| 10 |
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#include <ctype.h> |
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#include "standard.h" |
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#include "platform.h" |
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#include "paths.h" |
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#include "color.h" |
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#include "resolu.h" |
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#include "bsdf.h" |
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#include "bsdf_m.h" |
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|
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char *progname; /* global argv[0] */ |
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|
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return(NULL); /* gratis return */ |
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} |
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|
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< |
/* Multiply two matrices (or a matrix and a vector) and allocate the result*/ |
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> |
/* Scale a matrix by a single value */ |
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static CMATRIX * |
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+ |
cm_scale(const CMATRIX *cm1, const COLOR sca) |
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{ |
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CMATRIX *cmr; |
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int dr, dc; |
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|
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cmr = cm_alloc(cm1->nrows, cm1->ncols); |
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if (cmr == NULL) |
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return(NULL); |
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for (dr = 0; dr < cmr->nrows; dr++) |
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for (dc = 0; dc < cmr->ncols; dc++) { |
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const COLORV *sp = cm_lval(cm1,dr,dc); |
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COLORV *dp = cm_lval(cmr,dr,dc); |
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dp[0] = sp[0] * sca[0]; |
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dp[1] = sp[1] * sca[1]; |
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dp[2] = sp[2] * sca[2]; |
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} |
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return(cmr); |
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} |
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|
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/* Multiply two matrices (or a matrix and a vector) and allocate the result */ |
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static CMATRIX * |
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cm_multiply(const CMATRIX *cm1, const CMATRIX *cm2) |
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{ |
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CMATRIX *cmr; |
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} |
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} |
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|
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< |
/* convert a BSDF to our matrix representation */ |
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> |
/* Convert a BSDF to our matrix representation */ |
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static CMATRIX * |
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cm_bsdf(const struct BSDF_data *bsdf) |
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cm_bsdf(const COLOR bsdfLamb, const COLOR specCol, const SDMat *bsdf) |
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{ |
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CMATRIX *cm = cm_alloc(bsdf->nout, bsdf->ninc); |
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int nbadohm = 0; |
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int nneg = 0; |
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int r, c; |
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|
| 325 |
> |
/* reciprocity is "transparent" */ |
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for (c = 0; c < cm->ncols; c++) { |
| 327 |
< |
float dom = getBSDF_incohm(bsdf,c); |
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FVECT v; |
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< |
|
| 307 |
< |
if (dom <= .0) { |
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< |
nbadohm++; |
| 309 |
< |
continue; |
| 310 |
< |
} |
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< |
if (!getBSDF_incvec(v,bsdf,c) || v[2] > FTINY) |
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error(USER, "illegal incoming BTDF direction"); |
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dom *= -v[2]; |
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> |
const double dom = mBSDF_incohm(bsdf,c); |
| 328 |
> |
/* projected solid angle */ |
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> |
nbadohm += (dom <= 0); |
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|
| 331 |
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for (r = 0; r < cm->nrows; r++) { |
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< |
float f = BSDF_value(bsdf,c,r); |
| 332 |
> |
float f = mBSDF_value(bsdf,c,r); |
| 333 |
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COLORV *mp = cm_lval(cm,r,c); |
| 334 |
< |
|
| 335 |
< |
if (f <= .0) { |
| 334 |
> |
/* check BSDF value */ |
| 335 |
> |
if ((f <= 0) | (dom <= 0)) { |
| 336 |
|
nneg += (f < -FTINY); |
| 337 |
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f = .0f; |
| 338 |
|
} |
| 339 |
< |
mp[0] = mp[1] = mp[2] = f * dom; |
| 339 |
> |
copycolor(mp, specCol); |
| 340 |
> |
scalecolor(mp, f); |
| 341 |
> |
addcolor(mp, bsdfLamb); |
| 342 |
> |
scalecolor(mp, dom); |
| 343 |
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} |
| 344 |
|
} |
| 345 |
< |
if (nneg || nbadohm) { |
| 345 |
> |
if (nneg | nbadohm) { |
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sprintf(errmsg, |
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"BTDF has %d negatives and %d bad incoming solid angles", |
| 348 |
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nneg, nbadohm); |
| 351 |
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return(cm); |
| 352 |
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} |
| 353 |
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|
| 354 |
+ |
/* Load and convert a matrix BSDF from the given XML file */ |
| 355 |
+ |
static CMATRIX * |
| 356 |
+ |
cm_loadBSDF(char *fname, COLOR cLamb) |
| 357 |
+ |
{ |
| 358 |
+ |
CMATRIX *Tmat; |
| 359 |
+ |
char *fpath; |
| 360 |
+ |
SDError ec; |
| 361 |
+ |
SDData myBSDF; |
| 362 |
+ |
SDSpectralDF *tdf; |
| 363 |
+ |
COLOR bsdfLamb, specCol; |
| 364 |
+ |
/* find path to BSDF file */ |
| 365 |
+ |
fpath = getpath(fname, getrlibpath(), R_OK); |
| 366 |
+ |
if (fpath == NULL) { |
| 367 |
+ |
sprintf(errmsg, "cannot find BSDF file '%s'", fname); |
| 368 |
+ |
error(USER, errmsg); |
| 369 |
+ |
} |
| 370 |
+ |
SDclearBSDF(&myBSDF, fname); /* load XML and check type */ |
| 371 |
+ |
ec = SDloadFile(&myBSDF, fpath); |
| 372 |
+ |
if (ec) |
| 373 |
+ |
error(USER, transSDError(ec)); |
| 374 |
+ |
ccy2rgb(&myBSDF.tLamb.spec, myBSDF.tLamb.cieY/PI, bsdfLamb); |
| 375 |
+ |
tdf = (myBSDF.tf != NULL) ? myBSDF.tf : myBSDF.tb; |
| 376 |
+ |
if (tdf == NULL) { /* no non-Lambertian transmission? */ |
| 377 |
+ |
if (cLamb != NULL) |
| 378 |
+ |
copycolor(cLamb, bsdfLamb); |
| 379 |
+ |
SDfreeBSDF(&myBSDF); |
| 380 |
+ |
return(NULL); |
| 381 |
+ |
} |
| 382 |
+ |
if (tdf->ncomp != 1 || tdf->comp[0].func != &SDhandleMtx) { |
| 383 |
+ |
sprintf(errmsg, "unsupported BSDF '%s'", fpath); |
| 384 |
+ |
error(USER, errmsg); |
| 385 |
+ |
} |
| 386 |
+ |
/* convert BTDF to matrix */ |
| 387 |
+ |
ccy2rgb(&tdf->comp[0].cspec[0], 1., specCol); |
| 388 |
+ |
Tmat = cm_bsdf(bsdfLamb, specCol, (SDMat *)tdf->comp[0].dist); |
| 389 |
+ |
if (cLamb != NULL) /* Lambertian is included */ |
| 390 |
+ |
setcolor(cLamb, .0, .0, .0); |
| 391 |
+ |
/* free BSDF and return */ |
| 392 |
+ |
SDfreeBSDF(&myBSDF); |
| 393 |
+ |
return(Tmat); |
| 394 |
+ |
} |
| 395 |
+ |
|
| 396 |
|
/* Sum together a set of images and write result to stdout */ |
| 397 |
|
static int |
| 398 |
|
sum_images(const char *fspec, const CMATRIX *cv, FILE *fout) |
| 412 |
|
int dt, xr, yr; |
| 413 |
|
COLORV *psp; |
| 414 |
|
/* check for zero */ |
| 415 |
< |
if ((scv[RED] == .0) & (scv[GRN] == .0) & (scv[BLU] == .0)) |
| 415 |
> |
if ((scv[RED] == 0) & (scv[GRN] == 0) & (scv[BLU] == 0) && |
| 416 |
> |
(myDT != DTfromHeader) | (i < cv->nrows-1)) |
| 417 |
|
continue; |
| 418 |
|
/* open next picture */ |
| 419 |
|
sprintf(fname, fspec, i); |
| 475 |
|
static int |
| 476 |
|
hasNumberFormat(const char *s) |
| 477 |
|
{ |
| 478 |
< |
while (*s && *s != '%') |
| 479 |
< |
s++; |
| 480 |
< |
if (!*s) |
| 481 |
< |
return(0); |
| 482 |
< |
do |
| 483 |
< |
++s; |
| 484 |
< |
while (isdigit(*s)); |
| 485 |
< |
|
| 486 |
< |
return(*s == 'd' | *s == 'i' | *s == 'o' | *s == 'x' | *s == 'X'); |
| 478 |
> |
while (*s) { |
| 479 |
> |
while (*s != '%') |
| 480 |
> |
if (!*s++) |
| 481 |
> |
return(0); |
| 482 |
> |
if (*++s == '%') { /* ignore "%%" */ |
| 483 |
> |
++s; |
| 484 |
> |
continue; |
| 485 |
> |
} |
| 486 |
> |
while (isdigit(*s)) /* field length */ |
| 487 |
> |
++s; |
| 488 |
> |
/* field we'll use? */ |
| 489 |
> |
if ((*s == 'd') | (*s == 'i') | (*s == 'o') | |
| 490 |
> |
(*s == 'x') | (*s == 'X')) |
| 491 |
> |
return(1); |
| 492 |
> |
} |
| 493 |
> |
return(0); /* didn't find one */ |
| 494 |
|
} |
| 495 |
|
|
| 496 |
|
int |
| 497 |
|
main(int argc, char *argv[]) |
| 498 |
|
{ |
| 499 |
< |
CMATRIX *cvec; |
| 499 |
> |
CMATRIX *cvec; /* component vector result */ |
| 500 |
|
|
| 501 |
|
progname = argv[0]; |
| 502 |
|
|
| 509 |
|
|
| 510 |
|
if (argc > 3) { /* VTDs expression */ |
| 511 |
|
CMATRIX *svec, *Dmat, *Tmat, *ivec; |
| 512 |
< |
struct BSDF_data *btdf; |
| 512 |
> |
COLOR tLamb; |
| 513 |
|
/* get sky vector */ |
| 514 |
|
svec = cm_load(argv[4], 0, 1, DTascii); |
| 515 |
|
/* load BSDF */ |
| 516 |
< |
btdf = load_BSDF(argv[2]); |
| 448 |
< |
if (btdf == NULL) |
| 449 |
< |
return(1); |
| 516 |
> |
Tmat = cm_loadBSDF(argv[2], tLamb); |
| 517 |
|
/* load Daylight matrix */ |
| 518 |
< |
Dmat = cm_load(argv[3], btdf->ninc, svec->nrows, DTfromHeader); |
| 518 |
> |
Dmat = cm_load(argv[3], Tmat==NULL ? 0 : Tmat->ncols, |
| 519 |
> |
svec->nrows, DTfromHeader); |
| 520 |
|
/* multiply vector through */ |
| 521 |
|
ivec = cm_multiply(Dmat, svec); |
| 522 |
|
cm_free(Dmat); cm_free(svec); |
| 523 |
< |
Tmat = cm_bsdf(btdf); /* convert BTDF to matrix */ |
| 524 |
< |
free_BSDF(btdf); |
| 525 |
< |
cvec = cm_multiply(Tmat, ivec); /* cvec = component vector */ |
| 526 |
< |
cm_free(Tmat); cm_free(ivec); |
| 523 |
> |
if (Tmat == NULL) { /* diffuse only */ |
| 524 |
> |
cvec = cm_scale(ivec, tLamb); |
| 525 |
> |
} else { /* else apply BTDF matrix */ |
| 526 |
> |
cvec = cm_multiply(Tmat, ivec); |
| 527 |
> |
cm_free(Tmat); |
| 528 |
> |
} |
| 529 |
> |
cm_free(ivec); |
| 530 |
|
} else { /* else just use sky vector */ |
| 531 |
|
cvec = cm_load(argv[2], 0, 1, DTascii); |
| 532 |
|
} |