Packing of points

Hi to everyone, i have a problem with my definition in grasshopper basicly what i want to achive is a packing of points according to their repulsion force inside a certain boundary.

So each point have a certain value, lets call it weight, i've made the interconnections between the points (12, 13, 14, 15, 23, 24, 25, 34,35, 45) and assigned a value to this connection which is the sum of the weight of every point; putted it in kangaroo and setted this value as the repulsion strenght. Now... this is working the problem is that i dont have a boundary or something to limit this process so the points are like exploding...

The aim of this process should be create a sort of subdivision of an area according to this strenghts. So the points should move until they find the point of equilibrium between themeselves whithin the boundary. 

Probably it would be much easier with an attractor point but the nice part of this definition is that there isn't any fixed point so each one can rearrange its poisition according to its weight. 

Thanks for the time.