How to count if circle (cv2.circle) cross the line (cv2.line)

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I am able to create rectangles, circle(circle on a object) and a line, after that i want to count that if circle cross the line on a video. below is the example code:

while True:
    ret, frame = cap.read()

    imgray = cv2.cvtColor(frame,cv2.COLOR_BGR2GRAY)
    fgmask1 = cv2.GaussianBlur(imgray, (7,7), 0)

    fgmask = fgbg.apply(fgmask1)

    erode=cv2.erode(fgmask,None,iterations=3)
    moments=cv2.moments(erode,True)
    #area=moments['m00']
    if point1 and point2:
        cv2.line(frame, point1, point2, (0, 255, 0), 3)


    contours, hierarchy = cv2.findContours(erode, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)

    try:
        hierarchy = hierarchy[0]
    except:
        hierarchy = []

    for contour, hier in zip(contours, hierarchy):
        (x, y, w, h) = cv2.boundingRect(contour)
        if w > 80 and h > 80:
            cv2.rectangle(frame, (x,y), (x+w,y+h), (0, 255, 0), 2)

            x1=w/2
            y1=h/2
            cx=x+x1
            cy=y+y1
            centroid = (cx,cy)

            moments=cv2.moments(contour)
            area=moments['m00']

            if moments['m00'] >=minArea:
                x=int(moments['m10']/moments['m00'])
                y=int (moments['m01']/moments['m00'])
                if x<lineCount:
                    sen=sen<<1
                else:
                    sen=(sen<<1)|1
                sen=sen&0x03
                if sen==1:
                    counter=counter+1   

                cv2.circle(frame,(int(cx),int(cy)),1,(0,0,255),2)

            cv2.line
            font = cv2.FONT_HERSHEY_SIMPLEX
            cv2.putText(frame,'counter='+str(counter), (10,30),font,1, (255, 0, 0), 2)

    cv2.imshow("App", frame)

Point1 and point2 are mouse click callback. Is it possible to count if object cross the cv2.line. Or is there any solution other than that.