idproperty.py 文件源码

def create_getter(data_field, value_key):

    def fn(self):
        data = getattr(bpy.context.scene, data_field)

        ob_id = self.get(value_key, None)

        id_to_hash = ID_TO_HASH[data_field]
        hash_to_name = HASH_TO_NAME[data_field]

        ob_hash = id_to_hash.get(ob_id, None)
        ob_name = hash_to_name.get(ob_hash, None)
        exists = ob_name is not None and ob_name in data

        if not exists:
            for name, ob in data.items():
                if ob_hash == hash(ob):
                    hash_to_name[ob_hash] = name
                    ob_name = name
                    break

        if ob_name is None:
            ob_name = ""
        return ob_name
    return fn