Kangaroo

Information

THIS FORUM IS NO LONGER ACTIVE.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: 3024
Latest Activity: on Friday

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

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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 […]

MeshMash!

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 […]

More…

Comment Wall

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

Comment by Arthur Lara on March 14, 2012 at 6:12am: Jonathan,

The script does not work with the new grasshopper! This tencil structure (http://www.aaschool.ac.uk/STUDY/VISITING/saopaulopavilion) was made by a team and Cynthia (Cynthia Nojimoto <cynnoji@gmail.com>) was my student, came to build the design in 1:1 scale. One AA teacher helped her with the Bend curve and used Kangarro. I simplified the script, if you need to see my project umbrella(http://www.grasshopper3d.com/forum/topics/umbrella-porject?xg_sourc...) made to study the script. Contact her that will have updated information. My email: artagent@yahoo.com

Comment by Jonathan Munoz on March 14, 2012 at 2:28am: Thank you very much I appreciate the help!

Comment by Arthur Lara on March 14, 2012 at 2:17am: Hi Jonathan,

I've one script for a installation for ussing some sheets with bend curves in kangaroo, interfaces with arduino, firefly and sensors...was made in a AA workorkshop and i'll see if still working...OK?

Comment by Jonathan Munoz on March 13, 2012 at 11:43pm: I am new to Kangaroo actually just started playing with it today and got some hang of it but I was wondering if anyone could help me figure out how to do what is done in this video http://vimeo.com/11702813 I tried to see some of the grasshopper script behind but its too small. This is for an installation of a sheet that will move in respons to motion through sensors and some arduino boards.

Comment by Iain Blampied on March 12, 2012 at 4:33am: Hi,

Does anyone know if it would be possible to model something similar to this video using wind in Kangaroo, any advice would be really helpful. Thanks

http://www.archdaily.com/214862/windswept-installation-charles-sowe...

Comment by Martin Dembski on March 11, 2012 at 3:50pm: Hi Lara,

I've took your question to this discussion.

Best,

Martin.

Comment by Lara Behmoaram on March 11, 2012 at 3:08pm: Hi,

I am trying to create a catenary canopy over 4-5 voronoi cells in one go but it seems like it is not possible. Does anyone have any advice on this?

Comment by wang on December 13, 2011 at 3:15am: Hi all

There is a curved surface,I want to made it subdivision into equilateral triangle mesh, how should I do? I have tried to pull a Partitioned mesh to the surface ,but when the Kangaroo works ,it is not what I want !

Anyone can help me ?

Comment by megan sadler on November 28, 2011 at 5:42am: Hi all

I am using mesh relaxation for a model where diffeernt areas, of the mesh are more relaxed than other areas. I have decided the best way is to use cable ties and vary the stiffness of these which would then make have an effect on the mesh. Only problem is I cant seem to change the stiffness anymore (the cables to be larger than 5000 and the mesh lower than 400) without it exploding.. any ideas please?

Comment by Georgi Petrov on October 20, 2011 at 12:09pm: Going back to older version of Kangaroo. I need to revisit a project that I was working on earlier in the year. It was done using Kangaroo (version 0.044). I still have the old KangPhys0044.gha file, but I can't remember or find information on where I was supposed to put it in order for Grasshopper to load it. Can you remind me?

thank you