word_renderer.py 文件源码

def get_bordershadow(self, bg_arr, colour):
        """
        Gets a border/shadow with the movement state [top, right, bottom, left].
        Inset or outset is random.
        """
        bs = self.borderstate.get_sample()
        outset = bs['outset']
        width = bs['width']
        position = bs['position']

        # make a copy
        border_arr = bg_arr.copy()
        # re-colour
        border_arr[..., 0] = colour
        if outset:
            # dilate black (erode white)
            border_arr[..., 1] = ndimage.grey_dilation(border_arr[..., 1], size=(width, width))
            border_arr = self.arr_scroll(border_arr, position[0], position[1])

            return border_arr, bg_arr
        else:
            # erode black (dilate white)
            border_arr[..., 1] = ndimage.grey_erosion(border_arr[..., 1], size=(width, width))
            return bg_arr, border_arr