fix src_is_vertical init

    shadow_strength: float = 1.

    shadow_color: Tuple = (0, 0, 0)

    shadow_offset: List = field(default_factory = lambda : [0., 0.])

    src_is_vertical: bool = False

    src_is_vertical: bool = None

    region_mask: np.ndarray = None

    region_inpaint_dict: Dict = None

            self.distance = np.array(self.distance, np.float32)

        if self.vec is not None:

            self.vec = np.array(self.vec, np.float32)

        if self.src_is_vertical is None:

            self.src_is_vertical = self.vertical

    def adjust_bbox(self, with_bbox=False, x_range=None, y_range=None):

        lines = self.lines_array().astype(np.int32)