Piker's video
Daniel Piker added a discussion to the group Weaverbird - Topological Mesh Editor

Child faces grouped by parent - script

I was using Loop subdivision, and needed to access groups of faces in the subdivided mesh according to the face in the original mesh they descended from, so I made a simple little script making use of the way Weaverbird orders its output to extract this. I'm sharing it here in case anyone else finds it useful:It takes as input…See More
Daniel Piker replied to Ol OneEye's discussion 'tiling' a blob
"I'm not sure the results you get by searching for tiling will be most helpful here. That image looks more like an example of distribution of points on a surface, which is in some ways an easier challenge, since you don't need to worry…"
Mar 16
Jessica Ma replied to Daniel Piker's discussion New origami example in the group Kangaroo
"I am getting a message saying that the force does not have output. Could someone help with that :P"
Mar 15
Maria replied to Daniel Piker's discussion New origami example in the group Kangaroo
"Hello, Great, that is very cool! I am trying to create a mesh of flat folding pattern (as the one in the definition Origami_simplified). However, my objective is to be able to change the size of the single triangle after. (I dont really need to…"
Mar 14
Daniel Piker replied to Mark Bronson's discussion Debugging custom K2 goals
"Hi Mark, I realise it probably isn't as useful as being able to actually step through custom goal code like normal debugging, but here's something I sometimes find useful for testing and development. It lets you input some goals and then…"
Mar 13
Daniel Piker liked Laurent Delrieu's photo
Mar 13
Daniel Piker replied to Enda Scott's discussion Pull mesh to curve in the group Kangaroo
"Hi Enda, Thanks - that is more clear now. Finding a developable strip through a given curve should be possible, either with Kangaroo or through geometric construction. However, I think in general it will not be possible for this developable strip to…"
Mar 13
Daniel Piker replied to Enda Scott's discussion Pull mesh to curve in the group Kangaroo
"Hi Enda, What is the intended end result here? There are multiple instances of the Kangaroo solver in one definition, which I would generally avoid where possible, and it is often possible to combine the goals into a single simulation. Even in…"
Mar 13
Jon commented on Daniel Piker's video

Leap Motion Kangaroo tests

"Hi Andy, I saw a component in firefly called Leap Finger Tracker. I was wondering if this one works for the newest Leap-Motion Controller? Or there is another component told 'Leap-to-Grasshopper' I need to install?"
Mar 10
Daniel Piker liked Mateusz Zwierzycki's photo
Mar 6
Timothy Tai commented on Daniel Piker's blog post MeshMachine update
"Hi All, Might there be an example of dynamic remshing based on an image (as a map) For example, on a b/w image and the mesh density is based on the brightness? Thanks a lot!"
Mar 4

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Daniel Piker's Blog

Animated gif encoding within grasshopper

Despite the age of the format, gifs remain a popular and very widely supported way to share small animations. The…


Posted on March 24, 2016 at 12:00pm — 9 Comments

Kangaroo 2.0 - Now out of the pouch and available for testing!

A few days ago I uploaded the first public work-in-progress version of the new Kangaroo (

I'm really excited to share this new release - which makes Kangaroo significantly more powerful and flexible.…


Posted on March 22, 2015 at 12:30pm — 14 Comments

Aether – simple speedy spatial fields for Grasshopper

Spatially varying fields, which associate a value (such as a number or a vector) to every point in space, have a wide…


Posted on December 16, 2014 at 8:01am — 35 Comments

Kangaroo wins at 1st ALGODeQ competition

ALGODeQ is an international competition for algorithmic design programs, held for the first time this year.

There were 190 entries from 43 countries, judged by a large panel of professors and practitioners from around the world, in a multi-stage process.

The original intent of the organisers had been to award a single Grand-Prix, with an award of 1 million Yen, but during the judging process it was decided to award multiple highest prizes in 3 separate categories.

It is a… Continue

Posted on November 4, 2014 at 1:18am — 46 Comments

MeshMachine update

A minor update to the remeshing component (read about the earlier release here)

This adds the option to also scale the triangle size by distance from the boundaries:…


Posted on June 9, 2014 at 4:30pm — 47 Comments

Comment Wall (37 comments)

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At 5:27am on February 15, 2017, zaidoon said…

Thank you Daniel for your efforts

At 8:04am on October 10, 2016, Arpan Bakshi said…

GhPython Workshop coming up this month. Tool developer Chris Mackey is teaching a live webinar titled - Making Your Own Python Components. More information and registration at

At 5:54pm on May 20, 2016, SEAN TITTLE said…

Hi Daniel, 

I am having trouble turning a surface/mesh into a series of equal equilateral triangles.

I downloaded the latest Kangaroo but unfortunately some of the toggles have changed and whenever I open a script from these forums there are parts missing.

Can you provide me with some assistance? 

Thanks in advance!


At 12:57am on February 12, 2015, Levin said…

Hi, Danil. I saw a video on vimeo that's named "Grabbing interaction & adding elements". I'm curious what's the Screen capture software?

At 9:18am on December 30, 2014, rhinograsshopper2014 said…

Saludos de ecuador porfavor brindame ayuda deseo desarrollar window 500lux ayudame con informacion explicacion desarrollo cualquier ayuda es bienvenida gracias


Greetings from Ecuador brindame please help develop desire window 500lux help me with information explanation developing any help is welcome thanks

At 8:52am on December 13, 2014, Yadid Hadad said…

Hi Daniel, it seems to be like there is no working download lonk for you gH plugin Jellyfish.... Can u share it with me please?


At 8:04pm on May 20, 2014, reaction~~ said…

Hi Daniel~~

if you don't mind asking, how to install plankton~ i have same problem with kris leese.



At 3:36am on May 7, 2014, Elisabeth Puscher said…

hi daniel,

I have saved the file with internalized mesh, I hope you can open it now.

yes, i think these crossing-over problems on the pictures might be related on the scale factor of the edges.

however, if i coose a smaller scaling factor, i don't have this problems, but then the max deviation from the offset is very big.

Is there another way to get a better result for the offset?

thank you,


At 2:05am on May 5, 2014, Elisabeth Puscher said…

Hi daniel,

i have some questions about the reciprocal component and the optimization for tangency with kangaroo.

I found your example definition, but it doesn't work with my gemometry.

I want to create a reciprocal structure with an offset of 10cm (=rod diameter)

Can you explain, how the scale factor for the reciprocal component influences the quality of the result for the offset?

If i choose a small scale factor (e.g. 1.20), the max. deviation from the offset is veriy big. (9,8 cm)

If i choose a larger scale facotr (e.g. 2.00), the max. deviation from the offset is much smaller and better. (0,04 cm)

But then some points occure which are geometrically not possible. (see figure below)

Do you have any suggestions how to avoid this and to get better results?

Maybe you can have a look at my GH definition:

Thank you!!


At 9:58am on May 3, 2014, bianca cattozzo said…

Hi Daniel,

I`ve started to use grasshoper one week ago and I want to ask you about your reciprocal force`s diagram. How did you do it?



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