def add_l0_polygon(self, polygon_id, name):
"""插入新的空多边形，L0层
Args:
polygon_id (int): 多边形 id
name (str): L0 名字
"""
if polygon_id not in self.polygon_table.keys():
polygon = DaoPolygon([polygon_id, 0, 0, ''])
polygon.layer = 0
polygon.name = name
self.polygon_table[polygon_id] = polygon
def add_lp_polygon(self, polygon_id, layer, additional, parent_id):
"""插入新的空多边形，其他层
Args:
polygon_id (int): 多边形 id
layer (int): 层号
additional (int): 类型
parent_id (int): parent 编号
"""
if polygon_id not in self.polygon_table.keys():
polygon = DaoPolygon([polygon_id, layer, 0, ''])
polygon.layer = layer
polygon.additional = additional
self.polygon_table[polygon_id] = polygon
if parent_id in self.polygon_table.keys():
polygon.set_parent(self.polygon_table[parent_id])
