Adjusts the columns of nodes in the network to produce a layout which is tightly packed. The idea is that the network can be fragmented from a given column in the following way: all nodes "behind" the column are placed into a single component, and the remainder of the network is divided into connected components. Each of these new components can be examined, and those that can be merged with the given column do so.

protected virtual void ComponentPack( 
   int direction
)