NAME

defrasterfont − defines a raster font

SPECIFICATION

C
defrasterfont(n, ht, nc, chars, nr, raster)
short n, ht, nc, nr;
Fontchar chars[];
short raster[];

FORTRAN
subroutine defras(n, ht, nc, chars, nr, raster)
integer*4 n, ht, nc, nr
integer*2 raster(nr), chars(4*nc)

Pascal
procedure defrasterfont(n, ht, nc: longint; var nr: Fontchar; chars: longint;
var raster: Short);

DESCRIPTION

defrasterfont defines a raster font.  n is an index into the font table; ht is an integer that specifies the maximum height of characters in the font in pixels. n becomes the font’s internal name.  nc gives the number of characters in the font and the number of elements in chars array. 

chars contains a description of each character in the font.  The description includes the height and width of the character in pixels, the offsets from the character origin to the lower left corner of the character’s bounding box, an offset into the array of rasters, and the amount to add to the current character position x after drawing the character. 

raster is an array of nr shorts of bitmap information.  It is a one-dimensional array of mask shorts, ordered left to right and bottom to top.  Mask bits are left-justified in the character’s bounding box. 

To replace a raster font, specify the index of the previous font as the index for the new font.  To delete a raster font, define a font with no characters.  The default font, 0, is a fixed-pitch font of height 16 and width 9.  Font 0 cannot be redefined. 

SEE ALSO

charstr, font IRIS Graphics Programming, Section 5.3, Fonts

NOTE

This routine is available only in immediate mode. 

Version 2.5  —  April 22, 1987