Auto polygroup from extraction

[jBibble]

Hi.

Let’s say I create a sphere 3d, then mask the top half then extract either half. From the extraction half, is there a way to automatically create polygroups from that extraction that separates (makes a polygroup of) the top, side and underside bottom on the fly?

Thanks

[system]

The great thing about extraction that it comes with polygroups always. Try to adjust thickness slider so you will be able to see those polygroups better.