1vga_drawline(3)               Svgalib User Manual              vga_drawline(3)
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NAME

6       vga_drawline - draw a line on the screen
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SYNOPSIS

9       #include <vga.h>
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11       int vga_drawline(int x1, int y1, int x2, int y2);
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DESCRIPTION

15       draws  a  line from (x1, y1) to (x2, y2) on the screen. If you exchange
16       start and end of the line you should not expect the  exactly  identical
17       set of pixel be covered by the line.
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19       This  function  is  very  inefficient  as  is does a bunch of vga_draw‐
20       pixel(3) calls, you should consider  using  gl_line(3)  which  is  very
21       efficient,   or   doing   direct   screen   access   instead   or   use
22       vga_drawscansegment(3) to handle more than one pixel.
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24       The color drawn is set with vga_setcolor(3) or vga_setrgbcolor(3) resp.
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26       The function always returns 0 (on which you should probably not  really
27       rely).
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SEE ALSO

30       svgalib(7),   vgagl(7),   libvga.config(5),   gl_line(3)  vga_clear(3),
31       vga_setcolor(3), vga_setrgbcolor(3), vga_getpixel(3),  vga_drawline(3),
32       vga_drawscanline(3), vga_drawscansegment(3), vga_getscansegment(3)
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AUTHOR

35       This  manual  page  was  edited by Michael Weller <eowmob@exp-math.uni-
36       essen.de>. The exact source of the referenced function as  well  as  of
37       the  original  documentation is unknown.  This Page was modified by Don
38       Secrest <secrest@uiuc.edu>
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40       It is very likely that both are at least to some extent are due to Harm
41       Hanemaayer <H.Hanemaayer@inter.nl.net>.
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43       Occasionally  this  might be wrong. I hereby asked to be excused by the
44       original author and will happily accept any additions or corrections to
45       this first version of the svgalib manual.
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49Svgalib (>= 1.2.11)             21 August 1999                 vga_drawline(3)