Vector3 ToN3(uint u)
        {
            Vector3 v = Vector3.Zero;
            uint[] SignExtendXY = new uint[]{ 0, 0xFFFFF800 };
            uint[] SignExtendZ = new uint[] { 0, 0xFFFFFC00 };

            uint element = u & 0x7FF;
            v.X = (float)(short)(element | SignExtendXY[element >> 10]) / 1023.0f;
            element = (u >> 11) & 0x7FF;
            v.Y = (float)(short)(element | SignExtendXY[element >> 10]) / 1023.0f;
            element = (u >> 22) & 0x3FF;
            v.Z = (float)(short)(element | SignExtendZ[element >> 9]) / 511.0f;

            return v;
        }