Thanks for the answer.

Why I can not write this:
======================================
rotate <xvibrate, 0, 0>?
======================================
It gives me an error.

Thanks again,
Oleguer




news:web.41a509ecfa0d3b25fce34a90@news.povray.org...
> The primary way to vibrate an object is to translate or rotate using sin
and
> cos. depending on your model you could even damp the function over time.
>
> #include "transforms.inc"
>
> #declare damping = 5;
> // no.s greater than 0 damp the vibration
> // no.s less than zero excite the vibration
>
> #declare frequency = 5;
> #declare framerate = 25;
> #declare frames = 100
>
> #declare xvibrate =
>
distance*cosd(clock*360*(frames/framerate)*frequency)*pow(2.817,-clock*(fram
es/framerate)*damping);
>
>
>
>

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