plottraffic.py 文件源码

def __init__(self):
        self._backgroundImage = "../roadlanes.png"
        self._roadLength = 5e4
        self._roadWidth = self._roadLength  * 663./1657
    self._laneWidth = self._roadWidth / 4.
        self._trafficManager = None
        self._pw = pg.plot(pen='y', symbol='t', symbolSize=200)
    x = Image.open('../roadlanes.png')
    im = np.array(x)

        self._backgroundImage = pg.ImageItem(im, autoDownsample = True, autoLevels = False)