Hi Lounento,

If you want to code this stuff directly, then you should study the manual.
However, Chris Colefax has already written a macro ( ClockMod ) that does all
of this for you and I have written a tutorial on using the macro.

If you want to discuss the ClockMod macro further, post a message in the
animation group and we'll get you going bouncing balls that lose energy,
accelerations, decellerations, cyclics, all of it.

steve


Lounento wrote:

> Hi,
> I've done some expirement animations with Povray, but have been missing a
> couple of useful features. In order to make objects to move smoothly, the
> object has to have a mathematical function that define the object's path.
> Sine/cosine and exponent functions would be of great help there. Although
> you can type "clock*clock" to make it a parabel, an exponent feature would
> be much easier to use and it would also make possible to take the square
> root (x^.5).
> One other improvement would be an animation script through which you could
> set individual enviroment for every frame of the animation.
> For example: ball bouncing on th floor. The ball loses energy every time it
> bounces from the floor (of course also in the air, but that's minimal) and
> the maximal altitude lowers. A function which describes this is
> y=<max.altitude>*sin x, where <max. altitude> is an individual value for
> every bounce. It's value should be calculated for every bounce, not for
> every frame.
>
> This ball is one example, which would gain advantidge of all of those
> features I'm missing:
> 1) sine function
> 2) ability to use exponent in scene language
> 3) a separate script file, which would control animation (for example:
> calculate multipliers)
>
> If someone has different solutions I'd gladly like to know about them.
>
> Htl

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