gcpGetLuminance(3)
NAME
gcpGetLuminance - Manipulate Luminance
SYNOPSIS
#include <ggi/gcp.h> ggi_float gcpGetLuminance(ggi_visual_t vis, const gcp_pixel pix);
DESCRIPTION
gcpGetLuminance calculates the luminance of the pix pixel.
RETURN VALUE
- gcpGetLuminance returns the luminance of the pixel.