algorithmic modeling for Rhino

Andrew Heumann
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bug: TwistedBox not transforming
2 Replies

Started this discussion. Last reply by Andrew Heumann Apr 18.

Which Scripting Language should I learn? C#, VB.Net, or Python?
8 Replies

Started this discussion. Last reply by Martin J May 18.

Issues with unusual Color Spaces
1 Reply

Started this discussion. Last reply by Fred Becquelin Jan 28, 2016.

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Latest Activity

Andrew Heumann replied to Ranjeeth Mahankali's discussion Using same custom datatype in two plugins
"Just to add to David's already-thorough answer: For option 2 I often rely on Newtonsoft's Json library - it has some useful mechanisms for serializing / deserializing dot net objects - JsonConvert.SerializeObject and…"
Andrew Heumann replied to Scott Deisher's discussion Font "Member not found" error in the group Doodlebug
"Hi Scott - do other components work? This looks to be a COM interface issue (notoriously tricky to troubleshoot) which may have to do with building against a different version of Illustrator. What version of illustrator are you running? "
Andrew Heumann replied to Filippo's discussion selected preview not longer working on latest rh wip / gh version
"I can confirm this is an issue. It appears to only affect certain display modes - if you switch your viewport to wireframe, does the geometry show up? "
Andrew Heumann replied to Jillian Tackaberry's discussion Mesh Baking strangely in Rhino.
"maybe the normals are flipped?"
May 19
Andrew Heumann liked marios messios's video
May 19
Martin J replied to Andrew Heumann's discussion Which Scripting Language should I learn? C#, VB.Net, or Python?
"Thank you, Paul! The difference is smaller then I imagined then. I think your last paragraph sums it up well, and it makes me less catious spending time in the scripting editor. Cheers, Martin"
May 18
Andrew Heumann commented on Andrew Heumann's blog post Create Snippets with Grasshopper
May 17
Andrew Heumann replied to Ibrahim A's discussion Dividing numbers by a Comma
"there is a much easier way! "
May 16
Michiel Spaapen liked Andrew Heumann's profile
May 16
Manoo Ard commented on Andrew Heumann's blog post Create Snippets with Grasshopper
"Hi Andrew. Thanks it work but could you make it to update existing definition rather than ... ? Thanks"
May 15
Andrew Heumann replied to Weston Norwood's discussion Problems with UCount and remapping points to a surface
"you need to flatten the points input to the "Surface From Points" component."
May 15
Paul N Jeffries replied to Andrew Heumann's discussion Which Scripting Language should I learn? C#, VB.Net, or Python?
"I would say that compiling in VS offers the following advantages: - Proper debugging with step-through, performance profiling etc. - Slight increase in performance. - Can completely customise the component by setting the icon, adding menu options…"
May 15
Andrew Heumann commented on Andrew Heumann's blog post Create Snippets with Grasshopper
"Hi Manoo - delete your old one from the user objects folder."
May 15
Balazs Kisfali replied to Andrew Heumann's discussion Feature request: automatic re-looping in the group Hoopsnake
"Hi Yiannis, I hope your graduation project went well ;) I am using the Hoopsnake component for a loop with Karamba3D and it works well manually. What it does, when Karamba optimizes my structure then HS takes a wind drag area of my structure. The…"
May 15
Manoo Ard commented on Andrew Heumann's blog post Create Snippets with Grasshopper
"Hi Andrw, Thanks for your good plugin. Quick question how can I updated a saved snippest? Any trick? See attached photo. Thanks"
May 13
Andrew Heumann replied to Chris Weller's discussion Dynamically link or mass-internalize .ghcluster references
"I think McNeel are working on a more robust first-class feature for managing dependencies in GH2 - a true package manager."
May 12

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Andrew Heumann's Blog

GH Webinar - GH Plug-in Development in C#

Just a little blatant self promotion :)

If you have a basic knowledge of working with C# scripts in Grasshopper but want to take it to the next level and start building your own GHAs, you may be interested in the webinar I'm teaching tomorrow for We will go through the basics of plug-in development - the structure of the code, how to get data in and out of a component, and the debugging…


Posted on December 6, 2016 at 8:30am — 1 Comment

Grasshopper Pro Webinar Series

Sign up at!! 

Posted on October 31, 2016 at 6:12pm — 8 Comments

Human UI Webinars - Beginner and Intermediate

I'm excited to announce I'll be teaching two upcoming Performance.Network webinars on my plug-in, Human UI for Grasshopper. Learn to create professional user interfaces for your Grasshopper scripts!

Sign up today - space is…


Posted on June 28, 2016 at 9:25am — 1 Comment

Auto-Document GH Libraries

I wrote a little script for myself that I thought might be useful to other GH developers or teachers. Feed it a component from any library (such as a plug-in you're developing), and it will list and describe all the components in that library. It can also generate a markdown-formatted text file,…


Posted on January 10, 2016 at 11:34am — 6 Comments

Create Snippets with Grasshopper

Grasshopper by default allows you to save individual components and clusters as "user objects," which can be re-used over and over again. However, sometimes you want to save a group of components without clustering them - like a component with pre-defined value lists or sliders attached, or special configurations with plugins like kangaroo, honeybee, or anemone.

The attached script lets you do just that - create a user object that can automatically place multiple components at…


Posted on October 15, 2015 at 7:48pm — 15 Comments

Comment Wall (11 comments)

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At 7:48pm on February 29, 2016, xiejeff said…

HI Andrew,

could you add crv1 pt1 srf1 to the control panel?Question.rarThe work flow is:rhino -->control panel --> grasshopper

At 11:31am on November 9, 2015, Ding said…

Hi Andrew,

I am trying to use "Render Text to Screen" to visualize texts in the Rhino viewports other than "Perspective, Top and Back", but it doesn't work. (it only works in "Perspective, Top and Back" viewports on my laptop.)

Could you please let me know what could be the problems? Thank you very much in advance!

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 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 :) 





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