Dear Steve,

 Thank you for your prompt help to my problem.
When I add the statements as you described, could I simply add those to the
end of the union block without removing the previous material statements--
more than 50 of them in the scene file --?

My newbie question is that:
Does the most recent material definition take effect ignoring those more
than fifty previous statements?

Thank you so much for your help.

Jong


"Steve" <ste### [at] zeroppsuklinuxnet> wrote in message
news:slr### [at] zero-ppslocaldomain...
> On Thu, 29 Nov 2001 12:45:30 +0900, Jong wrote:
> >Dear all,
> How about putting all of your cylinders inside a union and
> then giving the union one material, leav out any cylinders
> that you would like to be different.
>
> #declare CommonMaterial =
> material{
>          material directives in there......
>
>         }
>
>
> #declare Most_Of_The_Cylinders =
> union{
>       cylinder....   rotate... translate...
>       cylinder....   rotate... translate...
>
>       material{CommonMaterial}
>      }
>
> object{Most_Of_The_Cylinders rotate... translate... }
>
> Hope some of that helps.
>
> --
> Cheers
> Steve              email mailto:ste### [at] zeroppsuklinuxnet
>
> %HAV-A-NICEDAY Error not enough coffee  0 pps.
>
> web http://www.zeropps.uklinux.net/
>
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>
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