Why the rotate_center is always [100,100] in both tiny and base config?

[FlyingSong888]

I found that the setting "rotate_prev_bev" in config is always set to True, which means the prev bev feat needs to be rotated. But the rotate_center is always equal to [100,100] in both tiny config and base config, i think this rotate center is only suitable for base config which bev feature size is equal to 200x200.