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root/radiance/ray/src/rt/rmain.c
Revision: 2.34
Committed: Tue Dec 20 20:18:25 1994 UTC (30 years, 5 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.33: +3 -1 lines
Log Message: 
added -vo and -va (fore and aft clipping plane) view options

File Contents

# User Rev Content
1 greg 2.34 /* Copyright (c) 1994 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 1.46 extern char VersionID[]; /* version ID string */
55    
56 greg 1.1 extern int stderr_v(); /* standard error output */
57     int (*errvec)() = stderr_v; /* error output vector */
58     int (*wrnvec)() = stderr_v; /* warning output vector */
59     int (*cmdvec)() = NULL; /* command error vector */
60    
61     int (*trace)() = NULL; /* trace call */
62 greg 1.36 int do_irrad = 0; /* compute irradiance? */
63 greg 1.1
64 greg 2.32 extern time_t time();
65     time_t tstart; /* start time */
66 greg 1.34
67 greg 1.24 extern int ambnotify(); /* new object notify functions */
68 greg 2.25 #if RTRACE
69     extern int tranotify();
70     int (*addobjnotify[])() = {ambnotify, tranotify, NULL};
71     extern char *tralist[]; /* trace include/exclude list */
72     extern int traincl; /* include == 1, exclude == 0 */
73     #else
74 greg 1.24 int (*addobjnotify[])() = {ambnotify, NULL};
75 greg 2.25 #endif
76 greg 1.24
77 greg 1.1 CUBE thescene; /* our scene */
78 greg 2.10 OBJECT nsceneobjs; /* number of objects in our scene */
79 greg 1.1
80 greg 2.24 extern unsigned long raynum, nrays; /* ray counts */
81 greg 2.22
82 greg 1.36 extern int imm_irrad; /* calculate immediate irradiance? */
83    
84 greg 1.1 extern int ralrm; /* seconds between reports */
85    
86     extern int greyscale; /* map colors to brightness? */
87     extern char *devname; /* output device name */
88 greg 2.30 extern double exposure; /* exposure compensation */
89 greg 1.1
90 greg 2.8 extern char *formstr(); /* string from format */
91 greg 1.1 extern int inform; /* input format */
92     extern int outform; /* output format */
93     extern char *outvals; /* output values */
94    
95     extern VIEW ourview; /* viewing parameters */
96    
97 greg 2.28 extern char rifname[]; /* rad input file name */
98    
99 greg 1.1 extern int hresolu; /* horizontal resolution */
100     extern int vresolu; /* vertical resolution */
101 greg 1.22 extern double pixaspect; /* pixel aspect ratio */
102 greg 1.1
103     extern int psample; /* pixel sample size */
104     extern double maxdiff; /* max. sample difference */
105 greg 1.11 extern double dstrpix; /* square pixel distribution */
106 greg 1.1
107     extern double dstrsrc; /* square source distribution */
108 greg 1.11 extern double shadthresh; /* shadow threshold */
109 greg 1.15 extern double shadcert; /* shadow testing certainty */
110 greg 1.39 extern int directrelay; /* number of source relays */
111 greg 1.40 extern int vspretest; /* virtual source pretest density */
112 greg 2.17 extern int directvis; /* light sources visible to eye? */
113 greg 1.47 extern double srcsizerat; /* maximum source size/dist. ratio */
114 greg 1.1
115 greg 2.4 extern double specthresh; /* specular sampling threshold */
116     extern double specjitter; /* specular sampling jitter */
117    
118 greg 1.1 extern int maxdepth; /* maximum recursion depth */
119     extern double minweight; /* minimum ray weight */
120    
121     extern COLOR ambval; /* ambient value */
122     extern double ambacc; /* ambient accuracy */
123     extern int ambres; /* ambient resolution */
124     extern int ambdiv; /* ambient divisions */
125     extern int ambssamp; /* ambient super-samples */
126     extern int ambounce; /* ambient bounces */
127     extern char *amblist[]; /* ambient include/exclude list */
128     extern int ambincl; /* include == 1, exclude == 0 */
129    
130    
131     main(argc, argv)
132     int argc;
133     char *argv[];
134     {
135 greg 2.10 #define check(ol,al) if (argv[i][ol] || \
136 greg 1.49 badarg(argc-i-1,argv+i+1,al)) \
137     goto badopt
138 greg 2.10 #define bool(olen,var) switch (argv[i][olen]) { \
139 greg 1.43 case '\0': var = !var; break; \
140     case 'y': case 'Y': case 't': case 'T': \
141     case '+': case '1': var = 1; break; \
142     case 'n': case 'N': case 'f': case 'F': \
143     case '-': case '0': var = 0; break; \
144     default: goto badopt; }
145 greg 1.1 char *err;
146     char *recover = NULL;
147 greg 2.7 char *outfile = NULL;
148 greg 1.20 char *zfile = NULL;
149 greg 1.1 char *errfile = NULL;
150     char *ambfile = NULL;
151     int loadflags = ~IO_FILES;
152 greg 2.7 int seqstart = 0;
153 greg 2.29 int persist = 0;
154 greg 2.25 char **amblp;
155     char **tralp;
156 greg 2.18 int duped1;
157 greg 2.7 int rval;
158 greg 1.1 int i;
159 greg 1.34 /* record start time */
160 greg 2.32 tstart = time((time_t *)NULL);
161 greg 1.1 /* global program name */
162 greg 2.11 progname = argv[0] = fixargv0(argv[0]);
163 greg 1.31 /* initialize object types */
164     initotypes();
165 greg 1.37 /* initialize urand */
166 greg 1.41 initurand(2048);
167 greg 1.10 /* option city */
168 greg 2.12 for (i = 1; i < argc; i++) {
169 greg 2.13 /* expand arguments */
170     while (rval = expandarg(&argc, &argv, i))
171     if (rval < 0) {
172     sprintf(errmsg, "cannot expand '%s'", argv[i]);
173     error(SYSTEM, errmsg);
174     }
175 greg 2.15 if (argv[i] == NULL || argv[i][0] != '-')
176 greg 2.12 break; /* break from options */
177 greg 1.46 if (!strcmp(argv[i], "-version")) {
178     puts(VersionID);
179     quit(0);
180     }
181 greg 1.18 if (!strcmp(argv[i], "-defaults") ||
182     !strcmp(argv[i], "-help")) {
183 greg 1.1 printdefaults();
184     quit(0);
185     }
186     #if RVIEW
187     if (!strcmp(argv[i], "-devices")) {
188     printdevices();
189     quit(0);
190     }
191     #endif
192 greg 1.21 #if RPICT|RVIEW
193     rval = getviewopt(&ourview, argc-i, argv+i);
194     if (rval >= 0) {
195     i += rval;
196     continue;
197     }
198     #endif
199 greg 1.1 switch (argv[i][1]) {
200     #if RPICT|RVIEW
201 greg 1.21 case 'v': /* view file */
202     if (argv[i][2] != 'f')
203 greg 1.10 goto badopt;
204 greg 1.49 check(3,"s");
205 greg 1.50 rval = viewfile(argv[++i], &ourview, NULL);
206 greg 1.21 if (rval < 0) {
207     sprintf(errmsg,
208     "cannot open view file \"%s\"",
209     argv[i]);
210     error(SYSTEM, errmsg);
211     } else if (rval == 0) {
212     sprintf(errmsg,
213     "bad view file \"%s\"",
214     argv[i]);
215     error(USER, errmsg);
216 greg 2.7 }
217 greg 1.1 break;
218     #endif
219 greg 1.11 case 'd': /* direct */
220 greg 1.1 switch (argv[i][2]) {
221 greg 1.13 case 't': /* threshold */
222 greg 1.49 check(3,"f");
223 greg 1.11 shadthresh = atof(argv[++i]);
224 greg 1.1 break;
225 greg 1.15 case 'c': /* certainty */
226 greg 1.49 check(3,"f");
227 greg 1.15 shadcert = atof(argv[++i]);
228     break;
229 greg 1.11 case 'j': /* jitter */
230 greg 1.49 check(3,"f");
231 greg 1.1 dstrsrc = atof(argv[++i]);
232     break;
233 greg 1.47 case 'r': /* relays */
234 greg 1.49 check(3,"i");
235 greg 1.39 directrelay = atoi(argv[++i]);
236     break;
237 greg 1.47 case 'p': /* pretest */
238 greg 1.49 check(3,"i");
239 greg 1.40 vspretest = atoi(argv[++i]);
240 greg 1.42 break;
241 greg 2.17 case 'v': /* visibility */
242     bool(3,directvis);
243 greg 1.40 break;
244 greg 1.47 case 's': /* size */
245 greg 1.49 check(3,"f");
246 greg 1.47 srcsizerat = atof(argv[++i]);
247     break;
248 greg 1.1 default:
249 greg 1.10 goto badopt;
250 greg 1.1 }
251     break;
252 greg 2.4 case 's': /* specular */
253     switch (argv[i][2]) {
254     case 't': /* threshold */
255     check(3,"f");
256     specthresh = atof(argv[++i]);
257     break;
258     case 'j': /* jitter */
259     check(3,"f");
260     specjitter = atof(argv[++i]);
261     break;
262     default:
263     goto badopt;
264     }
265     break;
266 greg 1.1 #if RPICT|RVIEW
267 greg 2.4 case 'p': /* pixel */
268 greg 1.1 switch (argv[i][2]) {
269 greg 2.4 case 's': /* sample */
270 greg 1.49 check(3,"i");
271 greg 1.1 psample = atoi(argv[++i]);
272     break;
273 greg 1.13 case 't': /* threshold */
274 greg 1.49 check(3,"f");
275 greg 1.1 maxdiff = atof(argv[++i]);
276     break;
277 greg 1.11 #if RPICT
278     case 'j': /* jitter */
279 greg 1.49 check(3,"f");
280 greg 1.11 dstrpix = atof(argv[++i]);
281     break;
282 greg 2.4 case 'a': /* aspect */
283     check(3,"f");
284     pixaspect = atof(argv[++i]);
285     break;
286 greg 1.11 #endif
287 greg 2.30 #if RVIEW
288     case 'e': /* exposure */
289     check(3,"f");
290     exposure = atof(argv[++i]);
291     if (argv[i][0] == '+' || argv[i][0] == '-')
292     exposure = pow(2.0, exposure);
293     break;
294     #endif
295 greg 1.1 default:
296 greg 1.10 goto badopt;
297 greg 1.1 }
298     break;
299     #endif
300 greg 1.22 #if RPICT|RTRACE
301 greg 1.1 case 'x': /* x resolution */
302 greg 1.49 check(2,"i");
303 greg 1.1 hresolu = atoi(argv[++i]);
304     break;
305     case 'y': /* y resolution */
306 greg 1.49 check(2,"i");
307 greg 1.1 vresolu = atoi(argv[++i]);
308     break;
309 greg 1.22 #endif
310 greg 1.1 case 'w': /* warnings */
311 greg 1.43 rval = wrnvec != NULL;
312     bool(2,rval);
313 greg 2.6 if (rval) wrnvec = stderr_v;
314     else wrnvec = NULL;
315 greg 1.1 break;
316     case 'e': /* error file */
317 greg 1.49 check(2,"s");
318 greg 1.1 errfile = argv[++i];
319     break;
320     case 'l': /* limit */
321     switch (argv[i][2]) {
322     case 'r': /* recursion */
323 greg 1.49 check(3,"i");
324 greg 1.1 maxdepth = atoi(argv[++i]);
325     break;
326     case 'w': /* weight */
327 greg 1.49 check(3,"f");
328 greg 1.1 minweight = atof(argv[++i]);
329     break;
330     default:
331 greg 1.10 goto badopt;
332 greg 1.1 }
333     break;
334 greg 1.36 case 'i': /* irradiance */
335 greg 1.43 bool(2,do_irrad);
336 greg 1.36 break;
337 greg 1.1 #if RPICT
338 greg 2.7 case 'S': /* slave index */
339     check(2,"i");
340     seqstart = atoi(argv[++i]);
341     break;
342     case 'o': /* output file */
343     check(2,"s");
344     outfile = argv[++i];
345     break;
346 greg 1.20 case 'z': /* z file */
347 greg 1.49 check(2,"s");
348 greg 1.20 zfile = argv[++i];
349     break;
350 greg 1.1 case 'r': /* recover file */
351 greg 2.16 if (argv[i][2] == 'o') { /* +output */
352     check(3,"s");
353     outfile = argv[i+1];
354     } else
355     check(2,"s");
356 greg 1.1 recover = argv[++i];
357     break;
358     case 't': /* timer */
359 greg 1.49 check(2,"i");
360 greg 1.1 ralrm = atoi(argv[++i]);
361     break;
362     #endif
363     case 'a': /* ambient */
364     switch (argv[i][2]) {
365     case 'v': /* value */
366 greg 1.49 check(3,"fff");
367 greg 1.1 setcolor(ambval, atof(argv[i+1]),
368     atof(argv[i+2]),
369     atof(argv[i+3]));
370     i += 3;
371     break;
372     case 'a': /* accuracy */
373 greg 1.49 check(3,"f");
374 greg 1.1 ambacc = atof(argv[++i]);
375     break;
376     case 'r': /* resolution */
377 greg 1.49 check(3,"i");
378 greg 1.1 ambres = atoi(argv[++i]);
379     break;
380     case 'd': /* divisions */
381 greg 1.49 check(3,"i");
382 greg 1.1 ambdiv = atoi(argv[++i]);
383     break;
384     case 's': /* super-samp */
385 greg 1.49 check(3,"i");
386 greg 1.1 ambssamp = atoi(argv[++i]);
387     break;
388     case 'b': /* bounces */
389 greg 1.49 check(3,"i");
390 greg 1.1 ambounce = atoi(argv[++i]);
391     break;
392     case 'i': /* include */
393 greg 2.5 case 'I':
394 greg 1.49 check(3,"s");
395 greg 1.1 if (ambincl != 1) {
396     ambincl = 1;
397     amblp = amblist;
398     }
399 greg 2.5 if (argv[i][2] == 'I') { /* file */
400 greg 2.13 rval = wordfile(amblp,
401 greg 2.33 getpath(argv[++i],getlibpath(),R_OK));
402 greg 2.5 if (rval < 0) {
403     sprintf(errmsg,
404     "cannot open ambient include file \"%s\"",
405     argv[i]);
406     error(SYSTEM, errmsg);
407     }
408     amblp += rval;
409 greg 2.25 } else {
410 greg 2.5 *amblp++ = argv[++i];
411 greg 2.25 *amblp = NULL;
412     }
413 greg 1.1 break;
414     case 'e': /* exclude */
415 greg 2.5 case 'E':
416 greg 1.49 check(3,"s");
417 greg 1.1 if (ambincl != 0) {
418     ambincl = 0;
419     amblp = amblist;
420     }
421 greg 2.5 if (argv[i][2] == 'E') { /* file */
422 greg 2.13 rval = wordfile(amblp,
423 greg 2.33 getpath(argv[++i],getlibpath(),R_OK));
424 greg 2.5 if (rval < 0) {
425     sprintf(errmsg,
426     "cannot open ambient exclude file \"%s\"",
427     argv[i]);
428     error(SYSTEM, errmsg);
429     }
430     amblp += rval;
431 greg 2.25 } else {
432 greg 2.5 *amblp++ = argv[++i];
433 greg 2.25 *amblp = NULL;
434     }
435 greg 1.1 break;
436     case 'f': /* file */
437 greg 1.49 check(3,"s");
438 greg 1.1 ambfile= argv[++i];
439     break;
440     default:
441 greg 1.10 goto badopt;
442 greg 1.1 }
443     break;
444     #if RTRACE
445 greg 1.36 case 'I': /* immed. irradiance */
446 greg 1.43 bool(2,imm_irrad);
447 greg 1.36 break;
448 greg 1.1 case 'f': /* format i/o */
449     switch (argv[i][2]) {
450     case 'a': /* ascii */
451     case 'f': /* float */
452     case 'd': /* double */
453     inform = argv[i][2];
454     break;
455     default:
456 greg 1.10 goto badopt;
457 greg 1.1 }
458     switch (argv[i][3]) {
459     case '\0':
460     outform = inform;
461     break;
462     case 'a': /* ascii */
463     case 'f': /* float */
464     case 'd': /* double */
465 greg 2.7 case 'c': /* color */
466 greg 1.49 check(4,"");
467 greg 1.1 outform = argv[i][3];
468     break;
469     default:
470 greg 1.10 goto badopt;
471 greg 1.1 }
472     break;
473     case 'o': /* output */
474     outvals = argv[i]+2;
475     break;
476 greg 1.44 case 'h': /* header output */
477     rval = loadflags & IO_INFO;
478     bool(2,rval);
479     loadflags = rval ? loadflags | IO_INFO :
480     loadflags & ~IO_INFO;
481 greg 1.1 break;
482 greg 2.25 case 't': /* trace */
483     switch (argv[i][2]) {
484     case 'i': /* include */
485     case 'I':
486     check(3,"s");
487     if (traincl != 1) {
488     traincl = 1;
489     tralp = tralist;
490     }
491     if (argv[i][2] == 'I') { /* file */
492     rval = wordfile(tralp,
493 greg 2.33 getpath(argv[++i],getlibpath(),R_OK));
494 greg 2.25 if (rval < 0) {
495     sprintf(errmsg,
496     "cannot open trace include file \"%s\"",
497     argv[i]);
498     error(SYSTEM, errmsg);
499     }
500     tralp += rval;
501     } else {
502     *tralp++ = argv[++i];
503     *tralp = NULL;
504     }
505     break;
506     case 'e': /* exclude */
507     case 'E':
508     check(3,"s");
509     if (traincl != 0) {
510     traincl = 0;
511     tralp = tralist;
512     }
513     if (argv[i][2] == 'E') { /* file */
514     rval = wordfile(tralp,
515 greg 2.33 getpath(argv[++i],getlibpath(),R_OK));
516 greg 2.25 if (rval < 0) {
517     sprintf(errmsg,
518     "cannot open trace exclude file \"%s\"",
519     argv[i]);
520     error(SYSTEM, errmsg);
521     }
522     tralp += rval;
523     } else {
524     *tralp++ = argv[++i];
525     *tralp = NULL;
526     }
527     break;
528     default:
529     goto badopt;
530     }
531     break;
532 greg 1.1 #endif
533     #if RVIEW
534     case 'b': /* black and white */
535 greg 1.49 bool(2,greyscale);
536 greg 1.1 break;
537     case 'o': /* output device */
538 greg 1.49 check(2,"s");
539 greg 1.1 devname = argv[++i];
540 greg 2.28 break;
541     case 'R': /* render input file */
542     check(2,"s");
543     strcpy(rifname, argv[++i]);
544 greg 1.1 break;
545     #endif
546 greg 2.18 #ifdef PERSIST
547     case 'P': /* persist file */
548     if (argv[i][2] == 'P') {
549     check(3,"s");
550 greg 2.27 persist = PARALLEL;
551 greg 2.18 } else {
552     check(2,"s");
553 greg 2.27 persist = PERSIST;
554 greg 2.18 }
555     persistfile(argv[++i]);
556     break;
557     #endif
558 greg 1.1 default:
559 greg 1.19 goto badopt;
560 greg 1.1 }
561     }
562     #if RPICT|RVIEW
563     err = setview(&ourview); /* set viewing parameters */
564     if (err != NULL)
565     error(USER, err);
566     #endif
567     /* set up signal handling */
568     sigdie(SIGINT, "Interrupt");
569     sigdie(SIGHUP, "Hangup");
570     sigdie(SIGTERM, "Terminate");
571     sigdie(SIGPIPE, "Broken pipe");
572 greg 1.45 sigdie(SIGALRM, "Alarm clock");
573 greg 2.10 #ifdef SIGXCPU
574 greg 1.1 sigdie(SIGXCPU, "CPU limit exceeded");
575     sigdie(SIGXFSZ, "File size exceeded");
576     #endif
577     /* open error file */
578     if (errfile != NULL) {
579     if (freopen(errfile, "a", stderr) == NULL)
580 greg 1.14 quit(2);
581 greg 1.1 fprintf(stderr, "**************\n*** PID %5d: ",
582     getpid());
583     printargs(argc, argv, stderr);
584 greg 2.12 putc('\n', stderr);
585 greg 1.1 fflush(stderr);
586     }
587 greg 2.10 #ifdef NICE
588 greg 1.1 nice(NICE); /* lower priority */
589     #endif
590 greg 1.19 /* get octree */
591 greg 1.1 #if RVIEW
592     loadflags &= ~IO_INFO;
593     #endif
594     if (i == argc)
595 greg 1.19 octname = NULL;
596     else if (i == argc-1)
597     octname = argv[i];
598 greg 1.1 else
599 greg 1.19 goto badopt;
600 greg 2.7 if (
601     #if RPICT
602     seqstart > 0 &&
603     #endif
604     octname == NULL)
605 greg 1.19 error(USER, "missing octree argument");
606 greg 2.26 /* set up output */
607 greg 2.18 #ifdef PERSIST
608     if (persist) {
609 greg 2.7 #if RPICT
610 greg 2.26 if (recover != NULL)
611     error(USER, "persist option used with recover file");
612 greg 2.18 if (seqstart <= 0)
613     error(USER, "persist option only for sequences");
614 greg 2.26 if (outfile == NULL)
615 greg 2.18 #endif
616     duped1 = dup(fileno(stdout)); /* don't lose our output */
617     openheader();
618     }
619     #if RPICT
620 greg 2.27 else
621     #endif
622     #endif
623     #if RPICT
624 greg 2.7 if (outfile != NULL)
625     openheader();
626 greg 1.1 #endif
627 greg 2.10 #ifdef MSDOS
628     #if RTRACE
629     if (outform != 'a')
630     #endif
631     setmode(fileno(stdout), O_BINARY);
632     if (octname == NULL)
633     setmode(fileno(stdin), O_BINARY);
634     #endif
635 greg 1.19 readoct(octname, loadflags, &thescene, NULL);
636 greg 2.9 nsceneobjs = nobjects;
637 greg 1.1
638     if (loadflags & IO_INFO) { /* print header */
639     printargs(i, argv, stdout);
640 greg 1.46 printf("SOFTWARE= %s\n", VersionID);
641 greg 2.8 #if RTRACE
642     fputformat(formstr(outform), stdout);
643     putchar('\n');
644     #endif
645 greg 1.1 }
646    
647     marksources(); /* find and mark sources */
648    
649 greg 1.24 setambient(ambfile); /* initialize ambient calculation */
650 greg 1.1
651 greg 2.18 #ifdef PERSIST
652     if (persist) {
653 greg 2.26 fflush(stdout);
654     if (outfile == NULL) { /* reconnect stdout */
655     dup2(duped1, fileno(stdout));
656     close(duped1);
657     }
658 greg 2.27 if (persist == PARALLEL) { /* multiprocessing */
659 greg 2.18 preload_objs(); /* preload scene */
660     while ((rval=fork()) == 0) { /* keep on forkin' */
661     pflock(1);
662     pfhold();
663 greg 2.32 tstart = time((time_t *)NULL);
664 greg 2.18 }
665     if (rval < 0)
666     error(SYSTEM, "cannot fork child for persist function");
667 greg 2.27 pfdetach(); /* parent exits */
668 greg 2.18 }
669     }
670     runagain:
671 greg 2.27 if (persist)
672     if (outfile == NULL) /* if out to stdout */
673     dupheader(); /* send header */
674     else /* if out to file */
675     duped1 = dup(fileno(stdout)); /* hang onto pipe */
676 greg 2.18 #endif
677 greg 1.1 #if RPICT
678 greg 2.7 rpict(seqstart, outfile, zfile, recover);
679 greg 1.1 #endif
680     #if RTRACE
681 greg 2.8 rtrace(NULL);
682 greg 1.1 #endif
683     #if RVIEW
684 greg 2.8 rview();
685 greg 2.18 #endif
686 greg 2.21 ambsync(); /* flush ambient file */
687 greg 2.18 #ifdef PERSIST
688 greg 2.27 if (persist == PERSIST) { /* first run-through */
689 greg 2.20 if ((rval=fork()) == 0) { /* child loops until killed */
690     pflock(1);
691 greg 2.27 persist = PCHILD;
692 greg 2.20 } else { /* original process exits */
693     if (rval < 0)
694     error(SYSTEM, "cannot fork child for persist function");
695 greg 2.27 pfdetach(); /* parent exits */
696 greg 2.20 }
697     }
698 greg 2.27 if (persist == PCHILD) { /* wait for a signal then go again */
699     if (outfile != NULL)
700     close(duped1); /* release output handle */
701 greg 2.20 pfhold();
702 greg 2.32 tstart = time((time_t *)NULL); /* reinitialize */
703 greg 2.22 raynum = nrays = 0;
704 greg 2.18 goto runagain;
705     }
706 greg 1.1 #endif
707     quit(0);
708 greg 1.19
709     badopt:
710     sprintf(errmsg, "command line error at '%s'", argv[i]);
711     error(USER, errmsg);
712    
713 greg 2.10 #undef check
714     #undef bool
715 greg 1.1 }
716    
717    
718     eputs(s) /* error output */
719     char *s;
720     {
721     if (errvec != NULL)
722     (*errvec)(s);
723     }
724    
725    
726     wputs(s) /* warning output */
727     char *s;
728     {
729 greg 2.3 int lasterrno = errno; /* save errno */
730    
731 greg 1.1 if (wrnvec != NULL)
732     (*wrnvec)(s);
733 greg 2.3
734     errno = lasterrno;
735 greg 1.1 }
736    
737    
738     cputs(s) /* command error output */
739     char *s;
740     {
741     if (cmdvec != NULL)
742     (*cmdvec)(s);
743     }
744    
745    
746     stderr_v(s) /* put string to stderr */
747     register char *s;
748     {
749 greg 1.26 static int midline = 0;
750 greg 1.1
751 greg 1.27 if (!*s)
752     return;
753 greg 1.26 if (!midline++) {
754 greg 1.1 fputs(progname, stderr);
755     fputs(": ", stderr);
756     }
757     fputs(s, stderr);
758 greg 1.27 if (s[strlen(s)-1] == '\n') {
759 greg 1.1 fflush(stderr);
760 greg 1.26 midline = 0;
761 greg 1.1 }
762     }
763    
764    
765     onsig(signo) /* fatal signal */
766     int signo;
767     {
768 greg 1.8 static int gotsig = 0;
769    
770     if (gotsig++) /* two signals and we're gone! */
771 greg 1.9 _exit(signo);
772 greg 1.8
773 greg 1.48 alarm(15); /* allow 15 seconds to clean up */
774     signal(SIGALRM, SIG_DFL); /* make certain we do die */
775 greg 1.1 eputs("signal - ");
776     eputs(sigerr[signo]);
777     eputs("\n");
778 greg 1.14 quit(3);
779 greg 1.1 }
780    
781    
782     sigdie(signo, msg) /* set fatal signal */
783     int signo;
784     char *msg;
785     {
786     if (signal(signo, onsig) == SIG_IGN)
787     signal(signo, SIG_IGN);
788     sigerr[signo] = msg;
789     }
790    
791    
792     printdefaults() /* print default values to stdout */
793     {
794     register char *cp;
795    
796 greg 1.43 #if RTRACE
797     if (imm_irrad)
798     printf("-I+\t\t\t\t# immediate irradiance on\n");
799     else
800     #endif
801     printf(do_irrad ? "-i+\t\t\t\t# irradiance calculation on\n" :
802     "-i-\t\t\t\t# irradiance calculation off\n");
803 greg 1.49 #if RVIEW
804     printf(greyscale ? "-b+\t\t\t\t# greyscale on\n" :
805     "-b-\t\t\t\t# greyscale off\n");
806     #endif
807 greg 1.1 #if RPICT|RVIEW
808 greg 1.7 printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
809 greg 1.1 ourview.type==VT_PER ? "perspective" :
810     ourview.type==VT_PAR ? "parallel" :
811 greg 1.28 ourview.type==VT_HEM ? "hemispherical" :
812     ourview.type==VT_ANG ? "angular" :
813 greg 1.1 "unknown");
814     printf("-vp %f %f %f\t# view point\n",
815     ourview.vp[0], ourview.vp[1], ourview.vp[2]);
816 greg 2.11 printf("-vd %f %f %f\t# view direction\n",
817 greg 1.1 ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
818 greg 2.11 printf("-vu %f %f %f\t# view up\n",
819 greg 1.1 ourview.vup[0], ourview.vup[1], ourview.vup[2]);
820     printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
821     printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
822 greg 2.34 printf("-vo %f\t\t\t# view fore clipping plane\n", ourview.vfore);
823     printf("-va %f\t\t\t# view aft clipping plane\n", ourview.vaft);
824 greg 1.22 printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
825     printf("-vl %f\t\t\t# view lift\n", ourview.voff);
826 greg 1.1 #endif
827 greg 1.22 #if RPICT|RTRACE
828 greg 1.1 printf("-x %-9d\t\t\t# x resolution\n", hresolu);
829     printf("-y %-9d\t\t\t# y resolution\n", vresolu);
830 greg 1.22 #endif
831     #if RPICT
832 greg 2.4 printf("-pa %f\t\t\t# pixel aspect ratio\n", pixaspect);
833     printf("-pj %f\t\t\t# pixel jitter\n", dstrpix);
834 greg 2.30 #endif
835     #if RVIEW
836     printf("-pe %f\t\t\t# pixel exposure\n", exposure);
837 greg 1.22 #endif
838 greg 1.1 #if RPICT|RVIEW
839 greg 2.4 printf("-ps %-9d\t\t\t# pixel sample\n", psample);
840     printf("-pt %f\t\t\t# pixel threshold\n", maxdiff);
841 greg 1.22 #endif
842 greg 1.29 printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
843     printf("-dc %f\t\t\t# direct certainty\n", shadcert);
844     printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
845 greg 1.47 printf("-ds %f\t\t\t# direct sampling\n", srcsizerat);
846 greg 1.39 printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
847 greg 1.40 printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
848 greg 2.17 printf(directvis ? "-dv+\t\t\t\t# direct visibility on\n" :
849     "-dv-\t\t\t\t# direct visibility off\n");
850 greg 2.4 printf("-sj %f\t\t\t# specular jitter\n", specjitter);
851     printf("-st %f\t\t\t# specular threshold\n", specthresh);
852 greg 1.1 printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
853     colval(ambval,GRN), colval(ambval, BLU));
854     printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
855     printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
856     printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
857     printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
858     printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
859     printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
860     printf("-lw %f\t\t\t# limit weight\n", minweight);
861     #if RPICT
862     printf("-t %-9d\t\t\t# time between reports\n", ralrm);
863     #endif
864     #if RVIEW
865     printf("-o %s\t\t\t\t# output device\n", devname);
866     #endif
867     #if RTRACE
868     printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
869 greg 2.7 inform, outform, formstr(inform), formstr(outform));
870 greg 1.1 printf("-o%s\t\t\t\t# output", outvals);
871     for (cp = outvals; *cp; cp++)
872     switch (*cp) {
873     case 't': printf(" trace"); break;
874     case 'o': printf(" origin"); break;
875     case 'd': printf(" direction"); break;
876     case 'v': printf(" value"); break;
877     case 'l': printf(" length"); break;
878 greg 2.14 case 'L': printf(" first_length"); break;
879 greg 1.1 case 'p': printf(" point"); break;
880     case 'n': printf(" normal"); break;
881 greg 2.14 case 'N': printf(" unperturbed_normal"); break;
882 greg 1.1 case 's': printf(" surface"); break;
883     case 'w': printf(" weight"); break;
884     case 'm': printf(" modifier"); break;
885     }
886 greg 2.7 putchar('\n');
887 greg 1.1 #endif
888 greg 1.43 printf(wrnvec != NULL ? "-w+\t\t\t\t# warning messages on\n" :
889     "-w-\t\t\t\t# warning messages off\n");
890 greg 1.1 }