Re: Convert PCL Font Pitch to Postscript Font Height

Newsgroups	comp.lang.postscript
Subject	Re: Convert PCL Font Pitch to Postscript Font Height
References	<433c7a05-9c30-4549-bb06-4da369649e35@s41g2000prb.googlegroups.com>
Organization	Gizmos & Gadgets, Ltd.
From	bonomi@host122.r-bonomi.com (Robert Bonomi)
Message-ID	<_aadnWdLSaxi9WTQnZ2dnUVZ_uydnZ2d@posted.nuvoxcommunications> (permalink)
Date	2011-06-15 21:22 -0500

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In article <433c7a05-9c30-4549-bb06-4da369649e35@s41g2000prb.googlegroups.com>,
Ernschd  <svenhensel78@googlemail.com> wrote:
>Currently I'm writing a PCL to Postscript-Converter. Unfortunately
>I'm stuck on following Problem:
>in PCL there are commands for selecting Font Pitch and Font Height.
>Pitch is used for fixed-width Fonts, Height for proportional Fonts
>(Pitch = number of characters per inch, Height = Height in PCL Points
>(1/72 inch)).
>
>In Postscript I'm not able to choose the Font size when I'm receiving
>the PCL Font Pitch.

Sure you are. :)  

You just have to _work_ at it a bit harder.  

>May I calculate the Height, or is there a according command in
>Postscript?

There is no equivalent commandin PostScript.

The standard PCL fixed-with font pitches  (10, 12, 16.67) are indended for
6 LPI / 8 LPI vertical.   6 LPI is 12 pt _line_spacing, 8 LPI is 9 pt _line_ 
spacing.  One typically uses a font size that is somewhat less than the line
spacing -- e.g. '10 pt font on 12 pt spacing", or '8 on 9'..

See the PCL reference manual:
<http://h20000.www2.hp.com/bc/docs/support/SupportManual/bpl13210/bpl13210.pdf>
chapter 8 "PCL Font Selection", the "Pitch Command" (starting page 8-10) for
how to relate an arbitrary pitch to the font height. "Invert" the formula
at the top of page 8-11, to get a font height based on a 'ptch' figure.

If you don't have the 'contour' figure. '.6' (60%) is a reasonable number to
use.

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Convert PCL Font Pitch to Postscript Font Height Ernschd <svenhensel78@googlemail.com> - 2011-06-10 03:24 -0700
  Re: Convert PCL Font Pitch to Postscript Font Height Helge Blischke <h.blischke@acm.org> - 2011-06-10 13:18 +0200
  Re: Convert PCL Font Pitch to Postscript Font Height bonomi@host122.r-bonomi.com (Robert Bonomi) - 2011-06-15 21:22 -0500

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