Here's an example of use of the "non sin cos" solution.

Look at "Does a snake's tail move?" in p.b.a, an entry at 1/23/99.

I serially rotated part of the snake's tail relative to the rest of the
snake.  I used sin & cos to rotate the snake.  I did not use, however, sin
or cos to displace body segments a distance along a line normal to the
x-axis. Look at my code included therein......

Remco de Korte wrote:

> ingo wrote:
> >
> > Remco de Korte wrote:
> > >
> > >I tried rendering it but I still don't understand.
> > >I admit this doesn't look good, but I didn't know the exact settings
> > for
> > >the animation(clock-values).
> >
> > 0 to 1.
> > I think we're talking a bit "langs elkaar heen".
> > My point with the anim was to illustrate that you can have non-unique
> > x-
> > values because there are no sin / cos functions.
> >
>
> Okidoki, and my point was that using sin or cos you can do everything
> you want 8)
> (as a matter of fact, at school I refused to give any attention to sin
> or cos and now it is the part of math I use the most)
>
> Remco

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