Manipulate Luminance
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.