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: 2961
Latest Activity: Jan 11

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

Mesh Hinge Angle Constraint?

Hello everyone!I'm working on the starshade origami pattern and want to refine one last thing.I've set the hinge angles for the mountain and (-ve) valley folds (See pic 1) but I want to constrain the angles of the rest of the edges. (See pic 2)I…Continue

Started by Lina Bedda Jan 11.

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Comment by Paul Arsene on December 6, 2016 at 3:27am

Hello everybody,  few weeks ago I've seen some attempt to reorganize grasshopper code into a readable clean manner using kangaroo, like transforming spaghetti code into clean linear code, but I just can't find it anymore. Any info about this? Thanks in advance.

Comment by Canox on November 30, 2016 at 9:35am

i have a new examples with kangaroo 2 ( soapfil , anchor and tangential smooth ) and laplacian .

in kangaroo 2 is easy to control a mesh tension but is more difficult to have anchorpoints control in the naked edges .

this is the example with kangaroo 2 

this is a example with laplacian .

For produce a differents solutions than "Minimal surface" with kangaroo 2 or  solutions with "Springs" from kangaroo we need to find a specific force that push the Mesh vertex points  to the fix anchor points in the naked edges .



Comment by Canox on November 27, 2016 at 4:55pm

i leave here the definition , and rhino file .

( of course i used Meshmachine settings

28-11-16.3dm )

Comment by Canox on November 27, 2016 at 4:43pm

I am working in a nodes project for 3d printed  structures and its difficult find a smooth transition between the branch and the joint with springs force .

I am trying to improve the tangency between  the the final mesh at the anchorpoints  and each branch direcction rest lenght in springs force.

At the same time avoid the mesh to go in a convex direcction and have a smooth transition.

How we can find a definition  , where the are diffents settings from  rest lenght and stiffness to find a correct mesh  ? i tried to apply unary force in some points to the mesh in every anchorpoint without success

this is de example that i work with 

this is what i get normally , with rest lenght and stiffness settings  

this is my goal , where there are a smooth transition in every branch direccion 

thanks !!!!

Comment by Jon on November 25, 2016 at 2:22am

Hi Riccardo,

you shouldm install weavebird.

Comment by riccardo foschi on November 24, 2016 at 12:30pm

I have tried to download some definitions in the example page you linked, but when I open them I always miss some nodes because I have a newer version of GH and Kangaroo and the definition won't work (I have both kangaroo physics and kangaroo 2 but it won't work anyway).
For example when I open this one I will see this algorithm, what's missing??
Can anyone with an older version of GH can link me a screenshot of the correct algorithm?

Comment by Will Pearson on November 2, 2016 at 5:47am

Manuel, look for the "Show" component.

Comment by Manuel on October 26, 2016 at 12:56pm

in kangaroo 2 anyone know how to recreate "geometry in" and "geometry out" from older kangaroo solver?. Its possible?

example: when remove duplicates lines/points its use for goals, but then you need to reconstruct original geometry.

Comment by Moonbeast on October 20, 2016 at 8:00pm

Does anyone have any ideas for how to create a vortex force in Kangaroo2 similar to the component in K1?

Comment by Arturo De La Fuente on October 7, 2016 at 7:24am





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