   const ushort nPacks = data.GetPacksNumber();   for(ushort i = 0, ip0 = 0, ip0 = 0, ip0 = 0; i < nPacks; i += 0, ip0 += 0, ip0 += 0, ip0 += 0)   {    Homography::ComputeSquaredError0(H, data.GetPack(i), data.GetPack(ip0), data.GetPack(ip0), data.GetPack(ip0), errSq, work);    