Creating a custom GH component in Python

Dear All,

I was just wondering whether it's possible to create a GH component in Python, and if so any examples?

Many thanks

Replies to This Discussion

Permalink Reply by djordje on August 28, 2014 at 12:22pm

Hi Omar,

No, currently it is not possible to create .gha files with python, and we are all hoping this will change as soon as possible.

But what you can do is create user object files (.ghuser).

Permalink Reply by Omar Helmy on August 28, 2014 at 1:17pm

Thanks Djordje,

But what is the difference?

Permalink Reply by djordje on August 28, 2014 at 1:44pm

I may not be the best person to answer this question.

.gha files are in fact .dlls. You can't open them nor change their code. You can call them from node-in-code feature.
User objects are basically C#,VB.NET,Python components (the ones you can find in the Math->Script tab).
You can open, edit them, and can't access through node-in-code feature.

Permalink Reply by Omar Helmy on August 29, 2014 at 3:43am

many thanks Djordje

Permalink Reply by Giulio Piacentino on November 15, 2016 at 11:20am

There is now a new tutorial on GhPython code compilation in McNeel discourse.

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Devang Chauhan on November 18, 2016 at 1:01am

Hi Djordje,

So I gather from your response that it is not possible to access lines of code of any of the user objects (Say LB + HB objects) that my grasshopper use from a python component on canvas. Is that correct?

Thanks,

Devang

Permalink Reply by djordje on November 18, 2016 at 5:32am

Hi Devang,

I haven't checked if this is true for the newest Rhino WIP, but on Rhino 5 you can't access other Ladybug/Honeybee user objects from the ghpython component.
Mostapha started tackling this issue in the last release ("Rewriting Ladybug!" section):

http://www.grasshopper3d.com/group/ladybug/forum/topics/release-not...

by completely rewriting the Ladybug code:

https://github.com/ladybug-analysis-tools/ladybug

At the moment only few Ladybug components are supported.

EDIT: sorry for receiving two replies. For some reason my first one went berserk, and showed only the link.

Permalink Reply by Devang Chauhan on November 18, 2016 at 10:23am

Thanks for responding Djordje. I understand. This is serious OOP. Using dot notations will be so much fun.

Permalink Reply by Miriam Dall'Igna on April 20, 2015 at 4:49am

Hi guys,

Are there any news on creating custom GH components in Python please? Any developents towards that at all?

Many thanks,

Miriam

Permalink Reply by Giulio Piacentino on April 20, 2015 at 8:36am

Hi again Miriam,

yes - in the Rhino WIP you can find an implementation. Please note that this is a beta feature -- it might change or be removed in future versions of Rhino.

Thanks

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Miriam Dall'Igna on April 20, 2015 at 8:54am

This is great! Thanks a lot Giulio.

Miriam

Permalink Reply by Alessio Lombardi on April 21, 2015 at 3:37am

Hi Giulio,

I've installed Rhino WIP, the latest version of GH and the latest GhPython component, which on Food4Rhino still is 0.6.0.3. Where can I find the Grasshopper Python Script Editor that I can see in your picture?

Many thanks in advance.