Christian Froeschlin <chr### [at] chrfrde> wrote:
> W0RLDBUILDER wrote:
>
> > I'm trying to animate turbulence going from 1 to 0 and back to 1 over the course
> > of an animation, with clock going from 0 to 1. The reason I need this is because
> > I'm animating a rotating planet with POV (textured with one of the maps from
> > TextureGen) and I'd like to have moving clouds. The code for the animated
> > turbulence shouldn't be too long; I'm going to use it three times, each for
> > separate cloud layers. I'd also like to make three cloud layers identical to the
> > first three but with turbulence going from 0 to 1 to 0.
>
> Was this indended as a question? If yes, what is the problem?
>
> If you really want turbulence from 0 to 1 to 0 all you have to
> do is add "turbulence 1-abs(2*clock-1)". However, that will
> probably not look very convincing. You could scale it to move
> over a smaller interval.
>
> You can also try to rotate your cloud spheres at different speeds,
> and possibly split them into bands the rotate at different speeds
> to emulate the wind patterns caused by convection cells, see, e.g.
>
>
http://www.mhhe.com/biosci/genbio/tlw3/eBridge/Chp29/animations/ch29/global_wind_circulation.swf

Thanks. That code will work for what I want. Now how do I also get it going the
other way? I have 1-0-1, now I also need 0-1-0.

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