gl_line(3) Svgalib User Manual gl_line(3)NAMEgl_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 informa‐
tion about the mode available to gl_line.
The pixels are placed directly into video memory using inline coded
commands.
SEE ALSOsvgalib(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)
