| 326 |
|
sumambient( /* get interpolated ambient value */ |
| 327 |
|
COLOR acol, |
| 328 |
|
register RAY *r, |
| 329 |
< |
double rw, |
| 329 |
> |
double aw, |
| 330 |
|
FVECT rn, |
| 331 |
|
int al, |
| 332 |
|
AMBTREE *at, |
| 352 |
|
*/ |
| 353 |
|
if (av->lvl > al) /* list sorted, so this works */ |
| 354 |
|
break; |
| 355 |
< |
if (av->weight < 0.9*rw) |
| 355 |
> |
if (av->weight < 0.85*aw) |
| 356 |
|
continue; |
| 357 |
|
/* |
| 358 |
|
* Ambient radius test. |
| 431 |
|
break; |
| 432 |
|
} |
| 433 |
|
if (j == 3) |
| 434 |
< |
wsum += sumambient(acol, r, rw, rn, al, |
| 434 |
> |
wsum += sumambient(acol, r, aw, rn, al, |
| 435 |
|
at->kid+i, ck0, s); |
| 436 |
|
} |
| 437 |
|
return(wsum); |
| 439 |
|
|
| 440 |
|
|
| 441 |
|
extern double |
| 442 |
< |
makeambient( /* make a new ambient value */ |
| 442 |
> |
makeambient( /* make a new ambient value */ |
| 443 |
|
COLOR acol, |
| 444 |
|
RAY *r, |
| 445 |
|
COLOR ac, |
| 448 |
|
) |
| 449 |
|
{ |
| 450 |
|
AMBVAL amb; |
| 451 |
< |
double coef; |
| 451 |
> |
double awt; |
| 452 |
|
FVECT gp, gd; |
| 453 |
< |
/* compute weight */ |
| 454 |
< |
amb.weight = pow(AVGREFL, (double)al); |
| 455 |
< |
coef = intens(ac)*r->rweight; |
| 456 |
< |
if (coef < 0.1*amb.weight) /* heuristic */ |
| 457 |
< |
amb.weight = coef; |
| 453 |
> |
int i; |
| 454 |
> |
|
| 455 |
> |
amb.weight = AVGREFL; /* compute weight */ |
| 456 |
> |
for (i = al; i-- >= 0; ) |
| 457 |
> |
amb.weight *= AVGREFL; |
| 458 |
> |
awt = intens(ac)*r->rweight; |
| 459 |
> |
if (awt < 0.07*amb.weight) /* heuristic override */ |
| 460 |
> |
amb.weight = 1.2*awt; |
| 461 |
|
/* compute ambient */ |
| 462 |
|
amb.rad = doambient(acol, r, ac, amb.weight, gp, gd); |
| 463 |
|
if (amb.rad <= FTINY) |
