Grasshopper

algorithmic modeling for Rhino

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Kangaroo

THIS FORUM IS NO LONGER ACTIVE. PLEASE POST ANY NEW QUESTIONS OR DISCUSSION ON:

https://discourse.mcneel.com/c/grasshopper/kangaroo

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.

Website: http://kangaroo3d.com
Members: 2878
Latest Activity: 13 hours ago

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

http://spacesymmetrystructure.wordpress.com/2010/01/21/kangaroo/

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:

http://www.food4rhino.com/project/kangaroo

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

http://www.grasshopper3d.com/group/kangaroo/forum/topics/kangaroo-2

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

https://github.com/Dan-Piker/Kangaroo-examples

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

http://www.grasshopper3d.com/group/kangaroo/page/kangaroo2-additional-examples

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:

http://discourse.mcneel.com/c/scripting

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):

http://www.grasshopper3d.com/group/kangaroo/page/example-files

manual(for version 0.099):

http://docs.google.com/View?id=ddpv

getting started video:

http://vimeo.com/20308963

demo videos:

http://vimeo.com/album/199263

Some more tutorial videos from EXLAB:

http://vimeo.com/exlab/videos

Discussion Forum

Membrane Tensegrity 9 Replies

Hi,I`m working on tensegrity structures where as tensile members I`m using membranes (mesh). After few successful tests I have problem with quite simple one, but can`t find a reason why members which should stay in place (anchor points) are shoot up…Continue

Started by RadekS. Last reply by iris cheung May 13.

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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?

Comment by AJ on February 6, 2017 at 7:59am

im trying to use the grab component without big success  https://vimeo.com/118721449 . following the video (and also another example file > http://www.grasshopper3d.com/video/kangaroo2-planar-quad-mesh-editing ... not working as well)

help :)

Comment by ALI ESLAMI on January 3, 2017 at 4:57am
Comment by Ramon van der Heijden on December 20, 2016 at 7:43am
Hi Paul Arsene,

That post about organizing the canvas was by me. I have progressed this work quite far, but have not used kangaroo for this so far.
If you're interested, I can send you a prototype of the tool. It is functional, but may need some improvement.
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.

 
 
 

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