51 |
|
#define MAX_SORT_INTVL (SORT_INTVL<<6) |
52 |
|
#endif |
53 |
|
|
54 |
+ |
|
55 |
+ |
static double qambacc = 0.; /* ambient accuracy to the 1/4 power */ |
56 |
|
static double avsum = 0.; /* computed ambient value sum (log) */ |
57 |
|
static unsigned int navsum = 0; /* number of values in avsum */ |
58 |
|
static unsigned int nambvals = 0; /* total number of indirect values */ |
134 |
|
if (newa < 0.0) |
135 |
|
newa = 0.0; |
136 |
|
ambdiff = fabs(newa - ambacc); |
137 |
< |
if (ambdiff >= .01 && (ambacc = newa) > FTINY && nambvals > 0) |
138 |
< |
sortambvals(1); /* rebuild tree */ |
137 |
> |
if (ambdiff >= .01 && (ambacc = newa) > FTINY) { |
138 |
> |
qambacc = sqrt(sqrt(ambacc)); |
139 |
> |
if (nambvals > 0) |
140 |
> |
sortambvals(1); /* rebuild tree */ |
141 |
> |
} |
142 |
|
} |
143 |
|
|
144 |
|
|
398 |
|
delta_t2 = d*d; |
399 |
|
d = DOT(ck0, uvw[1]) / av->rad[1]; |
400 |
|
delta_t2 += d*d; |
401 |
< |
if (delta_t2 >= ambacc*ambacc) |
401 |
> |
if (delta_t2 >= qambacc*qambacc) |
402 |
|
continue; |
403 |
|
/* |
404 |
|
* Intersection behind test |
413 |
|
*/ |
414 |
|
extambient(ct, av, r->rop, rn, uvw); |
415 |
|
d = tfunc(maxangle, sqrt(delta_r2), 0.0) * |
416 |
< |
tfunc(ambacc, sqrt(delta_t2), 0.0); |
416 |
> |
tfunc(qambacc, sqrt(delta_t2), 0.0); |
417 |
|
scalecolor(ct, d); |
418 |
|
addcolor(acol, ct); |
419 |
|
wsum += d; |
461 |
|
/* compute ambient */ |
462 |
|
i = doambient(acol, r, amb.weight, uvw, amb.rad, amb.gpos, amb.gdir); |
463 |
|
scalecolor(acol, 1./AVGREFL); /* undo assumed reflectance */ |
464 |
< |
if (i <= 0) /* no Hessian => no storage */ |
464 |
> |
if (i <= 0 || amb.rad[0] <= FTINY) /* no Hessian or zero radius */ |
465 |
|
return(i); |
466 |
|
/* store value */ |
467 |
|
VCOPY(amb.pos, r->rop); |
534 |
|
at = &atrunk; |
535 |
|
VCOPY(ck0, thescene.cuorg); |
536 |
|
s = thescene.cusize; |
537 |
< |
while (s*(OCTSCALE/2) > av->rad[1]*ambacc) { |
537 |
> |
while (s*(OCTSCALE/2) > av->rad[1]*qambacc) { |
538 |
|
if (at->kid == NULL) |
539 |
|
if ((at->kid = newambtree()) == NULL) |
540 |
|
error(SYSTEM, "out of memory in avinsert"); |