| 14 |
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#include "rtio.h" |
| 15 |
|
#include "resolu.h" |
| 16 |
|
#include "bsdfrep.h" |
| 17 |
< |
/* which quadrants are represented */ |
| 17 |
> |
/* active grid resolution */ |
| 18 |
> |
int grid_res = GRIDRES; |
| 19 |
> |
|
| 20 |
> |
/* coverage/symmetry using INP_QUAD? flags */ |
| 21 |
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int inp_coverage = 0; |
| 22 |
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/* all incident angles in-plane so far? */ |
| 23 |
|
int single_plane_incident = -1; |
| 171 |
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rev_symmetry(rbf->invec, sym); |
| 172 |
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if (sym & MIRROR_X) |
| 173 |
|
for (n = rbf->nrbf; n-- > 0; ) |
| 174 |
< |
rbf->rbfa[n].gx = GRIDRES-1 - rbf->rbfa[n].gx; |
| 174 |
> |
rbf->rbfa[n].gx = grid_res-1 - rbf->rbfa[n].gx; |
| 175 |
|
if (sym & MIRROR_Y) |
| 176 |
|
for (n = rbf->nrbf; n-- > 0; ) |
| 177 |
< |
rbf->rbfa[n].gy = GRIDRES-1 - rbf->rbfa[n].gy; |
| 177 |
> |
rbf->rbfa[n].gy = grid_res-1 - rbf->rbfa[n].gy; |
| 178 |
|
} |
| 179 |
|
|
| 180 |
|
/* Compute volume associated with Gaussian lobe */ |
| 193 |
|
double uv[2]; |
| 194 |
|
double r2; |
| 195 |
|
|
| 196 |
< |
SDsquare2disk(uv, (1./GRIDRES)*(xpos+.5), (1./GRIDRES)*(ypos+.5)); |
| 196 |
> |
SDsquare2disk(uv, (1./grid_res)*(xpos+.5), (1./grid_res)*(ypos+.5)); |
| 197 |
|
/* uniform hemispherical projection */ |
| 198 |
|
r2 = uv[0]*uv[0] + uv[1]*uv[1]; |
| 199 |
|
vec[0] = vec[1] = sqrt(2. - r2); |
| 211 |
|
|
| 212 |
|
SDdisk2square(sq, vec[0]*norm, vec[1]*norm); |
| 213 |
|
|
| 214 |
< |
pos[0] = (int)(sq[0]*GRIDRES); |
| 215 |
< |
pos[1] = (int)(sq[1]*GRIDRES); |
| 214 |
> |
pos[0] = (int)(sq[0]*grid_res); |
| 215 |
> |
pos[1] = (int)(sq[1]*grid_res); |
| 216 |
|
} |
| 217 |
|
|
| 218 |
|
/* Evaluate RBF for DSF at the given normalized outgoing direction */ |
| 284 |
|
RBFNODE *rbf; |
| 285 |
|
|
| 286 |
|
for (rbf = dsf_list; rbf != NULL; rbf = rbf->next) |
| 287 |
< |
if (rbf->ord == ord); |
| 287 |
> |
if (rbf->ord == ord) |
| 288 |
|
return(rbf); |
| 289 |
|
return(NULL); |
| 290 |
|
} |
| 315 |
|
int |
| 316 |
|
get_triangles(RBFNODE *rbfv[2], const MIGRATION *mig) |
| 317 |
|
{ |
| 318 |
< |
const MIGRATION *ej, *ej2; |
| 318 |
> |
const MIGRATION *ej1, *ej2; |
| 319 |
|
RBFNODE *tv; |
| 320 |
|
|
| 321 |
|
rbfv[0] = rbfv[1] = NULL; |
| 322 |
|
if (mig == NULL) |
| 323 |
|
return(0); |
| 324 |
< |
for (ej = mig->rbfv[0]->ejl; ej != NULL; |
| 325 |
< |
ej = nextedge(mig->rbfv[0],ej)) { |
| 326 |
< |
if (ej == mig) |
| 324 |
> |
for (ej1 = mig->rbfv[0]->ejl; ej1 != NULL; |
| 325 |
> |
ej1 = nextedge(mig->rbfv[0],ej1)) { |
| 326 |
> |
if (ej1 == mig) |
| 327 |
|
continue; |
| 328 |
< |
tv = opp_rbf(mig->rbfv[0],ej); |
| 328 |
> |
tv = opp_rbf(mig->rbfv[0],ej1); |
| 329 |
|
for (ej2 = tv->ejl; ej2 != NULL; ej2 = nextedge(tv,ej2)) |
| 330 |
|
if (opp_rbf(tv,ej2) == mig->rbfv[1]) { |
| 331 |
|
rbfv[is_rev_tri(mig->rbfv[0]->invec, |
| 337 |
|
return((rbfv[0] != NULL) + (rbfv[1] != NULL)); |
| 338 |
|
} |
| 339 |
|
|
| 340 |
+ |
/* Clear our BSDF representation and free memory */ |
| 341 |
+ |
void |
| 342 |
+ |
clear_bsdf_rep(void) |
| 343 |
+ |
{ |
| 344 |
+ |
while (mig_list != NULL) { |
| 345 |
+ |
MIGRATION *mig = mig_list; |
| 346 |
+ |
mig_list = mig->next; |
| 347 |
+ |
free(mig); |
| 348 |
+ |
} |
| 349 |
+ |
while (dsf_list != NULL) { |
| 350 |
+ |
RBFNODE *rbf = dsf_list; |
| 351 |
+ |
dsf_list = rbf->next; |
| 352 |
+ |
free(rbf); |
| 353 |
+ |
} |
| 354 |
+ |
inp_coverage = 0; |
| 355 |
+ |
single_plane_incident = -1; |
| 356 |
+ |
input_orient = output_orient = 0; |
| 357 |
+ |
grid_res = GRIDRES; |
| 358 |
+ |
} |
| 359 |
+ |
|
| 360 |
|
/* Write our BSDF mesh interpolant out to the given binary stream */ |
| 361 |
|
void |
| 362 |
|
save_bsdf_rep(FILE *ofp) |
| 367 |
|
/* finish header */ |
| 368 |
|
fprintf(ofp, "SYMMETRY=%d\n", !single_plane_incident * inp_coverage); |
| 369 |
|
fprintf(ofp, "IO_SIDES= %d %d\n", input_orient, output_orient); |
| 370 |
+ |
fprintf(ofp, "GRIDRES=%d\n", grid_res); |
| 371 |
|
fputformat(BSDFREP_FMT, ofp); |
| 372 |
|
fputc('\n', ofp); |
| 373 |
|
/* write each DSF */ |
| 394 |
|
/* write out as sparse data */ |
| 395 |
|
n = mtx_nrows(mig) * mtx_ncols(mig); |
| 396 |
|
for (i = 0; i < n; i++) { |
| 397 |
< |
if (zerocnt >= 0xff) { |
| 398 |
< |
putint(zerocnt, 1, ofp); zerocnt = 0; |
| 397 |
> |
if (zerocnt == 0xff) { |
| 398 |
> |
putint(0xff, 1, ofp); zerocnt = 0; |
| 399 |
|
} |
| 400 |
|
if (mig->mtx[i] != 0) { |
| 401 |
|
putint(zerocnt, 1, ofp); zerocnt = 0; |
| 429 |
|
sscanf(s+9, "%d %d", &input_orient, &output_orient); |
| 430 |
|
return(0); |
| 431 |
|
} |
| 432 |
+ |
if (!strncmp(s, "GRIDRES=", 8)) { |
| 433 |
+ |
sscanf(s+8, "%d", &grid_res); |
| 434 |
+ |
return(0); |
| 435 |
+ |
} |
| 436 |
|
if (formatval(fmt, s) && strcmp(fmt, BSDFREP_FMT)) |
| 437 |
|
return(-1); |
| 438 |
|
return(0); |
| 445 |
|
RBFNODE rbfh; |
| 446 |
|
int from_ord, to_ord; |
| 447 |
|
int i; |
| 448 |
< |
#ifdef DEBUG |
| 449 |
< |
if ((dsf_list != NULL) | (mig_list != NULL)) { |
| 450 |
< |
fprintf(stderr, |
| 423 |
< |
"%s: attempt to load BSDF interpolant over existing\n", |
| 424 |
< |
progname); |
| 448 |
> |
|
| 449 |
> |
clear_bsdf_rep(); |
| 450 |
> |
if (ifp == NULL) |
| 451 |
|
return(0); |
| 426 |
– |
} |
| 427 |
– |
#endif |
| 428 |
– |
input_orient = output_orient = 0; |
| 429 |
– |
single_plane_incident = -1; |
| 452 |
|
if (getheader(ifp, headline, NULL) < 0 || single_plane_incident < 0 | |
| 453 |
|
!input_orient | !output_orient) { |
| 454 |
|
fprintf(stderr, "%s: missing/bad format for BSDF interpolant\n", |
| 463 |
|
rbfh.invec[0] = getflt(ifp); |
| 464 |
|
rbfh.invec[1] = getflt(ifp); |
| 465 |
|
rbfh.invec[2] = getflt(ifp); |
| 466 |
+ |
rbfh.vtotal = getflt(ifp); |
| 467 |
|
rbfh.nrbf = getint(4, ifp); |
| 445 |
– |
if (!new_input_vector(rbfh.invec)) |
| 446 |
– |
return(0); |
| 468 |
|
newrbf = (RBFNODE *)malloc(sizeof(RBFNODE) + |
| 469 |
|
sizeof(RBFVAL)*(rbfh.nrbf-1)); |
| 470 |
|
if (newrbf == NULL) |
| 508 |
|
memset(newmig->mtx, 0, sizeof(float)*n); |
| 509 |
|
for (i = 0; ; ) { /* read sparse data */ |
| 510 |
|
int zc = getint(1, ifp) & 0xff; |
| 490 |
– |
if (zc == 0xff) { |
| 491 |
– |
i += 0xff; |
| 492 |
– |
continue; |
| 493 |
– |
} |
| 511 |
|
if ((i += zc) >= n) |
| 512 |
|
break; |
| 513 |
+ |
if (zc == 0xff) |
| 514 |
+ |
continue; |
| 515 |
|
newmig->mtx[i++] = getflt(ifp); |
| 516 |
|
} |
| 517 |
|
if (feof(ifp)) |