I want a coordinate system that is kind of radial/circular and it should have no visible border, mirroring or repetition of any kind. I did my best to search, but only found a few things about polar coordinates. This was of course not helpful. I have tried previously, and these are the only two that I was able to create.
In this, as one can see, the problem is the clearly visible border.
This one does not have any, border but the issue is that it's mirrored.
Is there a way to avoid any of these issues?
(I know about mixing a gradient texture with the coordinates, but that does not give accurate circular coordinates)