| 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 |
|
|
| 152 |
|
ambdone(); |
| 153 |
|
/* init ambient limits */ |
| 154 |
|
setambres(ambres); |
| 155 |
< |
setambacc(ambacc); |
| 155 |
> |
qambacc = sqrt(sqrt(ambacc *= (ambacc > FTINY))); |
| 156 |
|
if (ambfile == NULL || !ambfile[0]) |
| 157 |
|
return; |
| 158 |
|
if (ambacc <= FTINY) { |
| 357 |
|
FVECT c0, |
| 358 |
|
double s |
| 359 |
|
) |
| 360 |
< |
{ /* initial limit is ambacc radians */ |
| 361 |
< |
const double maxangle = (ambacc-PI/2.)*pow(r->rweight,0.13) + PI/2.; |
| 360 |
> |
{ /* initial limit is 10 degrees plus ambacc radians */ |
| 361 |
> |
const double minangle = 10.0 * PI/180.; |
| 362 |
> |
const double maxangle = (minangle+ambacc-PI/2.)*pow(r->rweight,0.13) |
| 363 |
> |
+ PI/2.; |
| 364 |
|
double wsum = 0.0; |
| 365 |
|
FVECT ck0; |
| 366 |
|
int i, j; |
| 400 |
|
delta_t2 = d*d; |
| 401 |
|
d = DOT(ck0, uvw[1]) / av->rad[1]; |
| 402 |
|
delta_t2 += d*d; |
| 403 |
< |
if (delta_t2 >= ambacc*ambacc) |
| 403 |
> |
d = DOT(ck0, uvw[2]) / av->rad[0]; |
| 404 |
> |
delta_t2 += d*d; |
| 405 |
> |
if (delta_t2 >= qambacc*qambacc) |
| 406 |
|
continue; |
| 407 |
|
/* |
| 399 |
– |
* Intersection behind test |
| 400 |
– |
*/ |
| 401 |
– |
d = 0.0; |
| 402 |
– |
for (j = 0; j < 3; j++) |
| 403 |
– |
d += (r->rop[j] - av->pos[j])*(uvw[2][j] + r->ron[j]); |
| 404 |
– |
if (d*0.5 < -minarad*ambacc-.001) |
| 405 |
– |
continue; |
| 406 |
– |
/* |
| 408 |
|
* Extrapolate value and compute final weight (hat function) |
| 409 |
|
*/ |
| 410 |
|
extambient(ct, av, r->rop, rn, uvw); |
| 411 |
|
d = tfunc(maxangle, sqrt(delta_r2), 0.0) * |
| 412 |
< |
tfunc(ambacc, sqrt(delta_t2), 0.0); |
| 412 |
> |
tfunc(qambacc, sqrt(delta_t2), 0.0); |
| 413 |
|
scalecolor(ct, d); |
| 414 |
|
addcolor(acol, ct); |
| 415 |
|
wsum += d; |
| 457 |
|
/* compute ambient */ |
| 458 |
|
i = doambient(acol, r, amb.weight, uvw, amb.rad, amb.gpos, amb.gdir); |
| 459 |
|
scalecolor(acol, 1./AVGREFL); /* undo assumed reflectance */ |
| 460 |
< |
if (i <= 0) /* no Hessian => no storage */ |
| 460 |
> |
if (i <= 0 || amb.rad[0] <= FTINY) /* no Hessian or zero radius */ |
| 461 |
|
return(i); |
| 462 |
|
/* store value */ |
| 463 |
|
VCOPY(amb.pos, r->rop); |
| 530 |
|
at = &atrunk; |
| 531 |
|
VCOPY(ck0, thescene.cuorg); |
| 532 |
|
s = thescene.cusize; |
| 533 |
< |
while (s*(OCTSCALE/2) > av->rad[1]*ambacc) { |
| 533 |
> |
while (s*(OCTSCALE/2) > av->rad[1]*qambacc) { |
| 534 |
|
if (at->kid == NULL) |
| 535 |
|
if ((at->kid = newambtree()) == NULL) |
| 536 |
|
error(SYSTEM, "out of memory in avinsert"); |
