home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!concert!gatech!rutgers!uwvax!astroatc!vidiot!brown
- From: brown@vidiot.UUCP (Vidiot)
- Newsgroups: comp.lang.postscript
- Subject: Re: Text formatters turn PostScript upside down -- why?
- Message-ID: <4438@vidiot.UUCP>
- Date: 17 Nov 92 05:52:19 GMT
- References: <1992Nov14.222532.8727@cs.brown.edu>
- Reply-To: brown@vidiot.UUCP (Vidiot)
- Organization: Vidiot's Hangout
- Lines: 26
-
- In article <1992Nov14.222532.8727@cs.brown.edu> jgm@cs.brown.edu (Jonathan Monsarrat) writes:
- <Why do text formatters/converters like dvips (for TeX) and grops (for Troff)
- <define everything upside down in PostScript?
- <
- <Just to be mean?
-
- Upside down? Nope. I believe it has to do with printing the page from top
- down, which is how the text is formatted. But, PostScript's origin is the
- lower-left corner. So, groff moves it to the top-left corner, so that the
- output can be top down.
-
- OK, so it looks like the document should print upside-down, but it really
- doesn't. I'm not positive (James Clark will have to say for sure), but I
- think that the fonts are re-encoded upside-down. I couldn't find anyplace
- else where it could be. But a little test I did with my stuff seems to prove
- out that theory.
-
- So, in the end, everything comes out right-side up.
-
- Is it mean to upside-down the upside-down? While it is a necessary evil,
- it definately keeps you on your PostScript toes.
- --
- harvard\ spool.cs.wisc.edu!astroatc!vidiot!brown
- Vidiot ucbvax!uwvax..........!astroatc!vidiot!brown
- rutgers/ INTERNET:vidiot!brown%astroatc.UUCP@spool.cs.wisc.edu
- brown@wi.extrel.com
-