| 209 |
|
int hitfront = 1; |
| 210 |
|
BRDFDAT nd; |
| 211 |
|
RAY sr; |
| 212 |
– |
double mirtest=0, mirdist; |
| 213 |
– |
double transtest=0, transdist; |
| 212 |
|
int hasrefl, hastrans; |
| 213 |
|
int hastexture; |
| 214 |
|
COLOR ctmp; |
| 259 |
|
multcolor(nd.tdiff, nd.mcolor); |
| 260 |
|
hasrefl = (bright(nd.rdiff) > FTINY); |
| 261 |
|
hastrans = (bright(nd.tdiff) > FTINY); |
| 264 |
– |
mirdist = transdist = r->rot; |
| 262 |
|
/* load cal file */ |
| 263 |
|
nd.dp = NULL; |
| 264 |
|
mf = getfunc(m, 9, 0x3f, 0); |
| 284 |
|
rayvalue(&sr); |
| 285 |
|
multcolor(sr.rcol, sr.rcoef); |
| 286 |
|
addcolor(r->rcol, sr.rcol); |
| 287 |
< |
if (!hastexture || r->crtype & (SHADOW|AMBIENT)) { |
| 288 |
< |
transtest = 2.0*bright(sr.rcol); |
| 289 |
< |
transdist = r->rot + sr.rt; |
| 293 |
< |
} |
| 287 |
> |
if ((!hastexture || r->crtype & (SHADOW|AMBIENT)) && |
| 288 |
> |
nd.tspec > bright(nd.tdiff) + bright(nd.rdiff)) |
| 289 |
> |
r->rxt = r->rot + raydistance(&sr); |
| 290 |
|
} |
| 291 |
< |
if (r->crtype & SHADOW) { /* the rest is shadow */ |
| 296 |
< |
r->rt = transdist; |
| 291 |
> |
if (r->crtype & SHADOW) /* the rest is shadow */ |
| 292 |
|
return(1); |
| 293 |
< |
} |
| 293 |
> |
|
| 294 |
|
/* compute reflected ray */ |
| 295 |
|
setbrdfunc(&nd); |
| 296 |
|
errno = 0; |
| 304 |
|
checknorm(sr.rdir); |
| 305 |
|
rayvalue(&sr); |
| 306 |
|
multcolor(sr.rcol, sr.rcoef); |
| 307 |
+ |
copycolor(r->mcol, sr.rcol); |
| 308 |
|
addcolor(r->rcol, sr.rcol); |
| 309 |
< |
if (!hastexture && r->ro != NULL && isflat(r->ro->otype)) { |
| 310 |
< |
mirtest = 2.0*bright(sr.rcol); |
| 311 |
< |
mirdist = r->rot + sr.rt; |
| 312 |
< |
} |
| 309 |
> |
r->rmt = r->rot; |
| 310 |
> |
if (r->ro != NULL && isflat(r->ro->otype) && |
| 311 |
> |
!hastexture | (r->crtype & AMBIENT)) |
| 312 |
> |
r->rmt += raydistance(&sr); |
| 313 |
|
} |
| 314 |
|
/* compute ambient */ |
| 315 |
|
if (hasrefl) { |
| 336 |
|
if (hasrefl | hastrans || m->oargs.sarg[6][0] != '0') |
| 337 |
|
direct(r, dirbrdf, &nd); /* add direct component */ |
| 338 |
|
|
| 343 |
– |
d = bright(r->rcol); /* set effective distance */ |
| 344 |
– |
if (transtest > d) |
| 345 |
– |
r->rt = transdist; |
| 346 |
– |
else if (mirtest > d) |
| 347 |
– |
r->rt = mirdist; |
| 348 |
– |
|
| 339 |
|
return(1); |
| 340 |
|
} |
| 341 |
|
|
| 409 |
|
multambient(ctmp, r, nd.pnorm); |
| 410 |
|
addcolor(r->rcol, ctmp); /* add to returned color */ |
| 411 |
|
} |
| 412 |
< |
if (nd.trans > FTINY) { /* from other side */ |
| 412 |
> |
if (nd.trans > FTINY) { /* from other side */ |
| 413 |
|
flipsurface(r); |
| 414 |
|
vtmp[0] = -nd.pnorm[0]; |
| 415 |
|
vtmp[1] = -nd.pnorm[1]; |
| 438 |
|
return(0); /* it's OK, setfunc says we're done */ |
| 439 |
|
/* else (re)assign special variables */ |
| 440 |
|
multv3(vec, np->pnorm, funcxf.xfm); |
| 441 |
< |
varset("NxP", '=', vec[0]/funcxf.sca); |
| 442 |
< |
varset("NyP", '=', vec[1]/funcxf.sca); |
| 443 |
< |
varset("NzP", '=', vec[2]/funcxf.sca); |
| 444 |
< |
varset("RdotP", '=', np->pdot <= -1.0 ? -1.0 : |
| 441 |
> |
varset("NxP`", '=', vec[0]/funcxf.sca); |
| 442 |
> |
varset("NyP`", '=', vec[1]/funcxf.sca); |
| 443 |
> |
varset("NzP`", '=', vec[2]/funcxf.sca); |
| 444 |
> |
varset("RdotP`", '=', np->pdot <= -1.0 ? -1.0 : |
| 445 |
|
np->pdot >= 1.0 ? 1.0 : np->pdot); |
| 446 |
|
varset("CrP", '=', colval(np->mcolor,RED)); |
| 447 |
|
varset("CgP", '=', colval(np->mcolor,GRN)); |
