Feedback trouble

Hi all,
I am working with feedback for a project trying to recreate the spiral of old movie VERTIGO. I’ve set interpolation to nearest pixel because I want to keep the lines sharp while doing some rotation. However this gives me a strange effect where only parts of the canvas is rotating.
It’s a really simple project - I would appreciate if somebody could take a look for me.
vertigo.2.toe (3.93 KB)

Hey,

the issue is the very small rotation in combination with the nearest pixel. If you rotate a pixel close to the center with the pivot at the center, a very small rotation such as yours (0.09 degrees per frame) will hardly move the pixel. Now with nearest pixel it will clamp to the closest pixel and hence there is no movement.

Does that make sense?

Best
Markus