private static int expansionNeeded(BoundedCube one, BoundedCube two)
	{
		int total = 0;

		if(two.lx < one.lx) total += one.lx - two.lx;
		if(two.rx > one.rx) total += two.rx - one.rx;

		if(two.ty < one.ty) total += one.ty - two.ty;
		if(two.by > one.by) total += two.by - one.by;

		if(two.iz < one.iz) total += one.iz - two.iz;
		if(two.oz > one.oz) total += two.oz - one.oz;

		return total;
	}