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 * |
156 |
|
eval_bsdf(const char *fname) |
157 |
|
{ |
158 |
|
ANGLE_BASIS *abp = get_basis(kbasis); |
157 |
– |
float *trans_mtx = NULL; |
159 |
|
SDData bsd; |
160 |
|
SDError ec; |
161 |
|
FVECT vin, vout; |
211 |
|
} |
212 |
|
/* front transmission */ |
213 |
|
if (bsd.tf != NULL || bsd.tLamb.cieY > .002) { |
213 |
– |
if (bsd.tb == NULL) |
214 |
– |
trans_mtx = (float *)malloc(sizeof(float) * |
215 |
– |
abp->nangles*abp->nangles); |
214 |
|
input_orient = 1; output_orient = -1; |
215 |
|
data_prologue(); |
216 |
|
for (j = 0; j < abp->nangles; j++) { |
225 |
|
sum += sv.cieY; |
226 |
|
} |
227 |
|
printf("\t%.3e\n", sum/npsamps); |
230 |
– |
if (trans_mtx != NULL) |
231 |
– |
trans_mtx[j*abp->nangles + i] = sum/npsamps; |
228 |
|
} |
229 |
|
putchar('\n'); /* extra space between rows */ |
230 |
|
} |
231 |
|
data_epilogue(); |
232 |
|
} |
233 |
|
/* back transmission */ |
234 |
< |
if (bsd.tb != NULL || trans_mtx != NULL) { |
239 |
< |
if (bsd.tf == NULL) |
240 |
< |
trans_mtx = (float *)malloc(sizeof(float) * |
241 |
< |
abp->nangles*abp->nangles); |
234 |
> |
if ((bsd.tb != NULL) | (bsd.tf != NULL)) { |
235 |
|
input_orient = -1; output_orient = 1; |
236 |
|
data_prologue(); |
237 |
|
for (j = 0; j < abp->nangles; j++) { |
238 |
< |
for (i = 0; i < abp->nangles; i++) |
239 |
< |
if (bsd.tb != NULL) { /* use tb if we have it */ |
240 |
< |
sum = 0; /* average over patches */ |
241 |
< |
for (n = npsamps; n-- > 0; ) { |
242 |
< |
fo_getvec(vout, j+(n+frandom())/npsamps, abp); |
243 |
< |
bi_getvec(vin, i+urand(n), abp); |
244 |
< |
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
252 |
< |
if (ec != SDEnone) |
238 |
> |
for (i = 0; i < abp->nangles; i++) { |
239 |
> |
sum = 0; /* average over patches */ |
240 |
> |
for (n = npsamps; n-- > 0; ) { |
241 |
> |
fo_getvec(vout, j+(n+frandom())/npsamps, abp); |
242 |
> |
bi_getvec(vin, i+urand(n), abp); |
243 |
> |
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
244 |
> |
if (ec != SDEnone) |
245 |
|
goto err; |
246 |
< |
sum += sv.cieY; |
255 |
< |
} |
256 |
< |
printf("\t%.3e\n", sum/npsamps); |
257 |
< |
if (trans_mtx != NULL) |
258 |
< |
trans_mtx[i*abp->nangles + j] = sum/npsamps; |
259 |
< |
} else { /* else transpose tf */ |
260 |
< |
printf("\t%.3e\n", trans_mtx[i*abp->nangles + j]); |
246 |
> |
sum += sv.cieY; |
247 |
|
} |
248 |
+ |
printf("\t%.3e\n", sum/npsamps); |
249 |
+ |
} |
250 |
|
putchar('\n'); /* extra space between rows */ |
251 |
|
} |
252 |
|
data_epilogue(); |
253 |
|
} |
266 |
– |
/* derived front transmission */ |
267 |
– |
if (bsd.tf == NULL && trans_mtx != NULL) { |
268 |
– |
input_orient = 1; output_orient = -1; |
269 |
– |
data_prologue(); |
270 |
– |
for (j = 0; j < abp->nangles; j++) { |
271 |
– |
for (i = 0; i < abp->nangles; i++) |
272 |
– |
printf("\t%.3e\n", trans_mtx[j*abp->nangles + i]); |
273 |
– |
putchar('\n'); /* extra space between rows */ |
274 |
– |
} |
275 |
– |
data_epilogue(); |
276 |
– |
} |
254 |
|
SDfreeBSDF(&bsd); /* all done */ |
278 |
– |
if (trans_mtx != NULL) |
279 |
– |
free(trans_mtx); |
255 |
|
return; |
256 |
|
err: |
257 |
|
SDreportError(ec, stderr); |
321 |
|
else |
322 |
|
bi_getvec(vin, i+.5*(i>0), abp); |
323 |
|
|
324 |
< |
rbf = advect_rbf(vin); /* compute radial basis func */ |
324 |
> |
rbf = advect_rbf(vin, lobe_lim); /* compute radial basis func */ |
325 |
|
|
326 |
|
for (j = 0; j < abp->nangles; j++) { |
327 |
|
sum = 0; /* sample over exiting patch */ |
387 |
|
case 'q': |
388 |
|
kbasis = "LBNL/Klems Quarter"; |
389 |
|
break; |
390 |
+ |
case 'l': |
391 |
+ |
lobe_lim = atoi(argv[++i]); |
392 |
+ |
break; |
393 |
|
default: |
394 |
|
goto userr; |
395 |
|
} |
461 |
|
return(0); |
462 |
|
userr: |
463 |
|
fprintf(stderr, |
464 |
< |
"Usage: %s [-n spp][-h|-q][bsdf.sir ..] > bsdf.xml\n", progname); |
464 |
> |
"Usage: %s [-n spp][-h|-q][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", progname); |
465 |
|
fprintf(stderr, |
466 |
|
" or: %s [-n spp][-h|-q] bsdf_in.xml > bsdf_out.xml\n", progname); |
467 |
|
fprintf(stderr, |