1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
#include "../libdimension/dimension.h"
#include "../libdimension-png/dimension-png.h"
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
int main() {
dmnsn_canvas *canvas;
FILE *ofile, *ifile;
unsigned int x, y;
canvas = dmnsn_new_canvas(333, 300);
if (!canvas) {
fprintf(stderr, "--- Allocation of canvas failed! ---\n");
return EXIT_FAILURE;
}
ofile = fopen("dimension.png", "wb");
if (!ofile) {
fprintf(stderr, "--- Opening 'dimension.png' for writing failed! ---\n");
return EXIT_FAILURE;
}
for (x = 0; x < canvas->x; ++x) {
for (y = 0; y < canvas->y; ++y) {
if (x < canvas->x/3) {
canvas->pixels[y*canvas->x + x].r = UINT16_MAX;
canvas->pixels[y*canvas->x + x].g = 0;
canvas->pixels[y*canvas->x + x].b = 0;
} else if (x < 2*canvas->x/3) {
canvas->pixels[y*canvas->x + x].r = 0;
canvas->pixels[y*canvas->x + x].g = UINT16_MAX;
canvas->pixels[y*canvas->x + x].b = 0;
} else {
canvas->pixels[y*canvas->x + x].r = 0;
canvas->pixels[y*canvas->x + x].g = 0;
canvas->pixels[y*canvas->x + x].b = UINT16_MAX;
}
if (y < canvas->y/3) {
canvas->pixels[y*canvas->x + x].a = 0;
canvas->pixels[y*canvas->x + x].t = 0;
} else if (y < 2*canvas->y/3) {
canvas->pixels[y*canvas->x + x].a = UINT16_MAX/4;
canvas->pixels[y*canvas->x + x].t = 0;
} else {
canvas->pixels[y*canvas->x + x].a = UINT16_MAX/4;
canvas->pixels[y*canvas->x + x].t = UINT16_MAX/2;
}
}
}
if (dmnsn_png_write_canvas(canvas, ofile)) {
fprintf(stderr, "--- Writing canvas failed! ---\n");
return EXIT_FAILURE;
}
dmnsn_delete_canvas(canvas);
fclose(ofile);
ifile = fopen("dimension.png", "rb");
if (!ifile) {
fprintf(stderr, "--- Opening 'dimension.png' for reading failed! ---\n");
return EXIT_FAILURE;
}
if (dmnsn_png_read_canvas(&canvas, ifile)) {
fprintf(stderr, "--- Reading canvas failed! ---\n");
return EXIT_FAILURE;
}
fclose(ifile);
ofile = fopen("dimension.png", "wb");
if (!ofile) {
fprintf(stderr, "--- Opening 'dimension.png' for writing failed! ---\n");
return EXIT_FAILURE;
}
if (dmnsn_png_write_canvas(canvas, ofile)) {
fprintf(stderr, "--- Writing canvas failed! ---\n");
return EXIT_FAILURE;
}
dmnsn_delete_canvas(canvas);
return EXIT_SUCCESS;
}
|
