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 |
|
|
326 |
|
r->rmt = r->rot + raydistance(&lr); |
327 |
|
} |
328 |
|
} |
321 |
– |
/* diffuse reflection */ |
322 |
– |
nd.rdiff = 1.0 - nd.trans - nd.rspec; |
329 |
|
|
330 |
|
if (nd.specfl & SP_PURE && nd.rdiff <= FTINY && nd.tdiff <= FTINY) |
331 |
|
return(1); /* 100% pure specular */ |