Warp wrote:
> Jaime Vives Piqueres <jai### [at] ignoranciaorg> wrote:
>> // sloped texture with autoilluminated finish
>> #declare t_terrain_slope=
>> texture{
>>   pigment{
>>    slope y
> 
>   That shows the slope of the heightfield, not the *change* in slope,
> which is a bit more involved (it would require the derivative of the
> function which indicates the slope of the heightfield; since the slope
> function is the derivative of the heightfield function, the change in
> slope would thus be the double derivative of the heightfield function).
> 
>   Maybe the original poster really wanted to actually see the slope,
> rather than the change in slope, in which case your answer would be
> the correct one.
> 

Is there a function in POV that will allow me to automatically take the 
derivative of another function?

-Mike

Post a reply to this message