def clearScene(self, bkgcolor=None):
    '\n        Deletes the scene image and fills the label with bkgcolor.\n        If bkgcolor is None or an invalid color, the color used is \n        the one used from the last clearScene or redrawScene call \n        with a valid color (or opaque white if a color has never \n        been specified).\n        '
    if bkgcolor:
        if bkgcolor.isValid():
            self.__lastclearcolor = bkgcolor
    self.__sceneimage = None
    self.__scenedata = None
    self.updateScene()
Deletes the scene image and fills the label with bkgcolor.
If bkgcolor is None or an invalid color, the color used is 
the one used from the last clearScene or redrawScene call 
with a valid color (or opaque white if a color has never 
been specified).
def clearScene(self, bkgcolor=None):
    '\n        Deletes the scene image and fills the label with bkgcolor.\n        If bkgcolor is None or an invalid color, the color used is \n        the one used from the last clearScene or redrawScene call \n        with a valid color (or opaque white if a color has never \n        been specified).\n        '
    if bkgcolor:
        if bkgcolor.isValid():
            self.__lastclearcolor = bkgcolor
    self.__sceneimage = None
    self.__scenedata = None
    self.updateScene()