My calculation is working and the connections gets drawn, but there is still 2 small issue I would like Steffi to look into. 1 is with the svg and 1 is with updating (eg gaps between coins). The coinSize is updated but there is some code in the afterRender (not from me) which needs to be called as well. If you drag a actor the drawing works out again. If it's urgent, I can make a pull request. The 2 issue aren't a big deal and could be fixed later...