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Old 05 August 2012, 17:18   #1
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Join Date: Aug 2006
Location: Scunthorpe/United Kingdom
Posts: 899
Need explanation of a demo effect - screen zoom/rotate

Hi all -

There were a few demos back in the day that used this effect. It appeared to be random, and a 50% dither was employed. The screen would rotate and gradually expand, creating swirls of colour as it did.

I kind of got the idea that it was rotating the screen and pasting it back in a feedback loop, but I'm not so sure.

Anyone know how it was done? I can't recall any of the actual demos that did this, but one that sticks in my mind used pink and a kind of light green colour for the effect.


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