1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: mkillum.c,v 2.20 2004/09/17 21:43:50 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 |
void init(int np); |
64 |
void filter(register FILE *infp, char *name); |
65 |
void xoptions(char *s, char *nm); |
66 |
void printopts(void); |
67 |
void printhead(register int ac, register char **av); |
68 |
void xobject(FILE *fp, char *nm); |
69 |
|
70 |
|
71 |
int |
72 |
main( /* compute illum distributions using rtrace */ |
73 |
int argc, |
74 |
char *argv[] |
75 |
) |
76 |
{ |
77 |
int nprocs = 1; |
78 |
char *rtpath; |
79 |
FILE *fp; |
80 |
register int i; |
81 |
/* set global arguments */ |
82 |
gargv = argv; |
83 |
/* check for -n option */ |
84 |
if (!strcmp(argv[1], "-n")) { |
85 |
nprocs = atoi(argv[2]); |
86 |
if (nprocs <= 0) |
87 |
error(USER, "illegal number of processes"); |
88 |
i = 3; |
89 |
} else |
90 |
i = 1; |
91 |
/* set up rtrace command */ |
92 |
for ( ; i < argc; i++) { |
93 |
if (argv[i][0] == '<' && argv[i][1] == '\0') |
94 |
break; |
95 |
rtargv[rtargc++] = argv[i]; |
96 |
if (argv[i][0] == '-' && argv[i][1] == 'w') |
97 |
switch (argv[i][2]) { |
98 |
case '\0': |
99 |
warnings = !warnings; |
100 |
break; |
101 |
case '+': |
102 |
case 'T': case 't': |
103 |
case 'Y': case 'y': |
104 |
case '1': |
105 |
warnings = 1; |
106 |
break; |
107 |
case '-': |
108 |
case 'F': case 'f': |
109 |
case 'N': case 'n': |
110 |
case '0': |
111 |
warnings = 0; |
112 |
break; |
113 |
} |
114 |
} |
115 |
gargc = i; |
116 |
if (!strcmp(rtargv[--rtargc], "-defaults")) |
117 |
nprocs = 0; |
118 |
if (nprocs > 1) { /* add persist file if parallel invocation */ |
119 |
rtargv[rtargc++] = "-PP"; |
120 |
rtargv[rtargc++] = mktemp(persistfn); |
121 |
} |
122 |
/* add "mandatory" rtrace options */ |
123 |
for (i = 0; myrtopts[i] != NULL; i++) |
124 |
rtargv[rtargc++] = myrtopts[i]; |
125 |
/* finally, put back final argument */ |
126 |
rtargv[rtargc++] = argv[gargc-1]; |
127 |
rtargv[rtargc] = NULL; |
128 |
if (!nprocs) { /* just asking for defaults? */ |
129 |
printopts(); fflush(stdout); |
130 |
rtpath = getpath(rtargv[0], getenv("PATH"), X_OK); |
131 |
if (rtpath == NULL) { |
132 |
eputs(rtargv[0]); |
133 |
eputs(": command not found\n"); |
134 |
exit(1); |
135 |
} |
136 |
execv(rtpath, rtargv); |
137 |
perror(rtpath); /* execv() should not return */ |
138 |
exit(1); |
139 |
} |
140 |
if (gargc < 2 || argv[gargc-1][0] == '-') |
141 |
error(USER, "missing octree argument"); |
142 |
/* else initialize and run our calculation */ |
143 |
init(nprocs); |
144 |
if (gargc+1 < argc) |
145 |
for (i = gargc+1; i < argc; i++) { |
146 |
if ((fp = fopen(argv[i], "r")) == NULL) { |
147 |
sprintf(errmsg, |
148 |
"cannot open scene file \"%s\"", argv[i]); |
149 |
error(SYSTEM, errmsg); |
150 |
} |
151 |
filter(fp, argv[i]); |
152 |
fclose(fp); |
153 |
} |
154 |
else |
155 |
filter(stdin, "standard input"); |
156 |
quit(0); |
157 |
} |
158 |
|
159 |
static void |
160 |
killpersist(void) /* kill persistent rtrace process */ |
161 |
{ |
162 |
FILE *fp = fopen(persistfn, "r"); |
163 |
int pid; |
164 |
|
165 |
if (fp == NULL) |
166 |
return; |
167 |
if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0) |
168 |
unlink(persistfn); |
169 |
fclose(fp); |
170 |
} |
171 |
|
172 |
void |
173 |
quit(int status) /* exit with status */ |
174 |
{ |
175 |
struct rtproc *rtp; |
176 |
int rtstat; |
177 |
|
178 |
if (rt0.next != NULL) /* terminate persistent rtrace */ |
179 |
killpersist(); |
180 |
/* clean up rtrace process(es) */ |
181 |
for (rtp = &rt0; rtp != NULL; rtp = rtp->next) { |
182 |
rtstat = close_process(&rtp->pd); |
183 |
if (status == 0) { |
184 |
if (rtstat < 0) |
185 |
error(WARNING, |
186 |
"unknown return status from rtrace process"); |
187 |
else |
188 |
status = rtstat; |
189 |
} |
190 |
} |
191 |
exit(status); |
192 |
} |
193 |
|
194 |
void |
195 |
init(int np) /* start rtrace and set up buffers */ |
196 |
{ |
197 |
struct rtproc *rtp; |
198 |
int i; |
199 |
int maxbytes; |
200 |
/* set up object functions */ |
201 |
ofun[OBJ_FACE].funp = o_face; |
202 |
ofun[OBJ_SPHERE].funp = o_sphere; |
203 |
ofun[OBJ_RING].funp = o_ring; |
204 |
/* set up signal handling */ |
205 |
#ifdef SIGPIPE /* not present on Windows */ |
206 |
signal(SIGPIPE, quit); |
207 |
#endif |
208 |
rtp = &rt0; /* start rtrace process(es) */ |
209 |
for (i = 0; i++ < np; ) { |
210 |
errno = 0; |
211 |
maxbytes = open_process(&rtp->pd, rtargv); |
212 |
if (maxbytes == 0) { |
213 |
eputs(rtargv[0]); |
214 |
eputs(": command not found\n"); |
215 |
exit(1); |
216 |
} |
217 |
if (maxbytes < 0) |
218 |
error(SYSTEM, "cannot start rtrace process"); |
219 |
if (!i && np > 1) |
220 |
sleep(2); /* wait for persist file */ |
221 |
rtp->bsiz = maxbytes/(6*sizeof(float)); |
222 |
rtp->buf = (float *)malloc(6*sizeof(float)*rtp->bsiz--); |
223 |
rtp->dest = (float **)calloc(rtp->bsiz, sizeof(float *)); |
224 |
if (rtp->buf == NULL || rtp->dest == NULL) |
225 |
error(SYSTEM, "out of memory in init"); |
226 |
rtp->nrays = 0; |
227 |
if (i == np) /* last process? */ |
228 |
break; |
229 |
rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc)); |
230 |
if (rtp->next == NULL) |
231 |
error(SYSTEM, "out of memory in init"); |
232 |
rtp = rtp->next; |
233 |
} |
234 |
rtp->next = NULL; |
235 |
/* set up urand */ |
236 |
initurand(16384); |
237 |
} |
238 |
|
239 |
|
240 |
void |
241 |
eputs( /* put string to stderr */ |
242 |
register char *s |
243 |
) |
244 |
{ |
245 |
static int midline = 0; |
246 |
|
247 |
if (!*s) return; |
248 |
if (!midline) { |
249 |
fputs(progname, stderr); |
250 |
fputs(": ", stderr); |
251 |
} |
252 |
fputs(s, stderr); |
253 |
midline = s[strlen(s)-1] != '\n'; |
254 |
} |
255 |
|
256 |
|
257 |
void |
258 |
wputs(s) /* print warning if enabled */ |
259 |
char *s; |
260 |
{ |
261 |
if (warnings) |
262 |
eputs(s); |
263 |
} |
264 |
|
265 |
|
266 |
void |
267 |
filter( /* process stream */ |
268 |
register FILE *infp, |
269 |
char *name |
270 |
) |
271 |
{ |
272 |
char buf[512]; |
273 |
FILE *pfp; |
274 |
register int c; |
275 |
|
276 |
while ((c = getc(infp)) != EOF) { |
277 |
if (isspace(c)) |
278 |
continue; |
279 |
if (c == '#') { /* comment/options */ |
280 |
buf[0] = c; |
281 |
fgets(buf+1, sizeof(buf)-1, infp); |
282 |
xoptions(buf, name); |
283 |
} else if (c == '!') { /* command */ |
284 |
buf[0] = c; |
285 |
fgetline(buf+1, sizeof(buf)-1, infp); |
286 |
if ((pfp = popen(buf+1, "r")) == NULL) { |
287 |
sprintf(errmsg, "cannot execute \"%s\"", buf); |
288 |
error(SYSTEM, errmsg); |
289 |
} |
290 |
filter(pfp, buf); |
291 |
pclose(pfp); |
292 |
} else { /* object */ |
293 |
ungetc(c, infp); |
294 |
xobject(infp, name); |
295 |
} |
296 |
} |
297 |
} |
298 |
|
299 |
|
300 |
void |
301 |
xoptions( /* process options in string s */ |
302 |
char *s, |
303 |
char *nm |
304 |
) |
305 |
{ |
306 |
extern FILE *freopen(); |
307 |
char buf[64]; |
308 |
int nerrs = 0; |
309 |
register char *cp; |
310 |
|
311 |
if (strncmp(s, "#@mkillum", 9) || !isspace(s[9])) { |
312 |
fputs(s, stdout); /* not for us */ |
313 |
return; |
314 |
} |
315 |
cp = s+10; |
316 |
while (*cp) { |
317 |
switch (*cp) { |
318 |
case ' ': |
319 |
case '\t': |
320 |
case '\n': |
321 |
case '\r': |
322 |
case '\f': |
323 |
cp++; |
324 |
continue; |
325 |
case 'm': /* material name */ |
326 |
if (*++cp != '=') |
327 |
break; |
328 |
if (!*++cp || isspace(*cp)) |
329 |
break; |
330 |
atos(thisillum.matname, MAXSTR, cp); |
331 |
cp = sskip(cp); |
332 |
if (!(thisillum.flags & IL_DATCLB)) { |
333 |
strcpy(thisillum.datafile, thisillum.matname); |
334 |
thisillum.dfnum = 0; |
335 |
} |
336 |
continue; |
337 |
case 'f': /* data file name */ |
338 |
if (*++cp != '=') |
339 |
break; |
340 |
if (!*++cp || isspace(*cp)) { |
341 |
strcpy(thisillum.datafile,thisillum.matname); |
342 |
thisillum.dfnum = 0; |
343 |
thisillum.flags &= ~IL_DATCLB; |
344 |
continue; |
345 |
} |
346 |
atos(thisillum.datafile, MAXSTR, cp); |
347 |
cp = sskip(cp); |
348 |
thisillum.dfnum = 0; |
349 |
thisillum.flags |= IL_DATCLB; |
350 |
continue; |
351 |
case 'i': /* include material */ |
352 |
case 'e': /* exclude material */ |
353 |
if (cp[1] != '=') |
354 |
break; |
355 |
matselect = (*cp == 'i') ? S_ELEM : S_COMPL; |
356 |
cp += 2; |
357 |
atos(matcheck, MAXSTR, cp); |
358 |
cp = sskip(cp); |
359 |
continue; |
360 |
case 'a': /* use everything */ |
361 |
cp = sskip(cp); |
362 |
matselect = S_ALL; |
363 |
continue; |
364 |
case 'n': /* use nothing (passive) */ |
365 |
cp = sskip(cp); |
366 |
matselect = S_NONE; |
367 |
continue; |
368 |
case 'c': /* color calculation */ |
369 |
if (*++cp != '=') |
370 |
break; |
371 |
switch (*++cp) { |
372 |
case 'a': /* average */ |
373 |
thisillum.flags = (thisillum.flags|IL_COLAVG) |
374 |
& ~IL_COLDST; |
375 |
break; |
376 |
case 'd': /* distribution */ |
377 |
thisillum.flags |= (IL_COLDST|IL_COLAVG); |
378 |
break; |
379 |
case 'n': /* none */ |
380 |
thisillum.flags &= ~(IL_COLAVG|IL_COLDST); |
381 |
break; |
382 |
default: |
383 |
goto opterr; |
384 |
} |
385 |
cp = sskip(cp); |
386 |
continue; |
387 |
case 'd': /* point sample density */ |
388 |
if (*++cp != '=') |
389 |
break; |
390 |
if (!isintd(++cp, " \t\n\r")) |
391 |
break; |
392 |
thisillum.sampdens = atoi(cp); |
393 |
cp = sskip(cp); |
394 |
continue; |
395 |
case 's': /* point super-samples */ |
396 |
if (*++cp != '=') |
397 |
break; |
398 |
if (!isintd(++cp, " \t\n\r")) |
399 |
break; |
400 |
thisillum.nsamps = atoi(cp); |
401 |
cp = sskip(cp); |
402 |
continue; |
403 |
case 'l': /* light sources */ |
404 |
cp++; |
405 |
if (*cp == '+') |
406 |
thisillum.flags |= IL_LIGHT; |
407 |
else if (*cp == '-') |
408 |
thisillum.flags &= ~IL_LIGHT; |
409 |
else |
410 |
break; |
411 |
cp++; |
412 |
continue; |
413 |
case 'b': /* brightness */ |
414 |
if (*++cp != '=') |
415 |
break; |
416 |
if (!isfltd(++cp, " \t\n\r")) |
417 |
break; |
418 |
thisillum.minbrt = atof(cp); |
419 |
if (thisillum.minbrt < 0.) |
420 |
thisillum.minbrt = 0.; |
421 |
cp = sskip(cp); |
422 |
continue; |
423 |
case 'o': /* output file */ |
424 |
if (*++cp != '=') |
425 |
break; |
426 |
if (!*++cp || isspace(*cp)) |
427 |
break; |
428 |
atos(buf, sizeof(buf), cp); |
429 |
cp = sskip(cp); |
430 |
if (freopen(buf, "w", stdout) == NULL) { |
431 |
sprintf(errmsg, |
432 |
"cannot open output file \"%s\"", buf); |
433 |
error(SYSTEM, errmsg); |
434 |
} |
435 |
doneheader = 0; |
436 |
continue; |
437 |
case '!': /* processed file! */ |
438 |
sprintf(errmsg, "(%s): already processed!", nm); |
439 |
error(WARNING, errmsg); |
440 |
matselect = S_NONE; |
441 |
return; |
442 |
} |
443 |
opterr: /* skip faulty option */ |
444 |
while (*cp && !isspace(*cp)) |
445 |
cp++; |
446 |
nerrs++; |
447 |
} |
448 |
/* print header? */ |
449 |
checkhead(); |
450 |
/* issue warnings? */ |
451 |
if (nerrs) { |
452 |
sprintf(errmsg, "(%s): %d error(s) in option line:", |
453 |
nm, nerrs); |
454 |
error(WARNING, errmsg); |
455 |
wputs(s); |
456 |
printf("# %s: the following option line has %d error(s):\n", |
457 |
progname, nerrs); |
458 |
} |
459 |
/* print pure comment */ |
460 |
printf("# %s", s+2); |
461 |
} |
462 |
|
463 |
void |
464 |
printopts(void) /* print out option default values */ |
465 |
{ |
466 |
printf("m=%-15s\t\t# material name\n", thisillum.matname); |
467 |
printf("f=%-15s\t\t# data file name\n", thisillum.datafile); |
468 |
if (thisillum.flags & IL_COLAVG) |
469 |
if (thisillum.flags & IL_COLDST) |
470 |
printf("c=d\t\t\t\t# color distribution\n"); |
471 |
else |
472 |
printf("c=a\t\t\t\t# color average\n"); |
473 |
else |
474 |
printf("c=n\t\t\t\t# color none\n"); |
475 |
if (thisillum.flags & IL_LIGHT) |
476 |
printf("l+\t\t\t\t# light type on\n"); |
477 |
else |
478 |
printf("l-\t\t\t\t# light type off\n"); |
479 |
printf("d=%d\t\t\t\t# density of points\n", thisillum.sampdens); |
480 |
printf("s=%d\t\t\t\t# samples per point\n", thisillum.nsamps); |
481 |
printf("b=%f\t\t\t# minimum average brightness\n", thisillum.minbrt); |
482 |
} |
483 |
|
484 |
|
485 |
void |
486 |
printhead( /* print out header */ |
487 |
register int ac, |
488 |
register char **av |
489 |
) |
490 |
{ |
491 |
putchar('#'); |
492 |
while (ac-- > 0) { |
493 |
putchar(' '); |
494 |
fputs(*av++, stdout); |
495 |
} |
496 |
fputs("\n#@mkillum !\n", stdout); |
497 |
} |
498 |
|
499 |
|
500 |
void |
501 |
xobject( /* translate an object from fp */ |
502 |
FILE *fp, |
503 |
char *nm |
504 |
) |
505 |
{ |
506 |
OBJREC thisobj; |
507 |
char str[MAXSTR]; |
508 |
int doit; |
509 |
/* read the object */ |
510 |
if (fgetword(thisillum.altmat, MAXSTR, fp) == NULL) |
511 |
goto readerr; |
512 |
if (fgetword(str, MAXSTR, fp) == NULL) |
513 |
goto readerr; |
514 |
/* is it an alias? */ |
515 |
if (!strcmp(str, ALIASKEY)) { |
516 |
if (fgetword(str, MAXSTR, fp) == NULL) |
517 |
goto readerr; |
518 |
printf("\n%s %s %s", thisillum.altmat, ALIASKEY, str); |
519 |
if (fgetword(str, MAXSTR, fp) == NULL) |
520 |
goto readerr; |
521 |
printf("\t%s\n", str); |
522 |
return; |
523 |
} |
524 |
thisobj.omod = OVOID; /* unused field */ |
525 |
if ((thisobj.otype = otype(str)) < 0) { |
526 |
sprintf(errmsg, "(%s): unknown type \"%s\"", nm, str); |
527 |
error(USER, errmsg); |
528 |
} |
529 |
if (fgetword(str, MAXSTR, fp) == NULL) |
530 |
goto readerr; |
531 |
thisobj.oname = str; |
532 |
if (readfargs(&thisobj.oargs, fp) != 1) |
533 |
goto readerr; |
534 |
thisobj.os = NULL; |
535 |
/* check for translation */ |
536 |
switch (matselect) { |
537 |
case S_NONE: |
538 |
doit = 0; |
539 |
break; |
540 |
case S_ALL: |
541 |
doit = 1; |
542 |
break; |
543 |
case S_ELEM: |
544 |
doit = !strcmp(thisillum.altmat, matcheck); |
545 |
break; |
546 |
case S_COMPL: |
547 |
doit = strcmp(thisillum.altmat, matcheck); |
548 |
break; |
549 |
} |
550 |
doit = doit && issurface(thisobj.otype); |
551 |
/* print header? */ |
552 |
checkhead(); |
553 |
/* process object */ |
554 |
if (doit) |
555 |
(*ofun[thisobj.otype].funp)(&thisobj, &thisillum, &rt0, nm); |
556 |
else |
557 |
printobj(thisillum.altmat, &thisobj); |
558 |
/* free arguments */ |
559 |
freefargs(&thisobj.oargs); |
560 |
return; |
561 |
readerr: |
562 |
sprintf(errmsg, "(%s): error reading scene", nm); |
563 |
error(USER, errmsg); |
564 |
} |