Hi Alex,
Thanks for using DropBox and the op-art image. Always loved Bridget Riley.
Here is an example.
https://www.amazon.com/clouddrive/share/ZDAwHsDJKjS0G64FULph6b6jz5sNaOSFCDia4yy85qO
I was not sure if the animation of it was more critical of the effect of depth (smaller in the middle).
The main idea is to use a Twist Deformer, which would do nothing really, but the Falloff will allow for a very distinct distribution of the Twist deformer. This means the more power the Falloff allows for the Twist to work, the stronger the revolving effect will be.
If you combine this with another and a different falloff, you might get even more fine-tuned results. I have left an FFD in it, just in case it could be useful. It is not required.
All the best
P.S.: one moreā¦
https://www.amazon.com/clouddrive/share/7etxtWjmtraQP9R21HsTuwNlGjzYI5ajg2wO0d9lXwq
edited 11:25pm