algorithmic modeling for Rhino

Andrew Heumann
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Andrew Heumann replied to David Rutten's discussion Grasshopper 0.9.0076 available for download
"I've sorted it out for my own purposes, but I have a bigger question (maybe worth its own post) - in a situation like that, where I want my GHA to be compatible with two different versions of GH, and version A supports method a, and version B…"
Andrew Heumann replied to Paolo Alborghetti's discussion C# Get mesh vertex color
"the quick way I pulled together to do this... (where M is a mesh, P is a Point3d, and A is the output color) PointCloud pc = new PointCloud(M.Vertices.ToPoint3dArray()); A = M.VertexColors(pc.ClosestPoint(P));"
Andrew Heumann replied to Paolo Alborghetti's discussion C# Get mesh vertex color
"If you're not picky about exactly interpolating the color in between vertices (which mesh.ColorAt tries to do) you can just find the closest mesh vertex, get its index, and use Mesh.VertexColors[i];"
Andrew Heumann replied to David Rutten's discussion Grasshopper 0.9.0076 available for download
"answered my own question. looks like it's "CopyFileToAppropriateFolder" now! Any other SDK changes we should be aware of?"
Andrew Heumann replied to David Rutten's discussion Grasshopper 0.9.0076 available for download
"Awesome, super excited! Just a note, looks like this broke one of my plug-ins - "Method not found: 'string Grasshopper.Kernel.GH_ComponentServer.CopyFileToRoamingFolder(string,Boolean)'." - did this method get removed?"
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Driving GH with Photoshop

"niubility...Could you show more details for us?? Thanks a lot!!!"
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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

Applied Grasshopper: Aluminum folding for Sarah Oppenheimer

Hey all - just added a post documenting my GH work for the artist Sarah Oppenheimer. Check it out here!



Posted on August 12, 2011 at 9:46am — 2 Comments

Comment Wall (9 comments)

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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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