| 109 |
|
register int i; |
| 110 |
|
|
| 111 |
|
src->sflags = 0; |
| 112 |
+ |
src->aimsuccess = 2*AIMREQT-1; /* bitch on second failure */ |
| 113 |
|
src->nhits = 1; src->ntests = 2; /* start probability = 1/2 */ |
| 114 |
|
src->so = so; |
| 115 |
|
|
| 215 |
|
} |
| 216 |
|
if (dstrsrc > FTINY) { |
| 217 |
|
/* distribute source direction */ |
| 218 |
< |
for (i = 0; i < 3; i++) |
| 219 |
< |
vd[i] = dstrsrc * source[sn].ss * (1.0 - 2.0*frandom()); |
| 220 |
< |
|
| 218 |
> |
dimlist[ndims++] = sn; |
| 219 |
> |
for (i = 0; i < 3; i++) { |
| 220 |
> |
dimlist[ndims] = i + 8831; |
| 221 |
> |
vd[i] = dstrsrc * source[sn].ss * |
| 222 |
> |
(1.0 - 2.0*urand(ilhash(dimlist,ndims+1)+samplendx)); |
| 223 |
> |
} |
| 224 |
> |
ndims--; |
| 225 |
|
if (norm != NULL) { /* project offset */ |
| 226 |
|
d = DOT(vd, norm); |
| 227 |
|
for (i = 0; i < 3; i++) |
| 318 |
|
extern double pow(); |
| 319 |
|
register int sn; |
| 320 |
|
int nshadcheck, ncnts; |
| 321 |
< |
double prob, ourthresh, hwt, test2, hit2; |
| 321 |
> |
int nhits; |
| 322 |
> |
double prob, ourthresh, hwt; |
| 323 |
|
RAY sr; |
| 324 |
|
/* NOTE: srccnt and cntord global so no recursion */ |
| 325 |
|
if (nsources <= 0) |
| 342 |
|
if (cntord[sn].brt <= 0.0) |
| 343 |
|
continue; |
| 344 |
|
/* compute intersection */ |
| 345 |
< |
if (!( source[sn].sflags & SDISTANT ? |
| 345 |
> |
if (source[sn].sflags & SDISTANT ? |
| 346 |
|
sourcehit(&sr) : |
| 347 |
|
(*ofun[source[sn].so->otype].funp) |
| 348 |
< |
(source[sn].so, &sr) )) { |
| 348 |
> |
(source[sn].so, &sr)) { |
| 349 |
> |
if (source[sn].aimsuccess >= 0) |
| 350 |
> |
source[sn].aimsuccess++; |
| 351 |
> |
} else { |
| 352 |
> |
cntord[sn].brt = 0.0; |
| 353 |
> |
if (source[sn].aimsuccess < 0) |
| 354 |
> |
continue; /* bitched already */ |
| 355 |
> |
source[sn].aimsuccess -= AIMREQT; |
| 356 |
> |
if (source[sn].aimsuccess >= 0) |
| 357 |
> |
continue; /* leniency */ |
| 358 |
|
sprintf(errmsg, |
| 359 |
|
"aiming failure for light source \"%s\"", |
| 360 |
|
source[sn].so->oname); |
| 383 |
|
/* accumulate tail */ |
| 384 |
|
for (sn = ncnts-1; sn > 0; sn--) |
| 385 |
|
cntord[sn-1].brt += cntord[sn].brt; |
| 371 |
– |
/* start with prob=.5 */ |
| 372 |
– |
hit2 = 0.5; test2 = 1.0; |
| 386 |
|
/* test for shadows */ |
| 387 |
+ |
nhits = 0; |
| 388 |
|
for (sn = 0; sn < ncnts; sn++) { |
| 389 |
|
/* check threshold */ |
| 390 |
|
if ((sn+nshadcheck>=ncnts ? cntord[sn].brt : |
| 392 |
|
< ourthresh*bright(r->rcol)) |
| 393 |
|
break; |
| 394 |
|
/* get statistics */ |
| 381 |
– |
hwt = (double)source[cntord[sn].sno].nhits / |
| 382 |
– |
(double)source[cntord[sn].sno].ntests; |
| 383 |
– |
test2 += hwt; |
| 395 |
|
source[cntord[sn].sno].ntests++; |
| 396 |
|
/* test for hit */ |
| 397 |
|
rayorigin(&sr, r, SHADOW, 1.0); |
| 410 |
|
} |
| 411 |
|
/* add contribution if hit */ |
| 412 |
|
addcolor(r->rcol, srccnt[cntord[sn].sno].val); |
| 413 |
< |
hit2 += hwt; |
| 413 |
> |
nhits++; |
| 414 |
|
source[cntord[sn].sno].nhits++; |
| 415 |
|
} |
| 416 |
< |
/* weighted hit rate */ |
| 417 |
< |
hwt = hit2 / test2; |
| 416 |
> |
/* surface hit rate */ |
| 417 |
> |
if (sn > 0) |
| 418 |
> |
hwt = (double)nhits / (double)sn; |
| 419 |
> |
else |
| 420 |
> |
hwt = 0.5; |
| 421 |
|
#ifdef DEBUG |
| 422 |
|
sprintf(errmsg, "%d tested, %d untested, %f hit rate\n", |
| 423 |
|
sn, ncnts-sn, hwt); |
| 473 |
|
m->oargs.farg[2]); |
| 474 |
|
/* modify value */ |
| 475 |
|
multcolor(r->rcol, r->pcol); |
| 462 |
– |
/* assign distance */ |
| 463 |
– |
r->rt = r->rot; |
| 476 |
|
} |
| 477 |
|
} |
