Some fixes from mitosis branch: Don't run ChangeTrackID if current and desired...

Some fixes from mitosis branch: Don't run ChangeTrackID if current and desired track are the same and avoid (startHash <= 0), also fix in ProcessNewborns to reflect GetHullID returning 0 if no hull is found.

src/MATLAB/+Families/ProcessNewborns.m

@@ -65,7 +65,7 @@ end
 %         parentHullID = Tracks.GetHullID(CellTracks(trackID).startTime-1, CellTracks(trackID).parentTrack);
 %         childHullID = Tracks.GetHullID(CellTracks(trackID).startTime, trackID);
 %         
-%         if ( isempty(parentHullID) || GraphEdits(parentHullID,childHullID) > 0 )
+%         if ( (parentHullID == 0) || GraphEdits(parentHullID,childHullID) > 0 )
 %             continue;
 %         end
 %         
@@ -185,7 +185,7 @@ for i=1:size
     end
     
     % Parent track must have a hull in the mitosis frame
-    if ( isempty(Tracks.GetHullID(CellTracks(childTrackID).startTime, parentTrackID)) )
+    if ( Tracks.GetHullID(CellTracks(childTrackID).startTime, parentTrackID) == 0 )
         continue;
     end
     

src/MATLAB/+Tracks/ChangeTrackID.m

@@ -40,6 +40,10 @@ if (time<CellTracks(desiredTrack).startTime)
     error('DesiredTrack %d has to exist prior to time %d',desiredTrack,time);
 end
 
+if ( currentTrack == desiredTrack )
+    return;
+end
+
 droppedTracks = [];
 currentParent = [];
 
@@ -55,6 +59,10 @@ end
     end
     %Gather the hulls to move and leave the rest on the currentTrack
     startHash = time-CellTracks(currentTrack).startTime+1;
+    if ( startHash <= 0 )
+        startHash = 1;
+    end
+    
     endHash = length(CellTracks(currentTrack).hulls);
     hulls = CellTracks(currentTrack).hulls(startHash:endHash);
 % else