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getr8(3alleg4) Allegro manual getr8(3alleg4)

NAME

getr8, getg8, getb8, getr15, getg15, getb15, getr16, getg16, getb16, getr24, getg24, getb24, getr32, getg32, getb32 - Extract a color component from the specified pixel format. Allegro game programming library.

SYNOPSIS

#include <allegro.h>

int getr8(int c);

int getg8(int c);

int getb8(int c);

int getr15(int c);

int getg15(int c);

int getb15(int c);

int getr16(int c);

int getg16(int c);

int getb16(int c);

int getr24(int c);

int getg24(int c);

int getb24(int c);

int getr32(int c);

int getg32(int c);

int getb32(int c);

DESCRIPTION

Given a color in a display dependent format, these functions extract one of the red, green, or blue components (ranging 0-255). Example: 

   int r, g, b, color_value;
   
   color_value = _getpixel15(screen, 100, 100);
   r = getr15(color_value);
   g = getg15(color_value);
   b = getb15(color_value);

SEE ALSO

geta32(3alleg4), getr(3alleg4), getr_depth(3alleg4), makecol(3alleg4), set_color_depth(3alleg4)
version 4.4.2 Allegro