| 23 |
|
#define MAXITER 10 /* maximum # specular ray attempts */ |
| 24 |
|
#endif |
| 25 |
|
/* estimate of Fresnel function */ |
| 26 |
< |
#define FRESNE(ci) (exp(-6.0*(ci)) - 0.00247875217) |
| 26 |
> |
#define FRESNE(ci) (exp(-5.85*(ci)) - 0.00287989916) |
| 27 |
|
|
| 28 |
|
static void gaussamp(); |
| 29 |
|
|
| 87 |
|
|
| 88 |
|
/* Fresnel estimate */ |
| 89 |
|
ldiff = np->rdiff; |
| 90 |
< |
if (np->specfl & SP_PURE && (np->rspec > FTINY & ldiff > FTINY)) |
| 90 |
> |
if (np->specfl & SP_PURE && (np->rspec > FTINY) & (ldiff > FTINY)) |
| 91 |
|
ldiff *= 1. - FRESNE(fabs(ldot)); |
| 92 |
|
|
| 93 |
|
if (ldot > FTINY && ldiff > FTINY) { |
| 198 |
|
if ((nd.alpha2 *= nd.alpha2) <= FTINY) |
| 199 |
|
nd.specfl |= SP_PURE; |
| 200 |
|
|
| 201 |
< |
if (hastexture = (DOT(r->pert,r->pert) > FTINY*FTINY)) { |
| 201 |
> |
if ( (hastexture = (DOT(r->pert,r->pert) > FTINY*FTINY)) ) { |
| 202 |
|
nd.pdot = raynormal(nd.pnorm, r); /* perturb normal */ |
| 203 |
|
} else { |
| 204 |
|
VCOPY(nd.pnorm, r->ron); |
| 205 |
|
nd.pdot = r->rod; |
| 206 |
– |
if (r->ro != NULL && isflat(r->ro->otype)) |
| 207 |
– |
nd.specfl |= SP_FLAT; |
| 206 |
|
} |
| 207 |
+ |
if (r->ro != NULL && isflat(r->ro->otype)) |
| 208 |
+ |
nd.specfl |= SP_FLAT; |
| 209 |
|
if (nd.pdot < .001) |
| 210 |
|
nd.pdot = .001; /* non-zero for dirnorm() */ |
| 211 |
|
multcolor(nd.mcolor, r->pcol); /* modify material color */ |
