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