| 14 |
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#include "otypes.h" |
| 15 |
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#include "otspecial.h" |
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#include "random.h" |
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+ |
#include "pmap.h" |
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#define MAXCSET ((MAXSET+1)*2-1) /* maximum check set size */ |
| 20 |
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| 36 |
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static void checkset(OBJECT *os, OBJECT *cs); |
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| 38 |
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| 39 |
< |
extern int |
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> |
int |
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rayorigin( /* start new ray from old one */ |
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RAY *r, |
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int rt, |
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return(-1); |
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if (r->crtype & SHADOW) /* shadow commitment */ |
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return(0); |
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+ |
/* ambient in photon map? */ |
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if (photonMapping && ro != NULL && ro->crtype & AMBIENT) |
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return(-1); |
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if (maxdepth <= 0 && rc != NULL) { /* Russian roulette */ |
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if (minweight <= 0.0) |
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error(USER, "zero ray weight in Russian roulette"); |
| 128 |
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} |
| 129 |
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| 130 |
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| 131 |
< |
extern void |
| 131 |
> |
void |
| 132 |
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rayclear( /* clear a ray for (re)evaluation */ |
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RAY *r |
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) |
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} |
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| 150 |
< |
extern void |
| 150 |
> |
void |
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raytrace( /* trace a ray and compute its value */ |
| 152 |
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RAY *r |
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) |
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} |
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| 169 |
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| 170 |
< |
extern void |
| 170 |
> |
void |
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raycont( /* check for clipped object and continue */ |
| 172 |
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RAY *r |
| 173 |
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) |
| 178 |
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} |
| 179 |
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| 180 |
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| 181 |
< |
extern void |
| 181 |
> |
void |
| 182 |
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raytrans( /* transmit ray as is */ |
| 183 |
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RAY *r |
| 184 |
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) |
| 185 |
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{ |
| 186 |
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RAY tr; |
| 187 |
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|
| 188 |
< |
if (rayorigin(&tr, TRANS, r, NULL) == 0) { |
| 189 |
< |
VCOPY(tr.rdir, r->rdir); |
| 190 |
< |
rayvalue(&tr); |
| 191 |
< |
copycolor(r->rcol, tr.rcol); |
| 192 |
< |
r->rt = r->rot + tr.rt; |
| 189 |
< |
} |
| 188 |
> |
rayorigin(&tr, TRANS, r, NULL); /* always continue */ |
| 189 |
> |
VCOPY(tr.rdir, r->rdir); |
| 190 |
> |
rayvalue(&tr); |
| 191 |
> |
copycolor(r->rcol, tr.rcol); |
| 192 |
> |
r->rt = r->rot + tr.rt; |
| 193 |
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} |
| 194 |
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| 195 |
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| 196 |
< |
extern int |
| 196 |
> |
int |
| 197 |
|
rayshade( /* shade ray r with material mod */ |
| 198 |
|
RAY *r, |
| 199 |
|
int mod |
| 228 |
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} |
| 229 |
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| 230 |
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| 231 |
< |
extern void |
| 231 |
> |
void |
| 232 |
|
rayparticipate( /* compute ray medium participation */ |
| 233 |
|
RAY *r |
| 234 |
|
) |
| 252 |
|
multcolor(r->rcol, ce); /* path extinction */ |
| 253 |
|
if (r->crtype & SHADOW || intens(r->albedo) <= FTINY) |
| 254 |
|
return; /* no scattering */ |
| 255 |
< |
setcolor(ca, |
| 256 |
< |
colval(r->albedo,RED)*colval(ambval,RED)*(1.-colval(ce,RED)), |
| 257 |
< |
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-colval(ce,GRN)), |
| 258 |
< |
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-colval(ce,BLU))); |
| 259 |
< |
addcolor(r->rcol, ca); /* ambient in scattering */ |
| 255 |
> |
|
| 256 |
> |
/* PMAP: indirect inscattering accounted for by volume photons? */ |
| 257 |
> |
if (!volumePhotonMapping) { |
| 258 |
> |
setcolor(ca, |
| 259 |
> |
colval(r->albedo,RED)*colval(ambval,RED)*(1.-colval(ce,RED)), |
| 260 |
> |
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-colval(ce,GRN)), |
| 261 |
> |
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-colval(ce,BLU))); |
| 262 |
> |
addcolor(r->rcol, ca); /* ambient in scattering */ |
| 263 |
> |
} |
| 264 |
> |
|
| 265 |
|
srcscatter(r); /* source in scattering */ |
| 266 |
|
} |
| 267 |
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|
| 268 |
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|
| 269 |
< |
extern void |
| 269 |
> |
void |
| 270 |
|
raytexture( /* get material modifiers */ |
| 271 |
|
RAY *r, |
| 272 |
|
OBJECT mod |
| 291 |
|
} |
| 292 |
|
|
| 293 |
|
|
| 294 |
< |
extern int |
| 294 |
> |
int |
| 295 |
|
raymixture( /* mix modifiers */ |
| 296 |
|
RAY *r, |
| 297 |
|
OBJECT fore, |
| 351 |
|
} |
| 352 |
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|
| 353 |
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|
| 354 |
< |
extern double |
| 354 |
> |
double |
| 355 |
|
raydist( /* compute (cumulative) ray distance */ |
| 356 |
|
const RAY *r, |
| 357 |
|
int flags |
| 367 |
|
} |
| 368 |
|
|
| 369 |
|
|
| 370 |
< |
extern void |
| 370 |
> |
void |
| 371 |
|
raycontrib( /* compute (cumulative) ray contribution */ |
| 372 |
|
RREAL rc[3], |
| 373 |
|
const RAY *r, |
| 393 |
|
} |
| 394 |
|
|
| 395 |
|
|
| 396 |
< |
extern double |
| 396 |
> |
double |
| 397 |
|
raynormal( /* compute perturbed normal for ray */ |
| 398 |
|
FVECT norm, |
| 399 |
|
RAY *r |
| 429 |
|
} |
| 430 |
|
|
| 431 |
|
|
| 432 |
< |
extern void |
| 432 |
> |
void |
| 433 |
|
newrayxf( /* get new tranformation matrix for ray */ |
| 434 |
|
RAY *r |
| 435 |
|
) |
| 467 |
|
} |
| 468 |
|
|
| 469 |
|
|
| 470 |
< |
extern void |
| 470 |
> |
void |
| 471 |
|
flipsurface( /* reverse surface orientation */ |
| 472 |
|
RAY *r |
| 473 |
|
) |
| 482 |
|
} |
| 483 |
|
|
| 484 |
|
|
| 485 |
< |
extern void |
| 485 |
> |
void |
| 486 |
|
rayhit( /* standard ray hit test */ |
| 487 |
|
OBJECT *oset, |
| 488 |
|
RAY *r |
| 499 |
|
} |
| 500 |
|
|
| 501 |
|
|
| 502 |
< |
extern int |
| 502 |
> |
int |
| 503 |
|
localhit( /* check for hit in the octree */ |
| 504 |
|
RAY *r, |
| 505 |
|
CUBE *scene |