| 60 |
|
|
| 61 |
|
if (r->rod < 0.0) /* reorient if necessary */ |
| 62 |
|
flipsurface(r); |
| 63 |
+ |
r->rt = r->rot; /* default ray length */ |
| 64 |
|
/* get modifiers */ |
| 65 |
|
raytexture(r, m->omod); |
| 66 |
|
pdot = raynormal(pnorm, r); |
| 82 |
|
} |
| 83 |
|
/* transmitted ray */ |
| 84 |
|
if (rayorigin(&p, r, TRANS, bright(trans)) == 0) { |
| 85 |
< |
VCOPY(p.rdir, r->rdir); |
| 85 |
> |
for (i = 0; i < 3; i++) /* perturb direction */ |
| 86 |
> |
p.rdir[i] = r->rdir[i] - r->pert[i]/RINDEX; |
| 87 |
> |
normalize(p.rdir); |
| 88 |
|
rayvalue(&p); |
| 89 |
|
multcolor(p.rcol, r->pcol); /* modify */ |
| 90 |
|
multcolor(p.rcol, trans); |
| 91 |
|
addcolor(r->rcol, p.rcol); |
| 92 |
< |
r->rt = r->rot + p.rt; |
| 92 |
> |
if (bright(p.rcol) > .5) |
| 93 |
> |
r->rt = r->rot + p.rt; |
| 94 |
|
} |
| 95 |
|
|
| 96 |
|
if (r->crtype & SHADOW) /* skip reflected ray */ |
| 108 |
|
rayvalue(&p); |
| 109 |
|
multcolor(p.rcol, refl); |
| 110 |
|
addcolor(r->rcol, p.rcol); |
| 107 |
– |
if (bright(refl) > bright(trans)) |
| 108 |
– |
r->rt = r->rot + p.rt; |
| 111 |
|
} |
| 112 |
|
} |
