protected internal override WeightedPath FetchNextOrNull()
{
if (_shortestIterator == null)
{
_shortestPaths = new List <WeightedPath>();
while (_paths.MoveNext())
{
WeightedPath path = new WeightedPathImpl(_costEvaluator, _paths.Current);
if (NoneStrictMath.compare(path.Weight(), _foundWeight, _epsilon) < 0)
{
_foundWeight = path.Weight();
_shortestPaths.Clear();
}
if (NoneStrictMath.compare(path.Weight(), _foundWeight, _epsilon) <= 0)
{
_shortestPaths.Add(path);
}
}
_shortestIterator = _shortestPaths.GetEnumerator();
}
//JAVA TO C# CONVERTER TODO TASK: Java iterators are only converted within the context of 'while' and 'for' loops:
return(_shortestIterator.hasNext() ? _shortestIterator.next() : null);
}
public override IEnumerable <Relationship> Expand(Path path, BranchState <double> state)
{
if (NoneStrictMath.compare(state.State, ShortestSoFar.doubleValue(), Epsilon) > 0 && StopAfterLowestCost)
{
return(Collections.emptyList());
}
return(Source.expand(path, state));
}
public override IEnumerable <Relationship> Expand(Path path, BranchState <double> state)
{
double thisState = state.State;
ThisSideShortest.Value = thisState;
if (NoneStrictMath.compare(thisState + OtherSideShortest.doubleValue(), ShortestSoFar.doubleValue(), Epsilon) > 0 && StopAfterLowestCost)
{
return(Iterables.emptyResourceIterable());
}
return(Source.expand(path, state));
}
public override bool CanBeRuledOut(int numberOfVisits, double?pathPriority, double?oldPriority)
{
return(numberOfVisits > 0 || NoneStrictMath.compare(pathPriority.Value, oldPriority.Value, Epsilon) >= 0);
}