1 #include <stdio.h>
2
3 #define STB_HBWANG_MAX_X 500
4 #define STB_HBWANG_MAX_Y 500
5
6 #define STB_HERRINGBONE_WANG_TILE_IMPLEMENTATION
7 #include "stb_herringbone_wang_tile.h"
8
9 #define STB_IMAGE_IMPLEMENTATION
10 #include "stb_image.h"
11
12 #define STB_IMAGE_WRITE_IMPLEMENTATION
13 #include "stb_image_write.h"
14
main(int argc,char ** argv)15 int main(int argc, char **argv)
16 {
17 if (argc < 5) {
18 fprintf(stderr, "Usage: herringbone_map {inputfile} {output-width} {output-height} {outputfile}\n");
19 return 1;
20 } else {
21 char *filename = argv[1];
22 int out_w = atoi(argv[2]);
23 int out_h = atoi(argv[3]);
24 char *outfile = argv[4];
25
26 unsigned char *pixels, *out_pixels;
27 stbhw_tileset ts;
28 int w,h;
29
30 pixels = stbi_load(filename, &w, &h, 0, 3);
31 if (pixels == 0) {
32 fprintf(stderr, "Couldn't open input file '%s'\n", filename);
33 exit(1);
34 }
35
36 if (!stbhw_build_tileset_from_image(&ts, pixels, w*3, w, h)) {
37 fprintf(stderr, "Error: %s\n", stbhw_get_last_error());
38 return 1;
39 }
40
41 free(pixels);
42
43 #ifdef DEBUG_OUTPUT
44 {
45 int i,j,k;
46 // add blue borders to top-left edges of the tiles
47 int hstride = (ts.short_side_len*2)*3;
48 int vstride = (ts.short_side_len )*3;
49 for (i=0; i < ts.num_h_tiles; ++i) {
50 unsigned char *pix = ts.h_tiles[i]->pixels;
51 for (j=0; j < ts.short_side_len*2; ++j)
52 for (k=0; k < 3; ++k)
53 pix[j*3+k] = (pix[j*3+k]*0.5+100+k*75)/1.5;
54 for (j=1; j < ts.short_side_len; ++j)
55 for (k=0; k < 3; ++k)
56 pix[j*hstride+k] = (pix[j*hstride+k]*0.5+100+k*75)/1.5;
57 }
58 for (i=0; i < ts.num_v_tiles; ++i) {
59 unsigned char *pix = ts.v_tiles[i]->pixels;
60 for (j=0; j < ts.short_side_len; ++j)
61 for (k=0; k < 3; ++k)
62 pix[j*3+k] = (pix[j*3+k]*0.5+100+k*75)/1.5;
63 for (j=1; j < ts.short_side_len*2; ++j)
64 for (k=0; k < 3; ++k)
65 pix[j*vstride+k] = (pix[j*vstride+k]*0.5+100+k*75)/1.5;
66 }
67 }
68 #endif
69
70 out_pixels = malloc(out_w * out_h * 3);
71
72 if (!stbhw_generate_image(&ts, NULL, out_pixels, out_w*3, out_w, out_h)) {
73 fprintf(stderr, "Error: %s\n", stbhw_get_last_error());
74 return 1;
75 }
76
77 stbi_write_png(argv[4], out_w, out_h, 3, out_pixels, out_w*3);
78 free(out_pixels);
79
80 stbhw_free_tileset(&ts);
81 return 0;
82 }
83 }