Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!natinst!rpp386!woody
From: woody@rpp386.cactus.org (Woodrow Baker)
Newsgroups: comp.lang.postscript
Subject: Re: Bitmap of PostScript code..
Summary: goody
Message-ID: <17948@rpp386.cactus.org>
Date: 15 Feb 90 13:05:37 GMT
References: <4917@amelia.nas.nasa.gov> <1990Feb14.041704.14844@athena.mit.edu> <1990Feb15.065013.20929@Neon.Stanford.EDU>
Distribution: na
Organization: River Parishes Programming, Plano, TX
Lines: 42

In article <1990Feb15.065013.20929@Neon.Stanford.EDU>, philip@Kermit.Stanford.EDU (Philip Machanick) writes:
> In article <4917@amelia.nas.nasa.gov>, izen@amelia.nas.nasa.gov (Steven
> H. Izen) writes:
> > In article <2761@bacchus.dec.com> kent@wsl.dec.com (Christopher A.
> Kent) writes:
> > >How do you get a bitmap of a PostScript file? You can't. If you could,
> > >you could use the PostScript engine as a font foundry, and no one,
> > >especially not Adobe, is about to let people do that, since that's where
> > >they make their money.

Frankly, while I understand thier motivation, I think it is a great
disservice, to put it as mildly as I possible can.



> 
> OK, so how does LaserTalk get a bitmapped version of PostScript to
> display on a Mac screen? There must be some way of uploading the bitmap
> 

There is a piece of code that they licensed from Adobe, apparently.  It is
an eexec routine that is a ceexec routine embedded in it.  basicaly, it
flushes the bands back down the appletalk link.  I have not  experimented
much with it.  What I would do, if I had a MAC, is to hook 2 of them up,
run something that captures Appletalk traffic on one, and writes it to disk.
Then I would start Lasertalk, and dump some code,and ask for a bitmap back.
for display.  I would then analyze thebus traffic.  What I suspect is thatyou
will find a download for  a routine called

flushbands.  Study the invokation of it, and you can determine how to use it.
I have a standalone cexec copy of it, I just have never taken it apart to
see what the invocation is, or how it works.  I'd *LOVE* to have a copy
of the APPLETALK transactions captured by the above technique.  If someone
would do it, and make arrangements to transmit it to me, I'd appreciate it
a BUNCH!

Cheers
Woody


> Philip Machanick
> philip@pescadero.stanford.edu