I recently discovered a new blog – Geometry Gym, which is run by Jon Mirtschin. In case you have not seen his blog, I suggest you head over and take a look at the projects he is working on. He has and continues to work on some exciting projects involving IFC interoperability as well as the newly added Grasshopper to Revit via IFC add-on. The video which you can see on the right hand side gives a small explanation of his plugin.
“Here’s some sample models and an explanation/demonstration of the work I’m advancing to import IFC models into Revit.
You can test for yourself. Here’s the grasshopper files used in the demonstration and some example IFC output.. You need to download the latest plugins from http://www.geometrygym.com/downloads
Note I’ve only been working on the Revit addon over a period of 3 months compared to 22 months for the Rhino plugin (although I can reuse 80 to 90% of the same code) so I still need to enable many aspects of IFC file importing. But I will prioritize any example models and requests that come from users, so please don’t hesitate to ask. I look forward to hearing from you.”
The above post is from the Geometry Gym blog posted on the 13th April 2012 and I would advise you to keep an eye on the site for future updates. Many thanks to Jon for his hard work on these great projects.