10 |
|
* |
11 |
|
*/ |
12 |
|
|
13 |
+ |
#define _USE_MATH_DEFINES |
14 |
|
#include <stdio.h> |
15 |
|
#include <stdlib.h> |
16 |
+ |
#include <string.h> |
17 |
|
#include <math.h> |
18 |
+ |
#include <ctype.h> |
19 |
|
#include "ezxml.h" |
20 |
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#include "hilbert.h" |
21 |
|
#include "bsdf.h" |
109 |
|
if ((geom = ezxml_child(wdb, "Geometry")) == NULL || |
110 |
|
(mgfstr = ezxml_txt(geom)) == NULL) |
111 |
|
return SDEnone; |
112 |
+ |
while (isspace(*mgfstr)) |
113 |
+ |
++mgfstr; |
114 |
+ |
if (!*mgfstr) |
115 |
+ |
return SDEnone; |
116 |
|
if ((fmt = ezxml_attr(geom, "format")) != NULL && |
117 |
|
strcasecmp(fmt, "MGF")) { |
118 |
|
sprintf(SDerrorDetail, |
176 |
|
/* try loading variable resolution data */ |
177 |
|
lastErr = SDloadTre(sd, wtl); |
178 |
|
/* check our result */ |
179 |
< |
switch (lastErr) { |
173 |
< |
case SDEformat: |
174 |
< |
case SDEdata: |
175 |
< |
case SDEsupport: /* possibly we just tried the wrong format */ |
179 |
> |
if (lastErr == SDEsupport) /* try matrix BSDF if not tree data */ |
180 |
|
lastErr = SDloadMtx(sd, wtl); |
181 |
< |
break; |
178 |
< |
default: /* variable res. OK else serious error */ |
179 |
< |
break; |
180 |
< |
} |
181 |
> |
|
182 |
|
/* done with XML file */ |
183 |
|
ezxml_free(fl); |
184 |
|
|
406 |
|
|
407 |
|
/* Sample an individual BSDF component */ |
408 |
|
SDError |
409 |
< |
SDsampComponent(SDValue *sv, FVECT outVec, const FVECT inVec, |
409 |
< |
double randX, SDComponent *sdc) |
409 |
> |
SDsampComponent(SDValue *sv, FVECT ioVec, double randX, SDComponent *sdc) |
410 |
|
{ |
411 |
|
float coef[SDmaxCh]; |
412 |
|
SDError ec; |
413 |
+ |
FVECT inVec; |
414 |
|
const SDCDst *cd; |
415 |
|
double d; |
416 |
|
int n; |
417 |
|
/* check arguments */ |
418 |
< |
if ((sv == NULL) | (outVec == NULL) | (inVec == NULL) | (sdc == NULL)) |
418 |
> |
if ((sv == NULL) | (ioVec == NULL) | (sdc == NULL)) |
419 |
|
return SDEargument; |
420 |
|
/* get cumulative distribution */ |
421 |
+ |
VCOPY(inVec, ioVec); |
422 |
|
cd = (*sdc->func->getCDist)(inVec, sdc); |
423 |
|
if (cd == NULL) |
424 |
|
return SDEmemory; |
425 |
|
if (cd->cTotal <= 1e-7) { /* anything to sample? */ |
426 |
|
sv->spec = c_dfcolor; |
427 |
|
sv->cieY = .0; |
428 |
< |
memset(outVec, 0, 3*sizeof(double)); |
428 |
> |
memset(ioVec, 0, 3*sizeof(double)); |
429 |
|
return SDEnone; |
430 |
|
} |
431 |
|
sv->cieY = cd->cTotal; |
432 |
|
/* compute sample direction */ |
433 |
< |
ec = (*sdc->func->sampCDist)(outVec, randX, cd); |
433 |
> |
ec = (*sdc->func->sampCDist)(ioVec, randX, cd); |
434 |
|
if (ec) |
435 |
|
return ec; |
436 |
|
/* get BSDF color */ |
437 |
< |
n = (*sdc->func->getBSDFs)(coef, outVec, inVec, sdc->dist); |
437 |
> |
n = (*sdc->func->getBSDFs)(coef, ioVec, inVec, sdc); |
438 |
|
if (n <= 0) { |
439 |
|
strcpy(SDerrorDetail, "BSDF sample value error"); |
440 |
|
return SDEinternal; |
497 |
|
SDError ec; |
498 |
|
int i; |
499 |
|
/* check arguments */ |
500 |
< |
if ((projSA == NULL) | (v1 == NULL)) |
500 |
> |
if ((projSA == NULL) | (v1 == NULL) | (sd == NULL)) |
501 |
|
return SDEargument; |
502 |
|
/* initialize extrema */ |
503 |
|
switch (qflags) { |
517 |
|
rdf = sd->rf; |
518 |
|
else |
519 |
|
rdf = sd->rb; |
520 |
< |
tdf = NULL; /* transmitted component? */ |
521 |
< |
if (v2 != NULL && v1[2] > 0 ^ v2[2] > 0) { |
522 |
< |
rdf = NULL; |
523 |
< |
tdf = sd->tf; |
524 |
< |
} |
520 |
> |
tdf = sd->tf; |
521 |
> |
if (v2 != NULL) /* bidirectional? */ |
522 |
> |
if (v1[2] > 0 ^ v2[2] > 0) |
523 |
> |
rdf = NULL; |
524 |
> |
else |
525 |
> |
tdf = NULL; |
526 |
|
ec = SDEdata; /* run through components */ |
527 |
|
for (i = (rdf==NULL) ? 0 : rdf->ncomp; i--; ) { |
528 |
|
ec = (*rdf->comp[i].func->queryProjSA)(projSA, v1, v2, |
529 |
< |
qflags, rdf->comp[i].dist); |
529 |
> |
qflags, &rdf->comp[i]); |
530 |
|
if (ec) |
531 |
|
return ec; |
532 |
|
} |
533 |
|
for (i = (tdf==NULL) ? 0 : tdf->ncomp; i--; ) { |
534 |
|
ec = (*tdf->comp[i].func->queryProjSA)(projSA, v1, v2, |
535 |
< |
qflags, tdf->comp[i].dist); |
535 |
> |
qflags, &tdf->comp[i]); |
536 |
|
if (ec) |
537 |
|
return ec; |
538 |
|
} |
574 |
|
i = (sdf != NULL) ? sdf->ncomp : 0; |
575 |
|
while (i-- > 0) { |
576 |
|
nch = (*sdf->comp[i].func->getBSDFs)(coef, outVec, inVec, |
577 |
< |
sdf->comp[i].dist); |
577 |
> |
&sdf->comp[i]); |
578 |
|
while (nch-- > 0) { |
579 |
|
c_cmix(&sv->spec, sv->cieY, &sv->spec, |
580 |
|
coef[nch], &sdf->comp[i].cspec[nch]); |
629 |
|
|
630 |
|
/* Sample BSDF direction based on the given random variable */ |
631 |
|
SDError |
632 |
< |
SDsampBSDF(SDValue *sv, FVECT outVec, const FVECT inVec, |
630 |
< |
double randX, int sflags, const SDData *sd) |
632 |
> |
SDsampBSDF(SDValue *sv, FVECT ioVec, double randX, int sflags, const SDData *sd) |
633 |
|
{ |
634 |
|
SDError ec; |
635 |
+ |
FVECT inVec; |
636 |
|
int inFront; |
637 |
|
SDSpectralDF *rdf; |
638 |
|
double rdiff; |
641 |
|
SDComponent *sdc; |
642 |
|
const SDCDst **cdarr = NULL; |
643 |
|
/* check arguments */ |
644 |
< |
if ((sv == NULL) | (outVec == NULL) | (inVec == NULL) | (sd == NULL) | |
644 |
> |
if ((sv == NULL) | (ioVec == NULL) | (sd == NULL) | |
645 |
|
(randX < 0) | (randX >= 1.)) |
646 |
|
return SDEargument; |
647 |
|
/* whose side are we on? */ |
648 |
+ |
VCOPY(inVec, ioVec); |
649 |
|
inFront = (inVec[2] > 0); |
650 |
|
/* remember diffuse portions */ |
651 |
|
if (inFront) { |
686 |
|
} |
687 |
|
if (sv->cieY <= 1e-7) { /* anything to sample? */ |
688 |
|
sv->cieY = .0; |
689 |
< |
memset(outVec, 0, 3*sizeof(double)); |
689 |
> |
memset(ioVec, 0, 3*sizeof(double)); |
690 |
|
return SDEnone; |
691 |
|
} |
692 |
|
/* scale random variable */ |
693 |
|
randX *= sv->cieY; |
694 |
|
/* diffuse reflection? */ |
695 |
|
if (randX < rdiff) { |
696 |
< |
SDdiffuseSamp(outVec, inFront, randX/rdiff); |
696 |
> |
SDdiffuseSamp(ioVec, inFront, randX/rdiff); |
697 |
|
goto done; |
698 |
|
} |
699 |
|
randX -= rdiff; |
701 |
|
if ((sflags & SDsampDf+SDsampT) == SDsampDf+SDsampT) { |
702 |
|
if (randX < sd->tLamb.cieY) { |
703 |
|
sv->spec = sd->tLamb.spec; |
704 |
< |
SDdiffuseSamp(outVec, !inFront, randX/sd->tLamb.cieY); |
704 |
> |
SDdiffuseSamp(ioVec, !inFront, randX/sd->tLamb.cieY); |
705 |
|
goto done; |
706 |
|
} |
707 |
|
randX -= sd->tLamb.cieY; |
713 |
|
return SDEinternal; |
714 |
|
/* compute sample direction */ |
715 |
|
sdc = (i < nr) ? &rdf->comp[i] : &sd->tf->comp[i-nr]; |
716 |
< |
ec = (*sdc->func->sampCDist)(outVec, randX/cdarr[i]->cTotal, cdarr[i]); |
716 |
> |
ec = (*sdc->func->sampCDist)(ioVec, randX/cdarr[i]->cTotal, cdarr[i]); |
717 |
|
if (ec) |
718 |
|
return ec; |
719 |
|
/* compute color */ |
720 |
< |
j = (*sdc->func->getBSDFs)(coef, outVec, inVec, sdc->dist); |
720 |
> |
j = (*sdc->func->getBSDFs)(coef, ioVec, inVec, sdc); |
721 |
|
if (j <= 0) { |
722 |
|
sprintf(SDerrorDetail, "BSDF \"%s\" sampling value error", |
723 |
|
sd->name); |
814 |
|
|
815 |
|
#include "standard.h" |
816 |
|
#include "paths.h" |
813 |
– |
#include <ctype.h> |
817 |
|
|
818 |
|
#define MAXLATS 46 /* maximum number of latitudes */ |
819 |
|
|