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James Gregory 2013-12-31 11:06:31 +11:00
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@ -68,9 +68,13 @@ VGA, I found that the faster rotation was too fast! The ball spun so
rapidly that the eye couldn't blend successive images together into
continuous motion, much like watching a badly flickering movie.
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![](images/i.jpg) *So the second lesson is that either too little or too much speed can destroy the illusion. Unless you're antialiasing, you need to tune the shifting of your images so that they're in the "sweet spot" of apparent motion, in which the eye is willing to ignore the jumping and aliasing, and blend the images together into continuous motion. Only experience can give you a feel for that sweet spot.*
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> ![](images/i.jpg)
> So the second lesson is that either too little or too much speed can
> destroy the illusion. Unless you're antialiasing, you need to tune the
> shifting of your images so that they're in the "sweet spot" of apparent
> motion, in which the eye is willing to ignore the jumping and aliasing,
> and blend the images together into continuous motion. Only experience
> can give you a feel for that sweet spot.
#### Fixed-Point Arithmetic, Redux {#Heading4}