def __init__(self, geometry_name, num_slots=-1):
self.id = str(uuid.uuid1())
if num_slots == -1:
self.num_slots = Geometry.get_num_slots(geometry_name)
else:
self.num_slots = num_slots
self.type = geometry_name
self._geometry = None
# Initialize slots
self._slots = [Slot(i) for i in range(1, self.num_slots+1)]
