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 * |
58 |
|
static void |
59 |
|
xml_prologue(const SDData *sd) |
60 |
|
{ |
61 |
< |
const char *matn = (sd && sd->matn[0]) ? sd->matn : "Name"; |
62 |
< |
const char *makr = (sd && sd->makr[0]) ? sd->makr : "Manufacturer"; |
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 |
|
|
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; |
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, i+(n+frandom())/npsamps, abp); |
285 |
> |
fi_getvec(iovec, i+urand(n), abp); |
286 |
|
else |
287 |
< |
bi_getvec(iovec, i+(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); |
305 |
|
static void |
306 |
|
eval_rbf(void) |
307 |
|
{ |
294 |
– |
#define MAXPATCHES 145 |
308 |
|
ANGLE_BASIS *abp = get_basis(kbasis); |
309 |
|
float bsdfarr[MAXPATCHES*MAXPATCHES]; |
310 |
|
FVECT vin, vout; |
323 |
|
else |
324 |
|
bi_getvec(vin, i+.5*(i>0), abp); |
325 |
|
|
326 |
< |
rbf = advect_rbf(vin); /* compute radial basis func */ |
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 */ |
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++) { |
347 |
|
putchar('\n'); |
348 |
|
} |
349 |
|
data_epilogue(); /* finish output */ |
335 |
– |
#undef MAXPATCHES |
350 |
|
} |
351 |
|
|
352 |
|
/* Read in BSDF and interpolate as Klems matrix representation */ |
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 |
+ |
++eclock; |
408 |
|
xml_header(argc, argv); /* start XML output */ |
409 |
|
xml_prologue(NULL); |
410 |
|
if (dofwd) { |
463 |
|
return(0); |
464 |
|
userr: |
465 |
|
fprintf(stderr, |
466 |
< |
"Usage: %s [-n spp][-h|-q][bsdf.sir ..] > bsdf.xml\n", 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", progname); |
469 |
|
fprintf(stderr, |