I made an ebuild for Dr. Geo, a tool which makes it easy to draw geometrical figures. It has a GTK2 interface and the option to export the graphs into Latex or Postscript. I think a good place for it would be app-sci. It compiles for x86, but I don't know about other architectures.
Created attachment 23748 [details] the build
drgeo 0.9.12 now in portage.