Jaap Frank wrote:
> 
> [...]
> 
> My question is:
>   Is there a way to circumvent this problem

No, arrays are a parse time language element in POV-Ray and can not be
used in (render time) user defined functions.  This is a very common
misunderstanding about user defined functions.  Although they look similar
in syntax to the normal script they are completely different.  An 'sqrt()'
in a function for example has nothing to do with an 'sqrt()' elsewhere in
SDL.

Christoph

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