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
1 Reply

Started this discussion. Last reply by Lucas Epp Jan 13.

Random numbers aren't...
1 Reply

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


Daniel Piker's Page

Latest Activity

Daniel Piker replied to Juan Alvarez's discussion Soap Film (Membrane Element V2.02) in the group Kangaroo
"Hi. Sorry for not seeing this question earlier. Just increasing the TSmooth strength it seems to work fine. This doesn't look like Costa's surface though..."
7 hours ago
Daniel Piker replied to Jaye O'Dwyer's discussion HELP WITH DEVELOPING A MESH FOR PANELING
"Designing good quad meshes like this takes a bit of practice. Here's one possible way to subdivide a surface like yours: The mesh on the left was made manually using Mesh>PolygonMeshPrimitives>3dFace, then subdivided and relaxed while…"
Daniel Piker replied to WT4's discussion Problem installin Kangaroo
"Are both files definitely unblocked?"
Daniel Piker replied to Verônica Natividade's discussion rotation movement - kangaroo in the group Kangaroo
"Like this:"
Daniel Piker replied to Verônica Natividade's discussion rotation movement - kangaroo in the group Kangaroo
"I think that to simulate this sort of non-slip rolling it may be better to work with the NURBS curves directly without using Kangaroo. You could get a point at the same distance along the 2 curves and move them together, and rotate them so that…"
Daniel Piker replied to Verônica Natividade's discussion rotation movement - kangaroo in the group Kangaroo
"Hi Verônica, Could you internalize the input geometry, so it can be opened without the Rhino file? Also, perhaps a bit more context to what the aim is here? Is this to create an animation, or simulate some mechanical system?"
William Carroll commented on Daniel Piker's video

Kangaroo caterpillar

"can someone point me in the right direction to take advantage of Kangaroo's collision detection capabilities? I have tried searching for some time, but haven't been able to find what I am looking for... I can achieve circle-to-circle…"
William Carroll liked Daniel Piker's profile
Daniel Piker replied to Harri Humppi's discussion Need help for collision between two curves in the group Kangaroo
"Hi Harri, I don't really understand the aim here. Is it to find a polyline tangent to the curve which minimizes the area between the 2? and presumably with a given number of segments?"
Daniel Piker replied to Juan Camps's discussion Need help "relaxing" a grid of diamonds. in the group Kangaroo
"Hi Juan, I see that you are keeping a constant number of diamonds from top to bottom (four and a half). Your surface changes in height, so either the size or number of diamonds have to change too, and relaxation cannot change this! If you…"
Daniel Piker replied to Daniel Piker's discussion New tutorial - Developable strips - Part 2 in the group Kangaroo
"Hi Andrei, It's better if you make a new discussion for this in the Kangaroo group, rather than in the comments here (Please also include the files you are working with)."
Daniel Piker replied to Erik Lander's discussion springs in the group Kangaroo
"Hi Art Agent, Yes - everything looks good here, nice comparison. By the way - the reason for the slight difference between the results is due to the anchors in Kangaroo2 being treated as goals with a default weighting of 1000. If you do want to fix…"
Juan Camps commented on Daniel Piker's group Kangaroo
"Hi All, I have a problem with a surface I'm designing (see screenshot attached). Since the surface height changes, the height subdivisions (V coordinate) of the diamonds make the diamonds irregular. I want the diamonds to be as similar as…"
Agnes Tan liked Daniel Piker's video
Andrew Cole commented on Daniel Piker's video

Mating rigid components

"cannot comprehend. so cool."
Agnes Tan liked Daniel Piker's video

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Daniel Piker's Blog

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 — 11 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 — 32 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 — 45 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 — 26 Comments

New collection of Kangaroo example files

I've updated the examples page for Kangaroo with a zip of over 80 definitions, organized by category, many with explanatory annotations, and covering several popular topics:

Hopefully this saves people some searching around, and makes learning to use it a little easier.

Posted on April 29, 2014 at 5:19pm — 5 Comments

Comment Wall (34 comments)

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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?

At 2:25am on May 22, 2013, peter said…

hi Daniel,

Hi have a propblem loading kangaroo - see error message below.

I did check that I have those to files in the library folder and both are unlocked.

Any ideas what it could be ?

many thanks,


Object: KangarooA (level 1)
Exception has been thrown by the target of an invocation.

Object: KangarooA (level 2)
Could not load file or assembly 'KangarooLib, Version=, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.

At 5:07am on May 14, 2013, Anton Laterra said…

Dear Daniel,


Here is a video on vimeo that you uploaded 2 years ago:


Could you please explain in a few words which forces and how distributed create such a tension between points.

I guesed there are 2 anchor pts on each side. And should be some sort of repulsion going on...

Couldn't make it

thank you

At 10:58am on October 10, 2012, Systemiq said…

Hi Daniel,

your Mand3d with complex number raised to power of 4 instead of 2, perhaps it looks like something too.



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