private void ReduceInto(List <Ring> res)
{
Ring resRing = ring;
// while sorting here is a decent solution,
// it is not complete, and it can be fooled.
foreach (var child in ChildRingSorter.Sort(this))
{
resRing = JoinRings(resRing, child.ring);
child.ReduceChildrenInto(res);
}
res.Add(resRing);
}
// ------------------------------------
// Reduce to simple rings recursively
// ------------------------------------
public List <Ring> Reduce()
{
List <Ring> res = new List <Ring>();
Ring resRing = ring;
// while sorting here is a decent solution,
// it is not complete, and it can be fooled.
foreach (var child in ChildRingSorter.Sort(this))
{
resRing = JoinRings(resRing, child.ring);
child.ReduceChildrenInto(res);
}
res.Add(resRing);
return(res);
}