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*/ |
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#include <string.h> |
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#include <time.h> |
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#include "ray.h" |
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#include "source.h" |
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#include "bsdf.h" |
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#include "ambient.h" |
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#include "otypes.h" |
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#include "random.h" |
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#include "data.h" |
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#include "font.h" |
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#include "pmapray.h" |
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char *progname = "unknown_app"; /* caller sets to argv[0] */ |
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void (*addobjnotify[8])() = {ambnotify, NULL}; |
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|
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int castonly = 0; /* only doing ray-casting? */ |
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|
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int do_irrad = 0; /* compute irradiance? */ |
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|
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int rand_samp = 0; /* pure Monte Carlo sampling? */ |
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int rand_samp = 1; /* pure Monte Carlo sampling? */ |
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|
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .03; /* shadow threshold */ |
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int backvis = 1; /* back face visibility */ |
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|
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int maxdepth = 8; /* maximum recursion depth */ |
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double minweight = 2e-3; /* minimum ray weight */ |
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int maxdepth = -10; /* maximum recursion depth */ |
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double minweight = 1e-4; /* minimum ray weight */ |
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char *ambfile = NULL; /* ambient file name */ |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
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extern void |
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static void |
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reset_random(void) /* re-initialize random number generator */ |
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{ |
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if (rand_samp) { |
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srandom((long)time(0)); |
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initurand(0); |
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} else { |
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srandom(0L); |
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initurand(2048); |
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} |
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} |
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|
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|
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void |
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ray_init( /* initialize ray-tracing calculation */ |
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char *otnm |
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) |
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if (ofun[OBJ_SPHERE].funp == o_default) |
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initotypes(); |
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/* initialize urand */ |
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initurand(2048); |
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/* read scene octree */ |
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readoct(octname = otnm, ~(IO_FILES|IO_INFO), &thescene, NULL); |
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reset_random(); |
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/* initialize spectral sampling */ |
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if (setspectrsamp(CNDX, WLPART) < 0) |
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error(USER, "unsupported spectral sampling"); |
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|
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octname = savqstr(otnm); /* read scene octree */ |
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readoct(octname, ~(IO_FILES|IO_INFO), &thescene, NULL); |
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nsceneobjs = nobjects; |
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/* find and mark sources */ |
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marksources(); |
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/* initialize ambient calculation */ |
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setambient(); |
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/* ready to go... */ |
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|
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if (!castonly) { /* any actual ray traversal to do? */ |
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|
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ray_init_pmap(); /* PMAP: set up & load photon maps */ |
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|
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marksources(); /* find and mark sources */ |
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|
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setambient(); /* initialize ambient calculation */ |
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} else |
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distantsources(); /* else mark only distant sources */ |
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} |
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|
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< |
extern void |
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> |
|
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void |
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ray_trace( /* trace a primary ray */ |
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RAY *r |
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) |
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{ |
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rayorigin(r, PRIMARY, NULL, NULL); |
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samplendx = rand_samp ? random() : samplendx+1; |
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> |
samplendx++; |
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rayvalue(r); /* assumes origin and direction are set */ |
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} |
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|
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|
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< |
extern void |
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> |
void |
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ray_done( /* free ray-tracing data */ |
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int freall |
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) |
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donesets(); |
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octdone(); |
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thescene.cutree = EMPTY; |
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octname = NULL; |
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> |
freeqstr(octname); octname = NULL; |
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> |
retainfonts = 0; |
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if (freall) { |
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retainfonts = 0; |
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freefont(NULL); |
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freedata(NULL); |
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SDfreeCache(NULL); |
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initurand(0); |
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} |
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if (nobjects > 0) { |
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sprintf(errmsg, "%ld objects left after call to ray_done()", |
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< |
nobjects); |
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> |
(long)nobjects); |
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error(WARNING, errmsg); |
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} |
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+ |
|
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+ |
ray_done_pmap(); |
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} |
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|
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|
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< |
extern void |
| 248 |
> |
void |
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ray_save( /* save current parameter settings */ |
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RAYPARAMS *rp |
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) |
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if (rp == NULL) |
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return; |
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rp->do_irrad = do_irrad; |
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+ |
rp->rand_samp = rand_samp; |
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rp->dstrsrc = dstrsrc; |
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rp->shadthresh = shadthresh; |
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rp->shadcert = shadcert; |
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rp->backvis = backvis; |
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rp->maxdepth = maxdepth; |
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rp->minweight = minweight; |
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copycolor(rp->ambval, ambval); |
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– |
memset(rp->ambfile, '\0', sizeof(rp->ambfile)); |
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if (ambfile != NULL) |
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strncpy(rp->ambfile, ambfile, sizeof(rp->ambfile)-1); |
| 277 |
+ |
else |
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+ |
memset(rp->ambfile, '\0', sizeof(rp->ambfile)); |
| 279 |
+ |
copycolor(rp->ambval, ambval); |
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rp->ambvwt = ambvwt; |
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rp->ambacc = ambacc; |
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rp->ambres = ambres; |
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if (ndx+len >= sizeof(rp->amblval)) |
| 292 |
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break; |
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strcpy(rp->amblval+ndx, amblist[i]); |
| 294 |
+ |
rp->amblndx[i] = ndx; |
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ndx += len+1; |
| 296 |
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} |
| 297 |
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while (i <= AMBLLEN) |
| 298 |
|
rp->amblndx[i++] = -1; |
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+ |
|
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+ |
/* PMAP: save photon mapping params */ |
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+ |
ray_save_pmap(rp); |
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} |
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|
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|
| 305 |
< |
extern void |
| 305 |
> |
void |
| 306 |
|
ray_restore( /* restore parameter settings */ |
| 307 |
|
RAYPARAMS *rp |
| 308 |
|
) |
| 309 |
|
{ |
| 310 |
< |
register int i; |
| 310 |
> |
int i; |
| 311 |
|
|
| 312 |
|
if (rp == NULL) { /* restore defaults */ |
| 313 |
|
RAYPARAMS dflt; |
| 317 |
|
} |
| 318 |
|
/* restore saved settings */ |
| 319 |
|
do_irrad = rp->do_irrad; |
| 320 |
+ |
if (!rand_samp != !rp->rand_samp) { |
| 321 |
+ |
rand_samp = rp->rand_samp; |
| 322 |
+ |
reset_random(); |
| 323 |
+ |
} |
| 324 |
|
dstrsrc = rp->dstrsrc; |
| 325 |
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shadthresh = rp->shadthresh; |
| 326 |
|
shadcert = rp->shadcert; |
| 342 |
|
ambdiv = rp->ambdiv; |
| 343 |
|
ambssamp = rp->ambssamp; |
| 344 |
|
ambounce = rp->ambounce; |
| 345 |
+ |
/* a bit dangerous if not static */ |
| 346 |
|
for (i = 0; rp->amblndx[i] >= 0; i++) |
| 347 |
|
amblist[i] = rp->amblval + rp->amblndx[i]; |
| 348 |
|
while (i <= AMBLLEN) |
| 350 |
|
ambincl = rp->ambincl; |
| 351 |
|
/* update ambient calculation */ |
| 352 |
|
ambnotify(OVOID); |
| 353 |
< |
if (thescene.cutree != EMPTY) { |
| 353 |
> |
if ((thescene.cutree != EMPTY) & !castonly) { |
| 354 |
|
int newamb = (ambfile == NULL) ? rp->ambfile[0] : |
| 355 |
|
strcmp(ambfile, rp->ambfile) ; |
| 356 |
|
|
| 372 |
|
ambres = rp->ambres; |
| 373 |
|
ambacc = rp->ambacc; |
| 374 |
|
} |
| 375 |
+ |
|
| 376 |
+ |
/* PMAP: restore photon mapping params */ |
| 377 |
+ |
ray_restore_pmap(rp); |
| 378 |
|
} |
| 379 |
|
|
| 380 |
|
|
| 381 |
< |
extern void |
| 381 |
> |
void |
| 382 |
|
ray_defaults( /* get default parameter values */ |
| 383 |
|
RAYPARAMS *rp |
| 384 |
|
) |
| 389 |
|
return; |
| 390 |
|
|
| 391 |
|
rp->do_irrad = 0; |
| 392 |
+ |
rp->rand_samp = 1; |
| 393 |
|
rp->dstrsrc = 0.0; |
| 394 |
< |
rp->shadthresh = .03; |
| 395 |
< |
rp->shadcert = .75; |
| 394 |
> |
rp->shadthresh = 0.03; |
| 395 |
> |
rp->shadcert = 0.75; |
| 396 |
|
rp->directrelay = 2; |
| 397 |
|
rp->vspretest = 512; |
| 398 |
|
rp->directvis = 1; |
| 401 |
|
setcolor(rp->salbedo, 0., 0., 0.); |
| 402 |
|
rp->seccg = 0.; |
| 403 |
|
rp->ssampdist = 0.; |
| 404 |
< |
rp->specthresh = .15; |
| 404 |
> |
rp->specthresh = 0.15; |
| 405 |
|
rp->specjitter = 1.; |
| 406 |
|
rp->backvis = 1; |
| 407 |
< |
rp->maxdepth = 8; |
| 408 |
< |
rp->minweight = 2e-3; |
| 363 |
< |
setcolor(rp->ambval, 0., 0., 0.); |
| 407 |
> |
rp->maxdepth = -10; |
| 408 |
> |
rp->minweight = 1e-4; |
| 409 |
|
memset(rp->ambfile, '\0', sizeof(rp->ambfile)); |
| 410 |
+ |
setcolor(rp->ambval, 0., 0., 0.); |
| 411 |
|
rp->ambvwt = 0; |
| 412 |
|
rp->ambres = 256; |
| 413 |
< |
rp->ambacc = 0.15; |
| 413 |
> |
rp->ambacc = 0.1; |
| 414 |
|
rp->ambdiv = 1024; |
| 415 |
|
rp->ambssamp = 512; |
| 416 |
|
rp->ambounce = 0; |
| 418 |
|
memset(rp->amblval, '\0', sizeof(rp->amblval)); |
| 419 |
|
for (i = AMBLLEN+1; i--; ) |
| 420 |
|
rp->amblndx[i] = -1; |
| 421 |
+ |
|
| 422 |
+ |
/* PMAP: restore photon mapping defaults */ |
| 423 |
+ |
ray_defaults_pmap(rp); |
| 424 |
|
} |
