algorithmic modeling for Rhino

Jon Mirtschin
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Jon Mirtschin's Discussions

Lock GH UI
6 Replies

Started this discussion. Last reply by huaxiamengqing Jun 4, 2015.

5 Replies

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.


Jon Mirtschin's Page

Latest Activity

Jon Mirtschin replied to Marco Pellegrino's discussion sap2000 solid element issue in the group Geometry Gym BIM
"Hi Marco, Thanks for the post.  I can fix the element numbering refresh (thanks for pointing that out). What I can't get to work is the creation of a solid element in SAP.  It certainly worked when I implemented it (a few versions…"
Jon Mirtschin replied to javier serrano's discussion Moved and rotated geometry on the RvtElement in the group Geometry Gym BIM
"Hi Javier, Apologies, I don't recall seeing notification of these posts.  Can you post (or email to me) the rhino/gh files and I'll take a look? Is the object remote from origin?  This is one possible cause of display issues.…"
Jon Mirtschin replied to Georgios Drosos's discussion Selecting and restraining nodes out of a list in the group Geometry Gym BIM
"Bullant has a component that will assist with this filter. See if the attached file helps. Cheers, Jon"
Aug 29
Jon Mirtschin replied to Halim Yilmaz's discussion Error in Revit in the group Geometry Gym BIM
"Amalia has made some good suggestions.  Check Rhino document units are metres (else you have thin layer 0.7mm which is too thin for Revit limitations in this area). If you have problems still, please attach (or send to me) the IFC file and I…"
Aug 22
simone moroni commented on Jon Mirtschin's group Geometry Gym BIM
"Hello, I'm trying to bake grasshopper 2D structure (is a section of my structural pannel) with the comand "ggSAPbakemodel" sap, but when I select "open model in SAP" it doesn't work and rhino goes to crash. I've…"
Aug 22
Jon Mirtschin replied to Georgios Drosos's discussion Mesh join and parametric loading of elements in the group Geometry Gym BIM
"Hi Georgios, Its an interesting question and model to post. I've attached a script that will stitch the mesh, possibly there is a more straight forward means to do so but this should work (I can't recall if you have Bullant installed but…"
Aug 5
Jon Mirtschin replied to Manoo Ard's discussion Example of export Grasshopper to sap2000
"Hi Manoo, You can filter the blog by the tag cloud on the right hand side, or here is a direct link. You'll also find questions and answers on the group…"
Jul 9
Jon Mirtschin replied to AMALIA VRANA's discussion Null Reference Exception in the group Geometry Gym BIM
"Hi, Can you please share the ifc file (either post or email) and I'll take a look? It can be that a data expiry issue can occur, and if you save the gh script, close and open (forcing a recalculation) then immediately bake, then there is no…"
Jul 6
Jon Mirtschin replied to Farjad Khan's discussion Grasshopper Export
"If you'd like to generate more attributes and data in Grasshopper than can be conveyed through dwg or dxf, then there is the geometry gym plugin (that I develop) to link grasshopper and…"
Jun 26
Jon Mirtschin replied to AMALIA VRANA's discussion Geometry Gym Adaptive Component: IFC Representation MAP in the group Geometry Gym BIM
"Can you please post (or email) the ifc that you generate?  It might be a matter of updating the rhino/revit plugins ( )  I did upload new versions this morning. Cheers, Jon"
Jun 21
Jon Mirtschin replied to AMALIA VRANA's discussion Geometry Gym Adaptive Component: IFC Representation MAP in the group Geometry Gym BIM
"Hi Amalia, Thanks for the post.  That particular example is a more advanced workflow where the logic of the adaptive component family is also generated from Grasshopper.  This was to demonstrate what is possible, but I wouldn't say…"
Jun 20
Jon Mirtschin replied to AMALIA VRANA's discussion 2 problems: Unable to detect generic floor type | Revit could not complete the external command in the group Geometry Gym BIM
"Hi Amalia, Revit uses system families for floors, roofs, walls etc. I can't create one from scratch using the API, only duplicate a generic one and modify it. You need to have a floor family in the project that has only a single material…"
Jun 14
Jon Mirtschin replied to Anne Holthaus's discussion geometry gym, GSA, Galapagos in the group Geometry Gym BIM
"Hi Anne, Thanks for the post, strange, I can't replicate this.  If the close model toggle is set to true, I only get an initial model left open in GSA.  I haven't had anyone else report similar. Maybe I will give you an updated…"
Jun 6
Jon Mirtschin replied to Sebastien de Wit's discussion Grasshopper/Kangaroo > GeometryGym > GSA in the group Geometry Gym BIM
"At Shape to Fabrication in April, Daniel and I did have a quick discussion about an exporter from Kanagroo to the Structural Analysis model view definition of IFC (Which would then permit transferring the model to structural analysis software that…"
Jun 3
Jon Mirtschin replied to Anne Holthaus's discussion Voronoi and geometry gym in the group Geometry Gym BIM
"Hi Anne, Interesting definition.  I haven't had time to try and resolve it, but here's the strategy I would try. When you start subdividing into cells, you can generate your points and either dispatch to the cell they are contained…"
May 25
Jon Mirtschin replied to Anne Holthaus's discussion uniform loads in the group Geometry Gym BIM
"Sorry, I must have only quickly looked at your model (I thought it was using ifc components, not gsa).  But your clarification helps me understand your question. I've attached a modification, simply multiply the load intensity by -1 and…"
May 16

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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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