About This File
Here's a simple script that takes a selection of points and arranges them into a circle. Also works in edge and polygon mode. Make sure you only select the outer elements i.e. select a ring of points. if you don't do this, the plugin won't work.
Copy the script into your scripts folder which you access via the Script menu on the toolbar. Restart C4D and you'll find the script in the Script menu. Do your selection then run the script. Resize the circle of points, edges or polygons using the scale tool. You can change the default size of the circle by editing the script.