test_camera.py 文件源码

def reset_tracker(event, x, y, flags, param):
    global tracker, init_rect, is_cropping
    if event == cv2.EVENT_LBUTTONDOWN and not is_cropping:
        is_cropping = True
        init_rect[0:2] = [x, y]
    elif event == cv2.EVENT_LBUTTONUP and is_cropping:
        is_cropping = False
        init_rect[2:4] = [x, y]
        init_rect[0::2].sort()
        init_rect[1::2].sort()
        init_rect[2:4] -= init_rect[0:2]
        if all(init_rect[2:4] > [5, 5]):
            print("Reset target:", init_rect)
            tracker.set_target(init_rect)