| 38 |
|
/* Additional information on last error (ASCII English) */ |
| 39 |
|
char SDerrorDetail[256]; |
| 40 |
|
|
| 41 |
+ |
/* Empty distribution for getCDist() calls that fail for some reason */ |
| 42 |
+ |
const SDCDst SDemptyCD; |
| 43 |
+ |
|
| 44 |
|
/* Cache of loaded BSDFs */ |
| 45 |
|
struct SDCache_s *SDcacheList = NULL; |
| 46 |
|
|
| 95 |
|
|
| 96 |
|
if (wdb == NULL) /* no geometry section? */ |
| 97 |
|
return SDEnone; |
| 98 |
+ |
if ((geom = ezxml_child(wdb, "Name")) != NULL) { |
| 99 |
+ |
strncpy(sd->matn, ezxml_txt(geom), SDnameLn); |
| 100 |
+ |
if (sd->matn[SDnameLn-1]) |
| 101 |
+ |
strcpy(sd->matn+(SDnameLn-4), "..."); |
| 102 |
+ |
} |
| 103 |
+ |
if ((geom = ezxml_child(wdb, "Manufacturer")) != NULL) { |
| 104 |
+ |
strncpy(sd->makr, ezxml_txt(geom), SDnameLn); |
| 105 |
+ |
if (sd->makr[SDnameLn-1]) |
| 106 |
+ |
strcpy(sd->makr+(SDnameLn-4), "..."); |
| 107 |
+ |
} |
| 108 |
|
sd->dim[0] = sd->dim[1] = sd->dim[2] = .0; |
| 109 |
+ |
SDerrorDetail[0] = '\0'; |
| 110 |
|
if ((geom = ezxml_child(wdb, "Width")) != NULL) |
| 111 |
|
sd->dim[0] = atof(ezxml_txt(geom)) * |
| 112 |
|
to_meters(ezxml_attr(geom, "unit")); |
| 117 |
|
sd->dim[2] = atof(ezxml_txt(geom)) * |
| 118 |
|
to_meters(ezxml_attr(geom, "unit")); |
| 119 |
|
if ((sd->dim[0] < 0) | (sd->dim[1] < 0) | (sd->dim[2] < 0)) { |
| 120 |
< |
sprintf(SDerrorDetail, "Negative size in \"%s\"", sd->name); |
| 120 |
> |
if (!SDerrorDetail[0]) |
| 121 |
> |
sprintf(SDerrorDetail, "Negative dimension in \"%s\"", |
| 122 |
> |
sd->name); |
| 123 |
|
return SDEdata; |
| 124 |
|
} |
| 125 |
|
if ((geom = ezxml_child(wdb, "Geometry")) == NULL || |
| 137 |
|
return SDEsupport; |
| 138 |
|
} |
| 139 |
|
cfact = to_meters(ezxml_attr(geom, "unit")); |
| 140 |
+ |
if (cfact <= 0) |
| 141 |
+ |
return SDEformat; |
| 142 |
|
sd->mgf = (char *)malloc(strlen(mgfstr)+32); |
| 143 |
|
if (sd->mgf == NULL) { |
| 144 |
|
strcpy(SDerrorDetail, "Out of memory in SDloadGeometry"); |
| 182 |
|
} |
| 183 |
|
wtl = ezxml_child(ezxml_child(fl, "Optical"), "Layer"); |
| 184 |
|
if (wtl == NULL) { |
| 185 |
< |
sprintf(SDerrorDetail, "BSDF \"%s\": no optical layer'", |
| 185 |
> |
sprintf(SDerrorDetail, "BSDF \"%s\": no optical layers'", |
| 186 |
|
sd->name); |
| 187 |
|
ezxml_free(fl); |
| 188 |
|
return SDEformat; |
| 189 |
|
} |
| 190 |
|
/* load geometry if present */ |
| 191 |
|
lastErr = SDloadGeometry(sd, ezxml_child(wtl, "Material")); |
| 192 |
< |
if (lastErr) |
| 192 |
> |
if (lastErr) { |
| 193 |
> |
ezxml_free(fl); |
| 194 |
|
return lastErr; |
| 195 |
+ |
} |
| 196 |
|
/* try loading variable resolution data */ |
| 197 |
|
lastErr = SDloadTre(sd, wtl); |
| 198 |
|
/* check our result */ |
| 216 |
|
if (sd->tf != NULL && sd->tf->maxHemi <= .001) { |
| 217 |
|
SDfreeSpectralDF(sd->tf); sd->tf = NULL; |
| 218 |
|
} |
| 219 |
+ |
if (sd->tb != NULL && sd->tb->maxHemi <= .001) { |
| 220 |
+ |
SDfreeSpectralDF(sd->tb); sd->tb = NULL; |
| 221 |
+ |
} |
| 222 |
|
/* return success */ |
| 223 |
|
return SDEnone; |
| 224 |
|
} |
| 247 |
|
return df; |
| 248 |
|
} |
| 249 |
|
|
| 250 |
+ |
/* Add component(s) to spectral distribution function */ |
| 251 |
+ |
SDSpectralDF * |
| 252 |
+ |
SDaddComponent(SDSpectralDF *odf, int nadd) |
| 253 |
+ |
{ |
| 254 |
+ |
SDSpectralDF *df; |
| 255 |
+ |
|
| 256 |
+ |
if (odf == NULL) |
| 257 |
+ |
return SDnewSpectralDF(nadd); |
| 258 |
+ |
if (nadd <= 0) |
| 259 |
+ |
return odf; |
| 260 |
+ |
df = (SDSpectralDF *)realloc(odf, sizeof(SDSpectralDF) + |
| 261 |
+ |
(odf->ncomp+nadd-1)*sizeof(SDComponent)); |
| 262 |
+ |
if (df == NULL) { |
| 263 |
+ |
sprintf(SDerrorDetail, |
| 264 |
+ |
"Cannot add %d component(s) to spectral DF", nadd); |
| 265 |
+ |
SDfreeSpectralDF(odf); |
| 266 |
+ |
return NULL; |
| 267 |
+ |
} |
| 268 |
+ |
memset(df->comp+df->ncomp, 0, nadd*sizeof(SDComponent)); |
| 269 |
+ |
df->ncomp += nadd; |
| 270 |
+ |
return df; |
| 271 |
+ |
} |
| 272 |
+ |
|
| 273 |
|
/* Free cached cumulative distributions for BSDF component */ |
| 274 |
|
void |
| 275 |
|
SDfreeCumulativeCache(SDSpectralDF *df) |
| 296 |
|
return; |
| 297 |
|
SDfreeCumulativeCache(df); |
| 298 |
|
for (n = df->ncomp; n-- > 0; ) |
| 299 |
< |
(*df->comp[n].func->freeSC)(df->comp[n].dist); |
| 299 |
> |
if (df->comp[n].dist != NULL) |
| 300 |
> |
(*df->comp[n].func->freeSC)(df->comp[n].dist); |
| 301 |
|
free(df); |
| 302 |
|
} |
| 303 |
|
|
| 353 |
|
SDfreeSpectralDF(sd->tf); |
| 354 |
|
sd->tf = NULL; |
| 355 |
|
} |
| 356 |
+ |
if (sd->tb != NULL) { |
| 357 |
+ |
SDfreeSpectralDF(sd->tb); |
| 358 |
+ |
sd->tb = NULL; |
| 359 |
+ |
} |
| 360 |
|
sd->rLambFront.cieY = .0; |
| 361 |
|
sd->rLambFront.spec.flags = 0; |
| 362 |
|
sd->rLambBack.cieY = .0; |
| 444 |
|
SDfreeCumulativeCache(sd->rf); |
| 445 |
|
SDfreeCumulativeCache(sd->rb); |
| 446 |
|
SDfreeCumulativeCache(sd->tf); |
| 447 |
+ |
SDfreeCumulativeCache(sd->tb); |
| 448 |
|
return; |
| 449 |
|
} |
| 450 |
|
/* remove from list and free */ |
| 474 |
|
cd = (*sdc->func->getCDist)(inVec, sdc); |
| 475 |
|
if (cd == NULL) |
| 476 |
|
return SDEmemory; |
| 477 |
< |
if (cd->cTotal <= 1e-7) { /* anything to sample? */ |
| 477 |
> |
if (cd->cTotal <= 1e-6) { /* anything to sample? */ |
| 478 |
|
sv->spec = c_dfcolor; |
| 479 |
|
sv->cieY = .0; |
| 480 |
|
memset(ioVec, 0, 3*sizeof(double)); |
| 511 |
|
unsigned nBits; |
| 512 |
|
double scale; |
| 513 |
|
bitmask_t ndx, coord[MS_MAXDIM]; |
| 514 |
< |
|
| 514 |
> |
|
| 515 |
> |
if (n <= 0) /* check corner cases */ |
| 516 |
> |
return; |
| 517 |
> |
if (randX < 0) randX = 0; |
| 518 |
> |
else if (randX >= 1.) randX = 0.999999999999999; |
| 519 |
> |
if (n == 1) { |
| 520 |
> |
t[0] = randX; |
| 521 |
> |
return; |
| 522 |
> |
} |
| 523 |
|
while (n > MS_MAXDIM) /* punt for higher dimensions */ |
| 524 |
|
t[--n] = rand()*(1./(RAND_MAX+.5)); |
| 525 |
|
nBits = (8*sizeof(bitmask_t) - 1) / n; |
| 573 |
|
case 0: |
| 574 |
|
return SDEargument; |
| 575 |
|
} |
| 576 |
< |
if (v1[2] > 0) /* front surface query? */ |
| 576 |
> |
if (v1[2] > 0) { /* front surface query? */ |
| 577 |
|
rdf = sd->rf; |
| 578 |
< |
else |
| 578 |
> |
tdf = (sd->tf != NULL) ? sd->tf : sd->tb; |
| 579 |
> |
} else { |
| 580 |
|
rdf = sd->rb; |
| 581 |
< |
tdf = sd->tf; |
| 581 |
> |
tdf = (sd->tb != NULL) ? sd->tb : sd->tf; |
| 582 |
> |
} |
| 583 |
|
if (v2 != NULL) /* bidirectional? */ |
| 584 |
|
if (v1[2] > 0 ^ v2[2] > 0) |
| 585 |
|
rdf = NULL; |
| 627 |
|
} else if (!(inFront | outFront)) { |
| 628 |
|
*sv = sd->rLambBack; |
| 629 |
|
sdf = sd->rb; |
| 630 |
< |
} else /* inFront ^ outFront */ { |
| 630 |
> |
} else if (inFront) { |
| 631 |
|
*sv = sd->tLamb; |
| 632 |
< |
sdf = sd->tf; |
| 632 |
> |
sdf = (sd->tf != NULL) ? sd->tf : sd->tb; |
| 633 |
> |
} else /* inBack */ { |
| 634 |
> |
*sv = sd->tLamb; |
| 635 |
> |
sdf = (sd->tb != NULL) ? sd->tb : sd->tf; |
| 636 |
|
} |
| 637 |
|
sv->cieY *= 1./M_PI; |
| 638 |
|
/* add non-diffuse components */ |
| 656 |
|
SDdirectHemi(const FVECT inVec, int sflags, const SDData *sd) |
| 657 |
|
{ |
| 658 |
|
double hsum; |
| 659 |
< |
SDSpectralDF *rdf; |
| 659 |
> |
SDSpectralDF *rdf, *tdf; |
| 660 |
|
const SDCDst *cd; |
| 661 |
|
int i; |
| 662 |
|
/* check arguments */ |
| 666 |
|
if (inVec[2] > 0) { |
| 667 |
|
hsum = sd->rLambFront.cieY; |
| 668 |
|
rdf = sd->rf; |
| 669 |
+ |
tdf = (sd->tf != NULL) ? sd->tf : sd->tb; |
| 670 |
|
} else /* !inFront */ { |
| 671 |
|
hsum = sd->rLambBack.cieY; |
| 672 |
|
rdf = sd->rb; |
| 673 |
+ |
tdf = (sd->tb != NULL) ? sd->tb : sd->tf; |
| 674 |
|
} |
| 675 |
|
if ((sflags & SDsampDf+SDsampR) != SDsampDf+SDsampR) |
| 676 |
|
hsum = .0; |
| 677 |
|
if ((sflags & SDsampDf+SDsampT) == SDsampDf+SDsampT) |
| 678 |
|
hsum += sd->tLamb.cieY; |
| 679 |
|
/* gather non-diffuse components */ |
| 680 |
< |
i = ((sflags & SDsampSp+SDsampR) == SDsampSp+SDsampR && |
| 681 |
< |
rdf != NULL) ? rdf->ncomp : 0; |
| 680 |
> |
i = (((sflags & SDsampSp+SDsampR) == SDsampSp+SDsampR) & |
| 681 |
> |
(rdf != NULL)) ? rdf->ncomp : 0; |
| 682 |
|
while (i-- > 0) { /* non-diffuse reflection */ |
| 683 |
|
cd = (*rdf->comp[i].func->getCDist)(inVec, &rdf->comp[i]); |
| 684 |
|
if (cd != NULL) |
| 685 |
|
hsum += cd->cTotal; |
| 686 |
|
} |
| 687 |
< |
i = ((sflags & SDsampSp+SDsampT) == SDsampSp+SDsampT && |
| 688 |
< |
sd->tf != NULL) ? sd->tf->ncomp : 0; |
| 687 |
> |
i = (((sflags & SDsampSp+SDsampT) == SDsampSp+SDsampT) & |
| 688 |
> |
(tdf != NULL)) ? tdf->ncomp : 0; |
| 689 |
|
while (i-- > 0) { /* non-diffuse transmission */ |
| 690 |
< |
cd = (*sd->tf->comp[i].func->getCDist)(inVec, &sd->tf->comp[i]); |
| 690 |
> |
cd = (*tdf->comp[i].func->getCDist)(inVec, &tdf->comp[i]); |
| 691 |
|
if (cd != NULL) |
| 692 |
|
hsum += cd->cTotal; |
| 693 |
|
} |
| 701 |
|
SDError ec; |
| 702 |
|
FVECT inVec; |
| 703 |
|
int inFront; |
| 704 |
< |
SDSpectralDF *rdf; |
| 704 |
> |
SDSpectralDF *rdf, *tdf; |
| 705 |
|
double rdiff; |
| 706 |
|
float coef[SDmaxCh]; |
| 707 |
|
int i, j, n, nr; |
| 718 |
|
if (inFront) { |
| 719 |
|
*sv = sd->rLambFront; |
| 720 |
|
rdf = sd->rf; |
| 721 |
+ |
tdf = (sd->tf != NULL) ? sd->tf : sd->tb; |
| 722 |
|
} else /* !inFront */ { |
| 723 |
|
*sv = sd->rLambBack; |
| 724 |
|
rdf = sd->rb; |
| 725 |
+ |
tdf = (sd->tb != NULL) ? sd->tb : sd->tf; |
| 726 |
|
} |
| 727 |
|
if ((sflags & SDsampDf+SDsampR) != SDsampDf+SDsampR) |
| 728 |
|
sv->cieY = .0; |
| 730 |
|
if ((sflags & SDsampDf+SDsampT) == SDsampDf+SDsampT) |
| 731 |
|
sv->cieY += sd->tLamb.cieY; |
| 732 |
|
/* gather non-diffuse components */ |
| 733 |
< |
i = nr = ((sflags & SDsampSp+SDsampR) == SDsampSp+SDsampR && |
| 734 |
< |
rdf != NULL) ? rdf->ncomp : 0; |
| 735 |
< |
j = ((sflags & SDsampSp+SDsampT) == SDsampSp+SDsampT && |
| 736 |
< |
sd->tf != NULL) ? sd->tf->ncomp : 0; |
| 733 |
> |
i = nr = (((sflags & SDsampSp+SDsampR) == SDsampSp+SDsampR) & |
| 734 |
> |
(rdf != NULL)) ? rdf->ncomp : 0; |
| 735 |
> |
j = (((sflags & SDsampSp+SDsampT) == SDsampSp+SDsampT) & |
| 736 |
> |
(tdf != NULL)) ? tdf->ncomp : 0; |
| 737 |
|
n = i + j; |
| 738 |
|
if (n > 0 && (cdarr = (const SDCDst **)malloc(n*sizeof(SDCDst *))) == NULL) |
| 739 |
|
return SDEmemory; |
| 740 |
|
while (j-- > 0) { /* non-diffuse transmission */ |
| 741 |
< |
cdarr[i+j] = (*sd->tf->comp[j].func->getCDist)(inVec, &sd->tf->comp[j]); |
| 741 |
> |
cdarr[i+j] = (*tdf->comp[j].func->getCDist)(inVec, &tdf->comp[j]); |
| 742 |
|
if (cdarr[i+j] == NULL) { |
| 743 |
|
free(cdarr); |
| 744 |
|
return SDEmemory; |
| 753 |
|
} |
| 754 |
|
sv->cieY += cdarr[i]->cTotal; |
| 755 |
|
} |
| 756 |
< |
if (sv->cieY <= 1e-7) { /* anything to sample? */ |
| 756 |
> |
if (sv->cieY <= 1e-6) { /* anything to sample? */ |
| 757 |
|
sv->cieY = .0; |
| 758 |
|
memset(ioVec, 0, 3*sizeof(double)); |
| 759 |
|
return SDEnone; |
| 781 |
|
if (i >= n) |
| 782 |
|
return SDEinternal; |
| 783 |
|
/* compute sample direction */ |
| 784 |
< |
sdc = (i < nr) ? &rdf->comp[i] : &sd->tf->comp[i-nr]; |
| 784 |
> |
sdc = (i < nr) ? &rdf->comp[i] : &tdf->comp[i-nr]; |
| 785 |
|
ec = (*sdc->func->sampCDist)(ioVec, randX/cdarr[i]->cTotal, cdarr[i]); |
| 786 |
|
if (ec) |
| 787 |
|
return ec; |
| 1392 |
|
error(WARNING, errmsg); |
| 1393 |
|
ezxml_free(fl); |
| 1394 |
|
return(NULL); |
| 1395 |
< |
} |
| 1396 |
< |
load_angle_basis(ezxml_child(ezxml_child(wtl, |
| 1397 |
< |
"DataDefinition"), "AngleBasis")); |
| 1395 |
> |
} |
| 1396 |
> |
for (wld = ezxml_child(ezxml_child(wtl, |
| 1397 |
> |
"DataDefinition"), "AngleBasis"); |
| 1398 |
> |
wld != NULL; wld = wld->next) |
| 1399 |
> |
load_angle_basis(wld); |
| 1400 |
|
dp = (struct BSDF_data *)calloc(1, sizeof(struct BSDF_data)); |
| 1401 |
|
load_geometry(dp, ezxml_child(wtl, "Material")); |
| 1402 |
|
for (wld = ezxml_child(wtl, "WavelengthData"); |
| 1457 |
|
if (!getBSDF_incvec(v, b, i)) |
| 1458 |
|
return(0); |
| 1459 |
|
rad = sqrt(getBSDF_incohm(b, i) / PI); |
| 1460 |
< |
multisamp(pert, 3, rv); |
| 1460 |
> |
SDmultiSamp(pert, 3, rv); |
| 1461 |
|
for (j = 0; j < 3; j++) |
| 1462 |
|
v[j] += rad*(2.*pert[j] - 1.); |
| 1463 |
|
if (xm != NULL) |
| 1482 |
|
if (!getBSDF_outvec(v, b, o)) |
| 1483 |
|
return(0); |
| 1484 |
|
rad = sqrt(getBSDF_outohm(b, o) / PI); |
| 1485 |
< |
multisamp(pert, 3, rv); |
| 1485 |
> |
SDmultiSamp(pert, 3, rv); |
| 1486 |
|
for (j = 0; j < 3; j++) |
| 1487 |
|
v[j] += rad*(2.*pert[j] - 1.); |
| 1488 |
|
if (xm != NULL) |