algorithmic modeling for Rhino

Jon Mirtschin
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Lock GH UI
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Started this discussion. Last reply by Steve Lewis Jul 28.

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Started this discussion. Last reply by David Rutten Nov 23, 2012.

Shatter periodic nurbs curves
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Started this discussion. Last reply by Jon Mirtschin Apr 21, 2012.


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Latest Activity

A. Cheng replied to Jon Mirtschin's discussion SAP2000 in the group Geometry Gym BIM
"Hi Jon! I've updated ggRhinoSAP, but no dice.  I still get this:"
Oct 20
Jon Mirtschin replied to Jon Mirtschin's discussion SAP2000 in the group Geometry Gym BIM
"Not sure about that, never had someone report this. Perhaps try installing latest plugin from It takes a while to prepare and solve this model (the resulting displacement is large, I think some more restraints…"
Oct 20
A. Cheng replied to Jon Mirtschin's discussion SAP2000 in the group Geometry Gym BIM
"Thank you so much!  That does explain why SAP was getting confused.  However, I'm still having some difficulty.  ggSAP runs and Rhino tells me "+++ Analysis Successful!".  SAP opens fine, but there's no model…"
Oct 19
Jon Mirtschin replied to Luciano's discussion How to set up the elements of a road in geometrygym in the group Geometry Gym BIM
"Hi Luciano, Thanks for the post.  I think you're touching on a very interesting subject, that's really still in it's infancy in BIM.   IFC4 has started to make provision for civil and landscaping elements, but on in a very…"
Oct 19
Jon Mirtschin replied to Jon Mirtschin's discussion SAP2000 in the group Geometry Gym BIM
"Sorry for the slow reply, hope you already found the reason for the problem. It's a very interesting model. You're interrogating the displacement from a point in free space, not connected to the elements that you're generating.…"
Oct 17
建筑师哈哈 commented on Jon Mirtschin's group Geometry Gym BIM
Oct 5
Jon Mirtschin replied to Shohei Yamamoto's discussion For conversion to IFC in the group Geometry Gym BIM
"See if you can make sense of this.  Here's an image of the resulting IFC file imported into Archicad. "
Oct 3
Jon Mirtschin replied to Georgios Papadogeorgakis's discussion IFC Export to REVIT in the group Geometry Gym BIM
"Hi Georgios, Nice to hear from you. The export "from" Revit (your thread title says to??) is still work in progress.  My first priority with this tool was to provide functionality not available in the Autodesk implementation (such…"
Oct 1
A. Cheng replied to Jon Mirtschin's discussion SAP2000 in the group Geometry Gym BIM
"Hi everyone!  First, thanks to Jon especially.  You've been extremely helpful and I've really enjoyed exploring geometry gym.  However, now I've run into a problem with ggSAP.  I'm trying to model a curved…"
Oct 1
Jon Mirtschin replied to Allan Lyons's discussion Installing Add-Ons for ALL Users on a machine
"Doesn't Grasshopper now (for some time) load any .gha files located in the same folder as a loaded Rhino plugin? You could set it up like this (instead of the grasshopper components folder) so that it loaded per machine (and not per…"
Sep 26
Llordella Patricio liked Jon Mirtschin's profile
Sep 13
Jon Mirtschin replied to Ashish's discussion Decompose IFC column in the group Geometry Gym BIM
"Hi Ashish, Most of the demand (influencing my efforts) has been for generating IFC from Grasshopper, rather than extracting files.  So you will find not many components and work to do. A beam does inherit from IfcProduct, so most of the…"
Sep 12
Jon Mirtschin replied to Lisa O's discussion import results from global buckling analysis in GSA back to Grasshopper (GeometryGym)
"Hi Lisa, Sorry for taking some time on this, was a little trickier than I anticipated. I've attached an example test for this.  Please download todays build of the GSA plugin from Let me know if it…"
Sep 12
Jon Mirtschin replied to Derin Yilmaz's discussion Missing components, no plugin name/version/author shown
"ggUnroll and ggConvCurve are found in BullAnt,"
Sep 7
Jon Mirtschin replied to Greg Matejko's discussion GeometryGym+ROBOT not working
"Unfortunately Robot seems to be pretty unstable.  Keep sending the crash reports to Autodesk and we'll see if they do anything about it. You might find it works better if it is already running prior to the first bake/analysis run but I…"
Sep 5
Jon Mirtschin liked Daniel Piker's photo
Sep 3

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Geometry Gym Plug-ins - AEC BIM and Computational Geometry

Grasshopper plug-ins assisting Architectural and Structural modelling including BIM under constant development and improvement.  Computational geometry solvers useful to many other designers.

StructDrawRhino is a Generic Structural…

Posted on April 17, 2010 at 12:00am — 11 Comments

Comment Wall (34 comments)

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At 3:42am on July 18, 2014, shahryar said…

Dear Jon,

I am trying to import one gbXML file which was exported by Revit .I have  loaded it in Ecotect to apply material. Now, I am planning to import in Rhino to analysis in grasshopper. I have downloaded geometrygym plugin but it does not work in Rhino and just appears in grasshopper. Would you please guide and help me by offering any information how I can to import gbXML files to Rhino.

Yours sincerely,

At 10:41am on August 27, 2013, Gabriel Áh said…

hey Jon, 

 Im trying to use geo gym, but this legend pops out:

where can i get the free evaluation code and then extend it to the educational version

by the way thanks for sharing, and congrats for the hard work



At 12:43pm on June 7, 2013, Mehdi Hasanzadeh Samadi said…

is there any plug-in for revit 2013 32-bit too ? i just see the 64-bit version !!

At 3:36am on January 16, 2013, trung1133 said…


i am not able to learn anything from the example files as some things turn red!!! then back to orange if i remove the NAME (N) i.e. nameless component

please help

At 11:25am on January 13, 2013, John Stanford said…

Hi Jon, thanks for adding, i'm pretty interested about your work and i've been looking around your site some time ago.

i've been using grasshopper only for quiet sometime now, so im still trying to figure out the basic stuff, but i think it would provide such a great help in doing my architectural studies combined with BIM software at hand

has there been any new update about grasshopper and archicad connection?


At 8:43pm on December 20, 2012, Chansoo Byeon said…

Hello Jon

Thanks for the add! 

Could you give me some tips of where I should start? I really want to master Grasshopper.

At 5:35am on October 28, 2012, Guido Nieri said…

Hi Jon,

I am a student and I am interested in your plug-in. I would like to use that on my thesis, are there any student version?

Thank you

At 3:31am on August 14, 2012, djordje said…


I knew we can count on you, you Australian genius !!!

At 5:07pm on August 13, 2012, djordje said…

Jon I took a look at your article about Rhino/Grasshopper to Vasari import.

Is there any other way to eliminate the Revit in the process of importing?

At 6:12pm on July 6, 2012, Diego Xavier said…

Hi Jon!

Thank you for the Geom Gym activation. I´ll be participating in a workshop that maybe will use your software!





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