| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rcmain.c,v 2.5 2012/06/21 17:14:32 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* rcmain.c - main for rtcontrib ray contribution tracer |
| 6 |
*/ |
| 7 |
|
| 8 |
#include "copyright.h" |
| 9 |
|
| 10 |
#include <signal.h> |
| 11 |
#include "rcontrib.h" |
| 12 |
#include "random.h" |
| 13 |
#include "source.h" |
| 14 |
#include "ambient.h" |
| 15 |
|
| 16 |
int gargc; /* global argc */ |
| 17 |
char **gargv; /* global argv */ |
| 18 |
char *octname; /* global octree name */ |
| 19 |
char *progname; /* global argv[0] */ |
| 20 |
|
| 21 |
char *sigerr[NSIG]; /* signal error messages */ |
| 22 |
|
| 23 |
int nproc = 1; /* number of processes requested */ |
| 24 |
int nchild = 0; /* number of children (-1 in child) */ |
| 25 |
|
| 26 |
int inpfmt = 'a'; /* input format */ |
| 27 |
int outfmt = 'a'; /* output format */ |
| 28 |
|
| 29 |
int header = 1; /* output header? */ |
| 30 |
int force_open = 0; /* truncate existing output? */ |
| 31 |
int recover = 0; /* recover previous output? */ |
| 32 |
int accumulate = 1; /* input rays per output record */ |
| 33 |
int contrib = 0; /* computing contributions? */ |
| 34 |
|
| 35 |
int xres = 0; /* horizontal (scan) size */ |
| 36 |
int yres = 0; /* vertical resolution */ |
| 37 |
|
| 38 |
int using_stdout = 0; /* are we using stdout? */ |
| 39 |
|
| 40 |
int imm_irrad = 0; /* compute immediate irradiance? */ |
| 41 |
int lim_dist = 0; /* limit distance? */ |
| 42 |
|
| 43 |
const char *modname[MAXMODLIST]; /* ordered modifier name list */ |
| 44 |
int nmods = 0; /* number of modifiers */ |
| 45 |
|
| 46 |
void (*addobjnotify[8])() = {ambnotify, NULL}; |
| 47 |
|
| 48 |
char RCCONTEXT[] = "RCONTRIB"; /* our special evaluation context */ |
| 49 |
|
| 50 |
|
| 51 |
static void |
| 52 |
printdefaults(void) /* print default values to stdout */ |
| 53 |
{ |
| 54 |
char *cp; |
| 55 |
|
| 56 |
printf("-c %-5d\t\t\t# accumulated rays per record\n", accumulate); |
| 57 |
printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-', |
| 58 |
contrib ? "contributions" : "coefficients"); |
| 59 |
if (imm_irrad) |
| 60 |
printf("-I+\t\t\t\t# immediate irradiance on\n"); |
| 61 |
printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc); |
| 62 |
printf("-x %-9d\t\t\t# %s\n", xres, |
| 63 |
yres && xres ? "x resolution" : "flush interval"); |
| 64 |
printf("-y %-9d\t\t\t# y resolution\n", yres); |
| 65 |
printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" : |
| 66 |
"-ld-\t\t\t\t# limit distance off\n"); |
| 67 |
printf("-h%c\t\t\t\t# %s header\n", header ? '+' : '-', |
| 68 |
header ? "output" : "no"); |
| 69 |
printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n", |
| 70 |
inpfmt, outfmt, formstr(inpfmt), formstr(outfmt)); |
| 71 |
printf(erract[WARNING].pf != NULL ? |
| 72 |
"-w+\t\t\t\t# warning messages on\n" : |
| 73 |
"-w-\t\t\t\t# warning messages off\n"); |
| 74 |
print_rdefaults(); |
| 75 |
} |
| 76 |
|
| 77 |
|
| 78 |
static void |
| 79 |
onsig( /* fatal signal */ |
| 80 |
int signo |
| 81 |
) |
| 82 |
{ |
| 83 |
static int gotsig = 0; |
| 84 |
|
| 85 |
if (gotsig++) /* two signals and we're gone! */ |
| 86 |
_exit(signo); |
| 87 |
|
| 88 |
#ifdef SIGALRM |
| 89 |
alarm(15); /* allow 15 seconds to clean up */ |
| 90 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
| 91 |
#endif |
| 92 |
eputs("signal - "); |
| 93 |
eputs(sigerr[signo]); |
| 94 |
eputs("\n"); |
| 95 |
quit(3); |
| 96 |
} |
| 97 |
|
| 98 |
|
| 99 |
static void |
| 100 |
sigdie( /* set fatal signal */ |
| 101 |
int signo, |
| 102 |
char *msg |
| 103 |
) |
| 104 |
{ |
| 105 |
if (signal(signo, onsig) == SIG_IGN) |
| 106 |
signal(signo, SIG_IGN); |
| 107 |
sigerr[signo] = msg; |
| 108 |
} |
| 109 |
|
| 110 |
|
| 111 |
/* set input/output format */ |
| 112 |
static void |
| 113 |
setformat(const char *fmt) |
| 114 |
{ |
| 115 |
switch (fmt[0]) { |
| 116 |
case 'f': |
| 117 |
case 'd': |
| 118 |
SET_FILE_BINARY(stdin); |
| 119 |
/* fall through */ |
| 120 |
case 'a': |
| 121 |
inpfmt = fmt[0]; |
| 122 |
break; |
| 123 |
default: |
| 124 |
goto fmterr; |
| 125 |
} |
| 126 |
switch (fmt[1]) { |
| 127 |
case '\0': |
| 128 |
outfmt = inpfmt; |
| 129 |
return; |
| 130 |
case 'a': |
| 131 |
case 'f': |
| 132 |
case 'd': |
| 133 |
case 'c': |
| 134 |
outfmt = fmt[1]; |
| 135 |
break; |
| 136 |
default: |
| 137 |
goto fmterr; |
| 138 |
} |
| 139 |
if (!fmt[2]) |
| 140 |
return; |
| 141 |
fmterr: |
| 142 |
sprintf(errmsg, "Illegal i/o format: -f%s", fmt); |
| 143 |
error(USER, errmsg); |
| 144 |
} |
| 145 |
|
| 146 |
|
| 147 |
/* Set overriding options */ |
| 148 |
static void |
| 149 |
override_options(void) |
| 150 |
{ |
| 151 |
shadthresh = 0; |
| 152 |
ambssamp = 0; |
| 153 |
ambacc = 0; |
| 154 |
if (accumulate <= 0) /* no output flushing for single record */ |
| 155 |
xres = yres = 0; |
| 156 |
} |
| 157 |
|
| 158 |
|
| 159 |
int |
| 160 |
main(int argc, char *argv[]) |
| 161 |
{ |
| 162 |
#define check(ol,al) if (argv[i][ol] || \ |
| 163 |
badarg(argc-i-1,argv+i+1,al)) \ |
| 164 |
goto badopt |
| 165 |
#define bool(olen,var) switch (argv[i][olen]) { \ |
| 166 |
case '\0': var = !var; break; \ |
| 167 |
case 'y': case 'Y': case 't': case 'T': \ |
| 168 |
case '+': case '1': var = 1; break; \ |
| 169 |
case 'n': case 'N': case 'f': case 'F': \ |
| 170 |
case '-': case '0': var = 0; break; \ |
| 171 |
default: goto badopt; } |
| 172 |
int nprocs = 1; |
| 173 |
char *curout = NULL; |
| 174 |
char *binval = NULL; |
| 175 |
int bincnt = 0; |
| 176 |
int rval; |
| 177 |
int i; |
| 178 |
/* global program name */ |
| 179 |
progname = argv[0] = fixargv0(argv[0]); |
| 180 |
gargv = argv; |
| 181 |
gargc = argc; |
| 182 |
/* initialize calcomp routines early */ |
| 183 |
initfunc(); |
| 184 |
setcontext(RCCONTEXT); |
| 185 |
/* option city */ |
| 186 |
for (i = 1; i < argc; i++) { |
| 187 |
/* expand arguments */ |
| 188 |
while ((rval = expandarg(&argc, &argv, i)) > 0) |
| 189 |
; |
| 190 |
if (rval < 0) { |
| 191 |
sprintf(errmsg, "cannot expand '%s'", argv[i]); |
| 192 |
error(SYSTEM, errmsg); |
| 193 |
} |
| 194 |
if (argv[i] == NULL || argv[i][0] != '-') |
| 195 |
break; /* break from options */ |
| 196 |
if (!strcmp(argv[i], "-version")) { |
| 197 |
puts(VersionID); |
| 198 |
quit(0); |
| 199 |
} |
| 200 |
if (!strcmp(argv[i], "-defaults") || |
| 201 |
!strcmp(argv[i], "-help")) { |
| 202 |
override_options(); |
| 203 |
printdefaults(); |
| 204 |
quit(0); |
| 205 |
} |
| 206 |
rval = getrenderopt(argc-i, argv+i); |
| 207 |
if (rval >= 0) { |
| 208 |
i += rval; |
| 209 |
continue; |
| 210 |
} |
| 211 |
switch (argv[i][1]) { |
| 212 |
case 'n': /* number of cores */ |
| 213 |
check(2,"i"); |
| 214 |
nproc = atoi(argv[++i]); |
| 215 |
if (nproc <= 0) |
| 216 |
error(USER, "bad number of processes"); |
| 217 |
break; |
| 218 |
case 'V': /* output contributions */ |
| 219 |
bool(2,contrib); |
| 220 |
break; |
| 221 |
case 'x': /* x resolution */ |
| 222 |
check(2,"i"); |
| 223 |
xres = atoi(argv[++i]); |
| 224 |
break; |
| 225 |
case 'y': /* y resolution */ |
| 226 |
check(2,"i"); |
| 227 |
yres = atoi(argv[++i]); |
| 228 |
break; |
| 229 |
case 'w': /* warnings */ |
| 230 |
rval = (erract[WARNING].pf != NULL); |
| 231 |
bool(2,rval); |
| 232 |
if (rval) erract[WARNING].pf = wputs; |
| 233 |
else erract[WARNING].pf = NULL; |
| 234 |
break; |
| 235 |
case 'e': /* expression */ |
| 236 |
check(2,"s"); |
| 237 |
scompile(argv[++i], NULL, 0); |
| 238 |
break; |
| 239 |
case 'l': /* limit distance */ |
| 240 |
if (argv[i][2] != 'd') |
| 241 |
goto badopt; |
| 242 |
bool(3,lim_dist); |
| 243 |
break; |
| 244 |
case 'I': /* immed. irradiance */ |
| 245 |
bool(2,imm_irrad); |
| 246 |
break; |
| 247 |
case 'f': /* file or force or format */ |
| 248 |
if (!argv[i][2]) { |
| 249 |
check(2,"s"); |
| 250 |
loadfunc(argv[++i]); |
| 251 |
break; |
| 252 |
} |
| 253 |
if (argv[i][2] == 'o') { |
| 254 |
bool(3,force_open); |
| 255 |
break; |
| 256 |
} |
| 257 |
setformat(argv[i]+2); |
| 258 |
break; |
| 259 |
case 'o': /* output */ |
| 260 |
check(2,"s"); |
| 261 |
curout = argv[++i]; |
| 262 |
break; |
| 263 |
case 'c': /* input rays per output */ |
| 264 |
check(2,"i"); |
| 265 |
accumulate = atoi(argv[++i]); |
| 266 |
break; |
| 267 |
case 'r': /* recover output */ |
| 268 |
bool(2,recover); |
| 269 |
break; |
| 270 |
case 'h': /* header output */ |
| 271 |
bool(2,header); |
| 272 |
break; |
| 273 |
case 'b': /* bin expression/count */ |
| 274 |
if (argv[i][2] == 'n') { |
| 275 |
check(3,"s"); |
| 276 |
bincnt = (int)(eval(argv[++i]) + .5); |
| 277 |
break; |
| 278 |
} |
| 279 |
check(2,"s"); |
| 280 |
binval = argv[++i]; |
| 281 |
break; |
| 282 |
case 'm': /* modifier name */ |
| 283 |
check(2,"s"); |
| 284 |
addmodifier(argv[++i], curout, binval, bincnt); |
| 285 |
break; |
| 286 |
case 'M': /* modifier file */ |
| 287 |
check(2,"s"); |
| 288 |
addmodfile(argv[++i], curout, binval, bincnt); |
| 289 |
break; |
| 290 |
default: |
| 291 |
goto badopt; |
| 292 |
} |
| 293 |
} |
| 294 |
/* override some option settings */ |
| 295 |
override_options(); |
| 296 |
/* initialize object types */ |
| 297 |
initotypes(); |
| 298 |
/* initialize urand */ |
| 299 |
if (rand_samp) { |
| 300 |
srandom((long)time(0)); |
| 301 |
initurand(0); |
| 302 |
} else { |
| 303 |
srandom(0L); |
| 304 |
initurand(2048); |
| 305 |
} |
| 306 |
/* set up signal handling */ |
| 307 |
sigdie(SIGINT, "Interrupt"); |
| 308 |
#ifdef SIGHUP |
| 309 |
sigdie(SIGHUP, "Hangup"); |
| 310 |
#endif |
| 311 |
sigdie(SIGTERM, "Terminate"); |
| 312 |
#ifdef SIGPIPE |
| 313 |
sigdie(SIGPIPE, "Broken pipe"); |
| 314 |
#endif |
| 315 |
#ifdef SIGALRM |
| 316 |
sigdie(SIGALRM, "Alarm clock"); |
| 317 |
#endif |
| 318 |
#ifdef SIGXCPU |
| 319 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
| 320 |
sigdie(SIGXFSZ, "File size exceeded"); |
| 321 |
#endif |
| 322 |
#ifdef NICE |
| 323 |
nice(NICE); /* lower priority */ |
| 324 |
#endif |
| 325 |
/* get octree */ |
| 326 |
if (i == argc) |
| 327 |
octname = NULL; |
| 328 |
else if (i == argc-1) |
| 329 |
octname = argv[i]; |
| 330 |
else |
| 331 |
goto badopt; |
| 332 |
if (octname == NULL) |
| 333 |
error(USER, "missing octree argument"); |
| 334 |
|
| 335 |
readoct(octname, ~(IO_FILES|IO_INFO), &thescene, NULL); |
| 336 |
nsceneobjs = nobjects; |
| 337 |
|
| 338 |
marksources(); /* find and mark sources */ |
| 339 |
|
| 340 |
setambient(); /* initialize ambient calculation */ |
| 341 |
|
| 342 |
rcontrib(); /* trace ray contributions (loop) */ |
| 343 |
|
| 344 |
ambsync(); /* flush ambient file */ |
| 345 |
|
| 346 |
quit(0); /* exit clean */ |
| 347 |
|
| 348 |
badopt: |
| 349 |
fprintf(stderr, |
| 350 |
"Usage: %s [-n nprocs][-V][-r][-e expr][-f source][-o ospec][-b binv][-bn N] {-m mod | -M file} [rtrace options] octree\n", |
| 351 |
progname); |
| 352 |
sprintf(errmsg, "command line error at '%s'", argv[i]); |
| 353 |
error(USER, errmsg); |
| 354 |
return(1); /* pro forma return */ |
| 355 |
|
| 356 |
#undef check |
| 357 |
#undef bool |
| 358 |
} |
| 359 |
|
| 360 |
|
| 361 |
void |
| 362 |
wputs( /* warning output function */ |
| 363 |
char *s |
| 364 |
) |
| 365 |
{ |
| 366 |
int lasterrno = errno; |
| 367 |
eputs(s); |
| 368 |
errno = lasterrno; |
| 369 |
} |
| 370 |
|
| 371 |
|
| 372 |
void |
| 373 |
eputs( /* put string to stderr */ |
| 374 |
char *s |
| 375 |
) |
| 376 |
{ |
| 377 |
static int midline = 0; |
| 378 |
|
| 379 |
if (!*s) |
| 380 |
return; |
| 381 |
if (!midline++) { |
| 382 |
fputs(progname, stderr); |
| 383 |
fputs(": ", stderr); |
| 384 |
} |
| 385 |
fputs(s, stderr); |
| 386 |
if (s[strlen(s)-1] == '\n') { |
| 387 |
fflush(stderr); |
| 388 |
midline = 0; |
| 389 |
} |
| 390 |
} |
