| 135 |
|
* is always modified by material color. |
| 136 |
|
*/ |
| 137 |
|
/* roughness + source */ |
| 138 |
< |
dtmp = np->alpha2/4.0 + omega/PI; |
| 138 |
> |
dtmp = np->alpha2 + omega/PI; |
| 139 |
|
/* gaussian */ |
| 140 |
|
dtmp = exp((2.*DOT(np->prdir,ldir)-2.)/dtmp)/(4.*PI*dtmp); |
| 141 |
|
/* worth using? */ |
| 240 |
|
transtest = 2; |
| 241 |
|
} else { |
| 242 |
|
for (i = 0; i < 3; i++) /* perturb */ |
| 243 |
< |
nd.prdir[i] = r->rdir[i] - |
| 244 |
< |
0.5*r->pert[i]; |
| 243 |
> |
nd.prdir[i] = r->rdir[i] - r->pert[i]; |
| 244 |
|
if (DOT(nd.prdir, r->ron) < -FTINY) |
| 245 |
|
normalize(nd.prdir); /* OK */ |
| 246 |
|
else |
| 369 |
|
if (rv[1] <= FTINY) |
| 370 |
|
d = 1.0; |
| 371 |
|
else |
| 372 |
< |
d = sqrt( np->alpha2/4.0 * -log(rv[1]) ); |
| 372 |
> |
d = sqrt( -log(rv[1]) * np->alpha2 ); |
| 373 |
|
for (i = 0; i < 3; i++) |
| 374 |
|
sr.rdir[i] = np->prdir[i] + d*(cosp*u[i] + sinp*v[i]); |
| 375 |
|
if (DOT(sr.rdir, r->ron) < -FTINY) |
