pngdriver/erase.c

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/*!
   \file lib/pngdriver/erase.c
 
   \brief GRASS png display driver - erase screen
 
   (C) 2003-2014 by Per Henrik Johansen and the GRASS Development Team
 
   This program is free software under the GNU General Public License
   (>=v2). Read the file COPYING that comes with GRASS for details.
 
   \author Per Henrik Johansen (original contributor)
   \author Glynn Clements
 */
 
#include "pngdriver.h"
 
/*!
   \brief Erase screen
 */
void PNG_Erase(void)
{
    int n = png.width * png.height;
    int i;
 
    for (i = 0; i < n; i++)
        png.grid[i] = png.background;
 
    png.modified = 1;
}