algorithmic modeling for Rhino



Kangaroo is a Live Physics engine for interactive simulation, optimization and form-finding directly within Grasshopper.

Read about the new release here

The Discussion Forum below is the best place to ask any questions about using Kangaroo.

(Please avoid posting questions on the Comment Wall, as it does not allow organization of replies)

Members: 2644
Latest Activity: 21 hours ago

You can read an introduction to the ideas behind Kangaroo here:

Kangaroo2 is now available for testing (see full announcement here). Please bear in mind this is still a work-in-progress, and features are still subject to change.

You can download it from here:

This thread contains some troubleshooting tips if you have problems getting it installed and working:

The main source of example files for the latest version is here:

Some further example files for version 2.0 can be found here:

with more to follow - if there is some particular feature you would like more examples of information on please ask there.

The Kangaroo2 solver library is now separate from the Grasshopper components, and can also be referenced and used in scripts, either in the GH VB/C#/Python components, or in RhinoScript/PythonScript in Rhino. Questions about these can also be posted on:

Kangaroo2 is a complete rewrite, and the main solver/goal/force components are not cross-compatible with the previous version. However, you can keep both versions installed together allowing older definitions to be opened, and for now this is recommended, as there are also several utility and mesh processing functions relevant to both versions.

While v2 introduces many new features and improvements, not all the features from the old version currently have equivalents in the new version, but the plan is to add them all over time.

The links below are for the old version. More documentation and videos for the new version to appear soon.

example files(for version 0.099):

manual(for version 0.099):

getting started video:

demo videos:

Some more tutorial videos from EXLAB:

Discussion Forum

New origami example 54 Replies

Origami_simplified.ghThis example shows the use of the new user object…Continue

Started by Daniel Piker. Last reply by Roshun Shaun Ayus 21 hours ago.

Reciprocal structures - example definition 27 Replies

The latest release of Kangaroo contains several new features for…Continue

Tags: plankton, kangaroo, reciprocal

Started by Daniel Piker. Last reply by Torkild Helland Kleppe Dec 8.

Units (mass & force) 12 Replies

Hi all, I'm pretty new to Kangaroo and I'm trying to work out how various objects and structures respond to differnernt forces, mainly unary force for gravity and some spring stuff within the structures. I was wondering if there is a unit kangaroo…Continue

Tags: newbie, force, mass, Units

Started by Rupert Todd. Last reply by zooid Dec 5.

How to find current forces applied to particles 3 Replies

When a system has goals still trying to move particles, but has reached equilibrium, I'd like to gather information about what forces are being applied on each particle by each goal. Is there a way to query the solver for this? I imagine it's right…Continue

Started by Cory. Last reply by Daniel Piker Dec 4.

Kangaroo 2 70 Replies

Hello Daniel i have downloaded and installed Kangaroo 2 but i cant interact with the rhino viewport, i have installed rhino 5 64 sr11, both files are unlocked, do you have any idea why this happens?Continue

Started by dvdrbls. Last reply by paul piciorul Dec 4.

Prestressed structure analysis. Define tension and compression. 1 Reply

Hi everyone,I just wanted to share a definition that I made with Kangaroo. Its goal is to define wich elements are in tension or in compression in a prestressed structure. It also check if the structure is stable.I use it to design tensegrity…Continue

Tags: constant, component, tensegrity, compression, tension

Started by Ludovic Regnault. Last reply by Andrew Steele Dec 2.

News and Updates

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Comment Wall


You need to be a member of Kangaroo to add comments!

Comment by Mostafa Abd-El-Raouf Ahmed on November 29, 2017 at 12:22am
Guys i am new to kangaroo and kindda amateur too in grasshopper .. so i have a question .. how can i achieve a smooth mass to conform on two closed curves

My curves here :
And a simple loft is here to just see what I intend to do
Comment by Michael Pryor on November 28, 2017 at 7:06pm

@Valmir Kastrati  it is called "Length(Line)" in K2

Comment by Valmir Kastrati on November 28, 2017 at 4:52pm

Can anyone tell me which component in Kangaroo2 is "Springs" from Kangaroo 1?

Comment by weizhiwei on November 23, 2017 at 9:37am

Hi all, I'm a really new grasshopper user, These days I have learned how to use Kangaroo2 to solve a problem.

But I have some trouble with the component "PolygonArea".

Comment by Philippe Hannequart on November 17, 2017 at 3:10am

Hi all, How can I model a shell in Kangaroo2 ? The triangular shell element from Kangaroo1 disappeared?

Comment by Jupiterator on October 29, 2017 at 5:27pm

Hi Daniel,

Is the version of Kangaroo for OSX different than Windows?

I'm looking for the SpringsFromMesh component I've seen in a tutorial, but I can't find it anywhere.

Any help would be greatly appreciated!

Comment by Martin Siegrist on September 1, 2017 at 6:53am
Hi Daniel, I spent the last ten hours trying to remember how to use the SolidPointCollide component. I need to hang a relaxed mesh inside another mesh. Too much to explain. Well, I figured it out at some point.... now it works pretty well.

Just wanted to say thank you for programming such an awesome set of tools!
Comment by Earth on July 22, 2017 at 4:32pm

Hi all, where does Kangaroo define literally the mass of springs? The thing is, when using Kangaroo, there is no mass input, and  if I applied force=0 then displaced the support, why the structure vibrates when there is no mass defined anywhere?

The second thing is that, when I applied very high value of stiffness, with proper support conditions, the elements fly off to there screen (displacement=infinity=null), even if there is no force applied, anyone know why?

help :)

Comment by Grazia Pota on May 7, 2017 at 4:29am

Hi everyone, I've a simple question. Is there an equival component for PowerLaw in Kangaroo 2?

Comment by Will Pearson on February 6, 2017 at 8:49am

Hi AJ, can you describe in what way the grab component is not working? The more detail you can provide, the more help you'll get! What version of Kangaroo are you using? What error messages (if any) are you getting when trying to use the grab component?




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