Hi All,
Interesting comments and debate, good to see.
I'm the developer of the Geometry Gym plugins, and the software is licensed "software as a service". This includes support and advise (and new features) to ensure the model exchange meets the requirements that you have (between Rhino, Grasshopper and ArchiCAD via IFC).
Whiteman, the main reason you would choose IFC over a neutral geometric format (such as dxf or iges) is to apply attributes such as material, purpose (roof, beam, slab, stair, window etc), assign to a building, building level etc. All those attributes can be assigned within Grasshopper using my plugin.
I don't get to promote to many of the commercial uses of my plugins, but as I'm involved in this one it's a little easier. This render presents a new canopy at Ballito Lifestyle Mall (in South Africa). It was rendered in Archicad at Evolution (
www.evolutionarchitectscc.com/ )
The Steel grid and glass panels were developed and arranged in Grasshopper, the geometric model was exported to Archicad using IFC for geometric checks and detail development, and the structural analysis model sent to structural engineer (
www.nessconsulting.co.za/) using the Oasys GSA plugin.
If anyone has any questions or wants to learn more, please post here or contact me directly.
Cheers,
Jon