🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: comp.lang.postscript
Article #5775

Re: Postscript Font Scaling & Reduction

#5775
From: Mark Kantrowitz
Date: Sun, 22 Nov 1992 06:02
15 lines
1522 bytes
In article <1992Nov19.174800.23493@adobe.com> delahunt@adobe.com (Jim DeLaHunt) writes:
>The hints make adjustments based on the number of device pixel spanned by 
>the scaled outline, not based on the point size per se.  Hinting will have
>the same effect on a 10-point font on a 300 dpi device as on a 5-point font 
>on a 600 dpi device.

More precisely, hints make adjustments based on the number of lines to
the em square. A 12 point font on a 300 dpi device will have
	12 points x 1 inch / 72 points x 300 dpi = 50 lines
(Strictly speaking, that 72 should be 72.289, but lets not nitpick.)

Most intelligent scan conversion algorithms do not work well below
about 24 lines (though I've seen Bitstream's fontware work well on
Helvetica at 6 lines). That's why most systems that generate screen
fonts use canned bitmaps below 18 point. 
Technical Details
Message-ID: <By3ssn.CBJ.1@cs.cmu.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!uwm.edu!ogicse!das-news.harvard.edu!cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!mkant
References: <1992Nov18.181137.25836@adobe.com> <4007@ecicrl.ocunix.on.ca> <1992Nov19.174800.23493@adobe.com>

Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!uwm.edu!ogicse!das-news.harvard.edu!cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!mkant
From: mkant+@cs.cmu.edu (Mark Kantrowitz)
Newsgroups: comp.lang.postscript
Subject: Re: Postscript Font Scaling & Reduction
Message-ID: <By3ssn.CBJ.1@cs.cmu.edu>
Date: 22 Nov 92 06:02:39 GMT
Article-I.D.: cs.By3ssn.CBJ.1
References: <1992Nov18.181137.25836@adobe.com> <4007@ecicrl.ocunix.on.ca> <1992Nov19.174800.23493@adobe.com>
Sender: news@cs.cmu.edu (Usenet News System)
Distribution: na
Organization: School of Computer Science, Carnegie Mellon
Lines: 15
Nntp-Posting-Host: glinda.oz.cs.cmu.edu