Name
fontextr - Font Extraction Utility
Synopsis
fontextr fontname libraryfile
Description
The
fontextr utility program analyzes BAE internal vector font data and generates an editable ASCII font description file.
fontextr accepts the font name
fontname as first argument. This is the name of the font to be extracted from the font file.
fontextr writes the ASCII font data to a file named
<fontname>.fon.
fontextr accepts the font library file name
libraryfile as second argument. This file must have an extension of
.fnt but this extension must not be included with the command line. The font library file is the file from which the user wants to extract font data.
The
Bartels AutoEngineer standard font library file is named
ged.fnt. This file is stored to the BAE programs directory and contains the font(s) used by the
AutoEngineer.
To find out which fonts are stored in a font library file apply the
fontextr call with a
<fontname> that does not exist in the font file and
fontextr lists the fonts in the file.
Output File Format
The font description file starts with the
FONT command (defining the name of the font) and ends with the keyword
END.. Commentary text can be placed between
/* and
*/. The font description file is structured according to
FONT <fontname>;
CHAR <ord>; /* 'ASCII character' */
POLY (0, 0), (10, 10), (10, 0) ;
:
:
END.
where
<fontname> is the name of the font and
<ord> is the ordinal ASCII number of the character (e.g., character
A would be number 65). The valid value range for <ord> is 0..255. Each character
(CHAR) is defined by a list of polygon lines
(POLY). Each polygon definition consists of a list of polygon corner point coordinates. The coordinates are specified in positive integer units in a 32x48 point grid area. The [0,0] coordinate refers to the left bottom corner of the grid area. Hence, the valid value range for X coordinates is 0..31, and the valid value range for Y coordinates is 0..47. Each character definition has a maximum of up to 32 corner points. At the end of each character definition header line a comment is printed for showing the ASCII representation of the character.
Examples
To extract the data of font
standard from the font library file
ged.fnt (font data output is directed to ASCII file
standard.fon):
> fontextr standard ged 
Files
ged.fnt -- BAE font library file (in BAE programs directory)
See also
fontconv
Diagnosis
The error messages issued by
fontextr are intended to be self-explanatory.
