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 |
|
|
31 |
|
/* Return angle basis corresponding to the given name */ |
32 |
|
ANGLE_BASIS * |
40 |
|
return NULL; |
41 |
|
} |
42 |
|
|
43 |
< |
/* Output XML prologue to stdout */ |
43 |
> |
/* Output XML header to stdout */ |
44 |
|
static void |
45 |
< |
xml_prologue(int ac, char *av[]) |
45 |
> |
xml_header(int ac, char *av[]) |
46 |
|
{ |
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 |
– |
} |
47 |
|
puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); |
48 |
|
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\">"); |
49 |
|
fputs("<!-- File produced by:", stdout); |
52 |
|
fputs(*av++, stdout); |
53 |
|
} |
54 |
|
puts(" -->"); |
55 |
+ |
} |
56 |
+ |
|
57 |
+ |
/* Output XML prologue to stdout */ |
58 |
+ |
static void |
59 |
+ |
xml_prologue(const SDData *sd) |
60 |
+ |
{ |
61 |
+ |
const char *matn = (sd && sd->matn[0]) ? sd->matn : |
62 |
+ |
bsdf_name[0] ? bsdf_name : "Unknown"; |
63 |
+ |
const char *makr = (sd && sd->makr[0]) ? sd->makr : |
64 |
+ |
bsdf_manuf[0] ? bsdf_manuf : "Unknown"; |
65 |
+ |
ANGLE_BASIS *abp = get_basis(kbasis); |
66 |
+ |
int i; |
67 |
+ |
|
68 |
+ |
if (abp == NULL) { |
69 |
+ |
fprintf(stderr, "%s: unknown angle basis '%s'\n", progname, kbasis); |
70 |
+ |
exit(1); |
71 |
+ |
} |
72 |
|
puts("<WindowElementType>System</WindowElementType>"); |
73 |
|
puts("<FileType>BSDF</FileType>"); |
74 |
|
puts("<Optical>"); |
75 |
|
puts("<Layer>"); |
76 |
|
puts("\t<Material>"); |
77 |
< |
puts("\t\t<Name>Name</Name>"); |
78 |
< |
puts("\t\t<Manufacturer>Manufacturer</Manufacturer>"); |
77 |
> |
printf("\t\t<Name>%s</Name>\n", matn); |
78 |
> |
printf("\t\t<Manufacturer>%s</Manufacturer>\n", makr); |
79 |
> |
if (sd && sd->dim[2] > .001) { |
80 |
> |
printf("\t\t<Thickness unit=\"meter\">%.3f</Thickness>\n", sd->dim[2]); |
81 |
> |
printf("\t\t<Width unit=\"meter\">%.3f</Width>\n", sd->dim[0]); |
82 |
> |
printf("\t\t<Height unit=\"meter\">%.3f</Height>\n", sd->dim[1]); |
83 |
> |
} |
84 |
|
puts("\t\t<DeviceType>Other</DeviceType>"); |
85 |
|
puts("\t</Material>"); |
86 |
+ |
if (sd && sd->mgf != NULL) { |
87 |
+ |
puts("\t<Geometry format=\"MGF\">"); |
88 |
+ |
puts("\t\t<MGFblock unit=\"meter\">"); |
89 |
+ |
fputs(sd->mgf, stdout); |
90 |
+ |
puts("</MGFblock>"); |
91 |
+ |
puts("\t</Geometry>"); |
92 |
+ |
} |
93 |
|
puts("\t<DataDefinition>"); |
94 |
|
puts("\t\t<IncidentDataStructure>Columns</IncidentDataStructure>"); |
95 |
|
puts("\t\t<AngleBasis>"); |
99 |
|
printf("\t\t\t<Theta>%g</Theta>\n", i ? |
100 |
|
.5*(abp->lat[i].tmin + abp->lat[i+1].tmin) : |
101 |
|
.0 ); |
102 |
< |
printf("\t\t\t<nPhis>%d</nPhis>", abp->lat[i].nphis); |
102 |
> |
printf("\t\t\t<nPhis>%d</nPhis>\n", abp->lat[i].nphis); |
103 |
|
puts("\t\t\t<ThetaBounds>"); |
104 |
|
printf("\t\t\t\t<LowerTheta>%g</LowerTheta>\n", abp->lat[i].tmin); |
105 |
|
printf("\t\t\t\t<UpperTheta>%g</UpperTheta>\n", abp->lat[i+1].tmin); |
153 |
|
puts("</WindowElement>"); |
154 |
|
} |
155 |
|
|
156 |
< |
/* Load and resample XML BSDF description */ |
156 |
> |
/* Load and resample XML BSDF description using Klems basis */ |
157 |
|
static void |
158 |
|
eval_bsdf(const char *fname) |
159 |
|
{ |
168 |
|
SDclearBSDF(&bsd, fname); /* load BSDF file */ |
169 |
|
if ((ec = SDloadFile(&bsd, fname)) != SDEnone) |
170 |
|
goto err; |
171 |
+ |
xml_prologue(&bsd); /* pass geometry */ |
172 |
|
/* front reflection */ |
173 |
|
if (bsd.rf != NULL || bsd.rLambFront.cieY > .002) { |
174 |
|
input_orient = 1; output_orient = 1; |
178 |
|
sum = 0; /* average over patches */ |
179 |
|
for (n = npsamps; n-- > 0; ) { |
180 |
|
fo_getvec(vout, j+(n+frandom())/npsamps, abp); |
181 |
< |
fi_getvec(vin, i+(n+frandom())/npsamps, abp); |
181 |
> |
fi_getvec(vin, i+urand(n), abp); |
182 |
|
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
183 |
|
if (ec != SDEnone) |
184 |
|
goto err; |
199 |
|
sum = 0; /* average over patches */ |
200 |
|
for (n = npsamps; n-- > 0; ) { |
201 |
|
bo_getvec(vout, j+(n+frandom())/npsamps, abp); |
202 |
< |
bi_getvec(vin, i+(n+frandom())/npsamps, abp); |
202 |
> |
bi_getvec(vin, i+urand(n), abp); |
203 |
|
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
204 |
|
if (ec != SDEnone) |
205 |
|
goto err; |
220 |
|
sum = 0; /* average over patches */ |
221 |
|
for (n = npsamps; n-- > 0; ) { |
222 |
|
bo_getvec(vout, j+(n+frandom())/npsamps, abp); |
223 |
< |
fi_getvec(vin, i+(n+frandom())/npsamps, abp); |
223 |
> |
fi_getvec(vin, i+urand(n), abp); |
224 |
|
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
225 |
|
if (ec != SDEnone) |
226 |
|
goto err; |
233 |
|
data_epilogue(); |
234 |
|
} |
235 |
|
/* back transmission */ |
236 |
< |
if (bsd.tb != NULL) { |
236 |
> |
if ((bsd.tb != NULL) | (bsd.tf != NULL)) { |
237 |
|
input_orient = -1; output_orient = 1; |
238 |
|
data_prologue(); |
239 |
|
for (j = 0; j < abp->nangles; j++) { |
240 |
|
for (i = 0; i < abp->nangles; i++) { |
241 |
< |
sum = 0; /* average over patches */ |
241 |
> |
sum = 0; /* average over patches */ |
242 |
|
for (n = npsamps; n-- > 0; ) { |
243 |
|
fo_getvec(vout, j+(n+frandom())/npsamps, abp); |
244 |
< |
bi_getvec(vin, i+(n+frandom())/npsamps, abp); |
244 |
> |
bi_getvec(vin, i+urand(n), abp); |
245 |
|
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
246 |
|
if (ec != SDEnone) |
247 |
|
goto err; |
260 |
|
exit(1); |
261 |
|
} |
262 |
|
|
263 |
< |
/* Interpolate and output a BSDF function */ |
263 |
> |
/* Interpolate and output a BSDF function using Klems basis */ |
264 |
|
static void |
265 |
|
eval_function(char *funame) |
266 |
|
{ |
267 |
|
ANGLE_BASIS *abp = get_basis(kbasis); |
268 |
+ |
int assignD = (fundefined(funame) < 6); |
269 |
|
double iovec[6]; |
270 |
|
double sum; |
271 |
|
int i, j, n; |
272 |
|
|
273 |
+ |
initurand(npsamps); |
274 |
|
data_prologue(); /* begin output */ |
275 |
|
for (j = 0; j < abp->nangles; j++) { /* run through directions */ |
276 |
|
for (i = 0; i < abp->nangles; i++) { |
282 |
|
bo_getvec(iovec+3, j+(n+frandom())/npsamps, abp); |
283 |
|
|
284 |
|
if (input_orient > 0) |
285 |
< |
fi_getvec(iovec, j+(n+frandom())/npsamps, abp); |
285 |
> |
fi_getvec(iovec, i+urand(n), abp); |
286 |
|
else |
287 |
< |
bi_getvec(iovec, j+(n+frandom())/npsamps, abp); |
287 |
> |
bi_getvec(iovec, i+urand(n), abp); |
288 |
|
|
289 |
+ |
if (assignD) { |
290 |
+ |
varset("Dx", '=', -iovec[3]); |
291 |
+ |
varset("Dy", '=', -iovec[4]); |
292 |
+ |
varset("Dz", '=', -iovec[5]); |
293 |
+ |
++eclock; |
294 |
+ |
} |
295 |
|
sum += funvalue(funame, 6, iovec); |
296 |
|
} |
297 |
|
printf("\t%.3e\n", sum/npsamps); |
306 |
|
eval_rbf(void) |
307 |
|
{ |
308 |
|
ANGLE_BASIS *abp = get_basis(kbasis); |
309 |
< |
double iovec[6]; |
309 |
> |
float bsdfarr[MAXPATCHES*MAXPATCHES]; |
310 |
> |
FVECT vin, vout; |
311 |
> |
RBFNODE *rbf; |
312 |
|
double sum; |
313 |
|
int i, j, n; |
314 |
+ |
/* sanity check */ |
315 |
+ |
if (abp->nangles > MAXPATCHES) { |
316 |
+ |
fprintf(stderr, "%s: too many patches!\n", progname); |
317 |
+ |
exit(1); |
318 |
+ |
} |
319 |
+ |
data_prologue(); /* begin output */ |
320 |
+ |
for (i = 0; i < abp->nangles; i++) { |
321 |
+ |
if (input_orient > 0) /* use incident patch center */ |
322 |
+ |
fi_getvec(vin, i+.5*(i>0), abp); |
323 |
+ |
else |
324 |
+ |
bi_getvec(vin, i+.5*(i>0), abp); |
325 |
|
|
326 |
< |
fprintf(stder, "%s: RBF evaluation currently unimplemented\n", progname); |
327 |
< |
exit(1); |
326 |
> |
rbf = advect_rbf(vin, lobe_lim); /* compute radial basis func */ |
327 |
> |
|
328 |
> |
for (j = 0; j < abp->nangles; j++) { |
329 |
> |
sum = 0; /* sample over exiting patch */ |
330 |
> |
for (n = npsamps; n--; ) { |
331 |
> |
if (output_orient > 0) |
332 |
> |
fo_getvec(vout, j+(n+frandom())/npsamps, abp); |
333 |
> |
else |
334 |
> |
bo_getvec(vout, j+(n+frandom())/npsamps, abp); |
335 |
> |
|
336 |
> |
sum += eval_rbfrep(rbf, vout) / vout[2]; |
337 |
> |
} |
338 |
> |
bsdfarr[j*abp->nangles + i] = sum*output_orient/npsamps; |
339 |
> |
} |
340 |
> |
if (rbf != NULL) |
341 |
> |
free(rbf); |
342 |
> |
} |
343 |
> |
n = 0; /* write out our matrix */ |
344 |
> |
for (j = 0; j < abp->nangles; j++) { |
345 |
> |
for (i = 0; i < abp->nangles; i++) |
346 |
> |
printf("\t%.3e\n", bsdfarr[n++]); |
347 |
> |
putchar('\n'); |
348 |
> |
} |
349 |
> |
data_epilogue(); /* finish output */ |
350 |
|
} |
351 |
|
|
352 |
|
/* Read in BSDF and interpolate as Klems matrix representation */ |
362 |
|
esupport &= ~(E_INCHAN|E_OUTCHAN); |
363 |
|
scompile("PI:3.14159265358979323846", NULL, 0); |
364 |
|
biggerlib(); |
365 |
< |
for (i = 1; i < argc-1 && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) |
365 |
> |
for (i = 1; i < argc && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) |
366 |
|
switch (argv[i][1]) { /* get options */ |
367 |
|
case 'n': |
368 |
|
npsamps = atoi(argv[++i]); |
389 |
|
case 'q': |
390 |
|
kbasis = "LBNL/Klems Quarter"; |
391 |
|
break; |
392 |
+ |
case 'l': |
393 |
+ |
lobe_lim = atoi(argv[++i]); |
394 |
+ |
break; |
395 |
|
default: |
396 |
|
goto userr; |
397 |
|
} |
400 |
|
fprintf(stderr, |
401 |
|
"%s: need single function with 6 arguments: bsdf(ix,iy,iz,ox,oy,oz)\n", |
402 |
|
progname); |
403 |
+ |
fprintf(stderr, "\tor 3 arguments using Dx,Dy,Dz: bsdf(ix,iy,iz)\n", |
404 |
+ |
progname); |
405 |
|
goto userr; |
406 |
|
} |
407 |
< |
xml_prologue(argc, argv); /* start XML output */ |
407 |
> |
++eclock; |
408 |
> |
xml_header(argc, argv); /* start XML output */ |
409 |
> |
xml_prologue(NULL); |
410 |
|
if (dofwd) { |
411 |
|
input_orient = -1; |
412 |
|
output_orient = -1; |
424 |
|
xml_epilogue(); /* finish XML output & exit */ |
425 |
|
return(0); |
426 |
|
} |
427 |
< |
if (i == argc-1 && (cp = strstr(argv[i], ".xml")) != NULL && |
428 |
< |
strlen(cp) == 4) { /* XML input? */ |
429 |
< |
xml_prologue(argc, argv); /* start XML output */ |
427 |
> |
/* XML input? */ |
428 |
> |
if (i == argc-1 && (cp = argv[i]+strlen(argv[i])-4) > argv[i] && |
429 |
> |
!strcasecmp(cp, ".xml")) { |
430 |
> |
xml_header(argc, argv); /* start XML output */ |
431 |
|
eval_bsdf(argv[i]); /* load & resample BSDF */ |
432 |
|
xml_epilogue(); /* finish XML output & exit */ |
433 |
|
return(0); |
444 |
|
if (!load_bsdf_rep(fpin)) |
445 |
|
return(1); |
446 |
|
fclose(fpin); |
447 |
< |
if (!nbsdf++) /* start XML on first dist. */ |
448 |
< |
xml_prologue(argc, argv); |
447 |
> |
if (!nbsdf++) { /* start XML on first dist. */ |
448 |
> |
xml_header(argc, argv); |
449 |
> |
xml_prologue(NULL); |
450 |
> |
} |
451 |
|
eval_rbf(); |
452 |
|
} |
453 |
|
xml_epilogue(); /* finish XML output & exit */ |
456 |
|
SET_FILE_BINARY(stdin); /* load from stdin */ |
457 |
|
if (!load_bsdf_rep(stdin)) |
458 |
|
return(1); |
459 |
< |
xml_prologue(argc, argv); /* start XML output */ |
459 |
> |
xml_header(argc, argv); /* start XML output */ |
460 |
> |
xml_prologue(NULL); |
461 |
|
eval_rbf(); /* resample dist. */ |
462 |
|
xml_epilogue(); /* finish XML output & exit */ |
463 |
|
return(0); |
464 |
|
userr: |
465 |
|
fprintf(stderr, |
466 |
< |
"Usage: %s [-n spp][-h|-q][bsdf.sir ..] > bsdf.xml\n", |
386 |
< |
progname); |
466 |
> |
"Usage: %s [-n spp][-h|-q][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", progname); |
467 |
|
fprintf(stderr, |
468 |
< |
" or: %s [-n spp][-h|-q] bsdf_in.xml > bsdf_out.xml\n", |
389 |
< |
progname); |
468 |
> |
" or: %s [-n spp][-h|-q] bsdf_in.xml > bsdf_out.xml\n", progname); |
469 |
|
fprintf(stderr, |
470 |
|
" or: %s [-n spp][-h|-q][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", |
471 |
|
progname); |