Man Linux: Main Page and Category List


       gl_line - draw a line


       #include <vgagl.h>

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


       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


       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).


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

       It is very likely that both are at least to some extent are due to Harm
       Hanemaayer <>.

       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.