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From: brad@bradley.bradley.edu (Bradley E. Smith)
Newsgroups: comp.text,comp.lang.postscript
Subject: Help me write some DESC files for postscript
Message-ID: <1991Jan9.175920.20119@bradley.bradley.edu>
Date: 9 Jan 91 17:59:20 GMT
Organization: Bradley University
Lines: 53

Hi, I am try to write DESC & font files for postscript fonts we have

according to the ADOBE FONT METRIC FILES specifiaction (version 3.0)
"All measurements in an AFM and ACFM file are given in terms of units
equal to 1/1000 of the scale factor(point size) of the font program.
To compute actual sizes in a document, these amounts should be
multiplied by (scale factor of font)/1000."

Also characters are defined like the following:

C 33; WX 333; N excalm ; B 100 -15 233 683;
C 208; WX 1000; N emdash ; B 0 174 1000 228;

And also from Troff we get (in the DESC file)

res - is the machine resolution in units per inch
hor & vert - the minimum number of machine units that it is possible
    to move
unitwidth - the point size at which the character widths map directly
    into machine units.

Now that we have that the DESC files that came with 'tpscript' (for the apple
laser write have the following 

res 720
hor 1
vert 1
unitwidth 10

and the 'R' file has the following as well (cut out a lot)

# Times-Roman
name R
internalname Roman
ligatures fi fl ff ffi ffl 0
spacewidth 25
charset
!	33	2	041
em	100	0	0320	emdash


-----------------
Now my question, do I just set unitwidth to 10 for all fonts?  Do I divide the
width from the Adode font printout by 10 and use it?  what about round off
is 339 the same 331 (ie 33, or should 339 be 34)?  Can I set unitwidth to 1
and just use 333?

Thanks

Brad Smith
Bradley University
brad@bradley.bradley.edu
309-677-2337