Help...Voronoi Volume with Attractor Points

Hi, 

I am playing around with filling a volume with a voronoi mesh and then vary the density of the mesh by using some sort of attract point/line to move/add new points thus changing the density of the mesh.  

I have filled the volume with a voronoi mesh but I CAN'T figure out how to create an attraction point and move the points I created with a population geometry.  I was trying to use Nudibranch plugin but I'm stuck with using it.  

Does anyone have any other ideas in how to create this effect or any suggestions in how to get what I was trying to do to work. 

Thanks,