public TrackNodeCurve GetPreviousCurve(TrackNodeCurve current)
{
var index = GetTrackCurves.IndexOf(current);
if (index - 1 < 0)
{
var previousCurve = current.SegmentModify.GetPreviousSegment(true);
if (previousCurve != null)
{
return(previousCurve.GetLastCurve);
}
}
return(GetTrackCurves[index - 1]);
}
public TrackNodeCurve GetNextCurve(TrackNodeCurve current)
{
var index = GetTrackCurves.IndexOf(current);
if (index + 1 >= GetTrackCurves.Count)
{
var nextSegment = current.SegmentModify.GetNextSegment(true);
if (nextSegment != null)
{
return(nextSegment.GetFirstCurve);
}
return(null);
}
return(GetTrackCurves[index + 1]);
}
