| 66 |
|
RAY *pr; /* intersected ray */ |
| 67 |
|
DATARRAY *dp; /* data array for PDATA, MDATA or TDATA */ |
| 68 |
|
COLOR mcolor; /* color of this material */ |
| 69 |
– |
COLOR scolor; /* color of specular reflection */ |
| 69 |
|
double rspec; /* specular reflection */ |
| 70 |
|
double rdiff; /* diffuse reflection */ |
| 71 |
|
double trans; /* transmissivity */ |
| 161 |
|
/* |
| 162 |
|
* Compute reflected non-diffuse component. |
| 163 |
|
*/ |
| 164 |
< |
multcolor(ctmp, np->scolor); |
| 165 |
< |
dtmp = ldot * omega; |
| 164 |
> |
if (np->mp->otype == MAT_MFUNC || np->mp->otype == MAT_MDATA) |
| 165 |
> |
multcolor(ctmp, np->mcolor); |
| 166 |
> |
dtmp = ldot * omega * np->rspec; |
| 167 |
|
scalecolor(ctmp, dtmp); |
| 168 |
|
addcolor(cval, ctmp); |
| 169 |
|
} else { |
| 170 |
|
/* |
| 171 |
|
* Compute transmitted non-diffuse component. |
| 172 |
|
*/ |
| 173 |
+ |
if (np->mp->otype == MAT_TFUNC || np->mp->otype == MAT_TDATA) |
| 174 |
+ |
multcolor(ctmp, np->mcolor); |
| 175 |
|
dtmp = -ldot * omega * np->tspec; |
| 176 |
|
scalecolor(ctmp, dtmp); |
| 177 |
|
addcolor(cval, ctmp); |
| 289 |
|
} |
| 290 |
|
if (r->crtype & SHADOW) /* the rest is shadow */ |
| 291 |
|
return; |
| 290 |
– |
if (nd.rspec > FTINY) { /* has specular component */ |
| 291 |
– |
/* compute specular color */ |
| 292 |
– |
if (m->otype == MAT_MFUNC || m->otype == MAT_MDATA) |
| 293 |
– |
copycolor(nd.scolor, nd.mcolor); |
| 294 |
– |
else |
| 295 |
– |
setcolor(nd.scolor, 1.0, 1.0, 1.0); |
| 296 |
– |
scalecolor(nd.scolor, nd.rspec); |
| 292 |
|
/* compute reflected ray */ |
| 293 |
< |
if (m->otype == MAT_BRTDF) { |
| 294 |
< |
RAY sr; |
| 295 |
< |
errno = 0; |
| 296 |
< |
setcolor(ctmp, varvalue(m->oargs.sarg[3]), |
| 297 |
< |
varvalue(m->oargs.sarg[4]), |
| 298 |
< |
varvalue(m->oargs.sarg[5])); |
| 299 |
< |
scalecolor(ctmp, nd.rspec); |
| 300 |
< |
if (errno) |
| 301 |
< |
objerror(m, WARNING, "compute error"); |
| 302 |
< |
else if ((dtmp = bright(ctmp)) > FTINY && |
| 293 |
> |
if (m->otype == MAT_BRTDF && nd.rspec > FTINY) { |
| 294 |
> |
RAY sr; |
| 295 |
> |
errno = 0; |
| 296 |
> |
setcolor(ctmp, varvalue(m->oargs.sarg[3]), |
| 297 |
> |
varvalue(m->oargs.sarg[4]), |
| 298 |
> |
varvalue(m->oargs.sarg[5])); |
| 299 |
> |
scalecolor(ctmp, nd.rspec); |
| 300 |
> |
if (errno) |
| 301 |
> |
objerror(m, WARNING, "compute error"); |
| 302 |
> |
else if ((dtmp = bright(ctmp)) > FTINY && |
| 303 |
|
rayorigin(&sr, r, REFLECTED, dtmp) == 0) { |
| 304 |
< |
for (i = 0; i < 3; i++) |
| 305 |
< |
sr.rdir[i] = r->rdir[i] + |
| 304 |
> |
for (i = 0; i < 3; i++) |
| 305 |
> |
sr.rdir[i] = r->rdir[i] + |
| 306 |
|
2.0*nd.pdot*nd.pnorm[i]; |
| 307 |
< |
rayvalue(&sr); |
| 308 |
< |
multcolor(sr.rcol, ctmp); |
| 309 |
< |
addcolor(r->rcol, sr.rcol); |
| 315 |
< |
} |
| 307 |
> |
rayvalue(&sr); |
| 308 |
> |
multcolor(sr.rcol, ctmp); |
| 309 |
> |
addcolor(r->rcol, sr.rcol); |
| 310 |
|
} |
| 311 |
|
} |
| 312 |
|
/* compute ambient */ |
