| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rtmain.c,v 2.9 2004/03/30 16:13:01 schorsch Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* rtmain.c - main for rtrace per-ray calculation program |
| 6 |
*/ |
| 7 |
|
| 8 |
#include "copyright.h" |
| 9 |
|
| 10 |
#include <sys/types.h> |
| 11 |
#include <signal.h> |
| 12 |
|
| 13 |
#include "platform.h" |
| 14 |
#include "rtprocess.h" /* getpid() */ |
| 15 |
#include "resolu.h" |
| 16 |
#include "ray.h" |
| 17 |
#include "source.h" |
| 18 |
#include "ambient.h" |
| 19 |
#include "random.h" |
| 20 |
#include "paths.h" |
| 21 |
|
| 22 |
/* persistent processes define */ |
| 23 |
#ifdef F_SETLKW |
| 24 |
#define PERSIST 1 /* normal persist */ |
| 25 |
#define PARALLEL 2 /* parallel persist */ |
| 26 |
#define PCHILD 3 /* child of normal persist */ |
| 27 |
#endif |
| 28 |
|
| 29 |
char *progname; /* argv[0] */ |
| 30 |
char *octname; /* octree name */ |
| 31 |
char *sigerr[NSIG]; /* signal error messages */ |
| 32 |
char *shm_boundary = NULL; /* boundary of shared memory */ |
| 33 |
char *errfile = NULL; /* error output file */ |
| 34 |
|
| 35 |
extern char *formstr(); /* string from format */ |
| 36 |
extern int inform; /* input format */ |
| 37 |
extern int outform; /* output format */ |
| 38 |
extern char *outvals; /* output values */ |
| 39 |
|
| 40 |
extern int hresolu; /* horizontal resolution */ |
| 41 |
extern int vresolu; /* vertical resolution */ |
| 42 |
|
| 43 |
extern int imm_irrad; /* compute immediate irradiance? */ |
| 44 |
extern int lim_dist; /* limit distance? */ |
| 45 |
|
| 46 |
extern char *tralist[]; /* list of modifers to trace (or no) */ |
| 47 |
extern int traincl; /* include == 1, exclude == 0 */ |
| 48 |
|
| 49 |
static int loadflags = ~IO_FILES; /* what to load from octree */ |
| 50 |
|
| 51 |
static void onsig(int signo); |
| 52 |
static void sigdie(int signo, char *msg); |
| 53 |
static void printdefaults(void); |
| 54 |
|
| 55 |
|
| 56 |
int |
| 57 |
main(int argc, char *argv[]) |
| 58 |
{ |
| 59 |
#define check(ol,al) if (argv[i][ol] || \ |
| 60 |
badarg(argc-i-1,argv+i+1,al)) \ |
| 61 |
goto badopt |
| 62 |
#define bool(olen,var) switch (argv[i][olen]) { \ |
| 63 |
case '\0': var = !var; break; \ |
| 64 |
case 'y': case 'Y': case 't': case 'T': \ |
| 65 |
case '+': case '1': var = 1; break; \ |
| 66 |
case 'n': case 'N': case 'f': case 'F': \ |
| 67 |
case '-': case '0': var = 0; break; \ |
| 68 |
default: goto badopt; } |
| 69 |
int persist = 0; |
| 70 |
char **tralp; |
| 71 |
int duped1; |
| 72 |
int rval; |
| 73 |
int i; |
| 74 |
/* global program name */ |
| 75 |
progname = argv[0] = fixargv0(argv[0]); |
| 76 |
/* option city */ |
| 77 |
for (i = 1; i < argc; i++) { |
| 78 |
/* expand arguments */ |
| 79 |
while ((rval = expandarg(&argc, &argv, i)) > 0) |
| 80 |
; |
| 81 |
if (rval < 0) { |
| 82 |
sprintf(errmsg, "cannot expand '%s'", argv[i]); |
| 83 |
error(SYSTEM, errmsg); |
| 84 |
} |
| 85 |
if (argv[i] == NULL || argv[i][0] != '-') |
| 86 |
break; /* break from options */ |
| 87 |
if (!strcmp(argv[i], "-version")) { |
| 88 |
puts(VersionID); |
| 89 |
quit(0); |
| 90 |
} |
| 91 |
if (!strcmp(argv[i], "-defaults") || |
| 92 |
!strcmp(argv[i], "-help")) { |
| 93 |
printdefaults(); |
| 94 |
quit(0); |
| 95 |
} |
| 96 |
rval = getrenderopt(argc-i, argv+i); |
| 97 |
if (rval >= 0) { |
| 98 |
i += rval; |
| 99 |
continue; |
| 100 |
} |
| 101 |
switch (argv[i][1]) { |
| 102 |
case 'x': /* x resolution */ |
| 103 |
check(2,"i"); |
| 104 |
hresolu = atoi(argv[++i]); |
| 105 |
break; |
| 106 |
case 'y': /* y resolution */ |
| 107 |
check(2,"i"); |
| 108 |
vresolu = atoi(argv[++i]); |
| 109 |
break; |
| 110 |
case 'w': /* warnings */ |
| 111 |
rval = erract[WARNING].pf != NULL; |
| 112 |
bool(2,rval); |
| 113 |
if (rval) erract[WARNING].pf = wputs; |
| 114 |
else erract[WARNING].pf = NULL; |
| 115 |
break; |
| 116 |
case 'e': /* error file */ |
| 117 |
check(2,"s"); |
| 118 |
errfile = argv[++i]; |
| 119 |
break; |
| 120 |
case 'l': /* limit distance */ |
| 121 |
if (argv[i][2] != 'd') |
| 122 |
goto badopt; |
| 123 |
bool(3,lim_dist); |
| 124 |
break; |
| 125 |
case 'I': /* immed. irradiance */ |
| 126 |
bool(2,imm_irrad); |
| 127 |
break; |
| 128 |
case 'f': /* format i/o */ |
| 129 |
switch (argv[i][2]) { |
| 130 |
case 'a': /* ascii */ |
| 131 |
case 'f': /* float */ |
| 132 |
case 'd': /* double */ |
| 133 |
inform = argv[i][2]; |
| 134 |
break; |
| 135 |
default: |
| 136 |
goto badopt; |
| 137 |
} |
| 138 |
switch (argv[i][3]) { |
| 139 |
case '\0': |
| 140 |
outform = inform; |
| 141 |
break; |
| 142 |
case 'a': /* ascii */ |
| 143 |
case 'f': /* float */ |
| 144 |
case 'd': /* double */ |
| 145 |
case 'c': /* color */ |
| 146 |
check(4,""); |
| 147 |
outform = argv[i][3]; |
| 148 |
break; |
| 149 |
default: |
| 150 |
goto badopt; |
| 151 |
} |
| 152 |
break; |
| 153 |
case 'o': /* output */ |
| 154 |
outvals = argv[i]+2; |
| 155 |
break; |
| 156 |
case 'h': /* header output */ |
| 157 |
rval = loadflags & IO_INFO; |
| 158 |
bool(2,rval); |
| 159 |
loadflags = rval ? loadflags | IO_INFO : |
| 160 |
loadflags & ~IO_INFO; |
| 161 |
break; |
| 162 |
case 't': /* trace */ |
| 163 |
switch (argv[i][2]) { |
| 164 |
case 'i': /* include */ |
| 165 |
case 'I': |
| 166 |
check(3,"s"); |
| 167 |
if (traincl != 1) { |
| 168 |
traincl = 1; |
| 169 |
tralp = tralist; |
| 170 |
} |
| 171 |
if (argv[i][2] == 'I') { /* file */ |
| 172 |
rval = wordfile(tralp, |
| 173 |
getpath(argv[++i],getrlibpath(),R_OK)); |
| 174 |
if (rval < 0) { |
| 175 |
sprintf(errmsg, |
| 176 |
"cannot open trace include file \"%s\"", |
| 177 |
argv[i]); |
| 178 |
error(SYSTEM, errmsg); |
| 179 |
} |
| 180 |
tralp += rval; |
| 181 |
} else { |
| 182 |
*tralp++ = argv[++i]; |
| 183 |
*tralp = NULL; |
| 184 |
} |
| 185 |
break; |
| 186 |
case 'e': /* exclude */ |
| 187 |
case 'E': |
| 188 |
check(3,"s"); |
| 189 |
if (traincl != 0) { |
| 190 |
traincl = 0; |
| 191 |
tralp = tralist; |
| 192 |
} |
| 193 |
if (argv[i][2] == 'E') { /* file */ |
| 194 |
rval = wordfile(tralp, |
| 195 |
getpath(argv[++i],getrlibpath(),R_OK)); |
| 196 |
if (rval < 0) { |
| 197 |
sprintf(errmsg, |
| 198 |
"cannot open trace exclude file \"%s\"", |
| 199 |
argv[i]); |
| 200 |
error(SYSTEM, errmsg); |
| 201 |
} |
| 202 |
tralp += rval; |
| 203 |
} else { |
| 204 |
*tralp++ = argv[++i]; |
| 205 |
*tralp = NULL; |
| 206 |
} |
| 207 |
break; |
| 208 |
default: |
| 209 |
goto badopt; |
| 210 |
} |
| 211 |
break; |
| 212 |
#ifdef PERSIST |
| 213 |
case 'P': /* persist file */ |
| 214 |
if (argv[i][2] == 'P') { |
| 215 |
check(3,"s"); |
| 216 |
persist = PARALLEL; |
| 217 |
} else { |
| 218 |
check(2,"s"); |
| 219 |
persist = PERSIST; |
| 220 |
} |
| 221 |
persistfile(argv[++i]); |
| 222 |
break; |
| 223 |
#endif |
| 224 |
default: |
| 225 |
goto badopt; |
| 226 |
} |
| 227 |
} |
| 228 |
/* initialize object types */ |
| 229 |
initotypes(); |
| 230 |
/* initialize urand */ |
| 231 |
initurand(2048); |
| 232 |
/* set up signal handling */ |
| 233 |
sigdie(SIGINT, "Interrupt"); |
| 234 |
#ifdef SIGHUP |
| 235 |
sigdie(SIGHUP, "Hangup"); |
| 236 |
#endif |
| 237 |
sigdie(SIGTERM, "Terminate"); |
| 238 |
#ifdef SIGPIPE |
| 239 |
sigdie(SIGPIPE, "Broken pipe"); |
| 240 |
#endif |
| 241 |
#ifdef SIGALRM |
| 242 |
sigdie(SIGALRM, "Alarm clock"); |
| 243 |
#endif |
| 244 |
#ifdef SIGXCPU |
| 245 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
| 246 |
sigdie(SIGXFSZ, "File size exceeded"); |
| 247 |
#endif |
| 248 |
/* open error file */ |
| 249 |
if (errfile != NULL) { |
| 250 |
if (freopen(errfile, "a", stderr) == NULL) |
| 251 |
quit(2); |
| 252 |
fprintf(stderr, "**************\n*** PID %5d: ", |
| 253 |
getpid()); |
| 254 |
printargs(argc, argv, stderr); |
| 255 |
putc('\n', stderr); |
| 256 |
fflush(stderr); |
| 257 |
} |
| 258 |
#ifdef NICE |
| 259 |
nice(NICE); /* lower priority */ |
| 260 |
#endif |
| 261 |
/* get octree */ |
| 262 |
if (i == argc) |
| 263 |
octname = NULL; |
| 264 |
else if (i == argc-1) |
| 265 |
octname = argv[i]; |
| 266 |
else |
| 267 |
goto badopt; |
| 268 |
if (octname == NULL) |
| 269 |
error(USER, "missing octree argument"); |
| 270 |
/* set up output */ |
| 271 |
#ifdef PERSIST |
| 272 |
if (persist) { |
| 273 |
duped1 = dup(fileno(stdout)); /* don't lose our output */ |
| 274 |
openheader(); |
| 275 |
} |
| 276 |
#endif |
| 277 |
#ifdef _WIN32 |
| 278 |
if (outform != 'a') |
| 279 |
SET_FILE_BINARY(stdout); |
| 280 |
if (octname == NULL) |
| 281 |
SET_FILE_BINARY(stdin); |
| 282 |
#endif |
| 283 |
readoct(octname, loadflags, &thescene, NULL); |
| 284 |
nsceneobjs = nobjects; |
| 285 |
|
| 286 |
if (loadflags & IO_INFO) { /* print header */ |
| 287 |
printargs(i, argv, stdout); |
| 288 |
printf("SOFTWARE= %s\n", VersionID); |
| 289 |
fputnow(stdout); |
| 290 |
fputformat(formstr(outform), stdout); |
| 291 |
putchar('\n'); |
| 292 |
} |
| 293 |
|
| 294 |
marksources(); /* find and mark sources */ |
| 295 |
|
| 296 |
setambient(); /* initialize ambient calculation */ |
| 297 |
|
| 298 |
#ifdef PERSIST |
| 299 |
if (persist) { |
| 300 |
fflush(stdout); |
| 301 |
/* reconnect stdout */ |
| 302 |
dup2(duped1, fileno(stdout)); |
| 303 |
close(duped1); |
| 304 |
if (persist == PARALLEL) { /* multiprocessing */ |
| 305 |
preload_objs(); /* preload scene */ |
| 306 |
shm_boundary = (char *)malloc(16); |
| 307 |
strcpy(shm_boundary, "SHM_BOUNDARY"); |
| 308 |
while ((rval=fork()) == 0) { /* keep on forkin' */ |
| 309 |
pflock(1); |
| 310 |
pfhold(); |
| 311 |
} |
| 312 |
if (rval < 0) |
| 313 |
error(SYSTEM, "cannot fork child for persist function"); |
| 314 |
pfdetach(); /* parent exits */ |
| 315 |
} |
| 316 |
} |
| 317 |
runagain: |
| 318 |
if (persist) |
| 319 |
dupheader(); /* send header to stdout */ |
| 320 |
#endif |
| 321 |
/* trace rays */ |
| 322 |
rtrace(NULL); |
| 323 |
/* flush ambient file */ |
| 324 |
ambsync(); |
| 325 |
#ifdef PERSIST |
| 326 |
if (persist == PERSIST) { /* first run-through */ |
| 327 |
if ((rval=fork()) == 0) { /* child loops until killed */ |
| 328 |
pflock(1); |
| 329 |
persist = PCHILD; |
| 330 |
} else { /* original process exits */ |
| 331 |
if (rval < 0) |
| 332 |
error(SYSTEM, "cannot fork child for persist function"); |
| 333 |
pfdetach(); /* parent exits */ |
| 334 |
} |
| 335 |
} |
| 336 |
if (persist == PCHILD) { /* wait for a signal then go again */ |
| 337 |
close(duped1); /* release output handle */ |
| 338 |
pfhold(); |
| 339 |
raynum = nrays = 0; /* reinitialize */ |
| 340 |
goto runagain; |
| 341 |
} |
| 342 |
#endif |
| 343 |
quit(0); |
| 344 |
|
| 345 |
badopt: |
| 346 |
sprintf(errmsg, "command line error at '%s'", argv[i]); |
| 347 |
error(USER, errmsg); |
| 348 |
return 1; /* pro forma return */ |
| 349 |
|
| 350 |
#undef check |
| 351 |
#undef bool |
| 352 |
} |
| 353 |
|
| 354 |
|
| 355 |
void |
| 356 |
wputs( /* warning output function */ |
| 357 |
char *s |
| 358 |
) |
| 359 |
{ |
| 360 |
int lasterrno = errno; |
| 361 |
eputs(s); |
| 362 |
errno = lasterrno; |
| 363 |
} |
| 364 |
|
| 365 |
|
| 366 |
void |
| 367 |
eputs( /* put string to stderr */ |
| 368 |
register char *s |
| 369 |
) |
| 370 |
{ |
| 371 |
static int midline = 0; |
| 372 |
|
| 373 |
if (!*s) |
| 374 |
return; |
| 375 |
if (!midline++) { |
| 376 |
fputs(progname, stderr); |
| 377 |
fputs(": ", stderr); |
| 378 |
} |
| 379 |
fputs(s, stderr); |
| 380 |
if (s[strlen(s)-1] == '\n') { |
| 381 |
fflush(stderr); |
| 382 |
midline = 0; |
| 383 |
} |
| 384 |
} |
| 385 |
|
| 386 |
|
| 387 |
static void |
| 388 |
onsig( /* fatal signal */ |
| 389 |
int signo |
| 390 |
) |
| 391 |
{ |
| 392 |
static int gotsig = 0; |
| 393 |
|
| 394 |
if (gotsig++) /* two signals and we're gone! */ |
| 395 |
_exit(signo); |
| 396 |
|
| 397 |
#ifdef SIGALRM |
| 398 |
alarm(15); /* allow 15 seconds to clean up */ |
| 399 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
| 400 |
#endif |
| 401 |
eputs("signal - "); |
| 402 |
eputs(sigerr[signo]); |
| 403 |
eputs("\n"); |
| 404 |
quit(3); |
| 405 |
} |
| 406 |
|
| 407 |
|
| 408 |
static void |
| 409 |
sigdie( /* set fatal signal */ |
| 410 |
int signo, |
| 411 |
char *msg |
| 412 |
) |
| 413 |
{ |
| 414 |
if (signal(signo, onsig) == SIG_IGN) |
| 415 |
signal(signo, SIG_IGN); |
| 416 |
sigerr[signo] = msg; |
| 417 |
} |
| 418 |
|
| 419 |
|
| 420 |
static void |
| 421 |
printdefaults(void) /* print default values to stdout */ |
| 422 |
{ |
| 423 |
register char *cp; |
| 424 |
|
| 425 |
if (imm_irrad) |
| 426 |
printf("-I+\t\t\t\t# immediate irradiance on\n"); |
| 427 |
printf("-x %-9d\t\t\t# x resolution (flush interval)\n", hresolu); |
| 428 |
printf("-y %-9d\t\t\t# y resolution\n", vresolu); |
| 429 |
printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" : |
| 430 |
"-ld-\t\t\t\t# limit distance off\n"); |
| 431 |
printf("-h%c\t\t\t\t# %s header\n", loadflags & IO_INFO ? '+' : '-', |
| 432 |
loadflags & IO_INFO ? "output" : "no"); |
| 433 |
printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n", |
| 434 |
inform, outform, formstr(inform), formstr(outform)); |
| 435 |
printf("-o%-9s\t\t\t# output", outvals); |
| 436 |
for (cp = outvals; *cp; cp++) |
| 437 |
switch (*cp) { |
| 438 |
case 't': case 'T': printf(" trace"); break; |
| 439 |
case 'o': printf(" origin"); break; |
| 440 |
case 'd': printf(" direction"); break; |
| 441 |
case 'v': printf(" value"); break; |
| 442 |
case 'l': printf(" length"); break; |
| 443 |
case 'L': printf(" first_length"); break; |
| 444 |
case 'p': printf(" point"); break; |
| 445 |
case 'n': printf(" normal"); break; |
| 446 |
case 'N': printf(" unperturbed_normal"); break; |
| 447 |
case 's': printf(" surface"); break; |
| 448 |
case 'w': printf(" weight"); break; |
| 449 |
case 'm': printf(" modifier"); break; |
| 450 |
case 'M': printf(" material"); break; |
| 451 |
case 'W': printf(" contribution"); break; |
| 452 |
case '-': printf(" stroke"); break; |
| 453 |
} |
| 454 |
putchar('\n'); |
| 455 |
printf(erract[WARNING].pf != NULL ? |
| 456 |
"-w+\t\t\t\t# warning messages on\n" : |
| 457 |
"-w-\t\t\t\t# warning messages off\n"); |
| 458 |
print_rdefaults(); |
| 459 |
} |
