Is there a SubD tool that unifies, like the opposite of Subdivide?

[Bogdan_Chipara]

I see that Subdivide SubD splits a face in four, but what about the opposite? Unify four faces into a single one?

[DanielPiker]

A command opposite to SubDivide would be great

I wrote something a while back I’d been meaning to add as a tool, but here’s a script in case it is useful to anyone. Given a mesh which was generated by a Catmull-Clark subdivision, it groups together faces into 4s to recreate the coarse faces. Just doing this gets you the topology, but the shape will not be the same as the original mesh before subdivision, since the vertices get moved by the smoothing part of the subdivision. Then I found and implemented bits of this paper [Lanquetin and Ne…

[Bogdan_Chipara]

I think this Reverse Catmull Clark might be useful when modeling.
I see it on the add list since 2020. What happened ?

[BrianJ (Brian James)]

Thanks, I bumped one of the open feature requests for this…
https://mcneel.myjetbrains.com/youtrack/issue/RH-55563