algorithmic modeling for Rhino




The discussions here are preserved for reference, but new questions posted here are likely to go unanswered.

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

Members: 2901
Latest Activity: on Saturday

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.

Kangaroo2 is now included with Rhino6, you do not need to install it separately.

You can download it for Rhino5 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

Reciprocal force diagram 2 Replies

A simple definition showing the generation of a reciprocal force diagram for a compression only structure. When the forces are in equilibrium (ie the dynamic relaxation part has stopped moving), the vectors in this reciprocal diagram form closed…Continue

Started by Daniel Piker. Last reply by archz2 Sep 28.

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 Mårten Nettelbladt on March 1, 2011 at 1:57pm
David, you'll have to downgrade to v 0.8.0004 (2010-12-11). Daniel is working on it, see here
Comment by dvdrbls on March 1, 2011 at 1:43pm

Hi Daniel, i just installed newest release of grasshopper and Kangaroo dissapear, if i want to mod a definition do i have to downgrade to 8.003?


Comment by Dicky Ferd on January 3, 2011 at 7:22am
Amazing release Dan... Thx alot... cheers
Comment by hamia Aghaiemeybodi on January 2, 2011 at 10:25pm
Thanks for your release . . .
Comment by Tudor Cosmatu on January 2, 2011 at 10:10am
Really cool release! Thanks
Comment by Ivan Kiryakov on January 2, 2011 at 6:59am

Thank you for the new release !!

It´s amazing!

Comment by ZHANG Yan - popabczhang on November 29, 2010 at 2:48am
thanks for your invitation!
it's a amazing plugin
Comment by Fernando Rial on November 22, 2010 at 2:36pm
Thanks for the invitation!!
Comment by tensional calculous on November 3, 2010 at 11:39pm
Comment by Tudor Cosmatu on November 2, 2010 at 5:17am
Thanks for the invitation :)





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