ChangeTrackParent.m

function ChangeTrackParent(parentTrackID,time,childTrackID)
%This will take the childTrack and connect it to the parent track.  It also
%takes the hulls that exist in the parent track that are come after the
%childTrack root and makes a new track with said hulls.  When finished
%there should be a new track and the child track that are siblings with the
%parent track being the parent.

%--Eric Wait

global CellTracks CellFamilies

%see if the child exists before time
if(time > CellTracks(childTrackID).startTime)
    newFamilyID = RemoveFromTree(time,childTrackID,'yes');
    childTrackID = CellFamilies(newFamilyID).rootTrackID;
end

%find where the child should attach to the parent
hash = time - CellTracks(parentTrackID).startTime + 1;
if(hash <= 0)
    error('Trying to attach a parent that comes after the child');
elseif(hash <= length(CellTracks(parentTrackID).hulls))
    parentHullID = CellTracks(parentTrackID).hulls(hash);
    siblingTrackID = SplitTrack(parentTrackID,parentHullID); % SplitTrack adds sibling to the parent already
else
    %just rename the child to the parent
    ChangeLabel(time,childTrackID,parentTrackID);
    return
end

childIndex = length(CellTracks(parentTrackID).childrenTracks) + 1;
CellTracks(parentTrackID).childrenTracks(childIndex) = childTrackID;

%clean up old parent
if(~isempty(CellTracks(childTrackID).siblingTrack))
    CellTracks(CellTracks(childTrackID).siblingTrack).siblingTrack = [];
    ChangeLabel(CellTracks(CellTracks(childTrackID).siblingTrack).startTime,...
        CellTracks(childTrackID).siblingTrack,CellTracks(childTrackID).parentTrack);
    index = CellTracks(CellTracks(childTrackID).parentTrack).childrenTracks == childTrackID;
    CellTracks(CellTracks(childTrackID).parentTrack).childrenTracks(index) = [];
end
CellTracks(childTrackID).parentTrack = parentTrackID;

%Detatch childTrack and clean up child's family
oldFamilyID = CellTracks(childTrackID).familyID;
newFamilyID = CellTracks(siblingTrackID).familyID;

% CellTracks(childTrackID).familyID = newFamilyID;

ChangeTrackAndChildrensFamily(oldFamilyID,newFamilyID,childTrackID);

CellTracks(childTrackID).siblingTrack = siblingTrackID;
CellTracks(siblingTrackID).siblingTrack = childTrackID;

end