# These are instance variables I will define
# center  - center of the circle
# radius  - radius
class Circle:

    def __init__(self, center, radius):
        self.center = center
        self.radius = radius

    def draw(self, canvas):

        rad = self.radius
        x1 = self.center[0]-rad
        y1 = self.center[1]-rad
        x2 = self.center[0]+rad
        y2 = self.center[1]+rad
        self.itm = canvas.create_oval(x1, y1, x2, y2, fill='green')
        self.canvas = canvas


    def move(self, x, y):
        deltaX = x - self.center[0] 
        deltaY = y - self.center[1]
        self.canvas.move(self.itm, deltaX, deltaY)
        self.center = [x, y]