GRASS GIS 8 Programmer's Manual
8.2.2dev(2023)-3d2c704037
draw_point.c
Go to the documentation of this file.
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#include <math.h>
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#include "
pngdriver.h
"
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void
PNG_draw_point
(
double
fx,
double
fy)
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{
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int
x
= (int) floor(fx + 0.5);
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int
y
= (int) floor(fy + 0.5);
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if
(x < png.clip_left || x >=
png
.
clip_rite
|| y < png.clip_top || y >=
png
.
clip_bot
)
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return
;
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png
.
grid
[y *
png
.
width
+
x
] =
png
.
current_color
;
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png
.
modified
= 1;
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}
png_state::width
int width
Definition:
pngdriver.h:43
png_state::current_color
int current_color
Definition:
pngdriver.h:34
pngdriver.h
GRASS png display driver - header file.
vertex::y
double y
Definition:
path.h:12
PNG_draw_point
void PNG_draw_point(double fx, double fy)
Definition:
draw_point.c:4
png_state::clip_rite
double clip_rite
Definition:
pngdriver.h:42
png_state::clip_bot
double clip_bot
Definition:
pngdriver.h:42
x
#define x
png
struct png_state png
Definition:
pngdriver/graph_set.c:32
png_state::modified
int modified
Definition:
pngdriver.h:47
png_state::grid
unsigned int * grid
Definition:
pngdriver.h:44
lib
pngdriver
draw_point.c
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