Grasshopper

algorithmic modeling for Rhino

Information

Kangaroo

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)

Website: http://kangaroo3d.com
Members: 2075
Latest Activity: 5 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.

You can download it from here:

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

The 2.0 download includes a first draft of the manual and a collection of example files.

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

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

New origami example 44 Replies

Origami_simplified.ghThis example shows the use of the new user object…Continue

Started by Daniel Piker. Last reply by ndy_123 Feb 2.

Envelop of lines network , mesh and funicular structures 21 Replies

After playing with Kangaroo on this discussion and as I like a lot Marc Fornes structures I wanted to go a bit…Continue

Tags: funicular, kangaroo, envelop, network, topology

Started by Laurent Delrieu. Last reply by Laurent Delrieu Feb 1.

looking for Threads/ Wooly paths definition 14 Replies

Hello I am looking for Threads original definition by Daniel Piker. It used to be included in download file with kangaroo... thanks in advance for info -WContinue

Started by Wiktor Kidziak. Last reply by Tim Shapkin Jan 23.

Formfinding using AreaWeight 1 Reply

I'm trying to use the AreaWeight component as a force object for form finding a mesh, however, when I then run Kangaroo, the mesh just disappears. I don't have the same issue when using a unary force - however, I am looking to use the component for…Continue

Started by Brianna T. Last reply by Laurent Delrieu Jan 22.

How to automate actions after waiting for K2 to converge for sequential input changes 4 Replies

Hello world,this is perhaps a broad question, but nonetheless I'd be extremely grateful of any help or pointers.For an arbitrarily slow/big K2 simulation with some variable input parameter (see file attached), I'd like to automate a downstream…Continue

Started by Gregory Quinn. Last reply by Gregory Quinn Jan 18.

KangaMark - PC performance Kangaroo benchmarking 34 Replies

Following a few recent discussions:…Continue

Started by Daniel Piker. Last reply by Frank Jan 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 […]

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 […]

Comment Wall

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

Comment by bruno di vito on September 12, 2013 at 4:21pm

Hello,

I was trying to make this simple boat flotating but I don' t figure out how, I did it with a sphere just adding some springs inside the shape to avoid the geometry collapse..(I didn't find similar examples posted)

Thanks in advance

flotation.gh

boat%20for%20flotation.3dm

Comment by Miguel Villegas on August 29, 2013 at 12:32am

Hi. I'm having the exact same problem Jimmz stated just below. Files are placed and unlocked. Any guesses on the solution? Thanks in advance.

Comment by Miguel Vidal on August 23, 2013 at 1:47am

Hello everybody,

Could anyone please recommend some (accessible) bibliography on the geometric and physical notions of Dynamic Relaxation?

Many thanks in advance!

Comment by Jimmz on August 22, 2013 at 9:39pm

It seems Rhino5 SR5 64bit,grasshopper 0.9.0056 could not run the kangaroo 0085,I can't see the icon of the kangaroo,and always a loading error bufore access in the grasshopper window.But I'm sure I had copy the .gha and .dll into the libraries folder,So I wanna know the reason

Comment by Michel Cassagnes on July 11, 2013 at 6:39pm

Hello,

I begin with Kangaroo. I am trying to model a movable roof made with mesh articulated at some edges (I used hinges). roof is moving on a plane, so I constrained some points to remain at z=0. I have turned around for hours, studied examples that I found here, but I cannot make my model run. I need some help.

Best regards,

Michelamphi.gh

Comment by muhammad fachrurrazi on June 27, 2013 at 5:01am

hello guys, i have problem with Plaw component. i dont know why its not working again but nothing error report. thanks for your help

Comment by Andrei Raducanu on June 5, 2013 at 9:33am

do you reckon a anti-funicular shape is still the way to go if you have an assembly system like the Boxel Pavilion, where the "bricks" aren't aligned to the surface but stay vertical (therefore the compression force isn't perpendicular to the modules' faces, but comes at an angle)? hopefully somebody with structural knowledge can enlighten me...

 

Comment by Andrei Raducanu on June 5, 2013 at 7:56am

hey, all!

do you guys know of a method that can be used when you want to convert a brep into a mesh with fairly uniform faces (in size and shape), which is what i guess is needed when doing anti-funcular simulations... Thanks a lot!

Comment by Dmitry on May 16, 2013 at 4:00am
Comment by Dmitry on May 16, 2013 at 3:53am

Hello Daniel !
sorry for may ask same question again  , but I cannot found solution how to fix it .
the target is to make limit border of shape for circle paking  .
I add some button  to script , which I load from your blog , for make possibly use different  diametr of circle . now it can paking , and each circle stop when reach border of surface by it's center.
but I would like to make  circle stop when reach border of surface by it's outline .
is it possible to do something in this script , for it work as I need ?

 
 
 

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