public bool CanLinkCleanly(HamTimelineNode parent, HamTimelineNode child, int i = 0)
{
int formerChildID = parent.GetDescendant(i);
if (formerChildID == InvalidID) { return true; }
return (child.GetFreeDescendantSlot() != -1);
}
public void LinkNodes(HamTimelineNode parent, HamTimelineNode child, int i = 0)
{
// Check for previous linkage
int formerChildID = parent.GetDescendant(i);
if (formerChildID != InvalidID)
{
HamTimelineNode formerChild = this.Nodes[formerChildID];
// Remove former linkage
formerChild.PreviousNodeIDs.Remove(parent.ID);
// Set former child's parentage to the new child
int slot = child.GetFreeDescendantSlot();
child.SetDescendant(formerChild.ID, slot);
formerChild.PreviousNodeIDs.Add(child.ID);
}
// Set new child's parentage and overwrite parent linkage
parent.SetDescendant(child.ID, i);
child.PreviousNodeIDs.Add(parent.ID);
this.NodeLinkageDirty = true;
SanityCheck();
}