I’m trying to make a behaviour of different curves keeping a given distance (0 in my case) from each other. In a sense, they should be able to slide over each other but keep the distance close to the given value. It seems there’s no existing goal for this 
The thing that comes to mind is to determine the segments of polylines that contain the proximity points and make all the points on the polylines move in a fashion that brings those segments close to each other.
Any ideas on how to achieve this?