GRASS GIS 8 Programmer's Manual 8.4.1(2025)-45ca3179ab
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pngdriver/set_window.c
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1/*!
2 \file lib/pngdriver/set_window.c
3
4 \brief GRASS png display driver - set window
5
6 (C) 2007-2014 by Glynn Clements and the GRASS Development Team
7
8 This program is free software under the GNU General Public License
9 (>=v2). Read the file COPYING that comes with GRASS for details.
10
11 \author Per Henrik Johansen (original contributor)
12 \author Glynn Clements
13 */
14
15#include <math.h>
16#include "pngdriver.h"
17
18/*!
19 \brief Set window
20
21 \param t,b,l,r top, bottom, left, right
22 */
23void PNG_Set_window(double t, double b, double l, double r)
24{
25 png.clip_top = t > 0 ? t : 0;
26 png.clip_bot = b < png.height ? b : png.height;
27 png.clip_left = l > 0 ? l : 0;
28 png.clip_rite = r < png.width ? r : png.width;
29}
double b
double l
double t
double r
struct png_state png
void PNG_Set_window(double t, double b, double l, double r)
Set window.
GRASS png display driver - header file.