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/* Copyright (C) 1997 Aladdin Enterprises. All rights reserved.
This software is licensed to a single customer by Artifex Software Inc.
under the terms of a specific OEM agreement.
*/
/*$RCSfile$ $Revision$ */
/* Graphics state alpha value access */
#include "gx.h"
#include "gsalpha.h"
#include "gxdcolor.h"
#include "gzstate.h"
/* setalpha */
int
gs_setalpha(gs_state * pgs, floatp alpha)
{
pgs->alpha =
(gx_color_value) (alpha < 0 ? 0 : alpha > 1 ? gx_max_color_value :
alpha * gx_max_color_value);
gx_unset_dev_color(pgs);
return 0;
}
/* currentalpha */
float
gs_currentalpha(const gs_state * pgs)
{
return (float)pgs->alpha / gx_max_color_value;
}
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