engauge : Convert an image file showing a graph or map into numbers ( http://markummitchell.github.io/engauge-digitizer/ )
synfig : Vector based 2D animation package ( https://www.synfig.org )
synfigstudio : Vector animation studio ( https://www.synfig.org )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a eroen
For Paludis use this rsync : rsync://gentoo.zugaina.org/eroen-portage
If you have a problem : ycarus(-at-)zugaina.org