public void AccumulateChildren(out List <List <VoxelizingOctreeCell> > cellList)
{
cellList = new List <List <VoxelizingOctreeCell> >();
for (int i = 0; i < MaxLevels; i++)
{
cellList.Add(new List <VoxelizingOctreeCell>());
}
Root.AccumulateChildren(cellList, 0);
}