I have now added radial gradients to my FFT Paint application. Here, I wiped out an image entirely and painted my own data using only the new gradient tool to come up with this starting point:
This is what it looks like if I do the inverse FFT of that data. It’s not an incredibly interesting result, but it does show the power.
Here is another example of a starting point made entirely with the gradient paint tool:
And, its resulting image when I do the inverse transform: