17 |
|
#include "calcomp.h" |
18 |
|
#include "bsdfrep.h" |
19 |
|
#include "bsdf_m.h" |
20 |
+ |
/* assumed maximum # Klems patches */ |
21 |
+ |
#define MAXPATCHES 145 |
22 |
|
/* global argv[0] */ |
23 |
|
char *progname; |
24 |
|
/* selected basis function name */ |
25 |
|
static const char *kbasis = "LBNL/Klems Full"; |
26 |
|
/* number of BSDF samples per patch */ |
27 |
|
static int npsamps = 256; |
28 |
+ |
/* limit on number of RBF lobes */ |
29 |
+ |
static int lobe_lim = 15000; |
30 |
+ |
/* progress bar length */ |
31 |
+ |
static int do_prog = 79; |
32 |
|
|
33 |
+ |
|
34 |
+ |
/* Start new progress bar */ |
35 |
+ |
#define prog_start(s) if (do_prog) fprintf(stderr, "%s: %s...\n", progname, s); else |
36 |
+ |
|
37 |
+ |
/* Draw progress bar of the appropriate length */ |
38 |
+ |
static void |
39 |
+ |
prog_show(double frac) |
40 |
+ |
{ |
41 |
+ |
char pbar[256]; |
42 |
+ |
int nchars; |
43 |
+ |
|
44 |
+ |
if (do_prog <= 0) return; |
45 |
+ |
if (do_prog > sizeof(pbar)-2) |
46 |
+ |
do_prog = sizeof(pbar)-2; |
47 |
+ |
if (frac < 0) frac = 0; |
48 |
+ |
else if (frac > 1) frac = 1; |
49 |
+ |
nchars = do_prog*frac + .5; |
50 |
+ |
pbar[0] = '\r'; |
51 |
+ |
memset(pbar+1, '*', nchars); |
52 |
+ |
memset(pbar+1+nchars, '-', do_prog-nchars); |
53 |
+ |
pbar[do_prog+1] = '\0'; |
54 |
+ |
fputs(pbar, stderr); |
55 |
+ |
} |
56 |
+ |
|
57 |
+ |
/* Finish progress bar */ |
58 |
+ |
#define prog_done() if (do_prog) fputc('\n',stderr); else |
59 |
+ |
|
60 |
|
/* Return angle basis corresponding to the given name */ |
61 |
< |
ANGLE_BASIS * |
61 |
> |
static ANGLE_BASIS * |
62 |
|
get_basis(const char *bn) |
63 |
|
{ |
64 |
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int n = nabases; |
87 |
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static void |
88 |
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xml_prologue(const SDData *sd) |
89 |
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{ |
90 |
< |
const char *matn = (sd && sd->matn[0]) ? sd->matn : "Name"; |
91 |
< |
const char *makr = (sd && sd->makr[0]) ? sd->makr : "Manufacturer"; |
90 |
> |
const char *matn = (sd && sd->matn[0]) ? sd->matn : |
91 |
> |
bsdf_name[0] ? bsdf_name : "Unknown"; |
92 |
> |
const char *makr = (sd && sd->makr[0]) ? sd->makr : |
93 |
> |
bsdf_manuf[0] ? bsdf_manuf : "Unknown"; |
94 |
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ANGLE_BASIS *abp = get_basis(kbasis); |
95 |
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int i; |
96 |
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|
207 |
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sum = 0; /* average over patches */ |
208 |
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for (n = npsamps; n-- > 0; ) { |
209 |
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fo_getvec(vout, j+(n+frandom())/npsamps, abp); |
210 |
< |
fi_getvec(vin, i+(n+frandom())/npsamps, abp); |
210 |
> |
fi_getvec(vin, i+urand(n), abp); |
211 |
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ec = SDevalBSDF(&sv, vout, vin, &bsd); |
212 |
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if (ec != SDEnone) |
213 |
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goto err; |
228 |
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sum = 0; /* average over patches */ |
229 |
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for (n = npsamps; n-- > 0; ) { |
230 |
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bo_getvec(vout, j+(n+frandom())/npsamps, abp); |
231 |
< |
bi_getvec(vin, i+(n+frandom())/npsamps, abp); |
231 |
> |
bi_getvec(vin, i+urand(n), abp); |
232 |
|
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
233 |
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if (ec != SDEnone) |
234 |
|
goto err; |
249 |
|
sum = 0; /* average over patches */ |
250 |
|
for (n = npsamps; n-- > 0; ) { |
251 |
|
bo_getvec(vout, j+(n+frandom())/npsamps, abp); |
252 |
< |
fi_getvec(vin, i+(n+frandom())/npsamps, abp); |
252 |
> |
fi_getvec(vin, i+urand(n), abp); |
253 |
|
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
254 |
|
if (ec != SDEnone) |
255 |
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goto err; |
262 |
|
data_epilogue(); |
263 |
|
} |
264 |
|
/* back transmission */ |
265 |
< |
if (bsd.tb != NULL) { |
265 |
> |
if ((bsd.tb != NULL) | (bsd.tf != NULL)) { |
266 |
|
input_orient = -1; output_orient = 1; |
267 |
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data_prologue(); |
268 |
|
for (j = 0; j < abp->nangles; j++) { |
269 |
|
for (i = 0; i < abp->nangles; i++) { |
270 |
< |
sum = 0; /* average over patches */ |
270 |
> |
sum = 0; /* average over patches */ |
271 |
|
for (n = npsamps; n-- > 0; ) { |
272 |
|
fo_getvec(vout, j+(n+frandom())/npsamps, abp); |
273 |
< |
bi_getvec(vin, i+(n+frandom())/npsamps, abp); |
273 |
> |
bi_getvec(vin, i+urand(n), abp); |
274 |
|
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
275 |
|
if (ec != SDEnone) |
276 |
|
goto err; |
294 |
|
eval_function(char *funame) |
295 |
|
{ |
296 |
|
ANGLE_BASIS *abp = get_basis(kbasis); |
297 |
+ |
int assignD = (fundefined(funame) < 6); |
298 |
|
double iovec[6]; |
299 |
|
double sum; |
300 |
|
int i, j, n; |
301 |
|
|
302 |
+ |
initurand(npsamps); |
303 |
|
data_prologue(); /* begin output */ |
304 |
|
for (j = 0; j < abp->nangles; j++) { /* run through directions */ |
305 |
|
for (i = 0; i < abp->nangles; i++) { |
311 |
|
bo_getvec(iovec+3, j+(n+frandom())/npsamps, abp); |
312 |
|
|
313 |
|
if (input_orient > 0) |
314 |
< |
fi_getvec(iovec, i+(n+frandom())/npsamps, abp); |
314 |
> |
fi_getvec(iovec, i+urand(n), abp); |
315 |
|
else |
316 |
< |
bi_getvec(iovec, i+(n+frandom())/npsamps, abp); |
316 |
> |
bi_getvec(iovec, i+urand(n), abp); |
317 |
|
|
318 |
+ |
if (assignD) { |
319 |
+ |
varset("Dx", '=', -iovec[3]); |
320 |
+ |
varset("Dy", '=', -iovec[4]); |
321 |
+ |
varset("Dz", '=', -iovec[5]); |
322 |
+ |
++eclock; |
323 |
+ |
} |
324 |
|
sum += funvalue(funame, 6, iovec); |
325 |
|
} |
326 |
|
printf("\t%.3e\n", sum/npsamps); |
327 |
|
} |
328 |
|
putchar('\n'); |
329 |
+ |
prog_show((j+1.)/abp->nangles); |
330 |
|
} |
331 |
|
data_epilogue(); /* finish output */ |
332 |
+ |
prog_done(); |
333 |
|
} |
334 |
|
|
335 |
|
/* Interpolate and output a radial basis function BSDF representation */ |
336 |
|
static void |
337 |
|
eval_rbf(void) |
338 |
|
{ |
294 |
– |
#define MAXPATCHES 145 |
339 |
|
ANGLE_BASIS *abp = get_basis(kbasis); |
340 |
|
float bsdfarr[MAXPATCHES*MAXPATCHES]; |
341 |
|
FVECT vin, vout; |
354 |
|
else |
355 |
|
bi_getvec(vin, i+.5*(i>0), abp); |
356 |
|
|
357 |
< |
rbf = advect_rbf(vin); /* compute radial basis func */ |
357 |
> |
rbf = advect_rbf(vin, lobe_lim); /* compute radial basis func */ |
358 |
|
|
359 |
|
for (j = 0; j < abp->nangles; j++) { |
360 |
|
sum = 0; /* sample over exiting patch */ |
364 |
|
else |
365 |
|
bo_getvec(vout, j+(n+frandom())/npsamps, abp); |
366 |
|
|
367 |
< |
sum += eval_rbfrep(rbf, vout) / vout[2]; |
367 |
> |
sum += eval_rbfrep(rbf, vout); |
368 |
|
} |
369 |
< |
bsdfarr[j*abp->nangles + i] = sum*output_orient/npsamps; |
369 |
> |
fo_getvec(vout, j+.5, abp); /* use centered secant */ |
370 |
> |
bsdfarr[j*abp->nangles + i] = sum / (npsamps*vout[2]); |
371 |
|
} |
372 |
+ |
if (rbf != NULL) |
373 |
+ |
free(rbf); |
374 |
+ |
prog_show((i+1.)/abp->nangles); |
375 |
|
} |
376 |
|
n = 0; /* write out our matrix */ |
377 |
|
for (j = 0; j < abp->nangles; j++) { |
380 |
|
putchar('\n'); |
381 |
|
} |
382 |
|
data_epilogue(); /* finish output */ |
383 |
< |
#undef MAXPATCHES |
383 |
> |
prog_done(); |
384 |
|
} |
385 |
|
|
386 |
|
/* Read in BSDF and interpolate as Klems matrix representation */ |
423 |
|
case 'q': |
424 |
|
kbasis = "LBNL/Klems Quarter"; |
425 |
|
break; |
426 |
+ |
case 'l': |
427 |
+ |
lobe_lim = atoi(argv[++i]); |
428 |
+ |
break; |
429 |
+ |
case 'p': |
430 |
+ |
do_prog = atoi(argv[i]+2); |
431 |
+ |
break; |
432 |
|
default: |
433 |
|
goto userr; |
434 |
|
} |
437 |
|
fprintf(stderr, |
438 |
|
"%s: need single function with 6 arguments: bsdf(ix,iy,iz,ox,oy,oz)\n", |
439 |
|
progname); |
440 |
+ |
fprintf(stderr, "\tor 3 arguments using Dx,Dy,Dz: bsdf(ix,iy,iz)\n"); |
441 |
|
goto userr; |
442 |
|
} |
443 |
+ |
++eclock; |
444 |
|
xml_header(argc, argv); /* start XML output */ |
445 |
|
xml_prologue(NULL); |
446 |
|
if (dofwd) { |
447 |
|
input_orient = -1; |
448 |
|
output_orient = -1; |
449 |
< |
eval_function(argv[i]); /* outside reflectance */ |
449 |
> |
prog_start("Evaluating outside reflectance"); |
450 |
> |
eval_function(argv[i]); |
451 |
|
output_orient = 1; |
452 |
< |
eval_function(argv[i]); /* outside -> inside */ |
452 |
> |
prog_start("Evaluating outside->inside transmission"); |
453 |
> |
eval_function(argv[i]); |
454 |
|
} |
455 |
|
if (dobwd) { |
456 |
|
input_orient = 1; |
457 |
|
output_orient = 1; |
458 |
< |
eval_function(argv[i]); /* inside reflectance */ |
458 |
> |
prog_start("Evaluating inside reflectance"); |
459 |
> |
eval_function(argv[i]); |
460 |
|
output_orient = -1; |
461 |
< |
eval_function(argv[i]); /* inside -> outside */ |
461 |
> |
prog_start("Evaluating inside->outside transmission"); |
462 |
> |
eval_function(argv[i]); |
463 |
|
} |
464 |
|
xml_epilogue(); /* finish XML output & exit */ |
465 |
|
return(0); |
475 |
|
if (i < argc) { /* open input files if given */ |
476 |
|
int nbsdf = 0; |
477 |
|
for ( ; i < argc; i++) { /* interpolate each component */ |
478 |
+ |
char pbuf[256]; |
479 |
|
FILE *fpin = fopen(argv[i], "rb"); |
480 |
|
if (fpin == NULL) { |
481 |
|
fprintf(stderr, "%s: cannot open BSDF interpolant '%s'\n", |
489 |
|
xml_header(argc, argv); |
490 |
|
xml_prologue(NULL); |
491 |
|
} |
492 |
+ |
sprintf(pbuf, "Interpolating component '%s'", argv[i]); |
493 |
+ |
prog_start(pbuf); |
494 |
|
eval_rbf(); |
495 |
|
} |
496 |
|
xml_epilogue(); /* finish XML output & exit */ |
501 |
|
return(1); |
502 |
|
xml_header(argc, argv); /* start XML output */ |
503 |
|
xml_prologue(NULL); |
504 |
+ |
prog_start("Interpolating from standard input"); |
505 |
|
eval_rbf(); /* resample dist. */ |
506 |
|
xml_epilogue(); /* finish XML output & exit */ |
507 |
|
return(0); |
508 |
|
userr: |
509 |
|
fprintf(stderr, |
510 |
< |
"Usage: %s [-n spp][-h|-q][bsdf.sir ..] > bsdf.xml\n", progname); |
510 |
> |
"Usage: %s [-n spp][-h|-q][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", progname); |
511 |
|
fprintf(stderr, |
512 |
|
" or: %s [-n spp][-h|-q] bsdf_in.xml > bsdf_out.xml\n", progname); |
513 |
|
fprintf(stderr, |