Method _init_draw

lib/matplotlib/animation.py:1530–1544

(self)

        super().__init__(fig, *args, **kwargs)

    def _init_draw(self):
        super()._init_draw()
        # Make all the artists involved in *any* frame invisible
        figs = set()
        for f in self.new_frame_seq():
            for artist in f:
                artist.set_visible(False)
                artist.set_animated(self._blit)
                # Assemble a list of unique figures that need flushing
                if artist.get_figure() not in figs:
                    figs.add(artist.get_figure())

        # Flush the needed figures
        for fig in figs:
            fig.canvas.draw_idle()

    def _pre_draw(self, framedata, blit):
        """Clears artists from the last frame."""