Daniele Morabito

Actually, something like [http://mt1.google.com/vt/lyrs=y&x=1325&y=3133&z=13](url) works without any API key, I tried to use it with `TMSSource` that works but sometimes return error `Too many requests`. Whatever, I tried to implement...

> You could compute the zoom, knowing the size of the root bbox (aka the earth). Something like Math.round(bbox_root.x / bbox_local * some_factor_to_determine) ? Thank you for the tip, I...