GRASS GIS 8 Programmer's Manual
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draw_point.c
Go to the documentation of this file.
1
#include <math.h>
2
#include "
pngdriver.h
"
3
4
void
PNG_draw_point
(
double
fx,
double
fy)
5
{
6
int
x
= (int)floor(fx + 0.5);
7
int
y = (int)floor(fy + 0.5);
8
9
if
(x < png.clip_left || x >=
png
.
clip_rite
|| y <
png
.
clip_top
||
10
y >=
png
.
clip_bot
)
11
return
;
12
13
png
.
grid
[y *
png
.
width
+
x
] =
png
.
current_color
;
14
15
png
.
modified
= 1;
16
}
PNG_draw_point
void PNG_draw_point(double fx, double fy)
Definition:
draw_point.c:4
png
struct png_state png
Definition:
pngdriver/graph_set.c:32
pngdriver.h
GRASS png display driver - header file.
png_state::clip_bot
double clip_bot
Definition:
pngdriver.h:41
png_state::clip_top
double clip_top
Definition:
pngdriver.h:41
png_state::current_color
int current_color
Definition:
pngdriver.h:33
png_state::grid
unsigned int * grid
Definition:
pngdriver.h:43
png_state::width
int width
Definition:
pngdriver.h:42
png_state::clip_rite
double clip_rite
Definition:
pngdriver.h:41
png_state::modified
int modified
Definition:
pngdriver.h:46
x
#define x
lib
pngdriver
draw_point.c
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