| 154 |
|
eval_bsdf(const char *fname) |
| 155 |
|
{ |
| 156 |
|
ANGLE_BASIS *abp = get_basis(kbasis); |
| 157 |
+ |
float *trans_mtx = NULL; |
| 158 |
|
SDData bsd; |
| 159 |
|
SDError ec; |
| 160 |
|
FVECT vin, vout; |
| 210 |
|
} |
| 211 |
|
/* front transmission */ |
| 212 |
|
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); |
| 216 |
|
input_orient = 1; output_orient = -1; |
| 217 |
|
data_prologue(); |
| 218 |
|
for (j = 0; j < abp->nangles; j++) { |
| 227 |
|
sum += sv.cieY; |
| 228 |
|
} |
| 229 |
|
printf("\t%.3e\n", sum/npsamps); |
| 230 |
+ |
if (trans_mtx != NULL) |
| 231 |
+ |
trans_mtx[j*abp->nangles + i] = sum/npsamps; |
| 232 |
|
} |
| 233 |
|
putchar('\n'); /* extra space between rows */ |
| 234 |
|
} |
| 235 |
|
data_epilogue(); |
| 236 |
|
} |
| 237 |
|
/* back transmission */ |
| 238 |
< |
if (bsd.tb != NULL) { |
| 238 |
> |
if (bsd.tb != NULL || trans_mtx != NULL) { |
| 239 |
> |
if (bsd.tf == NULL) |
| 240 |
> |
trans_mtx = (float *)malloc(sizeof(float) * |
| 241 |
> |
abp->nangles*abp->nangles); |
| 242 |
|
input_orient = -1; output_orient = 1; |
| 243 |
|
data_prologue(); |
| 244 |
|
for (j = 0; j < abp->nangles; j++) { |
| 245 |
< |
for (i = 0; i < abp->nangles; i++) { |
| 246 |
< |
sum = 0; /* average over patches */ |
| 247 |
< |
for (n = npsamps; n-- > 0; ) { |
| 248 |
< |
fo_getvec(vout, j+(n+frandom())/npsamps, abp); |
| 249 |
< |
bi_getvec(vin, i+urand(n), abp); |
| 250 |
< |
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
| 251 |
< |
if (ec != SDEnone) |
| 245 |
> |
for (i = 0; i < abp->nangles; i++) |
| 246 |
> |
if (bsd.tb != NULL) { /* use tb if we have it */ |
| 247 |
> |
sum = 0; /* average over patches */ |
| 248 |
> |
for (n = npsamps; n-- > 0; ) { |
| 249 |
> |
fo_getvec(vout, j+(n+frandom())/npsamps, abp); |
| 250 |
> |
bi_getvec(vin, i+urand(n), abp); |
| 251 |
> |
ec = SDevalBSDF(&sv, vout, vin, &bsd); |
| 252 |
> |
if (ec != SDEnone) |
| 253 |
|
goto err; |
| 254 |
< |
sum += sv.cieY; |
| 254 |
> |
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]); |
| 261 |
|
} |
| 246 |
– |
printf("\t%.3e\n", sum/npsamps); |
| 247 |
– |
} |
| 262 |
|
putchar('\n'); /* extra space between rows */ |
| 263 |
|
} |
| 264 |
|
data_epilogue(); |
| 265 |
|
} |
| 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 |
+ |
} |
| 277 |
|
SDfreeBSDF(&bsd); /* all done */ |
| 278 |
+ |
if (trans_mtx != NULL) |
| 279 |
+ |
free(trans_mtx); |
| 280 |
|
return; |
| 281 |
|
err: |
| 282 |
|
SDreportError(ec, stderr); |
