| 309 |
|
FVECT onorm; |
| 310 |
|
FVECT offsdir; |
| 311 |
|
SRCINDEX si; |
| 312 |
< |
double or, d; |
| 312 |
> |
double or, d, d1; |
| 313 |
|
int stestlim, ssn; |
| 314 |
|
int nhit, nok; |
| 315 |
|
register int i, n; |
| 361 |
|
sr.rdir[i] = -onorm[i]; |
| 362 |
|
} |
| 363 |
|
sr.rmax = 0.0; |
| 364 |
< |
rayorigin(&sr, NULL, PRIMARY, 1.0); |
| 364 |
> |
rayorigin(&sr, PRIMARY, NULL, NULL); |
| 365 |
|
} while (!(*ofun[o->otype].funp)(o, &sr)); |
| 366 |
|
/* check against source */ |
| 367 |
|
VCOPY(sr.rorg, sr.rop); /* starting from intersection */ |
| 373 |
|
if (!srcray(&sr, NULL, &si) || sr.rsrc != sn) |
| 374 |
|
continue; /* can't get there from here */ |
| 375 |
|
} |
| 376 |
< |
srcvalue(&sr); /* check sample validity */ |
| 377 |
< |
if (bright(sr.rcol) <= FTINY) |
| 376 |
> |
sr.revf = srcvalue; |
| 377 |
> |
rayvalue(&sr); /* check sample validity */ |
| 378 |
> |
if ((d = bright(sr.rcol)) <= FTINY) |
| 379 |
|
continue; |
| 380 |
|
nok++; /* got sample; check obstructions */ |
| 381 |
|
rayclear(&sr); |
| 382 |
+ |
sr.revf = raytrace; |
| 383 |
|
rayvalue(&sr); |
| 384 |
< |
if (bright(sr.rcol) > FTINY) |
| 384 |
> |
if ((d1 = bright(sr.rcol)) > FTINY) { |
| 385 |
> |
if (d - d1 > FTINY) { |
| 386 |
> |
#ifdef DEBUG |
| 387 |
> |
fprintf(stderr, "\tpartially shadowed\n"); |
| 388 |
> |
#endif |
| 389 |
> |
return(f); /* intervening transmitter */ |
| 390 |
> |
} |
| 391 |
|
nhit++; |
| 392 |
+ |
} |
| 393 |
|
if (nhit > 0 && nhit < nok) { |
| 394 |
|
#ifdef DEBUG |
| 395 |
|
fprintf(stderr, "\tpartially occluded\n"); |
