Lately, I'm rewriting the geometric engine of Dr Genius. It really needs some clean-up. Also i must credit Ilya Baran for its project Kseg, an interactive geometry free software under KDE. I don't get a chance to try it but looking at the source code, I saw very kind idea that I will use in Dr Genius. Good luck Ilya in your project (http://www.mit.edu/~ibaran). It seems we get very low activity in Dr Genius since one month. I hope my recent commits will remotive the team.