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gl_getpixel

gl_getpixel

Section: Svgalib User Manual (3) Updated: 2 Aug 1997
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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.


 

Index

NAME
SYNOPSIS
DESCRIPTION
SEE ALSO
AUTHOR

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Time: 21:46:58 GMT, April 16, 2011