def view_xy(self, negative=False):
        """View the XY plane"""
        vec = np.array([0,0,1])
        viewup = np.array([0,1,0])
        if negative:
            vec = np.array([0,0,-1])
        return self.view_vector(vec, viewup)
def view_xy ( self , negative = False ) : vec = np . array ( [ 0 , 0 , 1 ] ) viewup = np . array ( [ 0 , 1 , 0 ] ) if negative : vec = np . array ( [ 0 , 0 , - 1 ] ) return self . view_vector ( vec , viewup )
View the XY plane