Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!ucsd!swrinde!dpmizar!csoftec!conrad!sac
From: sac@conrad.UUCP (Steven A. Conrad)
Newsgroups: comp.text
Subject: Re: Shaded Boxes in PIC
Message-ID: <175@conrad.UUCP>
Date: 13 Nov 89 00:37:09 GMT
References: <546@dcdwest.UUCP> <127725@sun.Eng.Sun.COM>
Reply-To: sac@conrad.UUCP (Steven A. Conrad)
Distribution: usa
Organization: Louisiana State University Medical Center, Shreveport
Lines: 24

In article <127725@sun.Eng.Sun.COM> henry%angel@Sun.COM (Henry McGilton -- Software Products) writes:
>    > I would like to know how to shade a box or other closed form
>    > in pic.
>In principle this cannot be done.  pic  is a preprocessor
...
>In closing, I'm not at all sure it's possible to do what you want
>in a simple way (not requiring modifications to both  pic  and
>troff).  But if anyone else knows better I'd be happy to learn
>something new.

I use troff, although my postprocessor generates HP's
language instead of Postscript.  My postprocessor permits
passing of transparent control sequences, one of which is to
set the shading for subsequently drawn boxes;  I handle this
with simple macros embedded in my pic statements, and it
works beautifully.

Perhaps there is a postprocessor which handles this for
Postscript?
-- 
Steven A. Conrad,  Department of Medicine (Critical Care)
Louisiana State University Medical Center, Shreveport, LA
UUCP: sac@conrad.UUCP,   Internet: conrad@manta.pha.pa.us
"I think there is a world market for about five computers" TJ Watson Jr, 1943