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Subject: 
Re: Building a Postscript printer?
Newsgroups: 
lugnet.robotics
Date: 
Sat, 24 Jun 2000 19:27:42 GMT
Original-From: 
Andy Gombos <gombos@ne.infi.netSTOPSPAM>
Viewed: 
634 times
  
There is an online version of the manual(at least part of it--the important
parts) available at Wotsit www.wotsit.org. Go to printer formats. There is
several formats listed, including PCL and HP-GL/2.

Andy

Manoj Plakal wrote:

Yup, that was pretty much what I was planning to do. Hack Ghostscript
into something to generate a sequence of vector commands to drive
the RCX.

I was searching for information on a Postscript->HPGL/PCL converter myself
since that is basically what I am doing here. Only problem is that the RCX
is going to be a relatively primitive renderer in terms of resolution etc,
compared
to the average HPGL-speaking plotter.

Also, it looks like stepper motors are going to be required (I think). I
will search the newsgroup for more info, but is it a problem to control
stepper motors with
the RCX?

If possible, could I get hold of the source code for the converter you wrote?
Also, is there  a good reference for HPGL apart from the HP-provided printer
manual which I may not be able to lay hands on?

Thanks,
Manoj

In lugnet.robotics, "Chris Osborn" <fozztexx@fozztexx.com> writes:
On Jun. 23 00, 11:35 PDT, "Manoj Plakal" <plakal@no-spam.cs.wisc.edu>
wrote:
You're going to want to use GhostScript for your PostScript
interpreter. It already does a good job of interpreting PostScript,
so you don't have to write one from the ground up. Then all you
have to do is put definitions into the main dictionary that redefine
the basic set of functions to instead output the vectors that should
be plotted to a file or stdout.

=46rom there your PC can just chew through the list of vectors and
tell the RCX what to do.

This is essentially the method I used to turn my HPGL plotter into
a PostScript plotter.



Message has 1 Reply:
  Re: Building a Postscript printer?
 
Thanks! I grabbed the HPGL info from wotsit.org. Looking around for Postscript->HPGL converters, I found the following: <ul> <li> <a href="(URL)Pstoedit</a>: converts Postscript and PDF into lots of other vector formats (including HPGL). Source (...) (24 years ago, 24-Jun-00, to lugnet.robotics)

Message is in Reply To:
  Re: Building a Postscript printer?
 
Yup, that was pretty much what I was planning to do. Hack Ghostscript into something to generate a sequence of vector commands to drive the RCX. I was searching for information on a Postscript->HPGL/PCL converter myself since that is basically what (...) (24 years ago, 24-Jun-00, to lugnet.robotics)

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