Leo80s wrote:

> I've writed:
> 
>         #declare f = function(X,Y,Z) { rbf(X,Y,Z) }
> 
> I' hoped that using a command like this:
> 
> isosurface {
>         function { rbf(x,y,z) }
>         ...
> }
> 
> my problem would be solved... but not: I receive a parse error in which
> povray say that x,y,z seem (in the body of calcola_w) to be 3 vectors...
> 

x,y and z are *RESERVED* keyword!
It seems you did not even take the time to read fully the
documentation... Start again.


> So I've downloaded the source code to understand how is constructed the
> function provided by povray like f_torus, f_sphere, etc...
> 
Stay away from the source code!

Read in details the 2.3.3.3.8 part of the windows-help...
function are evaluated at render-time, but #while and other are
evaluated at parse time (once and for all). you cannot have a
polymorphing function with #if/#while in them, you need to do it by
the math!
#local in a function is a no-no!
Your macro rbf is not doing what you might think.

> It's very important for my graduate thesis...please answer me!!!!
> 


-- 
Eifersucht ist die Leidenschaft, die mit Eifer sucht, was Leiden
schafft.

Eco: -8.75 Soc: -6.72
http://www.politicalcompass.org/

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