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root/Development/ray/src/rt/rmain.c
Revision: 2.38
Committed: Fri Dec 8 18:49:14 1995 UTC (29 years, 11 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.37: +38 -1 lines
Log Message: 
added M_MIST (mist) material and global participating medium

File Contents

# User Rev Content
1 greg 2.38 /* Copyright (c) 1995 Regents of the University of California */
2 greg 1.1
3     #ifndef lint
4     static char SCCSid[] = "$SunId$ LBL";
5     #endif
6    
7     /*
8     * rmain.c - main for ray tracing programs
9     *
10     * 3/24/87
11     */
12    
13     /* for flaky pre-processors */
14 greg 2.10 #ifndef RPICT
15     #define RPICT 0
16 greg 1.1 #endif
17 greg 2.10 #ifndef RTRACE
18     #define RTRACE 0
19 greg 1.1 #endif
20 greg 2.10 #ifndef RVIEW
21     #define RVIEW 0
22 greg 1.1 #endif
23    
24     #include "ray.h"
25    
26 greg 1.50 #include "resolu.h"
27    
28 greg 1.1 #include "octree.h"
29    
30 greg 2.32 #include <sys/types.h>
31    
32 greg 1.1 #include <signal.h>
33    
34     #include "view.h"
35    
36 greg 2.10 #include "paths.h"
37 greg 2.23 /* persistent processes define */
38     #ifdef F_SETLKW
39     #if RPICT|RTRACE
40 greg 2.27 #define PERSIST 1 /* normal persist */
41     #define PARALLEL 2 /* parallel persist */
42     #define PCHILD 3 /* child of normal persist */
43 greg 2.23 #endif
44     #endif
45 greg 1.1
46     char *progname; /* argv[0] */
47    
48 greg 1.19 char *octname; /* octree name */
49    
50 greg 2.33 char *getlibpath(); /* library directory list */
51 greg 1.1
52     char *sigerr[NSIG]; /* signal error messages */
53    
54 greg 2.36 char *shm_boundary = NULL; /* boundary of shared memory */
55    
56 greg 1.46 extern char VersionID[]; /* version ID string */
57    
58 greg 1.1 extern int stderr_v(); /* standard error output */
59     int (*errvec)() = stderr_v; /* error output vector */
60     int (*wrnvec)() = stderr_v; /* warning output vector */
61     int (*cmdvec)() = NULL; /* command error vector */
62    
63     int (*trace)() = NULL; /* trace call */
64 greg 1.36 int do_irrad = 0; /* compute irradiance? */
65 greg 1.1
66 greg 2.32 extern time_t time();
67     time_t tstart; /* start time */
68 greg 1.34
69 greg 1.24 extern int ambnotify(); /* new object notify functions */
70 greg 2.25 #if RTRACE
71     extern int tranotify();
72     int (*addobjnotify[])() = {ambnotify, tranotify, NULL};
73     extern char *tralist[]; /* trace include/exclude list */
74     extern int traincl; /* include == 1, exclude == 0 */
75     #else
76 greg 1.24 int (*addobjnotify[])() = {ambnotify, NULL};
77 greg 2.25 #endif
78 greg 1.24
79 greg 1.1 CUBE thescene; /* our scene */
80 greg 2.10 OBJECT nsceneobjs; /* number of objects in our scene */
81 greg 1.1
82 greg 2.24 extern unsigned long raynum, nrays; /* ray counts */
83 greg 2.22
84 greg 1.36 extern int imm_irrad; /* calculate immediate irradiance? */
85    
86 greg 1.1 extern int ralrm; /* seconds between reports */
87    
88     extern int greyscale; /* map colors to brightness? */
89     extern char *devname; /* output device name */
90 greg 2.30 extern double exposure; /* exposure compensation */
91 greg 1.1
92 greg 2.8 extern char *formstr(); /* string from format */
93 greg 1.1 extern int inform; /* input format */
94     extern int outform; /* output format */
95     extern char *outvals; /* output values */
96    
97     extern VIEW ourview; /* viewing parameters */
98    
99 greg 2.28 extern char rifname[]; /* rad input file name */
100    
101 greg 1.1 extern int hresolu; /* horizontal resolution */
102     extern int vresolu; /* vertical resolution */
103 greg 1.22 extern double pixaspect; /* pixel aspect ratio */
104 greg 1.1
105     extern int psample; /* pixel sample size */
106     extern double maxdiff; /* max. sample difference */
107 greg 1.11 extern double dstrpix; /* square pixel distribution */
108 greg 1.1
109     extern double dstrsrc; /* square source distribution */
110 greg 1.11 extern double shadthresh; /* shadow threshold */
111 greg 1.15 extern double shadcert; /* shadow testing certainty */
112 greg 1.39 extern int directrelay; /* number of source relays */
113 greg 1.40 extern int vspretest; /* virtual source pretest density */
114 greg 2.17 extern int directvis; /* light sources visible to eye? */
115 greg 1.47 extern double srcsizerat; /* maximum source size/dist. ratio */
116 greg 1.1
117 greg 2.4 extern double specthresh; /* specular sampling threshold */
118     extern double specjitter; /* specular sampling jitter */
119    
120 greg 2.38 extern COLOR cextinction; /* global extinction coefficient */
121     extern double salbedo; /* global scattering albedo */
122     extern double seccg; /* global scattering eccentricity */
123     extern double ssampdist; /* scatter sampling distance */
124    
125 greg 2.35 extern int backvis; /* back face visibility */
126    
127 greg 1.1 extern int maxdepth; /* maximum recursion depth */
128     extern double minweight; /* minimum ray weight */
129    
130     extern COLOR ambval; /* ambient value */
131     extern double ambacc; /* ambient accuracy */
132     extern int ambres; /* ambient resolution */
133     extern int ambdiv; /* ambient divisions */
134     extern int ambssamp; /* ambient super-samples */
135     extern int ambounce; /* ambient bounces */
136     extern char *amblist[]; /* ambient include/exclude list */
137     extern int ambincl; /* include == 1, exclude == 0 */
138    
139    
140     main(argc, argv)
141     int argc;
142     char *argv[];
143     {
144 greg 2.10 #define check(ol,al) if (argv[i][ol] || \
145 greg 1.49 badarg(argc-i-1,argv+i+1,al)) \
146     goto badopt
147 greg 2.10 #define bool(olen,var) switch (argv[i][olen]) { \
148 greg 1.43 case '\0': var = !var; break; \
149     case 'y': case 'Y': case 't': case 'T': \
150     case '+': case '1': var = 1; break; \
151     case 'n': case 'N': case 'f': case 'F': \
152     case '-': case '0': var = 0; break; \
153     default: goto badopt; }
154 greg 1.1 char *err;
155     char *recover = NULL;
156 greg 2.7 char *outfile = NULL;
157 greg 1.20 char *zfile = NULL;
158 greg 1.1 char *errfile = NULL;
159     char *ambfile = NULL;
160     int loadflags = ~IO_FILES;
161 greg 2.7 int seqstart = 0;
162 greg 2.29 int persist = 0;
163 greg 2.25 char **amblp;
164     char **tralp;
165 greg 2.18 int duped1;
166 greg 2.7 int rval;
167 greg 1.1 int i;
168 greg 1.34 /* record start time */
169 greg 2.32 tstart = time((time_t *)NULL);
170 greg 1.1 /* global program name */
171 greg 2.11 progname = argv[0] = fixargv0(argv[0]);
172 greg 1.31 /* initialize object types */
173     initotypes();
174 greg 1.37 /* initialize urand */
175 greg 1.41 initurand(2048);
176 greg 1.10 /* option city */
177 greg 2.12 for (i = 1; i < argc; i++) {
178 greg 2.13 /* expand arguments */
179     while (rval = expandarg(&argc, &argv, i))
180     if (rval < 0) {
181     sprintf(errmsg, "cannot expand '%s'", argv[i]);
182     error(SYSTEM, errmsg);
183     }
184 greg 2.15 if (argv[i] == NULL || argv[i][0] != '-')
185 greg 2.12 break; /* break from options */
186 greg 1.46 if (!strcmp(argv[i], "-version")) {
187     puts(VersionID);
188     quit(0);
189     }
190 greg 1.18 if (!strcmp(argv[i], "-defaults") ||
191     !strcmp(argv[i], "-help")) {
192 greg 1.1 printdefaults();
193     quit(0);
194     }
195     #if RVIEW
196     if (!strcmp(argv[i], "-devices")) {
197     printdevices();
198     quit(0);
199     }
200     #endif
201 greg 1.21 #if RPICT|RVIEW
202     rval = getviewopt(&ourview, argc-i, argv+i);
203     if (rval >= 0) {
204     i += rval;
205     continue;
206     }
207     #endif
208 greg 1.1 switch (argv[i][1]) {
209     #if RPICT|RVIEW
210 greg 1.21 case 'v': /* view file */
211     if (argv[i][2] != 'f')
212 greg 1.10 goto badopt;
213 greg 1.49 check(3,"s");
214 greg 1.50 rval = viewfile(argv[++i], &ourview, NULL);
215 greg 1.21 if (rval < 0) {
216     sprintf(errmsg,
217     "cannot open view file \"%s\"",
218     argv[i]);
219     error(SYSTEM, errmsg);
220     } else if (rval == 0) {
221     sprintf(errmsg,
222     "bad view file \"%s\"",
223     argv[i]);
224     error(USER, errmsg);
225 greg 2.7 }
226 greg 1.1 break;
227     #endif
228 greg 2.35 case 'b': /* back face vis. */
229     if (argv[i][2] == 'v') {
230     bool(3,backvis);
231     break;
232     }
233     #if RVIEW
234     bool(2,greyscale);
235     break;
236     #else
237     goto badopt;
238     #endif
239 greg 1.11 case 'd': /* direct */
240 greg 1.1 switch (argv[i][2]) {
241 greg 1.13 case 't': /* threshold */
242 greg 1.49 check(3,"f");
243 greg 1.11 shadthresh = atof(argv[++i]);
244 greg 1.1 break;
245 greg 1.15 case 'c': /* certainty */
246 greg 1.49 check(3,"f");
247 greg 1.15 shadcert = atof(argv[++i]);
248     break;
249 greg 1.11 case 'j': /* jitter */
250 greg 1.49 check(3,"f");
251 greg 1.1 dstrsrc = atof(argv[++i]);
252     break;
253 greg 1.47 case 'r': /* relays */
254 greg 1.49 check(3,"i");
255 greg 1.39 directrelay = atoi(argv[++i]);
256     break;
257 greg 1.47 case 'p': /* pretest */
258 greg 1.49 check(3,"i");
259 greg 1.40 vspretest = atoi(argv[++i]);
260 greg 1.42 break;
261 greg 2.17 case 'v': /* visibility */
262     bool(3,directvis);
263 greg 1.40 break;
264 greg 1.47 case 's': /* size */
265 greg 1.49 check(3,"f");
266 greg 1.47 srcsizerat = atof(argv[++i]);
267     break;
268 greg 1.1 default:
269 greg 1.10 goto badopt;
270 greg 1.1 }
271     break;
272 greg 2.4 case 's': /* specular */
273     switch (argv[i][2]) {
274     case 't': /* threshold */
275     check(3,"f");
276     specthresh = atof(argv[++i]);
277     break;
278     case 'j': /* jitter */
279     check(3,"f");
280     specjitter = atof(argv[++i]);
281     break;
282     default:
283     goto badopt;
284     }
285     break;
286 greg 1.1 #if RPICT|RVIEW
287 greg 2.4 case 'p': /* pixel */
288 greg 1.1 switch (argv[i][2]) {
289 greg 2.4 case 's': /* sample */
290 greg 1.49 check(3,"i");
291 greg 1.1 psample = atoi(argv[++i]);
292     break;
293 greg 1.13 case 't': /* threshold */
294 greg 1.49 check(3,"f");
295 greg 1.1 maxdiff = atof(argv[++i]);
296     break;
297 greg 1.11 #if RPICT
298     case 'j': /* jitter */
299 greg 1.49 check(3,"f");
300 greg 1.11 dstrpix = atof(argv[++i]);
301     break;
302 greg 2.4 case 'a': /* aspect */
303     check(3,"f");
304     pixaspect = atof(argv[++i]);
305     break;
306 greg 1.11 #endif
307 greg 2.30 #if RVIEW
308     case 'e': /* exposure */
309     check(3,"f");
310     exposure = atof(argv[++i]);
311     if (argv[i][0] == '+' || argv[i][0] == '-')
312     exposure = pow(2.0, exposure);
313     break;
314     #endif
315 greg 1.1 default:
316 greg 1.10 goto badopt;
317 greg 1.1 }
318     break;
319     #endif
320 greg 1.22 #if RPICT|RTRACE
321 greg 1.1 case 'x': /* x resolution */
322 greg 1.49 check(2,"i");
323 greg 1.1 hresolu = atoi(argv[++i]);
324     break;
325     case 'y': /* y resolution */
326 greg 1.49 check(2,"i");
327 greg 1.1 vresolu = atoi(argv[++i]);
328     break;
329 greg 1.22 #endif
330 greg 1.1 case 'w': /* warnings */
331 greg 1.43 rval = wrnvec != NULL;
332     bool(2,rval);
333 greg 2.6 if (rval) wrnvec = stderr_v;
334     else wrnvec = NULL;
335 greg 1.1 break;
336     case 'e': /* error file */
337 greg 1.49 check(2,"s");
338 greg 1.1 errfile = argv[++i];
339     break;
340     case 'l': /* limit */
341     switch (argv[i][2]) {
342     case 'r': /* recursion */
343 greg 1.49 check(3,"i");
344 greg 1.1 maxdepth = atoi(argv[++i]);
345     break;
346     case 'w': /* weight */
347 greg 1.49 check(3,"f");
348 greg 1.1 minweight = atof(argv[++i]);
349     break;
350     default:
351 greg 1.10 goto badopt;
352 greg 1.1 }
353     break;
354 greg 1.36 case 'i': /* irradiance */
355 greg 1.43 bool(2,do_irrad);
356 greg 1.36 break;
357 greg 1.1 #if RPICT
358 greg 2.7 case 'S': /* slave index */
359     check(2,"i");
360     seqstart = atoi(argv[++i]);
361     break;
362     case 'o': /* output file */
363     check(2,"s");
364     outfile = argv[++i];
365     break;
366 greg 1.20 case 'z': /* z file */
367 greg 1.49 check(2,"s");
368 greg 1.20 zfile = argv[++i];
369     break;
370 greg 1.1 case 'r': /* recover file */
371 greg 2.16 if (argv[i][2] == 'o') { /* +output */
372     check(3,"s");
373     outfile = argv[i+1];
374     } else
375     check(2,"s");
376 greg 1.1 recover = argv[++i];
377     break;
378     case 't': /* timer */
379 greg 1.49 check(2,"i");
380 greg 1.1 ralrm = atoi(argv[++i]);
381     break;
382     #endif
383     case 'a': /* ambient */
384     switch (argv[i][2]) {
385     case 'v': /* value */
386 greg 1.49 check(3,"fff");
387 greg 1.1 setcolor(ambval, atof(argv[i+1]),
388     atof(argv[i+2]),
389     atof(argv[i+3]));
390     i += 3;
391     break;
392     case 'a': /* accuracy */
393 greg 1.49 check(3,"f");
394 greg 1.1 ambacc = atof(argv[++i]);
395     break;
396     case 'r': /* resolution */
397 greg 1.49 check(3,"i");
398 greg 1.1 ambres = atoi(argv[++i]);
399     break;
400     case 'd': /* divisions */
401 greg 1.49 check(3,"i");
402 greg 1.1 ambdiv = atoi(argv[++i]);
403     break;
404     case 's': /* super-samp */
405 greg 1.49 check(3,"i");
406 greg 1.1 ambssamp = atoi(argv[++i]);
407     break;
408     case 'b': /* bounces */
409 greg 1.49 check(3,"i");
410 greg 1.1 ambounce = atoi(argv[++i]);
411     break;
412     case 'i': /* include */
413 greg 2.5 case 'I':
414 greg 1.49 check(3,"s");
415 greg 1.1 if (ambincl != 1) {
416     ambincl = 1;
417     amblp = amblist;
418     }
419 greg 2.5 if (argv[i][2] == 'I') { /* file */
420 greg 2.13 rval = wordfile(amblp,
421 greg 2.33 getpath(argv[++i],getlibpath(),R_OK));
422 greg 2.5 if (rval < 0) {
423     sprintf(errmsg,
424     "cannot open ambient include file \"%s\"",
425     argv[i]);
426     error(SYSTEM, errmsg);
427     }
428     amblp += rval;
429 greg 2.25 } else {
430 greg 2.5 *amblp++ = argv[++i];
431 greg 2.25 *amblp = NULL;
432     }
433 greg 1.1 break;
434     case 'e': /* exclude */
435 greg 2.5 case 'E':
436 greg 1.49 check(3,"s");
437 greg 1.1 if (ambincl != 0) {
438     ambincl = 0;
439     amblp = amblist;
440     }
441 greg 2.5 if (argv[i][2] == 'E') { /* file */
442 greg 2.13 rval = wordfile(amblp,
443 greg 2.33 getpath(argv[++i],getlibpath(),R_OK));
444 greg 2.5 if (rval < 0) {
445     sprintf(errmsg,
446     "cannot open ambient exclude file \"%s\"",
447     argv[i]);
448     error(SYSTEM, errmsg);
449     }
450     amblp += rval;
451 greg 2.25 } else {
452 greg 2.5 *amblp++ = argv[++i];
453 greg 2.25 *amblp = NULL;
454     }
455 greg 1.1 break;
456     case 'f': /* file */
457 greg 1.49 check(3,"s");
458 greg 1.1 ambfile= argv[++i];
459     break;
460     default:
461 greg 1.10 goto badopt;
462 greg 1.1 }
463     break;
464 greg 2.38 case 'm': /* medium */
465     switch (argv[i][2]) {
466     case 'e': /* extinction */
467     check(3,"fff");
468     setcolor(cextinction, atof(argv[i+1]),
469     atof(argv[i+2]),
470     atof(argv[i+3]));
471     i += 3;
472     break;
473     case 'a': /* albedo */
474     check(3,"f");
475     salbedo = atof(argv[++i]);
476     break;
477     case 'g': /* eccentr. */
478     check(3,"f");
479     seccg = atof(argv[++i]);
480     break;
481     case 's': /* sampling */
482     check(3,"f");
483     ssampdist = atof(argv[++i]);
484     break;
485     default:
486     goto badopt;
487     }
488     break;
489 greg 1.1 #if RTRACE
490 greg 1.36 case 'I': /* immed. irradiance */
491 greg 1.43 bool(2,imm_irrad);
492 greg 1.36 break;
493 greg 1.1 case 'f': /* format i/o */
494     switch (argv[i][2]) {
495     case 'a': /* ascii */
496     case 'f': /* float */
497     case 'd': /* double */
498     inform = argv[i][2];
499     break;
500     default:
501 greg 1.10 goto badopt;
502 greg 1.1 }
503     switch (argv[i][3]) {
504     case '\0':
505     outform = inform;
506     break;
507     case 'a': /* ascii */
508     case 'f': /* float */
509     case 'd': /* double */
510 greg 2.7 case 'c': /* color */
511 greg 1.49 check(4,"");
512 greg 1.1 outform = argv[i][3];
513     break;
514     default:
515 greg 1.10 goto badopt;
516 greg 1.1 }
517     break;
518     case 'o': /* output */
519     outvals = argv[i]+2;
520     break;
521 greg 1.44 case 'h': /* header output */
522     rval = loadflags & IO_INFO;
523     bool(2,rval);
524     loadflags = rval ? loadflags | IO_INFO :
525     loadflags & ~IO_INFO;
526 greg 1.1 break;
527 greg 2.25 case 't': /* trace */
528     switch (argv[i][2]) {
529     case 'i': /* include */
530     case 'I':
531     check(3,"s");
532     if (traincl != 1) {
533     traincl = 1;
534     tralp = tralist;
535     }
536     if (argv[i][2] == 'I') { /* file */
537     rval = wordfile(tralp,
538 greg 2.33 getpath(argv[++i],getlibpath(),R_OK));
539 greg 2.25 if (rval < 0) {
540     sprintf(errmsg,
541     "cannot open trace include file \"%s\"",
542     argv[i]);
543     error(SYSTEM, errmsg);
544     }
545     tralp += rval;
546     } else {
547     *tralp++ = argv[++i];
548     *tralp = NULL;
549     }
550     break;
551     case 'e': /* exclude */
552     case 'E':
553     check(3,"s");
554     if (traincl != 0) {
555     traincl = 0;
556     tralp = tralist;
557     }
558     if (argv[i][2] == 'E') { /* file */
559     rval = wordfile(tralp,
560 greg 2.33 getpath(argv[++i],getlibpath(),R_OK));
561 greg 2.25 if (rval < 0) {
562     sprintf(errmsg,
563     "cannot open trace exclude file \"%s\"",
564     argv[i]);
565     error(SYSTEM, errmsg);
566     }
567     tralp += rval;
568     } else {
569     *tralp++ = argv[++i];
570     *tralp = NULL;
571     }
572     break;
573     default:
574     goto badopt;
575     }
576     break;
577 greg 1.1 #endif
578     #if RVIEW
579     case 'o': /* output device */
580 greg 1.49 check(2,"s");
581 greg 1.1 devname = argv[++i];
582 greg 2.28 break;
583     case 'R': /* render input file */
584     check(2,"s");
585     strcpy(rifname, argv[++i]);
586 greg 1.1 break;
587     #endif
588 greg 2.18 #ifdef PERSIST
589     case 'P': /* persist file */
590     if (argv[i][2] == 'P') {
591     check(3,"s");
592 greg 2.27 persist = PARALLEL;
593 greg 2.18 } else {
594     check(2,"s");
595 greg 2.27 persist = PERSIST;
596 greg 2.18 }
597     persistfile(argv[++i]);
598     break;
599     #endif
600 greg 1.1 default:
601 greg 1.19 goto badopt;
602 greg 1.1 }
603     }
604     #if RPICT|RVIEW
605     err = setview(&ourview); /* set viewing parameters */
606     if (err != NULL)
607     error(USER, err);
608     #endif
609     /* set up signal handling */
610     sigdie(SIGINT, "Interrupt");
611     sigdie(SIGHUP, "Hangup");
612     sigdie(SIGTERM, "Terminate");
613     sigdie(SIGPIPE, "Broken pipe");
614 greg 1.45 sigdie(SIGALRM, "Alarm clock");
615 greg 2.10 #ifdef SIGXCPU
616 greg 1.1 sigdie(SIGXCPU, "CPU limit exceeded");
617     sigdie(SIGXFSZ, "File size exceeded");
618     #endif
619     /* open error file */
620     if (errfile != NULL) {
621     if (freopen(errfile, "a", stderr) == NULL)
622 greg 1.14 quit(2);
623 greg 1.1 fprintf(stderr, "**************\n*** PID %5d: ",
624     getpid());
625     printargs(argc, argv, stderr);
626 greg 2.12 putc('\n', stderr);
627 greg 1.1 fflush(stderr);
628     }
629 greg 2.10 #ifdef NICE
630 greg 1.1 nice(NICE); /* lower priority */
631     #endif
632 greg 1.19 /* get octree */
633 greg 1.1 #if RVIEW
634     loadflags &= ~IO_INFO;
635     #endif
636     if (i == argc)
637 greg 1.19 octname = NULL;
638     else if (i == argc-1)
639     octname = argv[i];
640 greg 1.1 else
641 greg 1.19 goto badopt;
642 greg 2.7 if (
643     #if RPICT
644     seqstart > 0 &&
645     #endif
646     octname == NULL)
647 greg 1.19 error(USER, "missing octree argument");
648 greg 2.26 /* set up output */
649 greg 2.18 #ifdef PERSIST
650     if (persist) {
651 greg 2.7 #if RPICT
652 greg 2.26 if (recover != NULL)
653     error(USER, "persist option used with recover file");
654 greg 2.18 if (seqstart <= 0)
655     error(USER, "persist option only for sequences");
656 greg 2.26 if (outfile == NULL)
657 greg 2.18 #endif
658     duped1 = dup(fileno(stdout)); /* don't lose our output */
659     openheader();
660     }
661     #if RPICT
662 greg 2.27 else
663     #endif
664     #endif
665     #if RPICT
666 greg 2.7 if (outfile != NULL)
667     openheader();
668 greg 1.1 #endif
669 greg 2.10 #ifdef MSDOS
670     #if RTRACE
671     if (outform != 'a')
672     #endif
673     setmode(fileno(stdout), O_BINARY);
674     if (octname == NULL)
675     setmode(fileno(stdin), O_BINARY);
676     #endif
677 greg 1.19 readoct(octname, loadflags, &thescene, NULL);
678 greg 2.9 nsceneobjs = nobjects;
679 greg 1.1
680     if (loadflags & IO_INFO) { /* print header */
681     printargs(i, argv, stdout);
682 greg 1.46 printf("SOFTWARE= %s\n", VersionID);
683 greg 2.8 #if RTRACE
684     fputformat(formstr(outform), stdout);
685     putchar('\n');
686     #endif
687 greg 1.1 }
688    
689     marksources(); /* find and mark sources */
690    
691 greg 1.24 setambient(ambfile); /* initialize ambient calculation */
692 greg 1.1
693 greg 2.18 #ifdef PERSIST
694     if (persist) {
695 greg 2.26 fflush(stdout);
696     if (outfile == NULL) { /* reconnect stdout */
697     dup2(duped1, fileno(stdout));
698     close(duped1);
699     }
700 greg 2.27 if (persist == PARALLEL) { /* multiprocessing */
701 greg 2.18 preload_objs(); /* preload scene */
702 greg 2.36 strcpy(shm_boundary=bmalloc(16), "SHM_BOUNDARY");
703 greg 2.18 while ((rval=fork()) == 0) { /* keep on forkin' */
704     pflock(1);
705     pfhold();
706 greg 2.32 tstart = time((time_t *)NULL);
707 greg 2.18 }
708     if (rval < 0)
709     error(SYSTEM, "cannot fork child for persist function");
710 greg 2.27 pfdetach(); /* parent exits */
711 greg 2.18 }
712     }
713     runagain:
714 greg 2.27 if (persist)
715     if (outfile == NULL) /* if out to stdout */
716     dupheader(); /* send header */
717     else /* if out to file */
718     duped1 = dup(fileno(stdout)); /* hang onto pipe */
719 greg 2.18 #endif
720 greg 1.1 #if RPICT
721 greg 2.7 rpict(seqstart, outfile, zfile, recover);
722 greg 1.1 #endif
723     #if RTRACE
724 greg 2.8 rtrace(NULL);
725 greg 1.1 #endif
726     #if RVIEW
727 greg 2.8 rview();
728 greg 2.18 #endif
729 greg 2.21 ambsync(); /* flush ambient file */
730 greg 2.18 #ifdef PERSIST
731 greg 2.27 if (persist == PERSIST) { /* first run-through */
732 greg 2.20 if ((rval=fork()) == 0) { /* child loops until killed */
733     pflock(1);
734 greg 2.27 persist = PCHILD;
735 greg 2.20 } else { /* original process exits */
736     if (rval < 0)
737     error(SYSTEM, "cannot fork child for persist function");
738 greg 2.27 pfdetach(); /* parent exits */
739 greg 2.20 }
740     }
741 greg 2.27 if (persist == PCHILD) { /* wait for a signal then go again */
742     if (outfile != NULL)
743     close(duped1); /* release output handle */
744 greg 2.20 pfhold();
745 greg 2.32 tstart = time((time_t *)NULL); /* reinitialize */
746 greg 2.22 raynum = nrays = 0;
747 greg 2.18 goto runagain;
748     }
749 greg 1.1 #endif
750     quit(0);
751 greg 1.19
752     badopt:
753     sprintf(errmsg, "command line error at '%s'", argv[i]);
754     error(USER, errmsg);
755    
756 greg 2.10 #undef check
757     #undef bool
758 greg 1.1 }
759    
760    
761     eputs(s) /* error output */
762     char *s;
763     {
764     if (errvec != NULL)
765     (*errvec)(s);
766     }
767    
768    
769     wputs(s) /* warning output */
770     char *s;
771     {
772 greg 2.3 int lasterrno = errno; /* save errno */
773    
774 greg 1.1 if (wrnvec != NULL)
775     (*wrnvec)(s);
776 greg 2.3
777     errno = lasterrno;
778 greg 1.1 }
779    
780    
781     cputs(s) /* command error output */
782     char *s;
783     {
784     if (cmdvec != NULL)
785     (*cmdvec)(s);
786     }
787    
788    
789     stderr_v(s) /* put string to stderr */
790     register char *s;
791     {
792 greg 1.26 static int midline = 0;
793 greg 1.1
794 greg 1.27 if (!*s)
795     return;
796 greg 1.26 if (!midline++) {
797 greg 1.1 fputs(progname, stderr);
798     fputs(": ", stderr);
799     }
800     fputs(s, stderr);
801 greg 1.27 if (s[strlen(s)-1] == '\n') {
802 greg 1.1 fflush(stderr);
803 greg 1.26 midline = 0;
804 greg 1.1 }
805     }
806    
807    
808     onsig(signo) /* fatal signal */
809     int signo;
810     {
811 greg 1.8 static int gotsig = 0;
812    
813     if (gotsig++) /* two signals and we're gone! */
814 greg 1.9 _exit(signo);
815 greg 1.8
816 greg 1.48 alarm(15); /* allow 15 seconds to clean up */
817     signal(SIGALRM, SIG_DFL); /* make certain we do die */
818 greg 1.1 eputs("signal - ");
819     eputs(sigerr[signo]);
820     eputs("\n");
821 greg 1.14 quit(3);
822 greg 1.1 }
823    
824    
825     sigdie(signo, msg) /* set fatal signal */
826     int signo;
827     char *msg;
828     {
829     if (signal(signo, onsig) == SIG_IGN)
830     signal(signo, SIG_IGN);
831     sigerr[signo] = msg;
832     }
833    
834    
835     printdefaults() /* print default values to stdout */
836     {
837     register char *cp;
838    
839 greg 1.43 #if RTRACE
840     if (imm_irrad)
841     printf("-I+\t\t\t\t# immediate irradiance on\n");
842     else
843     #endif
844     printf(do_irrad ? "-i+\t\t\t\t# irradiance calculation on\n" :
845     "-i-\t\t\t\t# irradiance calculation off\n");
846 greg 1.49 #if RVIEW
847     printf(greyscale ? "-b+\t\t\t\t# greyscale on\n" :
848     "-b-\t\t\t\t# greyscale off\n");
849     #endif
850 greg 1.1 #if RPICT|RVIEW
851 greg 1.7 printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
852 greg 1.1 ourview.type==VT_PER ? "perspective" :
853     ourview.type==VT_PAR ? "parallel" :
854 greg 1.28 ourview.type==VT_HEM ? "hemispherical" :
855     ourview.type==VT_ANG ? "angular" :
856 greg 2.37 ourview.type==VT_CYL ? "cylindrical" :
857 greg 1.1 "unknown");
858     printf("-vp %f %f %f\t# view point\n",
859     ourview.vp[0], ourview.vp[1], ourview.vp[2]);
860 greg 2.11 printf("-vd %f %f %f\t# view direction\n",
861 greg 1.1 ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
862 greg 2.11 printf("-vu %f %f %f\t# view up\n",
863 greg 1.1 ourview.vup[0], ourview.vup[1], ourview.vup[2]);
864     printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
865     printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
866 greg 2.34 printf("-vo %f\t\t\t# view fore clipping plane\n", ourview.vfore);
867     printf("-va %f\t\t\t# view aft clipping plane\n", ourview.vaft);
868 greg 1.22 printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
869     printf("-vl %f\t\t\t# view lift\n", ourview.voff);
870 greg 1.1 #endif
871 greg 1.22 #if RPICT|RTRACE
872 greg 1.1 printf("-x %-9d\t\t\t# x resolution\n", hresolu);
873     printf("-y %-9d\t\t\t# y resolution\n", vresolu);
874 greg 1.22 #endif
875     #if RPICT
876 greg 2.4 printf("-pa %f\t\t\t# pixel aspect ratio\n", pixaspect);
877     printf("-pj %f\t\t\t# pixel jitter\n", dstrpix);
878 greg 2.30 #endif
879     #if RVIEW
880     printf("-pe %f\t\t\t# pixel exposure\n", exposure);
881 greg 1.22 #endif
882 greg 1.1 #if RPICT|RVIEW
883 greg 2.4 printf("-ps %-9d\t\t\t# pixel sample\n", psample);
884     printf("-pt %f\t\t\t# pixel threshold\n", maxdiff);
885 greg 1.22 #endif
886 greg 2.35 printf(backvis ? "-bv+\t\t\t\t# back face visibility on\n" :
887     "-bv-\t\t\t\t# back face visibility off\n");
888 greg 1.29 printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
889     printf("-dc %f\t\t\t# direct certainty\n", shadcert);
890     printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
891 greg 1.47 printf("-ds %f\t\t\t# direct sampling\n", srcsizerat);
892 greg 1.39 printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
893 greg 1.40 printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
894 greg 2.17 printf(directvis ? "-dv+\t\t\t\t# direct visibility on\n" :
895     "-dv-\t\t\t\t# direct visibility off\n");
896 greg 2.4 printf("-sj %f\t\t\t# specular jitter\n", specjitter);
897     printf("-st %f\t\t\t# specular threshold\n", specthresh);
898 greg 1.1 printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
899     colval(ambval,GRN), colval(ambval, BLU));
900     printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
901     printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
902     printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
903     printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
904     printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
905 greg 2.38 printf("-me %.2e %.2e %.2e\t# extinction coefficient\n",
906     colval(cextinction,RED),
907     colval(cextinction,GRN),
908     colval(cextinction,BLU));
909     printf("-ma %f\t\t\t# scattering albedo\n", salbedo);
910     printf("-mg %f\t\t\t# scattering eccentricity\n", seccg);
911     printf("-ms %f\t\t\t# mist sampling distance\n", ssampdist);
912 greg 1.1 printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
913     printf("-lw %f\t\t\t# limit weight\n", minweight);
914     #if RPICT
915     printf("-t %-9d\t\t\t# time between reports\n", ralrm);
916     #endif
917     #if RVIEW
918     printf("-o %s\t\t\t\t# output device\n", devname);
919     #endif
920     #if RTRACE
921     printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
922 greg 2.7 inform, outform, formstr(inform), formstr(outform));
923 greg 1.1 printf("-o%s\t\t\t\t# output", outvals);
924     for (cp = outvals; *cp; cp++)
925     switch (*cp) {
926     case 't': printf(" trace"); break;
927     case 'o': printf(" origin"); break;
928     case 'd': printf(" direction"); break;
929     case 'v': printf(" value"); break;
930     case 'l': printf(" length"); break;
931 greg 2.14 case 'L': printf(" first_length"); break;
932 greg 1.1 case 'p': printf(" point"); break;
933     case 'n': printf(" normal"); break;
934 greg 2.14 case 'N': printf(" unperturbed_normal"); break;
935 greg 1.1 case 's': printf(" surface"); break;
936     case 'w': printf(" weight"); break;
937     case 'm': printf(" modifier"); break;
938     }
939 greg 2.7 putchar('\n');
940 greg 1.1 #endif
941 greg 1.43 printf(wrnvec != NULL ? "-w+\t\t\t\t# warning messages on\n" :
942     "-w-\t\t\t\t# warning messages off\n");
943 greg 1.1 }