[pdftex] PDF fonctions(type 4) in PS

[Hans Hagen]

At 07:57 AM 8/6/2001 -0700, Daniel Garcia wrote:
>Hi,
>
>I am learning PDF and PostScript. I would like to ask
>you if it is posible to use type 4 PDF
>fonctions(Postscript calculator) in Postscript for use
>with shading patterns. I have searched in the
>Postscript Reference of Adobe (Level 3) and I didn't
>find the way. The PostScript fonctions are sampled
>fonctions or exponentials interpolations, what I would
>like to use is a fonction like f(z)=sin(x)*sin(y) for
>example.


this is indeed possible, there a sme predefine patterns, and you can add 
your own using a limited set of operators; of course you need to build the 
right datastructures [i still want to provide a couple of them for metapost 
shading beyond standard shading]

Hans

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