algorithmic modeling for Rhino

Daniel Piker
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Daniel Piker's Groups

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, 2015.

Random numbers aren't...
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Started this discussion. Last reply by Robert Vier Dec 27, 2012.


Daniel Piker's Page

Latest Activity

Daniel Piker replied to Petras Vestartas's discussion C# Mover Trails + Kangaroo2
"This is the AssignPIndex funtion: /// <summary> /// Compare the PPositions of the Goal to the positions of the particles in the system, /// add new particles to the system if there is nothing there already, /// and assign the appropriate…"
1 hour ago
Daniel Piker replied to Petras Vestartas's discussion C# Mover Trails + Kangaroo2
"Hi Petras, Yes - that's the idea. Kangaroo maintains a list of particles, and each Goal object has an array of integer indices saying which of these particles it acts on (its PIndex[]). There are two different ways of managing this indexing -…"
1 hour ago
Daniel Piker replied to Pancho Cedron's discussion Divide a curve into linear segments of equal length
"Segments equal to 12 decimal places, solved in a few milliseconds :)"
Daniel Piker is attending Anders Holden Deleuran's event

sg2016: Calibrated Modelling of Form-Active Hybrid Structures at Chalmers University of Technology, Gothenburg, Sweden

April 4, 2016 to April 9, 2016
One week left to apply for SmartGeometry 2016 clusters! If you're into Kangaroo2-ing and hybrid structures you should come join our team. Which, in addition to Gregory Quinn and Anders Holden Deleuran, consists of…See More
Nik Willmore replied to Daniel Piker's discussion Dynamic remeshing script with Plankton and Kangaroo in the group Plankton
Daniel Piker replied to Petras Vestartas's discussion C# Mover Trails + Kangaroo2
"Hi Petras - Interesting definition! I think it would probably be faster to actually call the Kangaroo library from within the same C# script you are using to add the elements. Have a look at the scripting examples in the Kangaroo download…"
Daniel Piker replied to Olivier Suire's discussion Some fixed vertices ignored by MeshMachine
"Hi Olivier, This collapsing of skinny faces is exactly what MeshMachine is designed to do. More specifically, whenever the length of an edge is less than a certain threshold, that edge is 'collapsed', removing the two faces that were…"
Joaquim Filipe Reis liked Daniel Piker's video
Moonbeast liked Daniel Piker's video
ndy_123 replied to Daniel Piker's discussion New origami example in the group Kangaroo
"applied the script for quad skewed panels but always tilted when skewing despite I applied anchor points.. If anyone know how to fix the tilting"
Jeffrey Boyer liked Daniel Piker's video
Feb 1
Jeffrey Boyer commented on Daniel Piker's video

PQ Circular mesh in Kangaroo

"Hi Daniel, Super interesting work. I'm curious if there is a way to deform the surface at points within the circles which could vary the diameter with your spring-particle solver? I'm thinking this could allow "pressure" to be…"
Feb 1
Daniel Piker replied to vladimir ondejcik's discussion Does not load in the group MetaHopper
"I think it is, but some other plugins will only load with it turned off. What you describe below with the per-plugin setting sounds like the best solution, thanks."
Jan 27
Daniel Piker replied to vladimir ondejcik's discussion Does not load in the group MetaHopper
"I found it would only load if I turn COFF loading on. (type GrasshopperDeveloperSettings from the Rhino command line to change this)"
Jan 26
Rémy liked Daniel Piker's video
Jan 25
ZHANG Yan - popabczhang liked Daniel Piker's video
Jan 25

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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 — 13 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 — 34 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 — 46 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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