private static void FixDirectionRecursively(ICollection <Subpath> subpaths, IEnumerable <TreeNode <Subpath> > children, SubpathDirection?parentDirection)
{
foreach (var node in children)
{
var child = node.AssociatedObject;
SubpathDirection?childDirection = SubpathDirectionCalculator.CalculateDirection(child);
if (parentDirection != null)
{
if (childDirection == parentDirection)
{
subpaths.Remove(child);
subpaths.Add(SubpathDirectionReverser.ReverseDirection(child));
}
childDirection = null;
}
FixDirectionRecursively(subpaths, node.Children, childDirection);
}
}
public static bool EqualsIgnoreDirection(this Subpath subpath1, Subpath subpath2)
{
if (subpath1.Segments.Count != subpath2.Segments.Count ||
subpath1.IsClosed != subpath2.IsClosed)
{
return(false);
}
if (subpath1.StartPoint == subpath2.StartPoint &&
subpath1.EndPoint == subpath2.EndPoint &&
Equals(subpath1, subpath2))
{
return(true);
}
if (subpath1.StartPoint == subpath2.EndPoint &&
subpath1.EndPoint == subpath2.StartPoint &&
Equals(subpath1, SubpathDirectionReverser.ReverseDirection(subpath2)))
{
return(true);
}
return(false);
}
public void Add(Subpath subpath)
{
_subpaths.Add(subpath);
_reverseSubpaths.Add(SubpathDirectionReverser.ReverseDirection(subpath));
}
