Introduction to Geometry Gym Rhino and Grasshopper Plug-ins

Rhino and Grasshopper

Rhino3d is a commercial 3D computer graphics and computer-aided design (CAD) application software developed by Robert McNeel & Associates. Rhino geometry is based on the NURBS mathematical model, which focuses on producing mathematically precise representation of curves and free-form surfaces in computer graphics.

Grasshopper is a visual programming language and environment that runs within the Rhino computer-aided design application.

You should have at least a small understanding of how both Rhino and Grasshopper work to take full advantage of the Plug-in that we provide. The websites below will act as a good starting point.

Geometry Gym Plug-ins

BullAnt Plug-In (FREE)

BullAnt is at the basis of Geometry Gym and provides a number of geometry creation tools, utilities tools, and simple form finding analysis components.

The BullAnt plug-in provides a number of utilities which can be used for a number of different applications both in architecture and structures and is generally required when running a lot of the additional plug-ins (especially structural analysis plug-ins).

BullAnt for Rhino-Grasshopper is currently a free plug-in.

Structural Analysis Plug-Ins

Geometry Gyms structural analysis plug-ins provide parametric definition of structural analysis models from within the Rhino and Grasshopper environment as well as a multitude of tools for the import and export of model files and conversion of files to and from multiple model formats.

Please see the introduction to Structural Analysis page for all supported structural analysis software.


BIM (Building Information Modelling) Plug-ins

The BIM plug-ins which we provide link popular modelling programs with Rhino and Grasshopper or in the case of IFC and gbXML allow the creation of OpenBIM format models through Rhino and Grasshopper current BIM related Plug-ins include:

pageIFC | ggRhinoIFCpageRevit | ggRhinoIFCpageTekla | ggRhinoTekla


There are a number of powerful plug-ins for Rhino and Grasshopper which can enhance your workflows when incorporating Geometry Gym tools. Some of the third party tools we use on a regular basis are listed below:

  • Karamba3d

  • Kangaroo

  • Speckle

  • Elefront

The plug-ins above and many more are installed from rhino package manager.

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