'**SUMMARY**
Draw the center of the object on the current frame.
**PARAMETERS**
* *color* - The color to draw the object. Either an BGR tuple or a member of the :py:class:`Color` class.
* *rad* - Radius of the circle to be plotted on the center of the object.
* *thickness* - Thickness of the boundary of the center circle.
**RETURNS**
Nada. Nothing. Zilch.
**EXAMPLE**
>>> while True:
... img1 = cam.getImage()
... ts = img1.track("camshift", ts1, img, bb)
... ts.draw() # For continuous tracking of the center
... img = img1'

def draw(self, color=Color.GREEN, rad=1, thickness=1):

    f = self[(-1)]
    f.image.drawCircle(f.center, rad, color, thickness)
