| 68 |
|
r->gecc = seccg; |
| 69 |
|
r->slights = NULL; |
| 70 |
|
} else { /* spawned ray */ |
| 71 |
< |
if (ro->rot >= FHUGE) { |
| 71 |
> |
if (ro->rot >= FHUGE*.99) { |
| 72 |
|
memset(r, 0, sizeof(RAY)); |
| 73 |
|
return(-1); /* illegal continuation */ |
| 74 |
|
} |
| 116 |
|
if (photonMapping && rt != TRANS) |
| 117 |
|
return(-1); |
| 118 |
|
} |
| 119 |
< |
if (maxdepth <= 0 && rc != NULL) { /* Russian roulette */ |
| 119 |
> |
if ((maxdepth <= 0) & (rc != NULL)) { /* Russian roulette */ |
| 120 |
|
if (minweight <= 0.0) |
| 121 |
|
error(USER, "zero ray weight in Russian roulette"); |
| 122 |
< |
if (maxdepth < 0 && r->rlvl > -maxdepth) |
| 122 |
> |
if ((maxdepth < 0) & (r->rlvl > -maxdepth)) |
| 123 |
|
return(-1); /* upper reflection limit */ |
| 124 |
|
if (r->rweight >= minweight) |
| 125 |
|
return(0); |
| 130 |
|
r->rweight = minweight; |
| 131 |
|
return(0); |
| 132 |
|
} |
| 133 |
< |
return(r->rweight >= minweight && r->rlvl <= abs(maxdepth) ? 0 : -1); |
| 133 |
> |
return((r->rweight >= minweight) & (r->rlvl <= abs(maxdepth)) ? 0 : -1); |
| 134 |
|
} |
| 135 |
|
|
| 136 |
|
|
| 146 |
|
r->ro = NULL; |
| 147 |
|
r->rox = NULL; |
| 148 |
|
r->rxt = r->rmt = r->rot = FHUGE; |
| 149 |
+ |
VCOPY(r->rop, r->rorg); |
| 150 |
+ |
r->ron[0] = -r->rdir[0]; r->ron[1] = -r->rdir[1]; r->ron[2] = -r->rdir[2]; |
| 151 |
+ |
r->rod = 1.0; |
| 152 |
|
r->pert[0] = r->pert[1] = r->pert[2] = 0.0; |
| 153 |
+ |
r->rflips = 0; |
| 154 |
|
r->uv[0] = r->uv[1] = 0.0; |
| 155 |
|
setcolor(r->pcol, 1.0, 1.0, 1.0); |
| 156 |
|
setcolor(r->mcol, 0.0, 0.0, 0.0); |
| 199 |
|
rayorigin(&tr, TRANS, r, NULL); /* always continue */ |
| 200 |
|
VCOPY(tr.rdir, r->rdir); |
| 201 |
|
rayvalue(&tr); |
| 202 |
+ |
copycolor(r->mcol, tr.mcol); |
| 203 |
|
copycolor(r->rcol, tr.rcol); |
| 204 |
|
r->rmt = r->rot + tr.rmt; |
| 205 |
|
r->rxt = r->rot + tr.rxt; |
| 212 |
|
RAY *r |
| 213 |
|
) |
| 214 |
|
{ |
| 215 |
< |
if ((ofun[m->otype].flags & (T_M|T_X)) && m->otype != MAT_CLIP) { |
| 215 |
> |
if (ofun[m->otype].flags & (T_M|T_X) && m->otype != MAT_CLIP) { |
| 216 |
|
if (istransp(m->otype) || isBSDFproxy(m)) { |
| 217 |
|
raytrans(r); |
| 218 |
|
return(1); |
| 233 |
|
int tst_irrad = do_irrad && !(r->crtype & ~(PRIMARY|TRANS)); |
| 234 |
|
OBJREC *m; |
| 235 |
|
|
| 236 |
< |
r->rxt = r->rmt = r->rot; /* preset effective ray length */ |
| 236 |
> |
r->rxt = r->rot; /* preset effective ray length */ |
| 237 |
|
for ( ; mod != OVOID; mod = m->omod) { |
| 238 |
|
m = objptr(mod); |
| 239 |
|
/****** unnecessary test since modifier() is always called |
| 372 |
|
scalecolor(br.rcol, 1.0-coef); |
| 373 |
|
copycolor(r->rcol, fr.rcol); |
| 374 |
|
addcolor(r->rcol, br.rcol); |
| 375 |
+ |
scalecolor(fr.mcol, coef); |
| 376 |
+ |
scalecolor(br.mcol, 1.0-coef); |
| 377 |
+ |
copycolor(r->mcol, fr.mcol); |
| 378 |
+ |
addcolor(r->mcol, br.mcol); |
| 379 |
|
mfore = bright(fr.mcol); mback = bright(br.mcol); |
| 380 |
|
r->rmt = mfore > mback ? fr.rmt : br.rmt; |
| 381 |
|
r->rxt = bright(fr.rcol)-mfore > bright(br.rcol)-mback ? |
| 407 |
|
int flags |
| 408 |
|
) |
| 409 |
|
{ |
| 410 |
< |
double eext[3]; |
| 402 |
< |
int i; |
| 410 |
> |
static int warnedPM = 0; |
| 411 |
|
|
| 404 |
– |
eext[0] = eext[1] = eext[2] = 0.; |
| 412 |
|
rc[0] = rc[1] = rc[2] = 1.; |
| 413 |
|
|
| 414 |
|
while (r != NULL && r->crtype&flags) { |
| 415 |
< |
for (i = 3; i--; ) { |
| 415 |
> |
int i = 3; |
| 416 |
> |
while (i--) |
| 417 |
|
rc[i] *= colval(r->rcoef,i); |
| 418 |
< |
eext[i] += r->rot * colval(r->cext,i); |
| 418 |
> |
/* check for participating medium */ |
| 419 |
> |
if (!warnedPM && (bright(r->cext) > FTINY) | |
| 420 |
> |
(bright(r->albedo) > FTINY)) { |
| 421 |
> |
error(WARNING, |
| 422 |
> |
"ray contribution calculation does not support participating media"); |
| 423 |
> |
warnedPM++; |
| 424 |
|
} |
| 425 |
|
r = r->parent; |
| 426 |
|
} |
| 414 |
– |
for (i = 3; i--; ) |
| 415 |
– |
rc[i] *= (eext[i] <= FTINY) ? 1. : |
| 416 |
– |
(eext[i] > 92.) ? 0. : exp(-eext[i]); |
| 427 |
|
} |
| 428 |
|
|
| 429 |
|
|
| 513 |
|
r->pert[0] = -r->pert[0]; |
| 514 |
|
r->pert[1] = -r->pert[1]; |
| 515 |
|
r->pert[2] = -r->pert[2]; |
| 516 |
+ |
r->rflips++; |
| 517 |
|
} |
| 518 |
|
|
| 519 |
+ |
|
| 520 |
+ |
int |
| 521 |
+ |
rayreject( /* check if candidate hit is worse than current */ |
| 522 |
+ |
OBJREC *o, |
| 523 |
+ |
RAY *r, |
| 524 |
+ |
double t |
| 525 |
+ |
) |
| 526 |
+ |
{ |
| 527 |
+ |
OBJREC *mnew, *mray; |
| 528 |
+ |
|
| 529 |
+ |
if ((t <= FTINY) | (t > r->rot + FTINY)) |
| 530 |
+ |
return 1; |
| 531 |
+ |
if (t < r->rot - FTINY) /* is new hit significantly closer? */ |
| 532 |
+ |
return 0; |
| 533 |
+ |
/* coincident, so decide... */ |
| 534 |
+ |
if (o == r->ro) |
| 535 |
+ |
return 1; /* shouldn't happen */ |
| 536 |
+ |
if (r->ro == NULL) |
| 537 |
+ |
return 0; /* ditto */ |
| 538 |
+ |
if ((mnew = findmaterial(o)) == NULL) |
| 539 |
+ |
return 1; /* new has no material */ |
| 540 |
+ |
if ((mray = findmaterial(r->ro)) == NULL) |
| 541 |
+ |
return 0; /* old has no material(!) */ |
| 542 |
+ |
if (istransp(mnew->otype)) |
| 543 |
+ |
return 1; /* new is transparent */ |
| 544 |
+ |
|
| 545 |
+ |
return !istransp(mray->otype); /* reject unless old is */ |
| 546 |
+ |
} |
| 547 |
|
|
| 548 |
|
void |
| 549 |
|
rayhit( /* standard ray hit test */ |
