ipe : Drawing editor for creating figures in PDF or PS formats ( http://ipe.otfried.org/ )
libspiro : A spline computation library ( https://github.com/fontforge/libspiro )
pqiv : powerful GTK based command-line image viewer with a minimal UI ( https://github.com/phillipberndt/pqiv http://www.pberndt.com/Programme/Linux/pqiv/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a mv
For Paludis use this rsync : rsync://gentoo.zugaina.org/mv-portage
If you have a problem : ycarus(-at-)zugaina.org