public static void PreOrder <T, U>(Segment s0, Segment s1, ref T context, U inData, Visitor4 <T, U> visitor, int mask, ref HashSet <Segment> visited)
{
if (s1.Highway && (mask & HIGHWAYS_MASK) == 0 || !s1.Highway && (mask & STREETS_MASK) == 0)
{
return;
}
if (visited.Contains(s1))
{
return;
}
visited.Add(s1);
U outData;
if (s1.Destinations.Count == 0)
{
if (!visitor(s1, null, ref context, inData, out outData))
{
return;
}
}
else
{
if (!visitor(s0, s1, ref context, inData, out outData))
{
return;
}
foreach (var s2 in s1.Destinations)
{
PreOrder(s1, s2, ref context, outData, visitor, mask, ref visited);
}
}
}
public static void PreOrder <T, U>(Segment s0, ref T context, U inData, Visitor4 <T, U> visitor, int mask, ref HashSet <Segment> visited)
{
PreOrder <T, U>(null, s0, ref context, inData, visitor, mask, ref visited);
}