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- Path: sparky!uunet!utcsri!skule.ecf!torn!nott!cunews!revcan!ecicrl!clewis
- From: clewis@ferret.ocunix.on.ca (Chris Lewis)
- Newsgroups: comp.lang.postscript
- Subject: Re: Postscript Font Scaling & Reduction
- Message-ID: <4007@ecicrl.ocunix.on.ca>
- Date: 18 Nov 92 23:40:36 GMT
- References: <1992Nov18.045514.4005@oucsace.cs.ohiou.edu> <1992Nov18.181137.25836@adobe.com>
- Distribution: na
- Organization: Elegant Communications Inc., Ottawa, Canada
- Lines: 27
-
- In article <1992Nov18.181137.25836@adobe.com> delahunt@adobe.com (Jim DeLaHunt) writes:
- >In article <1992Nov18.045514.4005@oucsace.cs.ohiou.edu>
- >carlip@oucsace.cs.ohiou.edu (Walter C3arlip) writes:
-
- >>... As I understand it, a given style of type will
- >>have a different design depending upon the point size it is to be printed
- >>at, e.g., Times Roman at 12pt will have lines that are wider and darker
- >>relative to the hight of the letter than Times Roman at 20pt.
-
- >PostScript technology preserved this linear scaling. The glyph outline
- >is described in bezier curves, and the PostScript interpreter scales the
- >outline linearly to the desired size. Therefore, most PostScript typefaces
- >have a single design which is used for all sizes.
-
- I was under the impression that the "hints" allow the font machinery
- to do adjustments based on target point size. From my experiments, linear
- font scaling doesn't look that great.
-
- Psroff 3.0 has a HP Laserjet bitmap font scaling program. It's strictly
- linear. When you scale up, the stroke relative widths stay constant. But
- what started being a reasonable Roman font starts looking bold, and bold starts
- looking very fat. (this is with relatively large magnifications. Eg:
- 10pt -> 36pt) Quite useable within my range of sizes, but still noticable.
- --
- Chris Lewis; clewis@ferret.ocunix.on.ca; Phone: Canada 613 832-0541
- Psroff 3.0 info: psroff-request@ferret.ocunix.on.ca
- Ferret list: ferret-request@ferret.ocunix.on.ca
-