| 262 |
|
} |
| 263 |
|
} else |
| 264 |
|
nd.tdiff = nd.tspec = nd.trans = 0.0; |
| 265 |
+ |
/* diffuse reflection */ |
| 266 |
+ |
nd.rdiff = 1.0 - nd.trans - nd.rspec; |
| 267 |
|
/* transmitted ray */ |
| 266 |
– |
|
| 268 |
|
if ((nd.specfl&(SP_TRAN|SP_PURE|SP_TBLT)) == (SP_TRAN|SP_PURE)) { |
| 269 |
|
RAY lr; |
| 270 |
|
copycolor(lr.rcoef, nd.mcolor); /* modified by color */ |
| 274 |
|
rayvalue(&lr); |
| 275 |
|
multcolor(lr.rcol, lr.rcoef); |
| 276 |
|
addcolor(r->rcol, lr.rcol); |
| 277 |
< |
r->rxt = r->rot + raydistance(&lr); |
| 277 |
> |
if (nd.tspec >= 1.0-FTINY) { |
| 278 |
> |
/* completely transparent */ |
| 279 |
> |
multcolor(lr.mcol, lr.rcoef); |
| 280 |
> |
copycolor(r->mcol, lr.mcol); |
| 281 |
> |
r->rmt = r->rot + lr.rmt; |
| 282 |
> |
r->rxt = r->rot + lr.rxt; |
| 283 |
> |
} else if (nd.tspec > nd.tdiff + nd.rdiff) |
| 284 |
> |
r->rxt = r->rot + raydistance(&lr); |
| 285 |
|
} |
| 286 |
|
} |
| 287 |
|
|
| 321 |
|
multcolor(lr.rcol, lr.rcoef); |
| 322 |
|
copycolor(r->mcol, lr.rcol); |
| 323 |
|
addcolor(r->rcol, lr.rcol); |
| 324 |
+ |
r->rmt = r->rot; |
| 325 |
|
if (nd.specfl & SP_FLAT && |
| 326 |
|
!hastexture | (r->crtype & AMBIENT)) |
| 327 |
< |
r->rmt = r->rot + raydistance(&lr); |
| 327 |
> |
r->rmt += raydistance(&lr); |
| 328 |
|
} |
| 329 |
|
} |
| 321 |
– |
/* diffuse reflection */ |
| 322 |
– |
nd.rdiff = 1.0 - nd.trans - nd.rspec; |
| 330 |
|
|
| 331 |
|
if (nd.specfl & SP_PURE && nd.rdiff <= FTINY && nd.tdiff <= FTINY) |
| 332 |
|
return(1); /* 100% pure specular */ |
