From SketchUp to Radiance (su2rad) with Open Source scripts

On the Google Code Repository, there is a "su2rad" project, which contains Ruby scripts to export a SketchUp model into a prepared scene for rendering with the Open Source Radiance lighting simulation software.

The Ruby scripts are apparently based on another Ruby script (ogre-exporter) and is a full plugin, including HTML-dialogs. I might have to take another attempt at re-installing Radiance on my laptop, as it has been a while since I last tried using it.