| 36 |
|
{ |
| 37 |
|
COLOR mcolor; |
| 38 |
|
RAY nr; |
| 39 |
+ |
int rpure = 1; |
| 40 |
|
register int i; |
| 41 |
|
/* check arguments */ |
| 42 |
|
if (m->oargs.nfargs != 3 || m->oargs.nsargs > 1) |
| 77 |
|
|
| 78 |
|
if (rayorigin(&nr, r, REFLECTED, bright(mcolor)) < 0) |
| 79 |
|
return(1); |
| 80 |
< |
pdot = raynormal(pnorm, r); /* use textures */ |
| 81 |
< |
for (i = 0; i < 3; i++) |
| 82 |
< |
nr.rdir[i] = r->rdir[i] + 2.*pdot*pnorm[i]; |
| 80 |
> |
if (DOT(r->pert,r->pert) > FTINY*FTINY) { |
| 81 |
> |
pdot = raynormal(pnorm, r); /* use textures */ |
| 82 |
> |
for (i = 0; i < 3; i++) |
| 83 |
> |
nr.rdir[i] = r->rdir[i] + 2.*pdot*pnorm[i]; |
| 84 |
> |
rpure = 0; |
| 85 |
> |
} |
| 86 |
|
/* check for penetration */ |
| 87 |
< |
if (DOT(nr.rdir, r->ron) <= FTINY) |
| 87 |
> |
if (rpure || DOT(nr.rdir, r->ron) <= FTINY) |
| 88 |
|
for (i = 0; i < 3; i++) |
| 89 |
|
nr.rdir[i] = r->rdir[i] + 2.*r->rod*r->ron[i]; |
| 90 |
|
} |
| 91 |
|
rayvalue(&nr); |
| 92 |
|
multcolor(nr.rcol, mcolor); |
| 93 |
|
addcolor(r->rcol, nr.rcol); |
| 94 |
+ |
if (rpure && r->ro != NULL && isflat(r->ro->otype)) |
| 95 |
+ |
r->rt = r->rot + nr.rt; |
| 96 |
|
return(1); |
| 97 |
|
} |
| 98 |
|
|
