Slit-scan

Ever since reading this blog post : https://magicbeansvfx.wordpress.com/2019/07/31/recreating-2001s-slit-scan-effect-in-nukes-3d-system/
Please have a look at it, and the additional References (especially this one : https://www.youtube.com/watch?v=Wvo7pIbCGeM).

So starting with the base setup provided on the magicbeans github page knew I wanted to try and do something with the Slit Scan idea.
I didn't know what. But I knew I wanted to mess around. And see if there was anything interesting to add to the original ideas. Here's what I ended up with.

How'd we get here. Well for starters a lot of testing different ideas for movement in the texture as well as animating the slit in the card we are shooting through.

From those I ended up settling on these five ideas. there it was just comping everything together

Working with python in the write node was an odd challenge. I would strongly recommend running the code in the script editor and seeing that it is behaving as intended before rendering
The number of times I rendered 100 frames just to realize I was setting the values of the wrong transform node is non zero...
Leaving the view selection in 3D while rendering was also useful to see how the scene was updating after each frame.