GRASS GIS 8 Programmer's Manual
8.5.0dev(2024)-498676c526
pngdriver/set_window.c
Go to the documentation of this file.
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/*!
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\file lib/pngdriver/set_window.c
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\brief GRASS png display driver - set window
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(C) 2007-2014 by Glynn Clements and the GRASS Development Team
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This program is free software under the GNU General Public License
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(>=v2). Read the file COPYING that comes with GRASS for details.
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\author Per Henrik Johansen (original contributor)
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\author Glynn Clements
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*/
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#include <math.h>
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#include "
pngdriver.h
"
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/*!
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\brief Set window
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\param t,b,l,r top, bottom, left, right
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*/
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void
PNG_Set_window
(
double
t
,
double
b
,
double
l
,
double
r
)
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{
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png
.
clip_top
=
t
> 0 ?
t
: 0;
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png
.
clip_bot
=
b
<
png
.
height
?
b
:
png
.
height
;
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png
.
clip_left
=
l
> 0 ?
l
: 0;
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png
.
clip_rite
=
r
<
png
.
width
?
r
:
png
.
width
;
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}
png
struct png_state png
Definition:
pngdriver/graph_set.c:32
PNG_Set_window
void PNG_Set_window(double t, double b, double l, double r)
Set window.
Definition:
pngdriver/set_window.c:23
pngdriver.h
GRASS png display driver - header file.
b
double b
Definition:
r_raster.c:39
l
double l
Definition:
r_raster.c:39
t
double t
Definition:
r_raster.c:39
r
double r
Definition:
r_raster.c:39
png_state::clip_left
double clip_left
Definition:
pngdriver.h:41
png_state::clip_bot
double clip_bot
Definition:
pngdriver.h:41
png_state::clip_top
double clip_top
Definition:
pngdriver.h:41
png_state::height
int height
Definition:
pngdriver.h:42
png_state::width
int width
Definition:
pngdriver.h:42
png_state::clip_rite
double clip_rite
Definition:
pngdriver.h:41
lib
pngdriver
set_window.c
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