| 14 |
|
#include "otypes.h" |
| 15 |
|
#include "otspecial.h" |
| 16 |
|
#include "random.h" |
| 17 |
+ |
#include "pmap.h" |
| 18 |
|
|
| 19 |
|
#define MAXCSET ((MAXSET+1)*2-1) /* maximum check set size */ |
| 20 |
|
|
| 36 |
|
static void checkset(OBJECT *os, OBJECT *cs); |
| 37 |
|
|
| 38 |
|
|
| 39 |
< |
extern int |
| 39 |
> |
int |
| 40 |
|
rayorigin( /* start new ray from old one */ |
| 41 |
|
RAY *r, |
| 42 |
|
int rt, |
| 51 |
|
setcolor(r->rcoef, 1., 1., 1.); |
| 52 |
|
} else { |
| 53 |
|
rw = intens(rc); |
| 54 |
+ |
if (rw > 1.0) |
| 55 |
+ |
rw = 1.0; /* avoid calculation growth */ |
| 56 |
|
if (rc != r->rcoef) |
| 57 |
|
copycolor(r->rcoef, rc); |
| 58 |
|
} |
| 109 |
|
return(-1); |
| 110 |
|
if (r->crtype & SHADOW) /* shadow commitment */ |
| 111 |
|
return(0); |
| 112 |
+ |
/* ambient in photon map? */ |
| 113 |
+ |
if (ro != NULL && ro->crtype & AMBIENT) { |
| 114 |
+ |
if (causticPhotonMapping) |
| 115 |
+ |
return(-1); |
| 116 |
+ |
if (photonMapping && rt != TRANS) |
| 117 |
+ |
return(-1); |
| 118 |
+ |
} |
| 119 |
|
if (maxdepth <= 0 && rc != NULL) { /* Russian roulette */ |
| 120 |
|
if (minweight <= 0.0) |
| 121 |
|
error(USER, "zero ray weight in Russian roulette"); |
| 130 |
|
r->rweight = minweight; |
| 131 |
|
return(0); |
| 132 |
|
} |
| 133 |
< |
return(r->rlvl <= abs(maxdepth) && r->rweight >= minweight ? 0 : -1); |
| 133 |
> |
return(r->rweight >= minweight && r->rlvl <= abs(maxdepth) ? 0 : -1); |
| 134 |
|
} |
| 135 |
|
|
| 136 |
|
|
| 137 |
< |
extern void |
| 137 |
> |
void |
| 138 |
|
rayclear( /* clear a ray for (re)evaluation */ |
| 139 |
< |
register RAY *r |
| 139 |
> |
RAY *r |
| 140 |
|
) |
| 141 |
|
{ |
| 142 |
|
r->rno = raynum++; |
| 153 |
|
} |
| 154 |
|
|
| 155 |
|
|
| 156 |
< |
extern void |
| 156 |
> |
void |
| 157 |
|
raytrace( /* trace a ray and compute its value */ |
| 158 |
|
RAY *r |
| 159 |
|
) |
| 173 |
|
} |
| 174 |
|
|
| 175 |
|
|
| 176 |
< |
extern void |
| 176 |
> |
void |
| 177 |
|
raycont( /* check for clipped object and continue */ |
| 178 |
< |
register RAY *r |
| 178 |
> |
RAY *r |
| 179 |
|
) |
| 180 |
|
{ |
| 181 |
|
if ((r->clipset != NULL && inset(r->clipset, r->ro->omod)) || |
| 184 |
|
} |
| 185 |
|
|
| 186 |
|
|
| 187 |
< |
extern void |
| 187 |
> |
void |
| 188 |
|
raytrans( /* transmit ray as is */ |
| 189 |
< |
register RAY *r |
| 189 |
> |
RAY *r |
| 190 |
|
) |
| 191 |
|
{ |
| 192 |
|
RAY tr; |
| 193 |
|
|
| 194 |
< |
if (rayorigin(&tr, TRANS, r, NULL) == 0) { |
| 195 |
< |
VCOPY(tr.rdir, r->rdir); |
| 196 |
< |
rayvalue(&tr); |
| 197 |
< |
copycolor(r->rcol, tr.rcol); |
| 198 |
< |
r->rt = r->rot + tr.rt; |
| 189 |
< |
} |
| 194 |
> |
rayorigin(&tr, TRANS, r, NULL); /* always continue */ |
| 195 |
> |
VCOPY(tr.rdir, r->rdir); |
| 196 |
> |
rayvalue(&tr); |
| 197 |
> |
copycolor(r->rcol, tr.rcol); |
| 198 |
> |
r->rt = r->rot + tr.rt; |
| 199 |
|
} |
| 200 |
|
|
| 201 |
|
|
| 202 |
< |
extern int |
| 202 |
> |
/* Macro for test to see if BSDF material uses proxy */ |
| 203 |
> |
#define isBSDFproxy(m) ((m)->otype == MAT_BSDF && (m)->oargs.nsargs && \ |
| 204 |
> |
strcmp((m)->oargs.sarg[0], "0")) |
| 205 |
> |
|
| 206 |
> |
|
| 207 |
> |
int |
| 208 |
|
rayshade( /* shade ray r with material mod */ |
| 209 |
< |
register RAY *r, |
| 209 |
> |
RAY *r, |
| 210 |
|
int mod |
| 211 |
|
) |
| 212 |
|
{ |
| 213 |
< |
register OBJREC *m; |
| 213 |
> |
OBJREC *m; |
| 214 |
|
|
| 215 |
< |
r->rt = r->rot; /* set effective ray length */ |
| 215 |
> |
r->rt = r->rot; /* preset effective ray length */ |
| 216 |
|
for ( ; mod != OVOID; mod = m->omod) { |
| 217 |
|
m = objptr(mod); |
| 218 |
|
/****** unnecessary test since modifier() is always called |
| 223 |
|
******/ |
| 224 |
|
/* hack for irradiance calculation */ |
| 225 |
|
if (do_irrad && !(r->crtype & ~(PRIMARY|TRANS)) && |
| 226 |
+ |
(ofun[m->otype].flags & (T_M|T_X)) && |
| 227 |
|
m->otype != MAT_CLIP && |
| 228 |
< |
(ofun[m->otype].flags & (T_M|T_X))) { |
| 228 |
> |
!isBSDFproxy(m)) { |
| 229 |
|
if (irr_ignore(m->otype)) { |
| 230 |
|
raytrans(r); |
| 231 |
|
return(1); |
| 240 |
|
} |
| 241 |
|
|
| 242 |
|
|
| 243 |
< |
extern void |
| 243 |
> |
void |
| 244 |
|
rayparticipate( /* compute ray medium participation */ |
| 245 |
< |
register RAY *r |
| 245 |
> |
RAY *r |
| 246 |
|
) |
| 247 |
|
{ |
| 248 |
|
COLOR ce, ca; |
| 264 |
|
multcolor(r->rcol, ce); /* path extinction */ |
| 265 |
|
if (r->crtype & SHADOW || intens(r->albedo) <= FTINY) |
| 266 |
|
return; /* no scattering */ |
| 267 |
< |
setcolor(ca, |
| 268 |
< |
colval(r->albedo,RED)*colval(ambval,RED)*(1.-colval(ce,RED)), |
| 269 |
< |
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-colval(ce,GRN)), |
| 270 |
< |
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-colval(ce,BLU))); |
| 271 |
< |
addcolor(r->rcol, ca); /* ambient in scattering */ |
| 267 |
> |
|
| 268 |
> |
/* PMAP: indirect inscattering accounted for by volume photons? */ |
| 269 |
> |
if (!volumePhotonMapping) { |
| 270 |
> |
setcolor(ca, |
| 271 |
> |
colval(r->albedo,RED)*colval(ambval,RED)*(1.-colval(ce,RED)), |
| 272 |
> |
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-colval(ce,GRN)), |
| 273 |
> |
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-colval(ce,BLU))); |
| 274 |
> |
addcolor(r->rcol, ca); /* ambient in scattering */ |
| 275 |
> |
} |
| 276 |
> |
|
| 277 |
|
srcscatter(r); /* source in scattering */ |
| 278 |
|
} |
| 279 |
|
|
| 280 |
|
|
| 281 |
< |
extern void |
| 281 |
> |
void |
| 282 |
|
raytexture( /* get material modifiers */ |
| 283 |
|
RAY *r, |
| 284 |
|
OBJECT mod |
| 285 |
|
) |
| 286 |
|
{ |
| 287 |
< |
register OBJREC *m; |
| 287 |
> |
OBJREC *m; |
| 288 |
|
/* execute textures and patterns */ |
| 289 |
|
for ( ; mod != OVOID; mod = m->omod) { |
| 290 |
|
m = objptr(mod); |
| 303 |
|
} |
| 304 |
|
|
| 305 |
|
|
| 306 |
< |
extern int |
| 306 |
> |
int |
| 307 |
|
raymixture( /* mix modifiers */ |
| 308 |
< |
register RAY *r, |
| 308 |
> |
RAY *r, |
| 309 |
|
OBJECT fore, |
| 310 |
|
OBJECT back, |
| 311 |
|
double coef |
| 313 |
|
{ |
| 314 |
|
RAY fr, br; |
| 315 |
|
int foremat, backmat; |
| 316 |
< |
register int i; |
| 316 |
> |
int i; |
| 317 |
|
/* bound coefficient */ |
| 318 |
|
if (coef > 1.0) |
| 319 |
|
coef = 1.0; |
| 363 |
|
} |
| 364 |
|
|
| 365 |
|
|
| 366 |
< |
extern double |
| 366 |
> |
double |
| 367 |
|
raydist( /* compute (cumulative) ray distance */ |
| 368 |
< |
register const RAY *r, |
| 369 |
< |
register int flags |
| 368 |
> |
const RAY *r, |
| 369 |
> |
int flags |
| 370 |
|
) |
| 371 |
|
{ |
| 372 |
|
double sum = 0.0; |
| 379 |
|
} |
| 380 |
|
|
| 381 |
|
|
| 382 |
< |
extern void |
| 382 |
> |
void |
| 383 |
|
raycontrib( /* compute (cumulative) ray contribution */ |
| 384 |
|
RREAL rc[3], |
| 385 |
|
const RAY *r, |
| 405 |
|
} |
| 406 |
|
|
| 407 |
|
|
| 408 |
< |
extern double |
| 408 |
> |
double |
| 409 |
|
raynormal( /* compute perturbed normal for ray */ |
| 410 |
|
FVECT norm, |
| 411 |
< |
register RAY *r |
| 411 |
> |
RAY *r |
| 412 |
|
) |
| 413 |
|
{ |
| 414 |
|
double newdot; |
| 415 |
< |
register int i; |
| 415 |
> |
int i; |
| 416 |
|
|
| 417 |
|
/* The perturbation is added to the surface normal to obtain |
| 418 |
|
* the new normal. If the new normal would affect the surface |
| 441 |
|
} |
| 442 |
|
|
| 443 |
|
|
| 444 |
< |
extern void |
| 444 |
> |
void |
| 445 |
|
newrayxf( /* get new tranformation matrix for ray */ |
| 446 |
|
RAY *r |
| 447 |
|
) |
| 450 |
|
struct xfn *next; |
| 451 |
|
FULLXF xf; |
| 452 |
|
} xfseed = { &xfseed }, *xflast = &xfseed; |
| 453 |
< |
register struct xfn *xp; |
| 454 |
< |
register const RAY *rp; |
| 453 |
> |
struct xfn *xp; |
| 454 |
> |
const RAY *rp; |
| 455 |
|
|
| 456 |
|
/* |
| 457 |
|
* Search for transform in circular list that |
| 462 |
|
if (rp->rox == &xp->xf) { /* xp in use */ |
| 463 |
|
xp = xp->next; /* move to next */ |
| 464 |
|
if (xp == xflast) { /* need new one */ |
| 465 |
< |
xp = (struct xfn *)malloc(sizeof(struct xfn)); |
| 465 |
> |
xp = (struct xfn *)bmalloc(sizeof(struct xfn)); |
| 466 |
|
if (xp == NULL) |
| 467 |
|
error(SYSTEM, |
| 468 |
|
"out of memory in newrayxf"); |
| 479 |
|
} |
| 480 |
|
|
| 481 |
|
|
| 482 |
< |
extern void |
| 482 |
> |
void |
| 483 |
|
flipsurface( /* reverse surface orientation */ |
| 484 |
< |
register RAY *r |
| 484 |
> |
RAY *r |
| 485 |
|
) |
| 486 |
|
{ |
| 487 |
|
r->rod = -r->rod; |
| 494 |
|
} |
| 495 |
|
|
| 496 |
|
|
| 497 |
< |
extern void |
| 497 |
> |
void |
| 498 |
|
rayhit( /* standard ray hit test */ |
| 499 |
|
OBJECT *oset, |
| 500 |
|
RAY *r |
| 511 |
|
} |
| 512 |
|
|
| 513 |
|
|
| 514 |
< |
extern int |
| 514 |
> |
int |
| 515 |
|
localhit( /* check for hit in the octree */ |
| 516 |
< |
register RAY *r, |
| 517 |
< |
register CUBE *scene |
| 516 |
> |
RAY *r, |
| 517 |
> |
CUBE *scene |
| 518 |
|
) |
| 519 |
|
{ |
| 520 |
|
OBJECT cxset[MAXCSET+1]; /* set of checked objects */ |
| 521 |
|
FVECT curpos; /* current cube position */ |
| 522 |
|
int sflags; /* sign flags */ |
| 523 |
|
double t, dt; |
| 524 |
< |
register int i; |
| 524 |
> |
int i; |
| 525 |
|
|
| 526 |
|
nrays++; /* increment trace counter */ |
| 527 |
|
sflags = 0; |
| 579 |
|
FVECT pos, /* current position, modified herein */ |
| 580 |
|
OBJECT *cxs, /* checked objects, modified by checkhit */ |
| 581 |
|
int dirf, /* direction indicators to speed tests */ |
| 582 |
< |
register RAY *r, |
| 583 |
< |
register CUBE *cu |
| 582 |
> |
RAY *r, |
| 583 |
> |
CUBE *cu |
| 584 |
|
) |
| 585 |
|
{ |
| 586 |
|
int ax; |
| 588 |
|
|
| 589 |
|
if (istree(cu->cutree)) { /* recurse on subcubes */ |
| 590 |
|
CUBE cukid; |
| 591 |
< |
register int br, sgn; |
| 591 |
> |
int br, sgn; |
| 592 |
|
|
| 593 |
|
cukid.cusize = cu->cusize * 0.5; /* find subcube */ |
| 594 |
|
VCOPY(cukid.cuorg, cu->cuorg); |
| 661 |
|
|
| 662 |
|
static int |
| 663 |
|
checkhit( /* check for hit in full cube */ |
| 664 |
< |
register RAY *r, |
| 664 |
> |
RAY *r, |
| 665 |
|
CUBE *cu, |
| 666 |
|
OBJECT *cxs |
| 667 |
|
) |
| 682 |
|
|
| 683 |
|
static void |
| 684 |
|
checkset( /* modify checked set and set to check */ |
| 685 |
< |
register OBJECT *os, /* os' = os - cs */ |
| 686 |
< |
register OBJECT *cs /* cs' = cs + os */ |
| 685 |
> |
OBJECT *os, /* os' = os - cs */ |
| 686 |
> |
OBJECT *cs /* cs' = cs + os */ |
| 687 |
|
) |
| 688 |
|
{ |
| 689 |
|
OBJECT cset[MAXCSET+MAXSET+1]; |
| 690 |
< |
register int i, j; |
| 690 |
> |
int i, j; |
| 691 |
|
int k; |
| 692 |
|
/* copy os in place, cset <- cs */ |
| 693 |
|
cset[0] = 0; |