redhat man page for gl_line

gl_line(3)							Svgalib User Manual							gl_line(3)

NAME
       gl_line - draw a line

SYNOPSIS
       #include <vgagl.h>

       void gl_line(int x1, int y1, int x2, int y2, int c);

DESCRIPTION
       Draw a line from point (x1, y1) to (x2, y2) inclusively in color c.

       You should not assume that the same drawing trajectory is used when you exchange start and end points.

       To  use	this  program one first sets up a mode with a regular vga_setmode call and vga_setpage(0), with possibly a vga_setlinearaddressing
       call.  Then a call to gl_setcontextvga(mode) is made.  This makes the information about the mode available to gl_line.

       The pixels are placed directly into video memory using inline coded commands.

SEE ALSO
       svgalib(7), vgagl(7), svgalib.conf(5),  threedkit(7),  testgl(1),  plane(1),  wrapdemo(1),  gl_circle(3),  gl_clearscreen(3),  gl_hline(3),
       gl_setpixel(3), gl_setpixelrgb(3), gl_setcontextvga(3).

AUTHOR
       This  manual  page  was	edited by Michael Weller <eowmob@exp-math.uni-essen.de>. The exact source of the referenced demo as well as of the
       original documentation is unknown. This page was modified by Don Secrest <secrest@uiuc.edu>.

       It is very likely that both are at least to some extent are due to Harm Hanemaayer <H.Hanemaayer@inter.nl.net>.

       Occasionally this might be wrong. I hereby asked to be excused by the original author and will happily accept any additions or  corrections
       to this first version of the svgalib manual.

Svgalib (>;= 1.2.11)						    21 Aug 1999 							gl_line(3)