http://www-ui.is.s.u-tokyo.ac.jp/~takeo/teddy/teddy.htm
http://www-ui.is.s.u-tokyo.ac.jp/~takeo/teddy/teddy/teddy.html
Thought it might be interesting for some.
Cheers,
Luis.
Wow, cool!
I guess there had to be a few people out there who hadn’t heard of Takeo’s work yet. 
You might also be interested in this little bit of inquiry by Takeo (My Research Theme) that appears to have inspired the recently-Google-acquired SketchUp3D (http://sketchup.google.com).