1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: mkillum.c,v 2.24 2005/05/25 04:44:25 greg 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 "platform.h" |
12 |
#include "mkillum.h" |
13 |
#include "random.h" |
14 |
|
15 |
/* default parameters */ |
16 |
#define SAMPDENS 48 /* points per projected steradian */ |
17 |
#define NSAMPS 32 /* samples per point */ |
18 |
#define DFLMAT "illum_mat" /* material name */ |
19 |
#define DFLDAT "illum" /* data file name */ |
20 |
/* selection options */ |
21 |
#define S_NONE 0 /* select none */ |
22 |
#define S_ELEM 1 /* select specified element */ |
23 |
#define S_COMPL 2 /* select all but element */ |
24 |
#define S_ALL 3 /* select all */ |
25 |
|
26 |
/* rtrace command and defaults */ |
27 |
char *rtargv[64] = { "rtrace", "-dj", ".25", "-dr", "3", "-dv-", |
28 |
"-ab", "2", "-ad", "1024", "-as", "512", "-aa", ".1", }; |
29 |
int rtargc = 14; |
30 |
/* overriding rtrace options */ |
31 |
char *myrtopts[] = { "-I-", "-i-", "-ld-", "-ov", "-h-", |
32 |
"-fff", "-y", "0", NULL }; |
33 |
|
34 |
struct rtproc rt0; /* head of rtrace process list */ |
35 |
|
36 |
struct illum_args thisillum = { /* our illum and default values */ |
37 |
0, |
38 |
DFLMAT, |
39 |
DFLDAT, |
40 |
0, |
41 |
VOIDID, |
42 |
SAMPDENS, |
43 |
NSAMPS, |
44 |
0., |
45 |
}; |
46 |
|
47 |
char matcheck[MAXSTR]; /* current material to include or exclude */ |
48 |
int matselect = S_ALL; /* selection criterion */ |
49 |
|
50 |
FUN ofun[NUMOTYPE] = INIT_OTYPE; /* object types */ |
51 |
|
52 |
char persistfn[] = "pfXXXXXX"; /* persist file name */ |
53 |
|
54 |
int gargc; /* global argc */ |
55 |
char **gargv; /* global argv */ |
56 |
#define progname gargv[0] |
57 |
|
58 |
int doneheader = 0; /* printed header yet? */ |
59 |
#define checkhead() if (!doneheader++) printhead(gargc,gargv) |
60 |
|
61 |
int warnings = 1; /* print warnings? */ |
62 |
|
63 |
int done_rprocs(struct rtproc *rtp); |
64 |
void init(int np); |
65 |
void filter(register FILE *infp, char *name); |
66 |
void xoptions(char *s, char *nm); |
67 |
void printopts(void); |
68 |
void printhead(register int ac, register char **av); |
69 |
void xobject(FILE *fp, char *nm); |
70 |
|
71 |
|
72 |
int |
73 |
main( /* compute illum distributions using rtrace */ |
74 |
int argc, |
75 |
char *argv[] |
76 |
) |
77 |
{ |
78 |
int nprocs = 1; |
79 |
char *rtpath; |
80 |
FILE *fp; |
81 |
register int i; |
82 |
/* set global arguments */ |
83 |
gargv = argv; |
84 |
/* check for -n option */ |
85 |
if (!strcmp(argv[1], "-n")) { |
86 |
nprocs = atoi(argv[2]); |
87 |
if (nprocs <= 0) |
88 |
error(USER, "illegal number of processes"); |
89 |
i = 3; |
90 |
} else |
91 |
i = 1; |
92 |
/* set up rtrace command */ |
93 |
for ( ; i < argc; i++) { |
94 |
if (argv[i][0] == '<' && argv[i][1] == '\0') |
95 |
break; |
96 |
rtargv[rtargc++] = argv[i]; |
97 |
if (argv[i][0] == '-' && argv[i][1] == 'w') |
98 |
switch (argv[i][2]) { |
99 |
case '\0': |
100 |
warnings = !warnings; |
101 |
break; |
102 |
case '+': |
103 |
case 'T': case 't': |
104 |
case 'Y': case 'y': |
105 |
case '1': |
106 |
warnings = 1; |
107 |
break; |
108 |
case '-': |
109 |
case 'F': case 'f': |
110 |
case 'N': case 'n': |
111 |
case '0': |
112 |
warnings = 0; |
113 |
break; |
114 |
} |
115 |
} |
116 |
gargc = i; |
117 |
if (!strcmp(rtargv[--rtargc], "-defaults")) |
118 |
nprocs = 0; |
119 |
if (nprocs > 1) { /* add persist file if parallel invocation */ |
120 |
rtargv[rtargc++] = "-PP"; |
121 |
rtargv[rtargc++] = mktemp(persistfn); |
122 |
} |
123 |
/* add "mandatory" rtrace options */ |
124 |
for (i = 0; myrtopts[i] != NULL; i++) |
125 |
rtargv[rtargc++] = myrtopts[i]; |
126 |
/* finally, put back final argument */ |
127 |
rtargv[rtargc++] = argv[gargc-1]; |
128 |
rtargv[rtargc] = NULL; |
129 |
if (!nprocs) { /* just asking for defaults? */ |
130 |
printopts(); fflush(stdout); |
131 |
rtpath = getpath(rtargv[0], getenv("PATH"), X_OK); |
132 |
if (rtpath == NULL) { |
133 |
eputs(rtargv[0]); |
134 |
eputs(": command not found\n"); |
135 |
exit(1); |
136 |
} |
137 |
execv(rtpath, rtargv); |
138 |
perror(rtpath); /* execv() should not return */ |
139 |
exit(1); |
140 |
} |
141 |
if (gargc < 2 || argv[gargc-1][0] == '-') |
142 |
error(USER, "missing octree argument"); |
143 |
/* else initialize and run our calculation */ |
144 |
init(nprocs); |
145 |
if (gargc+1 < argc) |
146 |
for (i = gargc+1; i < argc; i++) { |
147 |
if ((fp = fopen(argv[i], "r")) == NULL) { |
148 |
sprintf(errmsg, |
149 |
"cannot open scene file \"%s\"", argv[i]); |
150 |
error(SYSTEM, errmsg); |
151 |
} |
152 |
filter(fp, argv[i]); |
153 |
fclose(fp); |
154 |
} |
155 |
else |
156 |
filter(stdin, "standard input"); |
157 |
quit(0); |
158 |
} |
159 |
|
160 |
static void |
161 |
killpersist(void) /* kill persistent rtrace process */ |
162 |
{ |
163 |
FILE *fp = fopen(persistfn, "r"); |
164 |
int pid; |
165 |
|
166 |
if (fp == NULL) |
167 |
return; |
168 |
if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0) |
169 |
unlink(persistfn); |
170 |
fclose(fp); |
171 |
} |
172 |
|
173 |
int |
174 |
done_rprocs(struct rtproc *rtp) |
175 |
{ |
176 |
int st0, st1 = 0; |
177 |
|
178 |
if (rtp->next != NULL) { /* close last opened first! */ |
179 |
st1 = done_rprocs(rtp->next); |
180 |
free((void *)rtp->next); |
181 |
rtp->next = NULL; |
182 |
} |
183 |
st0 = close_process(&rtp->pd); |
184 |
if (st0 < 0) |
185 |
error(WARNING, "unknown return status from rtrace process"); |
186 |
else if (st0 > 0) |
187 |
return(st0); |
188 |
return(st1); |
189 |
} |
190 |
|
191 |
void |
192 |
quit(int status) /* exit with status */ |
193 |
{ |
194 |
int rtstat; |
195 |
|
196 |
if (rt0.next != NULL) /* terminate persistent rtrace */ |
197 |
killpersist(); |
198 |
/* clean up rtrace process(es) */ |
199 |
rtstat = done_rprocs(&rt0); |
200 |
if (status == 0) |
201 |
status = rtstat; |
202 |
exit(status); |
203 |
} |
204 |
|
205 |
void |
206 |
init(int np) /* start rtrace and set up buffers */ |
207 |
{ |
208 |
struct rtproc *rtp; |
209 |
int i; |
210 |
int maxbytes; |
211 |
/* set up object functions */ |
212 |
ofun[OBJ_FACE].funp = o_face; |
213 |
ofun[OBJ_SPHERE].funp = o_sphere; |
214 |
ofun[OBJ_RING].funp = o_ring; |
215 |
/* set up signal handling */ |
216 |
signal(SIGINT, quit); |
217 |
#ifdef SIGHUP |
218 |
signal(SIGHUP, quit); |
219 |
#endif |
220 |
#ifdef SIGTERM |
221 |
signal(SIGTERM, quit); |
222 |
#endif |
223 |
#ifdef SIGPIPE |
224 |
signal(SIGPIPE, quit); |
225 |
#endif |
226 |
rtp = &rt0; /* start rtrace process(es) */ |
227 |
for (i = 0; i++ < np; ) { |
228 |
errno = 0; |
229 |
maxbytes = open_process(&rtp->pd, rtargv); |
230 |
if (maxbytes == 0) { |
231 |
eputs(rtargv[0]); |
232 |
eputs(": command not found\n"); |
233 |
exit(1); |
234 |
} |
235 |
if (maxbytes < 0) |
236 |
error(SYSTEM, "cannot start rtrace process"); |
237 |
rtp->bsiz = maxbytes/(6*sizeof(float)); |
238 |
rtp->buf = (float *)malloc(6*sizeof(float)*rtp->bsiz--); |
239 |
rtp->dest = (float **)calloc(rtp->bsiz, sizeof(float *)); |
240 |
if (rtp->buf == NULL || rtp->dest == NULL) |
241 |
error(SYSTEM, "out of memory in init"); |
242 |
rtp->nrays = 0; |
243 |
if (i == np) /* last process? */ |
244 |
break; |
245 |
if (np > 1) |
246 |
sleep(2); /* wait for persist file */ |
247 |
rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc)); |
248 |
if (rtp->next == NULL) |
249 |
error(SYSTEM, "out of memory in init"); |
250 |
rtp = rtp->next; |
251 |
} |
252 |
rtp->next = NULL; |
253 |
/* set up urand */ |
254 |
initurand(16384); |
255 |
} |
256 |
|
257 |
|
258 |
void |
259 |
eputs( /* put string to stderr */ |
260 |
register char *s |
261 |
) |
262 |
{ |
263 |
static int midline = 0; |
264 |
|
265 |
if (!*s) return; |
266 |
if (!midline) { |
267 |
fputs(progname, stderr); |
268 |
fputs(": ", stderr); |
269 |
} |
270 |
fputs(s, stderr); |
271 |
midline = s[strlen(s)-1] != '\n'; |
272 |
} |
273 |
|
274 |
|
275 |
void |
276 |
wputs(s) /* print warning if enabled */ |
277 |
char *s; |
278 |
{ |
279 |
if (warnings) |
280 |
eputs(s); |
281 |
} |
282 |
|
283 |
|
284 |
void |
285 |
filter( /* process stream */ |
286 |
register FILE *infp, |
287 |
char *name |
288 |
) |
289 |
{ |
290 |
char buf[512]; |
291 |
FILE *pfp; |
292 |
register int c; |
293 |
|
294 |
while ((c = getc(infp)) != EOF) { |
295 |
if (isspace(c)) |
296 |
continue; |
297 |
if (c == '#') { /* comment/options */ |
298 |
buf[0] = c; |
299 |
fgets(buf+1, sizeof(buf)-1, infp); |
300 |
xoptions(buf, name); |
301 |
} else if (c == '!') { /* command */ |
302 |
buf[0] = c; |
303 |
fgetline(buf+1, sizeof(buf)-1, infp); |
304 |
if ((pfp = popen(buf+1, "r")) == NULL) { |
305 |
sprintf(errmsg, "cannot execute \"%s\"", buf); |
306 |
error(SYSTEM, errmsg); |
307 |
} |
308 |
filter(pfp, buf); |
309 |
pclose(pfp); |
310 |
} else { /* object */ |
311 |
ungetc(c, infp); |
312 |
xobject(infp, name); |
313 |
} |
314 |
} |
315 |
} |
316 |
|
317 |
|
318 |
void |
319 |
xoptions( /* process options in string s */ |
320 |
char *s, |
321 |
char *nm |
322 |
) |
323 |
{ |
324 |
extern FILE *freopen(); |
325 |
char buf[64]; |
326 |
int nerrs = 0; |
327 |
register char *cp; |
328 |
|
329 |
if (strncmp(s, "#@mkillum", 9) || !isspace(s[9])) { |
330 |
fputs(s, stdout); /* not for us */ |
331 |
return; |
332 |
} |
333 |
cp = s+10; |
334 |
while (*cp) { |
335 |
switch (*cp) { |
336 |
case ' ': |
337 |
case '\t': |
338 |
case '\n': |
339 |
case '\r': |
340 |
case '\f': |
341 |
cp++; |
342 |
continue; |
343 |
case 'm': /* material name */ |
344 |
if (*++cp != '=') |
345 |
break; |
346 |
if (!*++cp || isspace(*cp)) |
347 |
break; |
348 |
atos(thisillum.matname, MAXSTR, cp); |
349 |
cp = sskip(cp); |
350 |
if (!(thisillum.flags & IL_DATCLB)) { |
351 |
strcpy(thisillum.datafile, thisillum.matname); |
352 |
thisillum.dfnum = 0; |
353 |
} |
354 |
continue; |
355 |
case 'f': /* data file name */ |
356 |
if (*++cp != '=') |
357 |
break; |
358 |
if (!*++cp || isspace(*cp)) { |
359 |
strcpy(thisillum.datafile,thisillum.matname); |
360 |
thisillum.dfnum = 0; |
361 |
thisillum.flags &= ~IL_DATCLB; |
362 |
continue; |
363 |
} |
364 |
atos(thisillum.datafile, MAXSTR, cp); |
365 |
cp = sskip(cp); |
366 |
thisillum.dfnum = 0; |
367 |
thisillum.flags |= IL_DATCLB; |
368 |
continue; |
369 |
case 'i': /* include material */ |
370 |
case 'e': /* exclude material */ |
371 |
if (cp[1] != '=') |
372 |
break; |
373 |
matselect = (*cp == 'i') ? S_ELEM : S_COMPL; |
374 |
cp += 2; |
375 |
atos(matcheck, MAXSTR, cp); |
376 |
cp = sskip(cp); |
377 |
continue; |
378 |
case 'a': /* use everything */ |
379 |
cp = sskip(cp); |
380 |
matselect = S_ALL; |
381 |
continue; |
382 |
case 'n': /* use nothing (passive) */ |
383 |
cp = sskip(cp); |
384 |
matselect = S_NONE; |
385 |
continue; |
386 |
case 'c': /* color calculation */ |
387 |
if (*++cp != '=') |
388 |
break; |
389 |
switch (*++cp) { |
390 |
case 'a': /* average */ |
391 |
thisillum.flags = (thisillum.flags|IL_COLAVG) |
392 |
& ~IL_COLDST; |
393 |
break; |
394 |
case 'd': /* distribution */ |
395 |
thisillum.flags |= (IL_COLDST|IL_COLAVG); |
396 |
break; |
397 |
case 'n': /* none */ |
398 |
thisillum.flags &= ~(IL_COLAVG|IL_COLDST); |
399 |
break; |
400 |
default: |
401 |
goto opterr; |
402 |
} |
403 |
cp = sskip(cp); |
404 |
continue; |
405 |
case 'd': /* point sample density */ |
406 |
if (*++cp != '=') |
407 |
break; |
408 |
if (!isintd(++cp, " \t\n\r")) |
409 |
break; |
410 |
thisillum.sampdens = atoi(cp); |
411 |
cp = sskip(cp); |
412 |
continue; |
413 |
case 's': /* point super-samples */ |
414 |
if (*++cp != '=') |
415 |
break; |
416 |
if (!isintd(++cp, " \t\n\r")) |
417 |
break; |
418 |
thisillum.nsamps = atoi(cp); |
419 |
cp = sskip(cp); |
420 |
continue; |
421 |
case 'l': /* light sources */ |
422 |
cp++; |
423 |
if (*cp == '+') |
424 |
thisillum.flags |= IL_LIGHT; |
425 |
else if (*cp == '-') |
426 |
thisillum.flags &= ~IL_LIGHT; |
427 |
else |
428 |
break; |
429 |
cp++; |
430 |
continue; |
431 |
case 'b': /* brightness */ |
432 |
if (*++cp != '=') |
433 |
break; |
434 |
if (!isfltd(++cp, " \t\n\r")) |
435 |
break; |
436 |
thisillum.minbrt = atof(cp); |
437 |
if (thisillum.minbrt < 0.) |
438 |
thisillum.minbrt = 0.; |
439 |
cp = sskip(cp); |
440 |
continue; |
441 |
case 'o': /* output file */ |
442 |
if (*++cp != '=') |
443 |
break; |
444 |
if (!*++cp || isspace(*cp)) |
445 |
break; |
446 |
atos(buf, sizeof(buf), cp); |
447 |
cp = sskip(cp); |
448 |
if (freopen(buf, "w", stdout) == NULL) { |
449 |
sprintf(errmsg, |
450 |
"cannot open output file \"%s\"", buf); |
451 |
error(SYSTEM, errmsg); |
452 |
} |
453 |
doneheader = 0; |
454 |
continue; |
455 |
case '!': /* processed file! */ |
456 |
sprintf(errmsg, "(%s): already processed!", nm); |
457 |
error(WARNING, errmsg); |
458 |
matselect = S_NONE; |
459 |
return; |
460 |
} |
461 |
opterr: /* skip faulty option */ |
462 |
while (*cp && !isspace(*cp)) |
463 |
cp++; |
464 |
nerrs++; |
465 |
} |
466 |
/* print header? */ |
467 |
checkhead(); |
468 |
/* issue warnings? */ |
469 |
if (nerrs) { |
470 |
sprintf(errmsg, "(%s): %d error(s) in option line:", |
471 |
nm, nerrs); |
472 |
error(WARNING, errmsg); |
473 |
wputs(s); |
474 |
printf("# %s: the following option line has %d error(s):\n", |
475 |
progname, nerrs); |
476 |
} |
477 |
/* print pure comment */ |
478 |
printf("# %s", s+2); |
479 |
} |
480 |
|
481 |
void |
482 |
printopts(void) /* print out option default values */ |
483 |
{ |
484 |
printf("m=%-15s\t\t# material name\n", thisillum.matname); |
485 |
printf("f=%-15s\t\t# data file name\n", thisillum.datafile); |
486 |
if (thisillum.flags & IL_COLAVG) |
487 |
if (thisillum.flags & IL_COLDST) |
488 |
printf("c=d\t\t\t\t# color distribution\n"); |
489 |
else |
490 |
printf("c=a\t\t\t\t# color average\n"); |
491 |
else |
492 |
printf("c=n\t\t\t\t# color none\n"); |
493 |
if (thisillum.flags & IL_LIGHT) |
494 |
printf("l+\t\t\t\t# light type on\n"); |
495 |
else |
496 |
printf("l-\t\t\t\t# light type off\n"); |
497 |
printf("d=%d\t\t\t\t# density of points\n", thisillum.sampdens); |
498 |
printf("s=%d\t\t\t\t# samples per point\n", thisillum.nsamps); |
499 |
printf("b=%f\t\t\t# minimum average brightness\n", thisillum.minbrt); |
500 |
} |
501 |
|
502 |
|
503 |
void |
504 |
printhead( /* print out header */ |
505 |
register int ac, |
506 |
register char **av |
507 |
) |
508 |
{ |
509 |
putchar('#'); |
510 |
while (ac-- > 0) { |
511 |
putchar(' '); |
512 |
fputs(*av++, stdout); |
513 |
} |
514 |
fputs("\n#@mkillum !\n", stdout); |
515 |
} |
516 |
|
517 |
|
518 |
void |
519 |
xobject( /* translate an object from fp */ |
520 |
FILE *fp, |
521 |
char *nm |
522 |
) |
523 |
{ |
524 |
OBJREC thisobj; |
525 |
char str[MAXSTR]; |
526 |
int doit; |
527 |
/* read the object */ |
528 |
if (fgetword(thisillum.altmat, MAXSTR, fp) == NULL) |
529 |
goto readerr; |
530 |
if (fgetword(str, MAXSTR, fp) == NULL) |
531 |
goto readerr; |
532 |
/* is it an alias? */ |
533 |
if (!strcmp(str, ALIASKEY)) { |
534 |
if (fgetword(str, MAXSTR, fp) == NULL) |
535 |
goto readerr; |
536 |
printf("\n%s %s %s", thisillum.altmat, ALIASKEY, str); |
537 |
if (fgetword(str, MAXSTR, fp) == NULL) |
538 |
goto readerr; |
539 |
printf("\t%s\n", str); |
540 |
return; |
541 |
} |
542 |
thisobj.omod = OVOID; /* unused field */ |
543 |
if ((thisobj.otype = otype(str)) < 0) { |
544 |
sprintf(errmsg, "(%s): unknown type \"%s\"", nm, str); |
545 |
error(USER, errmsg); |
546 |
} |
547 |
if (fgetword(str, MAXSTR, fp) == NULL) |
548 |
goto readerr; |
549 |
thisobj.oname = str; |
550 |
if (readfargs(&thisobj.oargs, fp) != 1) |
551 |
goto readerr; |
552 |
thisobj.os = NULL; |
553 |
/* check for translation */ |
554 |
switch (matselect) { |
555 |
case S_NONE: |
556 |
doit = 0; |
557 |
break; |
558 |
case S_ALL: |
559 |
doit = 1; |
560 |
break; |
561 |
case S_ELEM: |
562 |
doit = !strcmp(thisillum.altmat, matcheck); |
563 |
break; |
564 |
case S_COMPL: |
565 |
doit = strcmp(thisillum.altmat, matcheck); |
566 |
break; |
567 |
} |
568 |
doit = doit && issurface(thisobj.otype); |
569 |
/* print header? */ |
570 |
checkhead(); |
571 |
/* process object */ |
572 |
if (doit) |
573 |
(*ofun[thisobj.otype].funp)(&thisobj, &thisillum, &rt0, nm); |
574 |
else |
575 |
printobj(thisillum.altmat, &thisobj); |
576 |
/* free arguments */ |
577 |
freefargs(&thisobj.oargs); |
578 |
return; |
579 |
readerr: |
580 |
sprintf(errmsg, "(%s): error reading scene", nm); |
581 |
error(USER, errmsg); |
582 |
} |