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hat-test: allow choosing a random number seed.

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The default one is always the same, because the main purpose of this
tool is debugging. But one person has already wanted to use it for
actually generating a tiling patch for another use, so let's make it
easier to vary the randomness!
This commit is contained in:
Simon Tatham
2023-03-30 08:45:06 +01:00
parent 73dab39bf5
commit e6aa7ab6dd
1 changed files with 9 additions and 3 deletions
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12
hat.c
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@ -1423,7 +1423,8 @@ int main(int argc, char **argv)
KiteEnum s[1];
HatCoordContext ctx[1];
HatCoords *coords[KE_NKEEP];
random_state *rs = random_new("12345", 5);
random_state *rs;
const char *random_seed = "12345";
int w = 10, h = 10;
int argpos = 0;
size_t i;
@ -1434,13 +1435,17 @@ int main(int argc, char **argv)
while (--argc > 0) {
const char *arg = *++argv;
if (!strcmp(arg, "--help")) {
printf("usage: hat-test [<width>] [<height>]\n"
" or: hat-test --test\n");
printf(" usage: hat-test [options] [<width>] [<height>]\n"
"options: --python write a Python function call per hat\n"
" --seed=STR vary the starting random seed\n"
" also: hat-test --test\n");
return 0;
} else if (!strcmp(arg, "--test")) {
return unit_tests() ? 0 : 1;
} else if (!strcmp(arg, "--python")) {
dctx->outfmt = OF_PYTHON;
} else if (!strncmp(arg, "--seed=", 7)) {
random_seed = arg+7;
} else if (arg[0] == '-') {
fprintf(stderr, "unrecognised option '%s'\n", arg);
return 1;
@ -1462,6 +1467,7 @@ int main(int argc, char **argv)
for (i = 0; i < lenof(coords); i++)
coords[i] = NULL;
rs = random_new(random_seed, strlen(random_seed));
init_coords_random(ctx, rs);
bbox->started = false;