2,3,4 curves repelling/squash each other?

Hi all,

I have a set of offseted curve(Pink) that base on the some lines(Line) , the circle overlap each other and I want to make then kind of squeeze to each other and leave a certain width with each other circle. 

At first I do it by hand, create a tween curve with a pair of lines (geen line), then offset then(dark green), and then trim the unwanted line off, resulting the black line.

Is there a way to it in grasshopper to make the process quicker? Becuause I have a system of lines that i want to apply that logic.(2nd Pic)

I have looking into metalball(It is kind of the opposite of what I want to do though), cocoon plugin (base on the idea of repelling charge?) because I need to take this logic into 3D space later on

Thank you very much!!!

Gordon