Sometimes publications require 3D models to be shown. Modern visualisation utilities mostly use raster graphics. In the same time many models can be displayed as set of lines and Bezier curves. The ProBez project intended to create software, which will approximate some 3D models (e.g. molecules) with lines and Bezier curves.
Compile sources with make place probez-gtk in the search path of executables and libprobez.so - in the search path of libraries ;-)
Wait couple of weeks while it become usable ;-) The repo is supplied by an examples of a models. Just open a model and drag mouse on the program's window.