private uint CalculateNumQuadTreeNodes()
        { 
            float nodeSize = 600;
 
            uint numNodes = 1;
 
            while (nodeSize != 10&& nodeSize > 0)
            {
                nodeSize /= 2;
 
                numNodes += (uint)((600/ nodeSize) * (600/ nodeSize));
            }
 
            return numNodes;
        }