Square 2 Circle
Click to See Example
This is the first of two methods I use when I want to be able to control the flow of mesh lines within a circle I want to mesh.
As you are aware adding mesh lines to a Circle object restricts you to any sort of straight line flow.
There for I do this and have been happy with the results.
For and example of where I use this click here or on the image.
Hope this makes some sort of sence?