- most of the time the current transform is a scaling one (modulo translation), hence it's possible to avoid to apply the transform on each bbox and then apply it a posteriori; - compute the bbox when it's possible in the worker.
- most of the time the current transform is a scaling one (modulo translation), hence it's possible to avoid to apply the transform on each bbox and then apply it a posteriori; - compute the bbox when it's possible in the worker.