Action centers for transformations

[mestaritonttu]

Reference from Modo:
https://learn.foundry.com/modo/content/help/pages/modeling/action_centers.html

Probably the most useful ones would be selection and local.

By using action center selection, the transformation widget would center to the selection and align its axis to the average of the selected points (or edges).

Action center local would allow scaling and rotation of multiple selections around their local axes.

Modo does separate the centering and the setting of the axis, so it is possible to center and still use world axis.

Afterthought as an edit: selections here could be either point selections or multiple objects.

Videos for reference:
https://www.youtube.com/watch?v=OEdtAPlYHFc
https://www.youtube.com/watch?v=mQOq8-rLqds

[pasbi]

That would be a useful feature.
It's already possible to change the rotation of the transformation (to translate/scale in object/global x/y-direction).
It should be fairly simple to integrate a choice of transformation origin to the user interface.
I'd put the option into the tool properties, unless you have a better idea?