Re: MetaPost/background/gradient shading (ps/pdf shade)

[Hans Hagen <pragma@wxs.nl>]

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At 04:10 PM 1/13/2000 +0100, Tobias Burnus wrote:

>shading. Is it possible to access with MP and/or direct writting the PS-3 /
>PDF-1.3 shading operator? (I think I once saw an exaple, probably for
testing GS
>(due in a few weeks, current is 5.99-fix1).

You wouldn't ask if you wouldn't know if it was possible, would you?
Actually, this is already half a year old stuff. I attached the file, so
that you (and others) can test it; you need acrobat 4 or gs>5.50 or so.   

>Second problem: Since the names (should) cover the complete colour-pane,
arrows
>are currently drawn from the name to the percental position on the right
edge.
>How can this best achived?
>(I'll use a PERL-Script, which reads the name and %-value, so I can do quite
>some calculation in it.)

Take a look at the support module I'll send you. It's just a matter of
defining a few MPgraphics. It is not finished, since matthew baker will
first have to work out some decent arbitrary shading schemes (for which I
lack the math basics). These are only simple shades.  

>PS: I think if I've done this, I can ship a complete evaluation/ranking
script
>package for university departments (web interface, fill-out forms, etc) ;-)

Well. Wrap it into an article and taco will certainly publish it in the maps. 

Hans  

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