Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.postscript > #3792

Re: calculating kerning pairs

Path csiph.com!weretis.net!feeder6.news.weretis.net!news.misty.com!border-2.nntp.ord.giganews.com!border2.nntp.dca1.giganews.com!nntp.giganews.com!buffer2.nntp.dca1.giganews.com!nntp.brightview.co.uk!news.brightview.co.uk.POSTED!not-for-mail
NNTP-Posting-Date Mon, 08 Aug 2022 02:00:45 -0500
From ken <ken@spamcop.net>
Newsgroups comp.lang.postscript
Subject Re: calculating kerning pairs
Date Mon, 8 Aug 2022 08:00:43 +0100
Message-ID <MPG.3d5ac4e2a2a331eb9898d2@usenet.plus.net> (permalink)
References <jl8d0lFdt3qU1@mid.individual.net>
Reply-To ken@spamcop.net
MIME-Version 1.0
Content-Type text/plain; charset="us-ascii"
Content-Transfer-Encoding 7bit
User-Agent MicroPlanet-Gravity/3.0.4
X-Antivirus Avast (VPS 220806-4, 6/8/2022), Outbound message
X-Antivirus-Status Clean
Lines 28
X-Usenet-Provider http://www.giganews.com
X-Trace sv3-q3MFFCwLttGRb7M4e9wSP1tiR+SGe/GPPY+ilRTky9GBVA7SJ98jJj0D+g9LU1tXv7bXzHrr7zeOC0y!l21pyWWNf8kHFFtuu7D0SIyMy8D+EpNTtSZuU0v6+esLmG97Oij4sdPN7J+naEu5KkXTeJ5qFwAN!K8ioV/ZeOY1KKg==
X-Abuse-and-DMCA-Info Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info Otherwise we will be unable to process your complaint properly
X-Postfilter 1.3.40
X-Original-Bytes 2135
Xref csiph.com comp.lang.postscript:3792

Show key headers only | View raw


In article <jl8d0lFdt3qU1@mid.individual.net>, taviso@gmail.com says...

> Hello, I naively assumed that when I did setfont (foo) show that the
> kerning pairs in the font tables would influence spacing.

PostScript type 1 fonts don't have kerning information in the font.

 
> I understand now that it does not. You're supposed to use kshow and
> apply the character spacing yourself.
> 
> Fair enough, but then how do I get the "base" kerning for a character
> pair from within postscript, or do you have to parse the afm files
> manually?

You have to parse the AFM files (or kern tables in a TrueType font) 
manually.

 
> I understand that I can specify any kerning I want and that's a good
> thing, but wouldn't you usually want that to be a multiplier applied to
> the font's "base" kerning pairs?

I can't pretend to know the reasoning behind the original design, but I 
would suggest that kerning is regarded as being like all other spacing 
control (widow/orphan/rivers etc) to be managed by the layout 
application.

Back to comp.lang.postscript | Previous | NextPrevious in thread | Find similar


Thread

calculating kerning pairs Tavis Ormandy <taviso@gmail.com> - 2022-08-06 23:49 +0000
  Re: calculating kerning pairs ken <ken@spamcop.net> - 2022-08-08 08:00 +0100

csiph-web