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#include <stdio.h>
#define STB_HBWANG_MAX_X 500
#define STB_HBWANG_MAX_Y 500
#define STB_HERRINGBONE_WANG_TILE_IMPLEMENTATION
#include "stb_herringbone_wang_tile.h"
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "stb_image_write.h"
int main(int argc, char **argv)
{
if (argc < 5) {
fprintf(stderr, "Usage: herringbone_map {inputfile} {output-width} {output-height} {outputfile}\n");
return 1;
} else {
char *filename = argv[1];
int out_w = atoi(argv[2]);
int out_h = atoi(argv[3]);
char *outfile = argv[4];
unsigned char *pixels, *out_pixels;
stbhw_tileset ts;
int w,h;
pixels = stbi_load(filename, &w, &h, 0, 3);
if (pixels == 0) {
fprintf(stderr, "Couldn't open input file '%s'\n", filename);
exit(1);
}
if (!stbhw_build_tileset_from_image(&ts, pixels, w*3, w, h)) {
fprintf(stderr, "Error: %s\n", stbhw_get_last_error());
return 1;
}
free(pixels);
#ifdef DEBUG_OUTPUT
{
int i,j,k;
// add blue borders to top-left edges of the tiles
int hstride = (ts.short_side_len*2)*3;
int vstride = (ts.short_side_len )*3;
for (i=0; i < ts.num_h_tiles; ++i) {
unsigned char *pix = ts.h_tiles[i]->pixels;
for (j=0; j < ts.short_side_len*2; ++j)
for (k=0; k < 3; ++k)
pix[j*3+k] = (pix[j*3+k]*0.5+100+k*75)/1.5;
for (j=1; j < ts.short_side_len; ++j)
for (k=0; k < 3; ++k)
pix[j*hstride+k] = (pix[j*hstride+k]*0.5+100+k*75)/1.5;
}
for (i=0; i < ts.num_v_tiles; ++i) {
unsigned char *pix = ts.v_tiles[i]->pixels;
for (j=0; j < ts.short_side_len; ++j)
for (k=0; k < 3; ++k)
pix[j*3+k] = (pix[j*3+k]*0.5+100+k*75)/1.5;
for (j=1; j < ts.short_side_len*2; ++j)
for (k=0; k < 3; ++k)
pix[j*vstride+k] = (pix[j*vstride+k]*0.5+100+k*75)/1.5;
}
}
#endif
out_pixels = malloc(out_w * out_h * 3);
if (!stbhw_generate_image(&ts, NULL, out_pixels, out_w*3, out_w, out_h)) {
fprintf(stderr, "Error: %s\n", stbhw_get_last_error());
return 1;
}
stbi_write_png(argv[4], out_w, out_h, 3, out_pixels, out_w*3);
free(out_pixels);
stbhw_free_tileset(&ts);
return 0;
}
}
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