vwidth(1) [bsd man page]

VWIDTH(1)						      General Commands Manual							 VWIDTH(1)

NAME

       vwidth - make troff width table for a font

SYNOPSIS

       vwidth fontfile pointsize > ftxx.c
       cc -c ftxx.c mv ftxx.o /usr/share/font/ftxx

DESCRIPTION

       Vwidth  translates from the width information stored in the vfont style format to the format expected by troff.	Troff wants an object file
       in a.out(5) format.  (This fact does not seem to be documented anywhere.)  Troff should look directly in the font file but it doesn't.

       Vwidth should be used after editing a font with fed(1).	It is not necessary to use vwidth unless you have made a change that would  affect
       the width tables.  Such changes include numerically editing the width field, adding a new character, and moving or copying a character to a
       new position.  It is not always necessary to use vwidth if the physical width of the glyph (e.g. the number of columns in the  bit  matrix)
       has changed, but if it has changed much the logical width should probably be changed and vwidth run.

       Vwidth  produces  a  C  program	on its standard output.  This program should be run through the C compiler and the object (that is, the .o
       file) saved.  The resulting file should be placed in /usr/share/font in the file ftxx where is a one or two letter code that is the logical
       (internal  to  troff) font name.  This name can be found by looking in the file /usr/share/fontinfo/fname* where fname is the external name
       of the font.

SEE ALSO

       fed(1), vfont(5), troff(1), vtroff(1)

BUGS

       Produces the C file using obsolete syntax that the portable C compiler complains about.

4.2 Berkeley Distribution					 October 22, 1996							 VWIDTH(1)

VFONT(5)							File Formats Manual							  VFONT(5)

NAME

       vfont - font formats for the Benson-Varian or Versatec

SYNOPSIS

       /usr/share/vfont/*

DESCRIPTION

       The  fonts  for	the printer/plotters have the following format.  Each file contains a header, an array of 256 character description struc-
       tures, and then the bit maps for the characters themselves.  The header has the following format:

	    struct header {
		    short	    magic;
		    unsigned short  size;
		    short	    maxx;
		    short	    maxy;
		    short	    xtnd;
	    } header;

       The magic number is 0436 (octal).  The maxx, maxy, and xtnd fields are not used at the current time.  Maxx and maxy are intended to be  the
       maximum horizontal and vertical size of any glyph in the font, in raster lines.	The size is the size of the bit maps for the characters in
       bytes.  Before the maps for the characters is an array of 256 structures for each of the possible characters in the font.  Each element	of
       the array has the form:

	    struct dispatch {
		    unsigned short  addr;
		    short	    nbytes;
		    char	    up;
		    char	    down;
		    char	    left;
		    char	    right;
		    short	    width;
	    };

       The  nbytes  field  is  nonzero for characters which actually exist.  For such characters, the addr field is an offset into the rest of the
       file where the data for that character begins.  There are up+down rows of data for each character,  each  of  which  has  left+right  bits,
       rounded	up  to	a number of bytes.  The width field is not used by vcat, although it is to make width tables for troff.  It represents the
       logical width of the glyph, in raster lines, and shows where the base point of the next glyph would be.

FILES

       /usr/share/vfont/*

SEE ALSO

       troff(1), pti(1), vfontinfo(1)

7th Edition							 October 22, 1996							  VFONT(5)