algorithmic modeling for Rhino

Andrew Heumann
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Access to Parent cluster object from inside cluster document
2 Replies

Started this discussion. Last reply by Andrew Heumann Apr 27.

How to define per-GHA loading mechanism?
23 Replies

Started this discussion. Last reply by David Rutten Jan 27.

referencing .exe assemblies in .gha
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Started this discussion. Last reply by Andrew Heumann Jan 22.

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Amir Soltani liked Andrew Heumann's video
Andrew Heumann liked David Mans's photo
Andrew Heumann replied to shingyatchun's discussion How can I remove the extra point mesh
"Your question doesn't provide a lot of information, so I don't know if there are other meshes that you want this routine to work for - but the attached will extract the corners you've highlighted from the mesh you supplied. The logic…"
Andrew Heumann replied to Nik Willmore's discussion Recompute Grasshopper Via Rhino Command Line Alias?
"This little python script does the trick: import Rhinogh = Rhino.RhinoApp.GetPlugInObject("Grasshopper")gh.RunSolver(True) "
May 14
Andrew Heumann replied to Gabriele_333's discussion Bake through physical trigger
"Any of the bake components you reference will only bake one copy of the object, at a single click. I suspect the problem is that the arduino interface you are using is sending many "true" values to the bake. "
May 14
Andrew Heumann liked Tienwei Tung's photo
May 12
Andrew Heumann replied to Crispijn van Sas's discussion crowdfunding grashopper OSX
"whoa! that's big news"
May 7
Esmaeil Mottaghi liked Andrew Heumann's video
May 7
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May 6
Andrew Heumann replied to Roey Yaniv's discussion GH Loading error
"You're off by one in your counting in MemAssemComponent - you're looking for a ParamNumber at pManager[0] but the first parameter you're adding is a point parameter.  Also, just so you know, you can set default values right in…"
May 6
Andrew Heumann replied to grma's discussion Close and reopen LB and HB
"It might be that the Ladybug and Honeybee components are executing after the other components on the canvas - you can try selecting those two and choosing "enable" and then afterwards doing the same with the rest of the definition. Or…"
May 6
Andrew Heumann replied to Shkattii's discussion Matching Data List structure?
"You can also use the "unflatten" component to coerce the contents of one list into the data structure of another. "
May 5
Andrew Heumann replied to Ethan's discussion blocks, a regular rhino question
"for rhino-only related questions, the discourse forum is a good place to look: "
May 5
Andrew Heumann replied to Hadar Moran's discussion Grasshopper version
"Why wouldn't you want the updated Rhino version? Unless you have a pirated copy..."
Apr 27
Andrew Heumann replied to Andrew Heumann's discussion Access to Parent cluster object from inside cluster document
"Works beautifully! Thanks David. "
Apr 27
David Rutten replied to Andrew Heumann's discussion Access to Parent cluster object from inside cluster document
"Try casting Owner to a cluster object. Does that work? (sorry can't test myself at the moment)."
Apr 27

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Andrew Heumann's Blog

Wire Display Toggle Switch

There is an ongoing debate in my office between those who like to organize their definitions with hidden wires for the sake of cleanliness, and those who hate them because it makes definitions hard to debug. In order to sidestep any drama, I made a little script that lets you switch all the wires in a document between "Hidden" and "Faint." It will leave all wires set to default alone. 

Download it here: …


Posted on December 24, 2014 at 12:00pm — 8 Comments

Join NBBJ's Design Computation team!

Are you passionate about design computation? Are you a Grasshopper guru or deft with Dynamo? NBBJ’s Digital Practice group is seeking to expand our Design Computation team across the firm. We have offices in Boston, Columbus, London, Los Angeles, New York, San Francisco, Seattle and Shanghai, and are always seeking out the best and brightest talent.

The ideal person we are looking for:

…is an expert in the use of Grasshopper and/or Dynamo

…is comfortable in a…


Posted on August 18, 2014 at 7:40pm

Tweet2Form: GH-Powered Formalist Tweetbot

I just finished putting together a beta version of a little project. It's a tweetbot powered by a grasshopper definition. The bot transforms a cube according to a series of operations you specify, and then tweets a picture of the resulting form. There are currently 10 formal operations that the bot understands:





shearA (Shear angular)…


Posted on November 24, 2012 at 8:00pm — 9 Comments

Michael Graves, Digital Visionary: What Digital Design Practice Can Learn From Drawing

Check out my latest blog post, responding to Michael Graves’ recent article in the NYT, speculating on ways that digital design practices can learn from the way drawing functions as a design tool. …


Posted on September 10, 2012 at 11:22am — 14 Comments

Find and Replace in Grasshopper Documents

originally posted here

Since David Rutten added to GH the ability to set a default text panel background color, I’ve had my panels set to be white instead of the default bright yellow. But in all my old definitions, the panels remain yellow, and it drives me nuts. I was going through and changing them manually when it occurred to me that there was a much better way, based on a trick I saw David mention in a…


Posted on February 7, 2012 at 7:30am

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At 9:13am on December 30, 2014, rhinograsshopper2014 said…

Saludos de ecuador porfavor brindame ayuda deseo desarrollar window 500lux ayudame con informacion explicacion desarrollo cualquier ayuda es bienvenida gracias


Greetings from Ecuador brindame please help develop desire window 500lux help me with information explanation developing any help is welcome thanks

At 11:55am on April 24, 2013, djordje said…

Hi Andrew,
I see you are quite fluent in RhinoCommon.
Was RhinoCommon SDK your only source for learning it?
Thank you.

At 2:46pm on November 18, 2012, Dhruv Seth said…
At 3:07pm on September 26, 2012, Théo Mesnier said…

hi Andrew, I actually have a big problem trying to import rhino text objects to grasshopper to create a points cloud; fortunatly I found the solution in one of  your old posts...

but it doesn't work for me... certainly because of the new version of GH (0.9)... I'm using Rhino 4. I really need your help on it, I didn't find other solution anywhere else and don't know anything in scripts...  Thank you so much !

At 6:52pm on June 11, 2012, Mateusz Zwierzycki said…

nice works ! publish some more here

At 6:15am on November 9, 2011, Riyad Joucka said…

Hello Andrew;

Great work on the Origami simulation showed here:


just wondering if you can share the definition?

At 3:27am on October 26, 2011, Huzefa Ali said…
At 2:18am on October 22, 2011, Huzefa Ali said…

hi Andrew,

i need help editting the qvoronoi defination by demitrie. When ever i give my points rather than the random points, the qvoronoi turns red and the defination fails to work. Also that i need to give the bounding box to be my site. how is that possible? Its my thesis year and im running out of time. I am new to grasshopper and seek guidance. Thankyou.

At 11:44am on February 26, 2011, Ángel Linares said…

Cool!, thanks for sharing concepts :D I'll try that :) 



At 9:22am on February 13, 2011, Ángel Linares said…
Hey man, could you share the definition that Daniel share with you to make rigid origami stuff with Kangaroo?


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