Polar coordinates?

[mccartney]

I think it would work great if it came with support for polar coordinates, thus making the pictures more "circular".

[susam]

So instead of evaluating f(x, y, t), we evaluate f(r, θ, t)? That does sound like a very interesting idea. Thanks for sharing! It sounds like it deserves its own project, say, a project named FRΘT. If anyone is interested to implement it, please feel free to reuse the code in this project under the terms of the MIT license.

By the way, I know at least one FXYT demo that makes circular animation with FXYT. Quoting TJSomething:

I got this fun little ripple effect by implementing Newton's method to do a square root.

https://susam.net/fxyt.html#MXN127dDpYN127dDpsN5qDN2qNN6bRRSDRDRSqsN2qRcPSPTN2pdN20rN12p

[mccartney]

Working version

[mccartney]

Actually all the basics like checkers pattern look interesting here:

[susam]

Closing this open issue now. I am glad you came across this project and developed a version of it with polar coordinates.