41 |
|
RAY *r, |
42 |
|
int rt, |
43 |
|
const RAY *ro, |
44 |
< |
const COLOR rc |
44 |
> |
const SCOLOR rc |
45 |
|
) |
46 |
|
{ |
47 |
|
double rw, re; |
48 |
|
/* assign coefficient/weight */ |
49 |
|
if (rc == NULL) { |
50 |
|
rw = 1.0; |
51 |
< |
setcolor(r->rcoef, 1., 1., 1.); |
51 |
> |
setscolor(r->rcoef, 1., 1., 1.); |
52 |
|
} else { |
53 |
< |
rw = intens(rc); |
53 |
> |
rw = sintens((COLORV *)rc); |
54 |
|
if (rw > 1.0) |
55 |
|
rw = 1.0; /* avoid calculation growth */ |
56 |
|
if (rc != r->rcoef) |
57 |
< |
copycolor(r->rcoef, rc); |
57 |
> |
copyscolor(r->rcoef, rc); |
58 |
|
} |
59 |
|
if ((r->parent = ro) == NULL) { /* primary ray */ |
60 |
|
r->rlvl = 0; |
68 |
|
r->gecc = seccg; |
69 |
|
r->slights = NULL; |
70 |
|
} else { /* spawned ray */ |
71 |
< |
if (ro->rot >= FHUGE) { |
71 |
> |
if (ro->rot >= FHUGE*.99) { |
72 |
|
memset(r, 0, sizeof(RAY)); |
73 |
|
return(-1); /* illegal continuation */ |
74 |
|
} |
75 |
|
r->rlvl = ro->rlvl; |
76 |
+ |
r->rsrc = ro->rsrc; |
77 |
|
if (rt & RAYREFL) { |
78 |
|
r->rlvl++; |
79 |
< |
r->rsrc = -1; |
79 |
> |
if (r->rsrc >= 0) /* malfunctioning material? */ |
80 |
> |
r->rsrc = -1; |
81 |
|
r->clipset = ro->clipset; |
82 |
|
r->rmax = 0.0; |
83 |
|
} else { |
82 |
– |
r->rsrc = ro->rsrc; |
84 |
|
r->clipset = ro->newcset; |
85 |
< |
r->rmax = ro->rmax <= FTINY ? 0.0 : ro->rmax - ro->rot; |
85 |
> |
r->rmax = (ro->rmax > FTINY)*(ro->rmax - ro->rot); |
86 |
|
} |
87 |
|
r->revf = ro->revf; |
88 |
|
copycolor(r->cext, ro->cext); |
117 |
|
if (photonMapping && rt != TRANS) |
118 |
|
return(-1); |
119 |
|
} |
120 |
< |
if (maxdepth <= 0 && rc != NULL) { /* Russian roulette */ |
120 |
> |
if ((maxdepth <= 0) & (rc != NULL)) { /* Russian roulette */ |
121 |
|
if (minweight <= 0.0) |
122 |
|
error(USER, "zero ray weight in Russian roulette"); |
123 |
< |
if (maxdepth < 0 && r->rlvl > -maxdepth) |
123 |
> |
if ((maxdepth < 0) & (r->rlvl > -maxdepth)) |
124 |
|
return(-1); /* upper reflection limit */ |
125 |
|
if (r->rweight >= minweight) |
126 |
|
return(0); |
127 |
|
if (frandom() > r->rweight/minweight) |
128 |
|
return(-1); |
129 |
|
rw = minweight/r->rweight; /* promote survivor */ |
130 |
< |
scalecolor(r->rcoef, rw); |
130 |
> |
scalescolor(r->rcoef, rw); |
131 |
|
r->rweight = minweight; |
132 |
|
return(0); |
133 |
|
} |
134 |
< |
return(r->rweight >= minweight && r->rlvl <= abs(maxdepth) ? 0 : -1); |
134 |
> |
return((r->rweight >= minweight) & (r->rlvl <= abs(maxdepth)) ? 0 : -1); |
135 |
|
} |
136 |
|
|
137 |
|
|
147 |
|
r->ro = NULL; |
148 |
|
r->rox = NULL; |
149 |
|
r->rxt = r->rmt = r->rot = FHUGE; |
150 |
+ |
VCOPY(r->rop, r->rorg); |
151 |
+ |
r->ron[0] = -r->rdir[0]; r->ron[1] = -r->rdir[1]; r->ron[2] = -r->rdir[2]; |
152 |
+ |
r->rod = 1.0; |
153 |
|
r->pert[0] = r->pert[1] = r->pert[2] = 0.0; |
154 |
+ |
r->rflips = 0; |
155 |
|
r->uv[0] = r->uv[1] = 0.0; |
156 |
< |
setcolor(r->pcol, 1.0, 1.0, 1.0); |
157 |
< |
setcolor(r->mcol, 0.0, 0.0, 0.0); |
158 |
< |
setcolor(r->rcol, 0.0, 0.0, 0.0); |
156 |
> |
setscolor(r->pcol, 1.0, 1.0, 1.0); |
157 |
> |
scolorblack(r->mcol); |
158 |
> |
scolorblack(r->rcol); |
159 |
|
} |
160 |
|
|
161 |
|
|
200 |
|
rayorigin(&tr, TRANS, r, NULL); /* always continue */ |
201 |
|
VCOPY(tr.rdir, r->rdir); |
202 |
|
rayvalue(&tr); |
203 |
< |
copycolor(r->mcol, tr.mcol); |
204 |
< |
copycolor(r->rcol, tr.rcol); |
203 |
> |
copyscolor(r->mcol, tr.mcol); |
204 |
> |
copyscolor(r->rcol, tr.rcol); |
205 |
|
r->rmt = r->rot + tr.rmt; |
206 |
|
r->rxt = r->rot + tr.rxt; |
207 |
|
} |
213 |
|
RAY *r |
214 |
|
) |
215 |
|
{ |
216 |
< |
if (ofun[m->otype].flags & (T_M|T_X) && m->otype != MAT_CLIP) { |
217 |
< |
if (istransp(m->otype) || isBSDFproxy(m)) { |
216 |
> |
if (m->otype != MAT_CLIP && ismaterial(m->otype)) { |
217 |
> |
if (istransp(m) || isBSDFproxy(m)) { |
218 |
|
raytrans(r); |
219 |
|
return(1); |
220 |
|
} |
221 |
< |
if (!islight(m->otype)) |
221 |
> |
if (!islight(m->otype)) { |
222 |
> |
setscolor(r->pcol, 1.0, 1.0, 1.0); |
223 |
|
return((*ofun[Lamb.otype].funp)(&Lamb, r)); |
224 |
+ |
} |
225 |
|
} |
226 |
|
return(0); /* not a qualifying surface */ |
227 |
|
} |
236 |
|
int tst_irrad = do_irrad && !(r->crtype & ~(PRIMARY|TRANS)); |
237 |
|
OBJREC *m; |
238 |
|
|
239 |
< |
r->rxt = r->rmt = r->rot; /* preset effective ray length */ |
239 |
> |
r->rxt = r->rot; /* preset effective ray length */ |
240 |
|
for ( ; mod != OVOID; mod = m->omod) { |
241 |
|
m = objptr(mod); |
242 |
|
/****** unnecessary test since modifier() is always called |
261 |
|
RAY *r |
262 |
|
) |
263 |
|
{ |
264 |
< |
COLOR ce, ca; |
264 |
> |
SCOLOR ce, ca; |
265 |
|
double re, ge, be; |
266 |
|
|
267 |
|
if (intens(r->cext) <= 1./FHUGE) |
274 |
|
ge *= 1. - colval(r->albedo,GRN); |
275 |
|
be *= 1. - colval(r->albedo,BLU); |
276 |
|
} |
277 |
< |
setcolor(ce, re<=FTINY ? 1. : re>92. ? 0. : exp(-re), |
277 |
> |
setscolor(ce, re<=FTINY ? 1. : re>92. ? 0. : exp(-re), |
278 |
|
ge<=FTINY ? 1. : ge>92. ? 0. : exp(-ge), |
279 |
|
be<=FTINY ? 1. : be>92. ? 0. : exp(-be)); |
280 |
< |
multcolor(r->rcol, ce); /* path extinction */ |
280 |
> |
smultscolor(r->rcol, ce); /* path extinction */ |
281 |
|
if (r->crtype & SHADOW || intens(r->albedo) <= FTINY) |
282 |
|
return; /* no scattering */ |
283 |
|
|
284 |
|
/* PMAP: indirect inscattering accounted for by volume photons? */ |
285 |
|
if (!volumePhotonMapping) { |
286 |
< |
setcolor(ca, |
287 |
< |
colval(r->albedo,RED)*colval(ambval,RED)*(1.-colval(ce,RED)), |
288 |
< |
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-colval(ce,GRN)), |
289 |
< |
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-colval(ce,BLU))); |
290 |
< |
addcolor(r->rcol, ca); /* ambient in scattering */ |
286 |
> |
setscolor(ca, |
287 |
> |
colval(r->albedo,RED)*colval(ambval,RED)*(1.-scolval(ce,RED)), |
288 |
> |
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-scolval(ce,GRN)), |
289 |
> |
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-scolval(ce,BLU))); |
290 |
> |
saddscolor(r->rcol, ca); /* ambient in scattering */ |
291 |
|
} |
292 |
|
|
293 |
|
srcscatter(r); /* source in scattering */ |
342 |
|
fr = *r; |
343 |
|
if (coef > FTINY) { |
344 |
|
fr.rweight *= coef; |
345 |
< |
scalecolor(fr.rcoef, coef); |
345 |
> |
scalescolor(fr.rcoef, coef); |
346 |
|
foremat = rayshade(&fr, fore); |
347 |
|
} |
348 |
|
/* background */ |
349 |
|
br = *r; |
350 |
|
if (coef < 1.0-FTINY) { |
351 |
|
br.rweight *= 1.0-coef; |
352 |
< |
scalecolor(br.rcoef, 1.0-coef); |
352 |
> |
scalescolor(br.rcoef, 1.0-coef); |
353 |
|
backmat = rayshade(&br, back); |
354 |
|
} |
355 |
|
/* check for transparency */ |
363 |
|
for (i = 0; i < 3; i++) |
364 |
|
r->pert[i] = coef*fr.pert[i] + (1.0-coef)*br.pert[i]; |
365 |
|
/* mix pattern colors */ |
366 |
< |
scalecolor(fr.pcol, coef); |
367 |
< |
scalecolor(br.pcol, 1.0-coef); |
368 |
< |
copycolor(r->pcol, fr.pcol); |
369 |
< |
addcolor(r->pcol, br.pcol); |
366 |
> |
scalescolor(fr.pcol, coef); |
367 |
> |
scalescolor(br.pcol, 1.0-coef); |
368 |
> |
copyscolor(r->pcol, fr.pcol); |
369 |
> |
saddscolor(r->pcol, br.pcol); |
370 |
|
/* return value tells if material */ |
371 |
|
if (!foremat & !backmat) |
372 |
|
return(0); |
373 |
|
/* mix returned ray values */ |
374 |
< |
scalecolor(fr.rcol, coef); |
375 |
< |
scalecolor(br.rcol, 1.0-coef); |
376 |
< |
copycolor(r->rcol, fr.rcol); |
377 |
< |
addcolor(r->rcol, br.rcol); |
378 |
< |
scalecolor(fr.mcol, coef); |
379 |
< |
scalecolor(br.mcol, 1.0-coef); |
380 |
< |
copycolor(r->mcol, fr.mcol); |
381 |
< |
addcolor(r->mcol, br.mcol); |
382 |
< |
mfore = bright(fr.mcol); mback = bright(br.mcol); |
374 |
> |
scalescolor(fr.rcol, coef); |
375 |
> |
scalescolor(br.rcol, 1.0-coef); |
376 |
> |
copyscolor(r->rcol, fr.rcol); |
377 |
> |
saddscolor(r->rcol, br.rcol); |
378 |
> |
scalescolor(fr.mcol, coef); |
379 |
> |
scalescolor(br.mcol, 1.0-coef); |
380 |
> |
copyscolor(r->mcol, fr.mcol); |
381 |
> |
saddscolor(r->mcol, br.mcol); |
382 |
> |
mfore = pbright(fr.mcol); mback = pbright(br.mcol); |
383 |
|
r->rmt = mfore > mback ? fr.rmt : br.rmt; |
384 |
< |
r->rxt = bright(fr.rcol)-mfore > bright(br.rcol)-mback ? |
384 |
> |
r->rxt = pbright(fr.rcol)-mfore > pbright(br.rcol)-mback ? |
385 |
|
fr.rxt : br.rxt; |
386 |
|
return(1); |
387 |
|
} |
405 |
|
|
406 |
|
void |
407 |
|
raycontrib( /* compute (cumulative) ray contribution */ |
408 |
< |
RREAL rc[3], |
408 |
> |
SCOLOR rc, |
409 |
|
const RAY *r, |
410 |
|
int flags |
411 |
|
) |
412 |
|
{ |
413 |
< |
double eext[3]; |
407 |
< |
int i; |
413 |
> |
static int warnedPM = 0; |
414 |
|
|
415 |
< |
eext[0] = eext[1] = eext[2] = 0.; |
410 |
< |
rc[0] = rc[1] = rc[2] = 1.; |
415 |
> |
setscolor(rc, 1., 1., 1.); |
416 |
|
|
417 |
|
while (r != NULL && r->crtype&flags) { |
418 |
< |
for (i = 3; i--; ) { |
419 |
< |
rc[i] *= colval(r->rcoef,i); |
420 |
< |
eext[i] += r->rot * colval(r->cext,i); |
418 |
> |
smultscolor(rc, r->rcoef); |
419 |
> |
/* check for participating medium */ |
420 |
> |
if (bright(r->cext) > FTINY) { |
421 |
> |
double re = r->rot*colval(r->cext,RED), |
422 |
> |
ge = r->rot*colval(r->cext,GRN), |
423 |
> |
be = r->rot*colval(r->cext,BLU); |
424 |
> |
SCOLOR ce; |
425 |
> |
setscolor(ce, re<=FTINY ? 1. : re>92. ? 0. : exp(-re), |
426 |
> |
ge<=FTINY ? 1. : ge>92. ? 0. : exp(-ge), |
427 |
> |
be<=FTINY ? 1. : be>92. ? 0. : exp(-be)); |
428 |
> |
smultscolor(rc, ce); |
429 |
|
} |
430 |
+ |
if (!warnedPM && bright(r->albedo) > FTINY) { |
431 |
+ |
error(WARNING, |
432 |
+ |
"ray contribution calculation does not support participating media"); |
433 |
+ |
warnedPM++; |
434 |
+ |
} |
435 |
|
r = r->parent; |
436 |
|
} |
419 |
– |
for (i = 3; i--; ) |
420 |
– |
rc[i] *= (eext[i] <= FTINY) ? 1. : |
421 |
– |
(eext[i] > 92.) ? 0. : exp(-eext[i]); |
437 |
|
} |
438 |
|
|
439 |
|
|
464 |
|
return(r->rod); |
465 |
|
} |
466 |
|
newdot = -DOT(norm, r->rdir); |
467 |
< |
if ((newdot > 0.0) != (r->rod > 0.0)) { /* fix orientation */ |
467 |
> |
if ((newdot > 0.0) ^ (r->rod > 0.0)) { /* fix orientation */ |
468 |
|
for (i = 0; i < 3; i++) |
469 |
|
norm[i] += 2.0*newdot*r->rdir[i]; |
470 |
|
newdot = -newdot; |
523 |
|
r->pert[0] = -r->pert[0]; |
524 |
|
r->pert[1] = -r->pert[1]; |
525 |
|
r->pert[2] = -r->pert[2]; |
526 |
+ |
r->rflips++; |
527 |
|
} |
528 |
|
|
529 |
+ |
|
530 |
+ |
int |
531 |
+ |
rayreject( /* check if candidate hit is worse than current */ |
532 |
+ |
OBJREC *o, |
533 |
+ |
RAY *r, |
534 |
+ |
double t, |
535 |
+ |
double rod |
536 |
+ |
) |
537 |
+ |
{ |
538 |
+ |
OBJREC *mnew, *mray; |
539 |
+ |
|
540 |
+ |
if ((t <= FTINY) | (t > r->rot + FTINY)) |
541 |
+ |
return(1); |
542 |
+ |
if (t < r->rot - FTINY) /* is new hit significantly closer? */ |
543 |
+ |
return(0); |
544 |
+ |
/* coincident point, so decide... */ |
545 |
+ |
if (o == r->ro) |
546 |
+ |
return(1); /* shouldn't happen */ |
547 |
+ |
if (r->ro == NULL) |
548 |
+ |
return(0); /* ditto */ |
549 |
+ |
mnew = findmaterial(o); |
550 |
+ |
mray = findmaterial(r->ro); /* check material transparencies */ |
551 |
+ |
if (mnew == NULL) { |
552 |
+ |
if (mray != NULL) |
553 |
+ |
return(1); /* old has material, new does not */ |
554 |
+ |
} else if (mray == NULL) { |
555 |
+ |
return(0); /* new has material, old does not */ |
556 |
+ |
} else if (istransp(mnew)) { |
557 |
+ |
if (!istransp(mray)) |
558 |
+ |
return(1); /* new is transparent, old is not */ |
559 |
+ |
} else if (istransp(mray)) { |
560 |
+ |
return(0); /* old is transparent, new is not */ |
561 |
+ |
} |
562 |
+ |
if (rod <= 0) { /* check which side we hit */ |
563 |
+ |
if (r->rod > 0) |
564 |
+ |
return(1); /* old hit front, new did not */ |
565 |
+ |
} else if (r->rod <= 0) { |
566 |
+ |
return(0); /* new hit front, old did not */ |
567 |
+ |
} |
568 |
+ |
/* earlier modifier definition wins tie */ |
569 |
+ |
return (r->ro->omod >= o->omod); |
570 |
+ |
} |
571 |
|
|
572 |
|
void |
573 |
|
rayhit( /* standard ray hit test */ |