As you can see in the image, it's possible to translate the position of a vertex group of an object with Geometry Nodes thanks to the Selection input of the
Set Position node and the Input Attribute Toggle of the Geometry Nodes modifier:
How can I achieve the same with a (not existing) node like
Set Rotation? Note that the rest of the mesh is adjusted too like in
Set Position, like this:
Transform Geometry node has no Selection input. I tried several attempts of separating the vertex group geometry and joining it afterwards, but that does not respect the connections between the separated parts (well, which makes sense...). The
Rotate Instances node has a Selection input, but that doesn't do anything with vertex groups and gives me a warning I don't understand. The closest I get to can be seen in the right part of the following image, but now I'm left with reconstructing through bridging the two faces, which may be possible (other question) but seems overkill to me.
I feel like I am overlooking something obvious, but how to get a straightforward vertex group only