an animated gif showing a disc of dots. They're relatively evenly spread - you wouldn't pick out the centre as more or less dense than anywhere else. There is a somewhat regular pattern to them though, with repeated gaps.

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   James Brown (ancientjames@mastodon.social)'s status on Friday, 30-Aug-2024 17:18:26 JST James Brown

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   The real improvement comes when you adjust the update rate for each column to match the length of the track they have to sweep out. Instead of wrapping around when you reach the last column, you wrap around when your counter reaches the square of the number of columns, and you update the column corresponding to the integer square root of the counter. This gets rid of the bright dense region in the middle, and adds more updates out at the edges making them less sparse.