use groupItem for tracked object

pyqtUsrObj.py

@@ -182,10 +182,10 @@ class Fiducial(pg.ROI):
 class Grid(pg.ROI):
   '''a grid'''
 
-  def __init__( self, pos=(0,0), size=(30,20), cnt=(6,4), ficucialScale=5, **kargs):
+  def __init__( self, pos=(0,0), size=(30,20), cnt=(6,4), fiducialSize=.2, **kargs):
     pg.ROI.__init__(self, pos, size, **kargs)
     self._cnt=cnt
-    self._fidScl=ficucialScale
+    self._fidSz=fiducialSize
     self.addScaleHandle([1, 1], [0, 0])
     self.addScaleHandle([0, 0], [1, 1])
     self.addScaleRotateHandle([1, 0], [0, 0])
@@ -206,9 +206,8 @@ class Grid(pg.ROI):
       y=i*py
       p.drawLine(pg.Point(0, y), pg.Point(sz[0] ,y ))
 
-    fidScl=self._fidScl
-    rx=fidScl*r.width()/sz[0]
-    ry=fidScl*r.height()/sz[1]
+    fidSz=self._fidSz
+    rx=ry=fidSz/2
     p.setPen(pg.mkPen(width=1, color=(255, 0, 0)))
     for j in range(ny):
       y=j*py
@@ -222,7 +221,7 @@ class Grid(pg.ROI):
     #p.drawRect(0, 0, 1, 1)
 
   def __repr__(self):
-    s=f'{self.__class__.__name__}:(pos:{itr2str(self.pos())}, size:{itr2str(self.size())}, cnt:{self._cnt}, ficucialScale:{self._fidScl}}}'
+    s=f'{self.__class__.__name__}:(pos:{itr2str(self.pos())}, size:{itr2str(self.size())}, cnt:{self._cnt}, fidSize:{self._fidSz}}}'
     return s
 
   def obj2json(self,encoder):
@@ -231,7 +230,7 @@ class Grid(pg.ROI):
       'pos':tuple(self.pos()),
       'size':tuple(self.size()),
       'cnt':self._cnt,
-      'ficucialScale':self._fidScl
+      'fiducialSize':self._fidSz
     }
     return jsn
 
@@ -406,7 +405,8 @@ class FixTargetFrame(pg.ROI):
     r=QtCore.QRectF(0, 0, sz[0], sz[1]).normalized()
     p.setRenderHint(QtGui.QPainter.Antialiasing)
     p.setPen(self.currentPen)
-    p.drawRect(0, 0, int(sz[0]), int(sz[1]))
+    #p.drawRect(0, 0, int(sz[0]), int(sz[1]))
+    p.drawRect(r)
 
     dscr=self._dscr
     objSz=dscr['size']