1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: mkillum.c,v 2.30 2007/09/18 19:51:07 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 |
struct illum_args thisillum = { /* our illum and default values */ |
27 |
0, |
28 |
UDzpos, |
29 |
0., |
30 |
DFLMAT, |
31 |
DFLDAT, |
32 |
0, |
33 |
VOIDID, |
34 |
SAMPDENS, |
35 |
NSAMPS, |
36 |
NULL, |
37 |
0., |
38 |
}; |
39 |
|
40 |
char matcheck[MAXSTR]; /* current material to include or exclude */ |
41 |
int matselect = S_ALL; /* selection criterion */ |
42 |
|
43 |
int gargc; /* global argc */ |
44 |
char **gargv; /* global argv */ |
45 |
|
46 |
int doneheader = 0; /* printed header yet? */ |
47 |
#define checkhead() if (!doneheader++) printhead(gargc,gargv) |
48 |
|
49 |
int warnings = 1; /* print warnings? */ |
50 |
|
51 |
void init(char *octnm, int np); |
52 |
void filter(register FILE *infp, char *name); |
53 |
void xoptions(char *s, char *nm); |
54 |
void printopts(void); |
55 |
void printhead(register int ac, register char **av); |
56 |
void xobject(FILE *fp, char *nm); |
57 |
|
58 |
|
59 |
int |
60 |
main( /* compute illum distributions using rtrace */ |
61 |
int argc, |
62 |
char *argv[] |
63 |
) |
64 |
{ |
65 |
int nprocs = 1; |
66 |
FILE *fp; |
67 |
int rval; |
68 |
register int i; |
69 |
/* set global arguments */ |
70 |
gargv = argv; |
71 |
progname = gargv[0]; |
72 |
/* set up rendering defaults */ |
73 |
dstrsrc = 0.25; |
74 |
directrelay = 3; |
75 |
directvis = 0; |
76 |
ambounce = 2; |
77 |
/* get options from command line */ |
78 |
for (i = 1; i < argc; i++) { |
79 |
while ((rval = expandarg(&argc, &argv, i)) > 0) |
80 |
; |
81 |
if (rval < 0) { |
82 |
sprintf(errmsg, "cannot expand '%s'", argv[i]); |
83 |
error(SYSTEM, errmsg); |
84 |
} |
85 |
if (argv[i][0] != '-') |
86 |
break; |
87 |
if (!strcmp(argv[i], "-w")) { |
88 |
warnings = 0; |
89 |
continue; |
90 |
} |
91 |
if (!strcmp(argv[i], "-n")) { |
92 |
nprocs = atoi(argv[++i]); |
93 |
if (nprocs <= 0) |
94 |
error(USER, "illegal number of processes"); |
95 |
continue; |
96 |
} |
97 |
if (!strcmp(argv[i], "-defaults")) { |
98 |
printopts(); |
99 |
print_rdefaults(); |
100 |
quit(0); |
101 |
} |
102 |
rval = getrenderopt(argc-i, argv+i); |
103 |
if (rval < 0) { |
104 |
sprintf(errmsg, "bad render option at '%s'", argv[i]); |
105 |
error(USER, errmsg); |
106 |
} |
107 |
i += rval; |
108 |
} |
109 |
gargc = ++i; |
110 |
/* add "mandatory" render options */ |
111 |
do_irrad = 0; |
112 |
if (gargc > argc || argv[gargc-1][0] == '-') |
113 |
error(USER, "missing octree argument"); |
114 |
/* else initialize and run our calculation */ |
115 |
init(argv[gargc-1], nprocs); |
116 |
if (gargc < argc) { |
117 |
if (gargc == argc-1 || argv[gargc][0] != '<' || argv[gargc][1]) |
118 |
error(USER, "use '< file1 file2 ..' for multiple inputs"); |
119 |
for (i = gargc+1; i < argc; i++) { |
120 |
if ((fp = fopen(argv[i], "r")) == NULL) { |
121 |
sprintf(errmsg, |
122 |
"cannot open scene file \"%s\"", argv[i]); |
123 |
error(SYSTEM, errmsg); |
124 |
} |
125 |
filter(fp, argv[i]); |
126 |
fclose(fp); |
127 |
} |
128 |
} else |
129 |
filter(stdin, "standard input"); |
130 |
quit(0); |
131 |
return 0; /* pro forma return */ |
132 |
} |
133 |
|
134 |
|
135 |
void |
136 |
init(char *octnm, int np) /* start rendering process(es) */ |
137 |
{ |
138 |
/* set up signal handling */ |
139 |
signal(SIGINT, quit); |
140 |
#ifdef SIGHUP |
141 |
signal(SIGHUP, quit); |
142 |
#endif |
143 |
#ifdef SIGTERM |
144 |
signal(SIGTERM, quit); |
145 |
#endif |
146 |
#ifdef SIGPIPE |
147 |
signal(SIGPIPE, quit); |
148 |
#endif |
149 |
/* start rendering process(es) */ |
150 |
ray_pinit(octnm, np); |
151 |
} |
152 |
|
153 |
|
154 |
void |
155 |
eputs( /* put string to stderr */ |
156 |
register char *s |
157 |
) |
158 |
{ |
159 |
static int midline = 0; |
160 |
|
161 |
if (!*s) return; |
162 |
if (!midline) { |
163 |
fputs(progname, stderr); |
164 |
fputs(": ", stderr); |
165 |
} |
166 |
fputs(s, stderr); |
167 |
midline = s[strlen(s)-1] != '\n'; |
168 |
} |
169 |
|
170 |
|
171 |
void |
172 |
wputs(s) /* print warning if enabled */ |
173 |
char *s; |
174 |
{ |
175 |
if (warnings) |
176 |
eputs(s); |
177 |
} |
178 |
|
179 |
|
180 |
void |
181 |
filter( /* process stream */ |
182 |
register FILE *infp, |
183 |
char *name |
184 |
) |
185 |
{ |
186 |
char buf[512]; |
187 |
FILE *pfp; |
188 |
register int c; |
189 |
|
190 |
while ((c = getc(infp)) != EOF) { |
191 |
if (isspace(c)) |
192 |
continue; |
193 |
if (c == '#') { /* comment/options */ |
194 |
buf[0] = c; |
195 |
fgets(buf+1, sizeof(buf)-1, infp); |
196 |
xoptions(buf, name); |
197 |
} else if (c == '!') { /* command */ |
198 |
buf[0] = c; |
199 |
fgetline(buf+1, sizeof(buf)-1, infp); |
200 |
if ((pfp = popen(buf+1, "r")) == NULL) { |
201 |
sprintf(errmsg, "cannot execute \"%s\"", buf); |
202 |
error(SYSTEM, errmsg); |
203 |
} |
204 |
filter(pfp, buf); |
205 |
pclose(pfp); |
206 |
} else { /* object */ |
207 |
ungetc(c, infp); |
208 |
xobject(infp, name); |
209 |
} |
210 |
} |
211 |
} |
212 |
|
213 |
|
214 |
void |
215 |
xoptions( /* process options in string s */ |
216 |
char *s, |
217 |
char *nm |
218 |
) |
219 |
{ |
220 |
extern FILE *freopen(); |
221 |
char buf[64]; |
222 |
int negax; |
223 |
int nerrs = 0; |
224 |
register char *cp; |
225 |
|
226 |
if (strncmp(s, "#@mkillum", 9) || !isspace(s[9])) { |
227 |
fputs(s, stdout); /* not for us */ |
228 |
return; |
229 |
} |
230 |
cp = s+10; |
231 |
while (*cp) { |
232 |
switch (*cp) { |
233 |
case ' ': |
234 |
case '\t': |
235 |
case '\n': |
236 |
case '\r': |
237 |
case '\f': |
238 |
cp++; |
239 |
continue; |
240 |
case 'm': /* material name */ |
241 |
if (*++cp != '=') |
242 |
break; |
243 |
if (!*++cp || isspace(*cp)) |
244 |
break; |
245 |
atos(thisillum.matname, MAXSTR, cp); |
246 |
cp = sskip(cp); |
247 |
if (!(thisillum.flags & IL_DATCLB)) { |
248 |
strcpy(thisillum.datafile, thisillum.matname); |
249 |
thisillum.dfnum = 0; |
250 |
} |
251 |
continue; |
252 |
case 'f': /* data file name */ |
253 |
if (*++cp != '=') |
254 |
break; |
255 |
if (!*++cp || isspace(*cp)) { |
256 |
strcpy(thisillum.datafile,thisillum.matname); |
257 |
thisillum.dfnum = 0; |
258 |
thisillum.flags &= ~IL_DATCLB; |
259 |
continue; |
260 |
} |
261 |
atos(thisillum.datafile, MAXSTR, cp); |
262 |
cp = sskip(cp); |
263 |
thisillum.dfnum = 0; |
264 |
thisillum.flags |= IL_DATCLB; |
265 |
continue; |
266 |
case 'i': /* include material */ |
267 |
case 'e': /* exclude material */ |
268 |
if (cp[1] != '=') |
269 |
break; |
270 |
matselect = (*cp == 'i') ? S_ELEM : S_COMPL; |
271 |
cp += 2; |
272 |
atos(matcheck, MAXSTR, cp); |
273 |
cp = sskip(cp); |
274 |
continue; |
275 |
case 'a': /* use everything */ |
276 |
cp = sskip(cp); |
277 |
matselect = S_ALL; |
278 |
continue; |
279 |
case 'n': /* use nothing (passive) */ |
280 |
cp = sskip(cp); |
281 |
matselect = S_NONE; |
282 |
continue; |
283 |
case 'c': /* color calculation */ |
284 |
if (*++cp != '=') |
285 |
break; |
286 |
switch (*++cp) { |
287 |
case 'a': /* average */ |
288 |
thisillum.flags = (thisillum.flags|IL_COLAVG) |
289 |
& ~IL_COLDST; |
290 |
break; |
291 |
case 'd': /* distribution */ |
292 |
thisillum.flags |= (IL_COLDST|IL_COLAVG); |
293 |
break; |
294 |
case 'n': /* none */ |
295 |
thisillum.flags &= ~(IL_COLAVG|IL_COLDST); |
296 |
break; |
297 |
default: |
298 |
goto opterr; |
299 |
} |
300 |
cp = sskip(cp); |
301 |
continue; |
302 |
case 'd': /* sample density / BSDF data */ |
303 |
if (*++cp != '=') |
304 |
break; |
305 |
if (thisillum.sd != NULL) { |
306 |
free_BSDF(thisillum.sd); |
307 |
thisillum.sd = NULL; |
308 |
} |
309 |
if (!*++cp || isspace(*cp)) |
310 |
continue; |
311 |
if (isintd(++cp, " \t\n\r")) { |
312 |
thisillum.sampdens = atoi(cp); |
313 |
} else { |
314 |
atos(buf, sizeof(buf), cp); |
315 |
thisillum.sd = load_BSDF(buf); |
316 |
if (thisillum.sd == NULL) |
317 |
break; |
318 |
} |
319 |
cp = sskip(cp); |
320 |
continue; |
321 |
case 's': /* surface super-samples */ |
322 |
if (*++cp != '=') |
323 |
break; |
324 |
if (!isintd(++cp, " \t\n\r")) |
325 |
break; |
326 |
thisillum.nsamps = atoi(cp); |
327 |
cp = sskip(cp); |
328 |
continue; |
329 |
case 'l': /* light sources */ |
330 |
cp++; |
331 |
if (*cp == '+') |
332 |
thisillum.flags |= IL_LIGHT; |
333 |
else if (*cp == '-') |
334 |
thisillum.flags &= ~IL_LIGHT; |
335 |
else |
336 |
break; |
337 |
cp++; |
338 |
continue; |
339 |
case 'b': /* brightness */ |
340 |
if (*++cp != '=') |
341 |
break; |
342 |
if (!isfltd(++cp, " \t\n\r")) |
343 |
break; |
344 |
thisillum.minbrt = atof(cp); |
345 |
if (thisillum.minbrt < 0.) |
346 |
thisillum.minbrt = 0.; |
347 |
cp = sskip(cp); |
348 |
continue; |
349 |
case 'o': /* output file */ |
350 |
if (*++cp != '=') |
351 |
break; |
352 |
if (!*++cp || isspace(*cp)) |
353 |
break; |
354 |
atos(buf, sizeof(buf), cp); |
355 |
cp = sskip(cp); |
356 |
if (freopen(buf, "w", stdout) == NULL) { |
357 |
sprintf(errmsg, |
358 |
"cannot open output file \"%s\"", buf); |
359 |
error(SYSTEM, errmsg); |
360 |
} |
361 |
doneheader = 0; |
362 |
continue; |
363 |
case 'u': /* up direction */ |
364 |
if (*++cp != '=') |
365 |
break; |
366 |
if (!*++cp || isspace(*cp)) { |
367 |
thisillum.udir = UDunknown; |
368 |
continue; |
369 |
} |
370 |
negax = 0; |
371 |
if (*cp == '+') |
372 |
cp++; |
373 |
else if (*cp == '-') { |
374 |
negax++; |
375 |
cp++; |
376 |
} |
377 |
switch (*cp++) { |
378 |
case 'x': |
379 |
case 'X': |
380 |
thisillum.udir = negax ? UDxneg : UDxpos; |
381 |
break; |
382 |
case 'y': |
383 |
case 'Y': |
384 |
thisillum.udir = negax ? UDyneg : UDypos; |
385 |
break; |
386 |
case 'z': |
387 |
case 'Z': |
388 |
thisillum.udir = negax ? UDxneg : UDxpos; |
389 |
break; |
390 |
default: |
391 |
thisillum.udir = UDunknown; |
392 |
break; |
393 |
} |
394 |
if (thisillum.udir == UDunknown || !isspace(*cp)) |
395 |
break; |
396 |
continue; |
397 |
case 't': /* object thickness */ |
398 |
if (*++cp != '=') |
399 |
break; |
400 |
if (!isfltd(++cp, " \t\n\r")) |
401 |
break; |
402 |
thisillum.thick = atof(cp); |
403 |
if (thisillum.thick < .0) |
404 |
thisillum.thick = .0; |
405 |
cp = sskip(cp); |
406 |
continue; |
407 |
case '!': /* processed file! */ |
408 |
sprintf(errmsg, "(%s): already processed!", nm); |
409 |
error(WARNING, errmsg); |
410 |
matselect = S_NONE; |
411 |
return; |
412 |
} |
413 |
opterr: /* skip faulty option */ |
414 |
while (*cp && !isspace(*cp)) |
415 |
cp++; |
416 |
nerrs++; |
417 |
} |
418 |
/* print header? */ |
419 |
checkhead(); |
420 |
/* issue warnings? */ |
421 |
if (nerrs) { |
422 |
sprintf(errmsg, "(%s): %d error(s) in option line:", |
423 |
nm, nerrs); |
424 |
error(WARNING, errmsg); |
425 |
wputs(s); |
426 |
printf("# %s: the following option line has %d error(s):\n", |
427 |
progname, nerrs); |
428 |
} |
429 |
/* print pure comment */ |
430 |
printf("# %s", s+2); |
431 |
} |
432 |
|
433 |
void |
434 |
printopts(void) /* print out option default values */ |
435 |
{ |
436 |
printf("m=%-15s\t\t# material name\n", thisillum.matname); |
437 |
printf("f=%-15s\t\t# data file name\n", thisillum.datafile); |
438 |
if (thisillum.flags & IL_COLAVG) |
439 |
if (thisillum.flags & IL_COLDST) |
440 |
printf("c=d\t\t\t\t# color distribution\n"); |
441 |
else |
442 |
printf("c=a\t\t\t\t# color average\n"); |
443 |
else |
444 |
printf("c=n\t\t\t\t# color none\n"); |
445 |
if (thisillum.flags & IL_LIGHT) |
446 |
printf("l+\t\t\t\t# light type on\n"); |
447 |
else |
448 |
printf("l-\t\t\t\t# light type off\n"); |
449 |
printf("d=%d\t\t\t\t# density of points\n", thisillum.sampdens); |
450 |
printf("s=%d\t\t\t\t# samples per point\n", thisillum.nsamps); |
451 |
printf("b=%f\t\t\t# minimum average brightness\n", thisillum.minbrt); |
452 |
switch (thisillum.udir) { |
453 |
case UDzneg: |
454 |
fputs("u=-Z\t\t\t\t# up is negative Z\n", stdout); |
455 |
break; |
456 |
case UDyneg: |
457 |
fputs("u=-Y\t\t\t\t# up is negative Y\n", stdout); |
458 |
break; |
459 |
case UDxneg: |
460 |
fputs("u=-X\t\t\t\t# up is negative X\n", stdout); |
461 |
break; |
462 |
case UDxpos: |
463 |
fputs("u=+X\t\t\t\t# up is positive X\n", stdout); |
464 |
break; |
465 |
case UDypos: |
466 |
fputs("u=+Y\t\t\t\t# up is positive Y\n", stdout); |
467 |
break; |
468 |
case UDzpos: |
469 |
fputs("u=+Z\t\t\t\t# up is positive Z\n", stdout); |
470 |
break; |
471 |
case UDunknown: |
472 |
break; |
473 |
} |
474 |
printf("t=%f\t\t\t# object thickness\n", thisillum.thick); |
475 |
} |
476 |
|
477 |
|
478 |
void |
479 |
printhead( /* print out header */ |
480 |
register int ac, |
481 |
register char **av |
482 |
) |
483 |
{ |
484 |
putchar('#'); |
485 |
while (ac-- > 0) { |
486 |
putchar(' '); |
487 |
fputs(*av++, stdout); |
488 |
} |
489 |
fputs("\n#@mkillum !\n", stdout); |
490 |
} |
491 |
|
492 |
|
493 |
void |
494 |
xobject( /* translate an object from fp */ |
495 |
FILE *fp, |
496 |
char *nm |
497 |
) |
498 |
{ |
499 |
OBJREC thisobj; |
500 |
char str[MAXSTR]; |
501 |
int doit; |
502 |
/* read the object */ |
503 |
if (fgetword(thisillum.altmat, MAXSTR, fp) == NULL) |
504 |
goto readerr; |
505 |
if (fgetword(str, MAXSTR, fp) == NULL) |
506 |
goto readerr; |
507 |
/* is it an alias? */ |
508 |
if (!strcmp(str, ALIASKEY)) { |
509 |
if (fgetword(str, MAXSTR, fp) == NULL) |
510 |
goto readerr; |
511 |
printf("\n%s %s %s", thisillum.altmat, ALIASKEY, str); |
512 |
if (fgetword(str, MAXSTR, fp) == NULL) |
513 |
goto readerr; |
514 |
printf("\t%s\n", str); |
515 |
return; |
516 |
} |
517 |
thisobj.omod = OVOID; /* unused field */ |
518 |
if ((thisobj.otype = otype(str)) < 0) { |
519 |
sprintf(errmsg, "(%s): unknown type \"%s\"", nm, str); |
520 |
error(USER, errmsg); |
521 |
} |
522 |
if (fgetword(str, MAXSTR, fp) == NULL) |
523 |
goto readerr; |
524 |
thisobj.oname = str; |
525 |
if (readfargs(&thisobj.oargs, fp) != 1) |
526 |
goto readerr; |
527 |
thisobj.os = NULL; |
528 |
/* check for translation */ |
529 |
switch (matselect) { |
530 |
case S_NONE: |
531 |
doit = 0; |
532 |
break; |
533 |
case S_ALL: |
534 |
doit = 1; |
535 |
break; |
536 |
case S_ELEM: |
537 |
doit = !strcmp(thisillum.altmat, matcheck); |
538 |
break; |
539 |
case S_COMPL: |
540 |
doit = strcmp(thisillum.altmat, matcheck); |
541 |
break; |
542 |
} |
543 |
doit = doit && issurface(thisobj.otype); |
544 |
/* print header? */ |
545 |
checkhead(); |
546 |
/* process object */ |
547 |
if (doit) |
548 |
switch (thisobj.otype) { |
549 |
case OBJ_FACE: |
550 |
my_face(&thisobj, &thisillum, nm); |
551 |
break; |
552 |
case OBJ_SPHERE: |
553 |
my_sphere(&thisobj, &thisillum, nm); |
554 |
break; |
555 |
case OBJ_RING: |
556 |
my_ring(&thisobj, &thisillum, nm); |
557 |
break; |
558 |
default: |
559 |
my_default(&thisobj, &thisillum, nm); |
560 |
break; |
561 |
} |
562 |
else |
563 |
printobj(thisillum.altmat, &thisobj); |
564 |
/* free arguments */ |
565 |
freefargs(&thisobj.oargs); |
566 |
return; |
567 |
readerr: |
568 |
sprintf(errmsg, "(%s): error reading input", nm); |
569 |
error(USER, errmsg); |
570 |
} |