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: 2799
Latest Activity: yesterday

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

kangaroo planarization (methodology)

Hi,I know it can seems a weird question but I would like to know where I can study the theoretical principles of Kangaroo planarization.I reckon it is about an energy applied on the faces through Non Linear Programming but I would like to…Continue

Started by Marinella Contestabile yesterday.

Kangaroo Inflatable

Hi everybody,I am starting to investigate inflatable shapes using Kangaroo (pressure component).I am not an expert in mesh creation and that's why I would like to ask a few questions.I had a look at the simple example of a cube. Then, I've tried to…Continue

Started by Radis Oct 6.

Difference between Bouncy solver and regular solver in Kagaroo2

Hi all, I have 2 following questions in Kangaroo. Please help me1) I am trying to implement simple tensegrity structure in Kangaroo. I am getting different solution for bouncy solver and regualr solver. Attached my GH file.2) How to define a tension…Continue

Tags: bouncy, solver, members, only, tension

Started by new to gh Oct 3.

Adjusting polygon segments lengths whlie keeping area constant

Hello,I have an estimated polygon of a site area according to some rules and datas that i have. I want to change each length of this polygons segments, while keeping its area contstant as possible. The point is trying to find the polygon with…Continue

Started by Yusuf Reşat Güner Oct 3.

Zombie Kangaroo + Mesh relaxation 6 Replies

Hi all,I am trying to figure out how the zombie component is working. I only want to obtain the outputs from kangaroo to use it for Galapagos (in the end). I am wondering if it is possible to create a mesh relaxation with the zombie component. I…Continue

Started by Stefan Slangen. Last reply by Dallas Swindle Sep 21.


Hi allMaybe I'm doing something wrong but it seems that the magnet force for the kangaroo in rhino 6 is repelling the points instead of attracting them to each other.Starting position…Continue

Started by Nicolas Sep 18.

News and Updates

Force polygons of equilibrium structures

I have recently been exploring some reciprocal force diagrams using Kangaroo. From the 1869 paper by James Clerk Maxwell On reciprocal figures, frames and diagrams of forces : …to construct the Polygon of Forces, by drawing in succession lines parallel and proportional to the different forces, each line beginning at the extremity of the last. If the forces acting at the […]

Minimal surface puzzle

The top row shows three different minimal surfaces from the same boundary curves. The bottom row shows the same 3 surfaces rotated and in a different order. Which number corresponds to which letter?

Orthogonal Clustering

I’ve always aimed to make Kangaroo a specifically architectural physics engine. While it shares many characteristics with similar engines used for other purposes, such as games and animation, it has some features that are uniquely suited to designing buildings. Form-finding and physics-based-modelling often result in curved shapes, with an elegant and natural appearance which is something […]

Variation from Uniformity

All of these triangles are identical and equilateral: In architectural geometry over the last few decades, a common topic of research has been how to build and clad doubly curved surfaces in an efficient way. While computer aided manufacturing has made it possible to make buildings where every panel has slightly different dimensions, there are […]


      As regular readers of this blog will know, I’m passionate about the use of relaxation and force-based methods for optimizing geometry in a very interactive way. There is a great variety of form-finding that can be done by assigning physical forces as interactions between sets of particles. However, in my investigations so […]

Comment Wall


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

Comment by jiayingfan on August 22, 2018 at 3:56am

i am a GH rookie,glad to learn more.

Comment by Gerard Guell on August 21, 2018 at 8:20am

Hello! Does anyone have any documentation on how to use the "support 6dof" elements?

I have created a little code consisting in two beams forming a right angle which is pulled at 45° from its vertex. To goal is just to get used with Kangaroo elements and so on.

For some reason I don't really understand, when using the support tool, the nodes act as they were not constrained and free movement occurs. To bench mark it, I have taken the same code and used the "anchor" elements instead and it works quite well, so I'm pretty sure there is an issue with the "support" element.

If someone could help me out it would be greatly appreciated it.


PD: Below I'm attaching the two files (one where I use anchors as end conditions and the other using "support" elements)

Comment by Alvaro Rodriguez Garcia on March 21, 2018 at 4:56pm

Hello everybody! I am having this problem,  I already installed Kangaroo 2.4.2 and the library appears in my GH canvas. However, it seems that a couple of components weren't loaded correctly or I don't know what happened or what can I do. 

Thank you so much 

Comment by Daming on February 25, 2018 at 7:51am

I have found that the interconnectPoints Component(Utility) may has some error, the interconnetctions may be not out put.

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!





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