trusty (3) gl_getpixel.3.gz

NAME

       gl_getpixel - return the color of a pixel

SYNOPSIS

       #include <vgagl.h>

       int gl_getpixel(int x, int y);

DESCRIPTION

       Returns the color of pixel at position (x, y) in the format used in the screen memory.

       The color -1 is returned for points outside the clipping window.

SEE ALSO

       svgalib(7),   vgagl(7),   svgalib.conf(5),   threedkit(7),   testgl(1),  gl_getbox(3),  gl_getpalette(3),
       gl_getpalettecolor(3),  gl_getpalettecolors(3),  gl_getpixelrgb(3),   gl_rgbcolor(3),   gl_setpalette(3),
       gl_setpalettecolor(3), gl_setpalettecolors(3), gl_setpixel(3), gl_setpixelrgb(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.

       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.