void exclusivePush(Stack <ChunkSolutionRect> solution, ChunkSolutionRect entry)
{
if (!entry.IsEmpty)
{
if (solution.Count == 0)
{
solution.Push(entry);
}
else
{
var last = solution.Pop();
last.TrimOff(entry); // the popped off one, AND remove common records from new set
entry.TrimOff(last); // now remove the common records from older one set, from latest set, to make them mutually exclusive
solution.Push(last);
solution.Push(entry);
}
}
}
