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 |
|
int n = nabases; |
69 |
|
return NULL; |
70 |
|
} |
71 |
|
|
72 |
< |
/* Output XML prologue to stdout */ |
72 |
> |
/* Output XML header to stdout */ |
73 |
|
static void |
74 |
< |
xml_prologue(int ac, char *av[]) |
74 |
> |
xml_header(int ac, char *av[]) |
75 |
|
{ |
43 |
– |
ANGLE_BASIS *abp = get_basis(kbasis); |
44 |
– |
int i; |
45 |
– |
|
46 |
– |
if (abp == NULL) { |
47 |
– |
fprintf(stderr, "%s: unknown angle basis '%s'\n", progname, kbasis); |
48 |
– |
exit(1); |
49 |
– |
} |
76 |
|
puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); |
77 |
|
puts("<WindowElement xmlns=\"http://windows.lbl.gov\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://windows.lbl.gov/BSDF-v1.4.xsd\">"); |
78 |
|
fputs("<!-- File produced by:", stdout); |
81 |
|
fputs(*av++, stdout); |
82 |
|
} |
83 |
|
puts(" -->"); |
84 |
+ |
} |
85 |
+ |
|
86 |
+ |
/* Output XML prologue to stdout */ |
87 |
+ |
static void |
88 |
+ |
xml_prologue(const SDData *sd) |
89 |
+ |
{ |
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 |
+ |
ANGLE_BASIS *abp = get_basis(kbasis); |
95 |
+ |
int i; |
96 |
+ |
|
97 |
+ |
if (abp == NULL) { |
98 |
+ |
fprintf(stderr, "%s: unknown angle basis '%s'\n", progname, kbasis); |
99 |
+ |
exit(1); |
100 |
+ |
} |
101 |
|
puts("<WindowElementType>System</WindowElementType>"); |
102 |
|
puts("<FileType>BSDF</FileType>"); |
103 |
|
puts("<Optical>"); |
104 |
|
puts("<Layer>"); |
105 |
|
puts("\t<Material>"); |
106 |
< |
puts("\t\t<Name>Name</Name>"); |
107 |
< |
puts("\t\t<Manufacturer>Manufacturer</Manufacturer>"); |
106 |
> |
printf("\t\t<Name>%s</Name>\n", matn); |
107 |
> |
printf("\t\t<Manufacturer>%s</Manufacturer>\n", makr); |
108 |
> |
if (sd && sd->dim[2] > .001) { |
109 |
> |
printf("\t\t<Thickness unit=\"meter\">%.3f</Thickness>\n", sd->dim[2]); |
110 |
> |
printf("\t\t<Width unit=\"meter\">%.3f</Width>\n", sd->dim[0]); |
111 |
> |
printf("\t\t<Height unit=\"meter\">%.3f</Height>\n", sd->dim[1]); |
112 |
> |
} |
113 |
|
puts("\t\t<DeviceType>Other</DeviceType>"); |
114 |
|
puts("\t</Material>"); |
115 |
+ |
if (sd && sd->mgf != NULL) { |
116 |
+ |
puts("\t<Geometry format=\"MGF\">"); |
117 |
+ |
puts("\t\t<MGFblock unit=\"meter\">"); |
118 |
+ |
fputs(sd->mgf, stdout); |
119 |
+ |
puts("</MGFblock>"); |
120 |
+ |
puts("\t</Geometry>"); |
121 |
+ |
} |
122 |
|
puts("\t<DataDefinition>"); |
123 |
|
puts("\t\t<IncidentDataStructure>Columns</IncidentDataStructure>"); |
124 |
|
puts("\t\t<AngleBasis>"); |
128 |
|
printf("\t\t\t<Theta>%g</Theta>\n", i ? |
129 |
|
.5*(abp->lat[i].tmin + abp->lat[i+1].tmin) : |
130 |
|
.0 ); |
131 |
< |
printf("\t\t\t<nPhis>%d</nPhis>", abp->lat[i].nphis); |
131 |
> |
printf("\t\t\t<nPhis>%d</nPhis>\n", abp->lat[i].nphis); |
132 |
|
puts("\t\t\t<ThetaBounds>"); |
133 |
|
printf("\t\t\t\t<LowerTheta>%g</LowerTheta>\n", abp->lat[i].tmin); |
134 |
|
printf("\t\t\t\t<UpperTheta>%g</UpperTheta>\n", abp->lat[i+1].tmin); |
182 |
|
puts("</WindowElement>"); |
183 |
|
} |
184 |
|
|
185 |
< |
/* Load and resample XML BSDF description */ |
185 |
> |
/* Load and resample XML BSDF description using Klems basis */ |
186 |
|
static void |
187 |
|
eval_bsdf(const char *fname) |
188 |
|
{ |
197 |
|
SDclearBSDF(&bsd, fname); /* load BSDF file */ |
198 |
|
if ((ec = SDloadFile(&bsd, fname)) != SDEnone) |
199 |
|
goto err; |
200 |
+ |
xml_prologue(&bsd); /* pass geometry */ |
201 |
|
/* front reflection */ |
202 |
|
if (bsd.rf != NULL || bsd.rLambFront.cieY > .002) { |
203 |
|
input_orient = 1; output_orient = 1; |
207 |
|
sum = 0; /* average over patches */ |
208 |
|
for (n = npsamps; n-- > 0; ) { |
209 |
|
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 |
|
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
212 |
|
if (ec != SDEnone) |
213 |
|
goto err; |
228 |
|
sum = 0; /* average over patches */ |
229 |
|
for (n = npsamps; n-- > 0; ) { |
230 |
|
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 |
|
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 |
|
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 |
|
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; |
289 |
|
exit(1); |
290 |
|
} |
291 |
|
|
292 |
< |
/* Interpolate and output a BSDF function */ |
292 |
> |
/* Interpolate and output a BSDF function using Klems basis */ |
293 |
|
static void |
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, j+(n+frandom())/npsamps, abp); |
314 |
> |
fi_getvec(iovec, i+urand(n), abp); |
315 |
|
else |
316 |
< |
bi_getvec(iovec, j+(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 */ |
337 |
|
eval_rbf(void) |
338 |
|
{ |
339 |
|
ANGLE_BASIS *abp = get_basis(kbasis); |
340 |
< |
double iovec[6]; |
340 |
> |
float bsdfarr[MAXPATCHES*MAXPATCHES]; |
341 |
> |
FVECT vin, vout; |
342 |
> |
RBFNODE *rbf; |
343 |
|
double sum; |
344 |
|
int i, j, n; |
345 |
+ |
/* sanity check */ |
346 |
+ |
if (abp->nangles > MAXPATCHES) { |
347 |
+ |
fprintf(stderr, "%s: too many patches!\n", progname); |
348 |
+ |
exit(1); |
349 |
+ |
} |
350 |
+ |
data_prologue(); /* begin output */ |
351 |
+ |
for (i = 0; i < abp->nangles; i++) { |
352 |
+ |
if (input_orient > 0) /* use incident patch center */ |
353 |
+ |
fi_getvec(vin, i+.5*(i>0), abp); |
354 |
+ |
else |
355 |
+ |
bi_getvec(vin, i+.5*(i>0), abp); |
356 |
|
|
357 |
< |
fprintf(stder, "%s: RBF evaluation currently unimplemented\n", progname); |
358 |
< |
exit(1); |
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 */ |
361 |
> |
for (n = npsamps; n--; ) { |
362 |
> |
if (output_orient > 0) |
363 |
> |
fo_getvec(vout, j+(n+frandom())/npsamps, abp); |
364 |
> |
else |
365 |
> |
bo_getvec(vout, j+(n+frandom())/npsamps, abp); |
366 |
> |
|
367 |
> |
sum += eval_rbfrep(rbf, vout); |
368 |
> |
} |
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++) { |
378 |
> |
for (i = 0; i < abp->nangles; i++) |
379 |
> |
printf("\t%.3e\n", bsdfarr[n++]); |
380 |
> |
putchar('\n'); |
381 |
> |
} |
382 |
> |
data_epilogue(); /* finish output */ |
383 |
> |
prog_done(); |
384 |
|
} |
385 |
|
|
386 |
|
/* Read in BSDF and interpolate as Klems matrix representation */ |
396 |
|
esupport &= ~(E_INCHAN|E_OUTCHAN); |
397 |
|
scompile("PI:3.14159265358979323846", NULL, 0); |
398 |
|
biggerlib(); |
399 |
< |
for (i = 1; i < argc-1 && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) |
399 |
> |
for (i = 1; i < argc && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) |
400 |
|
switch (argv[i][1]) { /* get options */ |
401 |
|
case 'n': |
402 |
|
npsamps = atoi(argv[++i]); |
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 |
< |
xml_prologue(argc, argv); /* start XML output */ |
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); |
466 |
|
} |
467 |
< |
if (i == argc-1 && (cp = strstr(argv[i], ".xml")) != NULL && |
468 |
< |
strlen(cp) == 4) { /* XML input? */ |
469 |
< |
xml_prologue(argc, argv); /* start XML output */ |
467 |
> |
/* XML input? */ |
468 |
> |
if (i == argc-1 && (cp = argv[i]+strlen(argv[i])-4) > argv[i] && |
469 |
> |
!strcasecmp(cp, ".xml")) { |
470 |
> |
xml_header(argc, argv); /* start XML output */ |
471 |
|
eval_bsdf(argv[i]); /* load & resample BSDF */ |
472 |
|
xml_epilogue(); /* finish XML output & exit */ |
473 |
|
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", |
485 |
|
if (!load_bsdf_rep(fpin)) |
486 |
|
return(1); |
487 |
|
fclose(fpin); |
488 |
< |
if (!nbsdf++) /* start XML on first dist. */ |
489 |
< |
xml_prologue(argc, argv); |
488 |
> |
if (!nbsdf++) { /* start XML on first dist. */ |
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 */ |
499 |
|
SET_FILE_BINARY(stdin); /* load from stdin */ |
500 |
|
if (!load_bsdf_rep(stdin)) |
501 |
|
return(1); |
502 |
< |
xml_prologue(argc, argv); /* start XML output */ |
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", |
386 |
< |
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", |
389 |
< |
progname); |
512 |
> |
" or: %s [-n spp][-h|-q] bsdf_in.xml > bsdf_out.xml\n", progname); |
513 |
|
fprintf(stderr, |
514 |
|
" or: %s [-n spp][-h|-q][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", |
515 |
|
progname); |