"Kenneth"  wrote in message
<web.497d0d60b528db0df50167bc0@news.povray.org>:
> But isn't that what happens when needing just one real rand value per
> frame? Given Chris B's #while loop, each new animation frame discards all
> the previous frames' rand values, in order to come up with a fresh new
> one. (That's what I meant by 'wasting values.') So by frame 100, the
> previous 99 generated values have been discarded, as a necessity.

They have not been wasted, they have been used in the previous frames.

There is something that was wasted, though: CPU time: in frame 100, CPU time
is used to compute the random values #1 ... #99 in order to get to the #100
although they have already been computed for frame 99.

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