I released
oUF_Donut (alpha) today.
It shows how to do a circular unitframe layout with oUF using ScrollFrames as described
here.
Units visible in the screenshot from left to right: player, pet, targettarget, target
yellow = castbar, blue = powerbar, green = healthbar
Addon:
http://www.wowinterface.com/download...oUF_Donut.html
Technique:
http://www.wowinterface.com/forums/s...ad.php?t=45918
Being alpha the current layout is pretty rudimentary. It focuses on showing how to create and update all the ring segments.
Additionally it shows how to use ring templates for ring configuration on specific units.
To make the rings more appealing fore and background textures can be added later. The frames to hold those textures are already part of the framestack. Same goes for font strings and castbar icon.
Each ring (health, power, cast) consists of a background, filling and spark texture.