love this sort of project! thank you to @papipupepappa for the original - for putting this remix-welcoming energy into 'spinning gradient'. play with the sliders - and see inside, of course. ^^ some things of note: - rather than convert "back" from x/y to a column/row index, then divide according to number of columns and rows... we simply use x/y position directly. yet it'd have the same effect: no matter what block size - "resolution" - how spirally the spiral is... is in terms of screen space! ^^ - if you converted to col/row index n' then did *not* factor into number of rows/columns, then a smaller block size would include more "twists". - we suspect a positive "spiral factor" is exactly "equal" to the opposite (negative) value. only, time-delayed, perhaps? - playing with contrast and speed here are both quite fun, of course
