File: gcpGetLuminance.3

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.TH "gcpGetLuminance" 3 "2005-07-30" "libggigcp-1.0.x" GGI
.SH NAME
\fBgcpGetLuminance\fR : Manipulate Luminance
.SH SYNOPSIS
.nb
.nf
#include <ggi/gcp.h>

ggi_float gcpGetLuminance(ggi_visual_t vis, const gcp_pixel pix);
.fi

.SH DESCRIPTION
\fBgcpGetLuminance\fR calculates the luminance of the \fIpix\fR pixel.
.SH RETURN VALUE
\fBgcpGetLuminance\fR returns the luminance of the pixel.