scene.py 文件源码

def __init__(self, parent=None, fps=30, inbox=None, outbox=None):
        super().__init__(parent)
        self._fps = fps
        self._interval = 1 / fps
        self.startTimer(1000 / fps)

        # Connect signals to slots
        self.clearScreenSignal.connect(self.clearScreen)
        self.restartScreenSignal.connect(self.restartScreen)

        # Creates mail boxes
        self._inbox = inbox = Queue() if inbox is None else inbox
        self._outbox = outbox = Queue() if outbox is None else outbox

        # Init
        self._turtles = QGraphicsSceneGroup(self, inbox=inbox, outbox=outbox)
        self._tasks = deque()
        assert self._turtles.inbox is self._inbox
        assert self._turtles.outbox is self._outbox