Constructing a free ArchiCAD alternative

Hello,
together a couple of university mates we talked about a possible free (as in freedom) ArchiCAD alternative. There are several free CAD out there but none is free for architects/engineers. The project is too big and ambitious, but I wanted to give OpenGL a shot with this excuse to learn something new.

I’ve started two projects:

• Corraza, the OpenGL framework for editing 3d objects and exporting the scene graph to ray tracing software… think about a very very very minimal blender but as library

• Spadi, the GTK+ application that runs on top of Corraza

You can find a video here to see what it can do now, after a week of development.
There’s no code published at the moment, contact me if you would like to join the development.

Stay tuned.