Are there any tools for making irregular polygons regular? Are there any tools in Blender that take irregular polygons and make them regular (approximate a circle)? I'm specifically looking for a solution that works with preexisting polygons. Also, it would be nice if it keeps the overall position after making it regular.



Irregular Polygons



Regular Polygons
You can use LoopTools addon, which is already with the official Blender builds.

Enable this addon from the Add-Ons list, then select the target face, then W > LoopTools > Circle, which will distribute vertices circularly and evenly.