| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: mkillum.c,v 2.14 2003/06/26 00:58:09 schorsch Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* Make illum sources for optimizing rendering process |
| 6 |
*/ |
| 7 |
|
| 8 |
#include <signal.h> |
| 9 |
#include <ctype.h> |
| 10 |
|
| 11 |
#include "mkillum.h" |
| 12 |
#include "platform.h" |
| 13 |
|
| 14 |
/* default parameters */ |
| 15 |
#define SAMPDENS 48 /* points per projected steradian */ |
| 16 |
#define NSAMPS 32 /* samples per point */ |
| 17 |
#define DFLMAT "illum_mat" /* material name */ |
| 18 |
#define DFLDAT "illum" /* data file name */ |
| 19 |
/* selection options */ |
| 20 |
#define S_NONE 0 /* select none */ |
| 21 |
#define S_ELEM 1 /* select specified element */ |
| 22 |
#define S_COMPL 2 /* select all but element */ |
| 23 |
#define S_ALL 3 /* select all */ |
| 24 |
|
| 25 |
/* rtrace command and defaults */ |
| 26 |
char *rtargv[64] = { "rtrace", "-dj", ".25", "-dr", "3", "-dv-", |
| 27 |
"-ab", "2", "-ad", "256", "-as", "128", "-aa", ".15", }; |
| 28 |
int rtargc = 14; |
| 29 |
/* overriding rtrace options */ |
| 30 |
char *myrtopts[] = { "-I-", "-i-", "-ld-", "-ov", "-h-", |
| 31 |
"-fff", "-y", "0", NULL }; |
| 32 |
|
| 33 |
struct rtproc rt; /* our rtrace process */ |
| 34 |
|
| 35 |
struct illum_args thisillum = { /* our illum and default values */ |
| 36 |
0, |
| 37 |
DFLMAT, |
| 38 |
DFLDAT, |
| 39 |
0, |
| 40 |
VOIDID, |
| 41 |
SAMPDENS, |
| 42 |
NSAMPS, |
| 43 |
0., |
| 44 |
}; |
| 45 |
|
| 46 |
char matcheck[MAXSTR]; /* current material to include or exclude */ |
| 47 |
int matselect = S_ALL; /* selection criterion */ |
| 48 |
|
| 49 |
FUN ofun[NUMOTYPE] = INIT_OTYPE; /* object types */ |
| 50 |
|
| 51 |
int gargc; /* global argc */ |
| 52 |
char **gargv; /* global argv */ |
| 53 |
#define progname gargv[0] |
| 54 |
|
| 55 |
int doneheader = 0; /* printed header yet? */ |
| 56 |
#define checkhead() if (!doneheader++) printhead(gargc,gargv) |
| 57 |
|
| 58 |
int warnings = 1; /* print warnings? */ |
| 59 |
|
| 60 |
|
| 61 |
main(argc, argv) /* compute illum distributions using rtrace */ |
| 62 |
int argc; |
| 63 |
char *argv[]; |
| 64 |
{ |
| 65 |
char *rtpath; |
| 66 |
FILE *fp; |
| 67 |
register int i; |
| 68 |
/* set global arguments */ |
| 69 |
gargv = argv; |
| 70 |
/* set up rtrace command */ |
| 71 |
for (i = 1; i < argc; i++) { |
| 72 |
if (argv[i][0] == '<' && argv[i][1] == '\0') |
| 73 |
break; |
| 74 |
rtargv[rtargc++] = argv[i]; |
| 75 |
if (argv[i][0] == '-' && argv[i][1] == 'w') |
| 76 |
switch (argv[i][2]) { |
| 77 |
case '\0': |
| 78 |
warnings = !warnings; |
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break; |
| 80 |
case '+': |
| 81 |
case 'T': case 't': |
| 82 |
case 'Y': case 'y': |
| 83 |
case '1': |
| 84 |
warnings = 1; |
| 85 |
break; |
| 86 |
case '-': |
| 87 |
case 'F': case 'f': |
| 88 |
case 'N': case 'n': |
| 89 |
case '0': |
| 90 |
warnings = 0; |
| 91 |
break; |
| 92 |
} |
| 93 |
} |
| 94 |
gargc = i; |
| 95 |
rtargc--; |
| 96 |
for (i = 0; myrtopts[i] != NULL; i++) |
| 97 |
rtargv[rtargc++] = myrtopts[i]; |
| 98 |
rtargv[rtargc++] = argv[gargc-1]; |
| 99 |
rtargv[rtargc] = NULL; |
| 100 |
/* just asking for defaults? */ |
| 101 |
if (!strcmp(argv[gargc-1], "-defaults")) { |
| 102 |
printopts(); fflush(stdout); |
| 103 |
rtpath = getpath(rtargv[0], getenv("PATH"), X_OK); |
| 104 |
if (rtpath == NULL) { |
| 105 |
eputs(rtargv[0]); |
| 106 |
eputs(": command not found\n"); |
| 107 |
exit(1); |
| 108 |
} |
| 109 |
execv(rtpath, rtargv); |
| 110 |
perror(rtpath); |
| 111 |
exit(1); |
| 112 |
} |
| 113 |
if (gargc < 2 || argv[gargc-1][0] == '-') |
| 114 |
error(USER, "missing octree argument"); |
| 115 |
/* else initialize and run our calculation */ |
| 116 |
init(); |
| 117 |
if (gargc+1 < argc) |
| 118 |
for (i = gargc+1; i < argc; i++) { |
| 119 |
if ((fp = fopen(argv[i], "r")) == NULL) { |
| 120 |
sprintf(errmsg, |
| 121 |
"cannot open scene file \"%s\"", argv[i]); |
| 122 |
error(SYSTEM, errmsg); |
| 123 |
} |
| 124 |
filter(fp, argv[i]); |
| 125 |
fclose(fp); |
| 126 |
} |
| 127 |
else |
| 128 |
filter(stdin, "standard input"); |
| 129 |
quit(0); |
| 130 |
} |
| 131 |
|
| 132 |
|
| 133 |
void |
| 134 |
quit(status) /* exit with status */ |
| 135 |
int status; |
| 136 |
{ |
| 137 |
int rtstat; |
| 138 |
|
| 139 |
rtstat = close_process(&(rt.pd)); |
| 140 |
if (status == 0) |
| 141 |
if (rtstat < 0) |
| 142 |
error(WARNING, |
| 143 |
"unknown return status from rtrace process"); |
| 144 |
else |
| 145 |
status = rtstat; |
| 146 |
exit(status); |
| 147 |
} |
| 148 |
|
| 149 |
|
| 150 |
init() /* start rtrace and set up buffers */ |
| 151 |
{ |
| 152 |
extern int o_face(), o_sphere(), o_ring(); |
| 153 |
int maxbytes; |
| 154 |
/* set up object functions */ |
| 155 |
ofun[OBJ_FACE].funp = o_face; |
| 156 |
ofun[OBJ_SPHERE].funp = o_sphere; |
| 157 |
ofun[OBJ_RING].funp = o_ring; |
| 158 |
/* set up signal handling */ |
| 159 |
#ifdef SIGPIPE /* not present on Windows */ |
| 160 |
signal(SIGPIPE, quit); |
| 161 |
#endif |
| 162 |
/* start rtrace process */ |
| 163 |
errno = 0; |
| 164 |
maxbytes = open_process(&(rt.pd), rtargv); |
| 165 |
if (maxbytes == 0) { |
| 166 |
eputs(rtargv[0]); |
| 167 |
eputs(": command not found\n"); |
| 168 |
exit(1); |
| 169 |
} |
| 170 |
if (maxbytes < 0) |
| 171 |
error(SYSTEM, "cannot start rtrace process"); |
| 172 |
rt.bsiz = maxbytes/(6*sizeof(float)); |
| 173 |
rt.buf = (float *)malloc(6*sizeof(float)*rt.bsiz--); |
| 174 |
rt.dest = (float **)malloc(sizeof(float *)*rt.bsiz); |
| 175 |
if (rt.buf == NULL || rt.dest == NULL) |
| 176 |
error(SYSTEM, "out of memory in init"); |
| 177 |
rt.nrays = 0; |
| 178 |
/* set up urand */ |
| 179 |
initurand(16384); |
| 180 |
} |
| 181 |
|
| 182 |
|
| 183 |
void |
| 184 |
eputs(s) /* put string to stderr */ |
| 185 |
register char *s; |
| 186 |
{ |
| 187 |
static int midline = 0; |
| 188 |
|
| 189 |
if (!*s) return; |
| 190 |
if (!midline) { |
| 191 |
fputs(progname, stderr); |
| 192 |
fputs(": ", stderr); |
| 193 |
} |
| 194 |
fputs(s, stderr); |
| 195 |
midline = s[strlen(s)-1] != '\n'; |
| 196 |
} |
| 197 |
|
| 198 |
|
| 199 |
void |
| 200 |
wputs(s) /* print warning if enabled */ |
| 201 |
char *s; |
| 202 |
{ |
| 203 |
if (warnings) |
| 204 |
eputs(s); |
| 205 |
} |
| 206 |
|
| 207 |
|
| 208 |
filter(infp, name) /* process stream */ |
| 209 |
register FILE *infp; |
| 210 |
char *name; |
| 211 |
{ |
| 212 |
char buf[512]; |
| 213 |
FILE *pfp; |
| 214 |
register int c; |
| 215 |
|
| 216 |
while ((c = getc(infp)) != EOF) { |
| 217 |
if (isspace(c)) |
| 218 |
continue; |
| 219 |
if (c == '#') { /* comment/options */ |
| 220 |
buf[0] = c; |
| 221 |
fgets(buf+1, sizeof(buf)-1, infp); |
| 222 |
xoptions(buf, name); |
| 223 |
} else if (c == '!') { /* command */ |
| 224 |
buf[0] = c; |
| 225 |
fgetline(buf+1, sizeof(buf)-1, infp); |
| 226 |
if ((pfp = popen(buf+1, "r")) == NULL) { |
| 227 |
sprintf(errmsg, "cannot execute \"%s\"", buf); |
| 228 |
error(SYSTEM, errmsg); |
| 229 |
} |
| 230 |
filter(pfp, buf); |
| 231 |
pclose(pfp); |
| 232 |
} else { /* object */ |
| 233 |
ungetc(c, infp); |
| 234 |
xobject(infp, name); |
| 235 |
} |
| 236 |
} |
| 237 |
} |
| 238 |
|
| 239 |
|
| 240 |
xoptions(s, nm) /* process options in string s */ |
| 241 |
char *s; |
| 242 |
char *nm; |
| 243 |
{ |
| 244 |
extern FILE *freopen(); |
| 245 |
char buf[64]; |
| 246 |
int nerrs = 0; |
| 247 |
register char *cp; |
| 248 |
|
| 249 |
if (strncmp(s, "#@mkillum", 9) || !isspace(s[9])) { |
| 250 |
fputs(s, stdout); /* not for us */ |
| 251 |
return; |
| 252 |
} |
| 253 |
cp = s+10; |
| 254 |
while (*cp) { |
| 255 |
switch (*cp) { |
| 256 |
case ' ': |
| 257 |
case '\t': |
| 258 |
case '\n': |
| 259 |
case '\r': |
| 260 |
case '\f': |
| 261 |
cp++; |
| 262 |
continue; |
| 263 |
case 'm': /* material name */ |
| 264 |
if (*++cp != '=') |
| 265 |
break; |
| 266 |
if (!*++cp || isspace(*cp)) |
| 267 |
break; |
| 268 |
atos(thisillum.matname, MAXSTR, cp); |
| 269 |
cp = sskip(cp); |
| 270 |
if (!(thisillum.flags & IL_DATCLB)) { |
| 271 |
strcpy(thisillum.datafile, thisillum.matname); |
| 272 |
thisillum.dfnum = 0; |
| 273 |
} |
| 274 |
continue; |
| 275 |
case 'f': /* data file name */ |
| 276 |
if (*++cp != '=') |
| 277 |
break; |
| 278 |
if (!*++cp || isspace(*cp)) { |
| 279 |
strcpy(thisillum.datafile,thisillum.matname); |
| 280 |
thisillum.dfnum = 0; |
| 281 |
thisillum.flags &= ~IL_DATCLB; |
| 282 |
continue; |
| 283 |
} |
| 284 |
atos(thisillum.datafile, MAXSTR, cp); |
| 285 |
cp = sskip(cp); |
| 286 |
thisillum.dfnum = 0; |
| 287 |
thisillum.flags |= IL_DATCLB; |
| 288 |
continue; |
| 289 |
case 'i': /* include material */ |
| 290 |
case 'e': /* exclude material */ |
| 291 |
if (cp[1] != '=') |
| 292 |
break; |
| 293 |
matselect = (*cp == 'i') ? S_ELEM : S_COMPL; |
| 294 |
cp += 2; |
| 295 |
atos(matcheck, MAXSTR, cp); |
| 296 |
cp = sskip(cp); |
| 297 |
continue; |
| 298 |
case 'a': /* use everything */ |
| 299 |
cp = sskip(cp); |
| 300 |
matselect = S_ALL; |
| 301 |
continue; |
| 302 |
case 'n': /* use nothing (passive) */ |
| 303 |
cp = sskip(cp); |
| 304 |
matselect = S_NONE; |
| 305 |
continue; |
| 306 |
case 'c': /* color calculation */ |
| 307 |
if (*++cp != '=') |
| 308 |
break; |
| 309 |
switch (*++cp) { |
| 310 |
case 'a': /* average */ |
| 311 |
thisillum.flags = (thisillum.flags|IL_COLAVG) |
| 312 |
& ~IL_COLDST; |
| 313 |
break; |
| 314 |
case 'd': /* distribution */ |
| 315 |
thisillum.flags |= (IL_COLDST|IL_COLAVG); |
| 316 |
break; |
| 317 |
case 'n': /* none */ |
| 318 |
thisillum.flags &= ~(IL_COLAVG|IL_COLDST); |
| 319 |
break; |
| 320 |
default: |
| 321 |
goto opterr; |
| 322 |
} |
| 323 |
cp = sskip(cp); |
| 324 |
continue; |
| 325 |
case 'd': /* point sample density */ |
| 326 |
if (*++cp != '=') |
| 327 |
break; |
| 328 |
if (!isintd(++cp, " \t\n\r")) |
| 329 |
break; |
| 330 |
thisillum.sampdens = atoi(cp); |
| 331 |
cp = sskip(cp); |
| 332 |
continue; |
| 333 |
case 's': /* point super-samples */ |
| 334 |
if (*++cp != '=') |
| 335 |
break; |
| 336 |
if (!isintd(++cp, " \t\n\r")) |
| 337 |
break; |
| 338 |
thisillum.nsamps = atoi(cp); |
| 339 |
cp = sskip(cp); |
| 340 |
continue; |
| 341 |
case 'l': /* light sources */ |
| 342 |
cp++; |
| 343 |
if (*cp == '+') |
| 344 |
thisillum.flags |= IL_LIGHT; |
| 345 |
else if (*cp == '-') |
| 346 |
thisillum.flags &= ~IL_LIGHT; |
| 347 |
else |
| 348 |
break; |
| 349 |
cp++; |
| 350 |
continue; |
| 351 |
case 'b': /* brightness */ |
| 352 |
if (*++cp != '=') |
| 353 |
break; |
| 354 |
if (!isfltd(++cp, " \t\n\r")) |
| 355 |
break; |
| 356 |
thisillum.minbrt = atof(cp); |
| 357 |
if (thisillum.minbrt < 0.) |
| 358 |
thisillum.minbrt = 0.; |
| 359 |
cp = sskip(cp); |
| 360 |
continue; |
| 361 |
case 'o': /* output file */ |
| 362 |
if (*++cp != '=') |
| 363 |
break; |
| 364 |
if (!*++cp || isspace(*cp)) |
| 365 |
break; |
| 366 |
atos(buf, sizeof(buf), cp); |
| 367 |
cp = sskip(cp); |
| 368 |
if (freopen(buf, "w", stdout) == NULL) { |
| 369 |
sprintf(errmsg, |
| 370 |
"cannot open output file \"%s\"", buf); |
| 371 |
error(SYSTEM, errmsg); |
| 372 |
} |
| 373 |
doneheader = 0; |
| 374 |
continue; |
| 375 |
case '!': /* processed file! */ |
| 376 |
sprintf(errmsg, "(%s): already processed!", nm); |
| 377 |
error(WARNING, errmsg); |
| 378 |
matselect = S_NONE; |
| 379 |
return; |
| 380 |
} |
| 381 |
opterr: /* skip faulty option */ |
| 382 |
while (*cp && !isspace(*cp)) |
| 383 |
cp++; |
| 384 |
nerrs++; |
| 385 |
} |
| 386 |
/* print header? */ |
| 387 |
checkhead(); |
| 388 |
/* issue warnings? */ |
| 389 |
if (nerrs) { |
| 390 |
sprintf(errmsg, "(%s): %d error(s) in option line:", |
| 391 |
nm, nerrs); |
| 392 |
error(WARNING, errmsg); |
| 393 |
wputs(s); |
| 394 |
printf("# %s: the following option line has %d error(s):\n", |
| 395 |
progname, nerrs); |
| 396 |
} |
| 397 |
/* print pure comment */ |
| 398 |
printf("# %s", s+2); |
| 399 |
} |
| 400 |
|
| 401 |
|
| 402 |
printopts() /* print out option default values */ |
| 403 |
{ |
| 404 |
printf("m=%-15s\t\t# material name\n", thisillum.matname); |
| 405 |
printf("f=%-15s\t\t# data file name\n", thisillum.datafile); |
| 406 |
if (thisillum.flags & IL_COLAVG) |
| 407 |
if (thisillum.flags & IL_COLDST) |
| 408 |
printf("c=d\t\t\t\t# color distribution\n"); |
| 409 |
else |
| 410 |
printf("c=a\t\t\t\t# color average\n"); |
| 411 |
else |
| 412 |
printf("c=n\t\t\t\t# color none\n"); |
| 413 |
if (thisillum.flags & IL_LIGHT) |
| 414 |
printf("l+\t\t\t\t# light type on\n"); |
| 415 |
else |
| 416 |
printf("l-\t\t\t\t# light type off\n"); |
| 417 |
printf("d=%d\t\t\t\t# density of points\n", thisillum.sampdens); |
| 418 |
printf("s=%d\t\t\t\t# samples per point\n", thisillum.nsamps); |
| 419 |
printf("b=%f\t\t\t# minimum average brightness\n", thisillum.minbrt); |
| 420 |
} |
| 421 |
|
| 422 |
|
| 423 |
printhead(ac, av) /* print out header */ |
| 424 |
register int ac; |
| 425 |
register char **av; |
| 426 |
{ |
| 427 |
putchar('#'); |
| 428 |
while (ac-- > 0) { |
| 429 |
putchar(' '); |
| 430 |
fputs(*av++, stdout); |
| 431 |
} |
| 432 |
fputs("\n#@mkillum !\n", stdout); |
| 433 |
} |
| 434 |
|
| 435 |
|
| 436 |
xobject(fp, nm) /* translate an object from fp */ |
| 437 |
FILE *fp; |
| 438 |
char *nm; |
| 439 |
{ |
| 440 |
OBJREC thisobj; |
| 441 |
char str[MAXSTR]; |
| 442 |
int doit; |
| 443 |
/* read the object */ |
| 444 |
if (fgetword(thisillum.altmat, MAXSTR, fp) == NULL) |
| 445 |
goto readerr; |
| 446 |
if (fgetword(str, MAXSTR, fp) == NULL) |
| 447 |
goto readerr; |
| 448 |
/* is it an alias? */ |
| 449 |
if (!strcmp(str, ALIASKEY)) { |
| 450 |
if (fgetword(str, MAXSTR, fp) == NULL) |
| 451 |
goto readerr; |
| 452 |
printf("\n%s %s %s", thisillum.altmat, ALIASKEY, str); |
| 453 |
if (fgetword(str, MAXSTR, fp) == NULL) |
| 454 |
goto readerr; |
| 455 |
printf("\t%s\n", str); |
| 456 |
return; |
| 457 |
} |
| 458 |
thisobj.omod = OVOID; /* unused field */ |
| 459 |
if ((thisobj.otype = otype(str)) < 0) { |
| 460 |
sprintf(errmsg, "(%s): unknown type \"%s\"", nm, str); |
| 461 |
error(USER, errmsg); |
| 462 |
} |
| 463 |
if (fgetword(str, MAXSTR, fp) == NULL) |
| 464 |
goto readerr; |
| 465 |
thisobj.oname = str; |
| 466 |
if (readfargs(&thisobj.oargs, fp) != 1) |
| 467 |
goto readerr; |
| 468 |
thisobj.os = NULL; |
| 469 |
/* check for translation */ |
| 470 |
switch (matselect) { |
| 471 |
case S_NONE: |
| 472 |
doit = 0; |
| 473 |
break; |
| 474 |
case S_ALL: |
| 475 |
doit = 1; |
| 476 |
break; |
| 477 |
case S_ELEM: |
| 478 |
doit = !strcmp(thisillum.altmat, matcheck); |
| 479 |
break; |
| 480 |
case S_COMPL: |
| 481 |
doit = strcmp(thisillum.altmat, matcheck); |
| 482 |
break; |
| 483 |
} |
| 484 |
doit = doit && issurface(thisobj.otype); |
| 485 |
/* print header? */ |
| 486 |
checkhead(); |
| 487 |
/* process object */ |
| 488 |
if (doit) |
| 489 |
(*ofun[thisobj.otype].funp)(&thisobj, &thisillum, &rt, nm); |
| 490 |
else |
| 491 |
printobj(thisillum.altmat, &thisobj); |
| 492 |
/* free arguments */ |
| 493 |
freefargs(&thisobj.oargs); |
| 494 |
return; |
| 495 |
readerr: |
| 496 |
sprintf(errmsg, "(%s): error reading scene", nm); |
| 497 |
error(USER, errmsg); |
| 498 |
} |
