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(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; |
126 |
|
if (frandom() > r->rweight/minweight) |
127 |
|
return(-1); |
128 |
|
rw = minweight/r->rweight; /* promote survivor */ |
129 |
< |
scalecolor(r->rcoef, rw); |
129 |
> |
scalescolor(r->rcoef, rw); |
130 |
|
r->rweight = minweight; |
131 |
|
return(0); |
132 |
|
} |
152 |
|
r->pert[0] = r->pert[1] = r->pert[2] = 0.0; |
153 |
|
r->rflips = 0; |
154 |
|
r->uv[0] = r->uv[1] = 0.0; |
155 |
< |
setcolor(r->pcol, 1.0, 1.0, 1.0); |
156 |
< |
setcolor(r->mcol, 0.0, 0.0, 0.0); |
157 |
< |
setcolor(r->rcol, 0.0, 0.0, 0.0); |
155 |
> |
setscolor(r->pcol, 1.0, 1.0, 1.0); |
156 |
> |
scolorblack(r->mcol); |
157 |
> |
scolorblack(r->rcol); |
158 |
|
} |
159 |
|
|
160 |
|
|
199 |
|
rayorigin(&tr, TRANS, r, NULL); /* always continue */ |
200 |
|
VCOPY(tr.rdir, r->rdir); |
201 |
|
rayvalue(&tr); |
202 |
< |
copycolor(r->mcol, tr.mcol); |
203 |
< |
copycolor(r->rcol, tr.rcol); |
202 |
> |
copyscolor(r->mcol, tr.mcol); |
203 |
> |
copyscolor(r->rcol, tr.rcol); |
204 |
|
r->rmt = r->rot + tr.rmt; |
205 |
|
r->rxt = r->rot + tr.rxt; |
206 |
|
} |
217 |
|
raytrans(r); |
218 |
|
return(1); |
219 |
|
} |
220 |
< |
if (!islight(m->otype)) |
220 |
> |
if (!islight(m->otype)) { |
221 |
> |
setscolor(r->pcol, 1.0, 1.0, 1.0); |
222 |
|
return((*ofun[Lamb.otype].funp)(&Lamb, r)); |
223 |
+ |
} |
224 |
|
} |
225 |
|
return(0); /* not a qualifying surface */ |
226 |
|
} |
260 |
|
RAY *r |
261 |
|
) |
262 |
|
{ |
263 |
< |
COLOR ce, ca; |
263 |
> |
SCOLOR ce, ca; |
264 |
|
double re, ge, be; |
265 |
|
|
266 |
|
if (intens(r->cext) <= 1./FHUGE) |
273 |
|
ge *= 1. - colval(r->albedo,GRN); |
274 |
|
be *= 1. - colval(r->albedo,BLU); |
275 |
|
} |
276 |
< |
setcolor(ce, re<=FTINY ? 1. : re>92. ? 0. : exp(-re), |
276 |
> |
setscolor(ce, re<=FTINY ? 1. : re>92. ? 0. : exp(-re), |
277 |
|
ge<=FTINY ? 1. : ge>92. ? 0. : exp(-ge), |
278 |
|
be<=FTINY ? 1. : be>92. ? 0. : exp(-be)); |
279 |
< |
multcolor(r->rcol, ce); /* path extinction */ |
279 |
> |
smultscolor(r->rcol, ce); /* path extinction */ |
280 |
|
if (r->crtype & SHADOW || intens(r->albedo) <= FTINY) |
281 |
|
return; /* no scattering */ |
282 |
|
|
283 |
|
/* PMAP: indirect inscattering accounted for by volume photons? */ |
284 |
|
if (!volumePhotonMapping) { |
285 |
< |
setcolor(ca, |
285 |
> |
setscolor(ca, |
286 |
|
colval(r->albedo,RED)*colval(ambval,RED)*(1.-colval(ce,RED)), |
287 |
|
colval(r->albedo,GRN)*colval(ambval,GRN)*(1.-colval(ce,GRN)), |
288 |
|
colval(r->albedo,BLU)*colval(ambval,BLU)*(1.-colval(ce,BLU))); |
289 |
< |
addcolor(r->rcol, ca); /* ambient in scattering */ |
289 |
> |
saddscolor(r->rcol, ca); /* ambient in scattering */ |
290 |
|
} |
291 |
|
|
292 |
|
srcscatter(r); /* source in scattering */ |
341 |
|
fr = *r; |
342 |
|
if (coef > FTINY) { |
343 |
|
fr.rweight *= coef; |
344 |
< |
scalecolor(fr.rcoef, coef); |
344 |
> |
scalescolor(fr.rcoef, coef); |
345 |
|
foremat = rayshade(&fr, fore); |
346 |
|
} |
347 |
|
/* background */ |
348 |
|
br = *r; |
349 |
|
if (coef < 1.0-FTINY) { |
350 |
|
br.rweight *= 1.0-coef; |
351 |
< |
scalecolor(br.rcoef, 1.0-coef); |
351 |
> |
scalescolor(br.rcoef, 1.0-coef); |
352 |
|
backmat = rayshade(&br, back); |
353 |
|
} |
354 |
|
/* check for transparency */ |
362 |
|
for (i = 0; i < 3; i++) |
363 |
|
r->pert[i] = coef*fr.pert[i] + (1.0-coef)*br.pert[i]; |
364 |
|
/* mix pattern colors */ |
365 |
< |
scalecolor(fr.pcol, coef); |
366 |
< |
scalecolor(br.pcol, 1.0-coef); |
367 |
< |
copycolor(r->pcol, fr.pcol); |
368 |
< |
addcolor(r->pcol, br.pcol); |
365 |
> |
scalescolor(fr.pcol, coef); |
366 |
> |
scalescolor(br.pcol, 1.0-coef); |
367 |
> |
copyscolor(r->pcol, fr.pcol); |
368 |
> |
saddscolor(r->pcol, br.pcol); |
369 |
|
/* return value tells if material */ |
370 |
|
if (!foremat & !backmat) |
371 |
|
return(0); |
372 |
|
/* mix returned ray values */ |
373 |
< |
scalecolor(fr.rcol, coef); |
374 |
< |
scalecolor(br.rcol, 1.0-coef); |
375 |
< |
copycolor(r->rcol, fr.rcol); |
376 |
< |
addcolor(r->rcol, br.rcol); |
377 |
< |
scalecolor(fr.mcol, coef); |
378 |
< |
scalecolor(br.mcol, 1.0-coef); |
379 |
< |
copycolor(r->mcol, fr.mcol); |
380 |
< |
addcolor(r->mcol, br.mcol); |
381 |
< |
mfore = bright(fr.mcol); mback = bright(br.mcol); |
373 |
> |
scalescolor(fr.rcol, coef); |
374 |
> |
scalescolor(br.rcol, 1.0-coef); |
375 |
> |
copyscolor(r->rcol, fr.rcol); |
376 |
> |
saddscolor(r->rcol, br.rcol); |
377 |
> |
scalescolor(fr.mcol, coef); |
378 |
> |
scalescolor(br.mcol, 1.0-coef); |
379 |
> |
copyscolor(r->mcol, fr.mcol); |
380 |
> |
saddscolor(r->mcol, br.mcol); |
381 |
> |
mfore = pbright(fr.mcol); mback = pbright(br.mcol); |
382 |
|
r->rmt = mfore > mback ? fr.rmt : br.rmt; |
383 |
< |
r->rxt = bright(fr.rcol)-mfore > bright(br.rcol)-mback ? |
383 |
> |
r->rxt = pbright(fr.rcol)-mfore > pbright(br.rcol)-mback ? |
384 |
|
fr.rxt : br.rxt; |
385 |
|
return(1); |
386 |
|
} |
404 |
|
|
405 |
|
void |
406 |
|
raycontrib( /* compute (cumulative) ray contribution */ |
407 |
< |
RREAL rc[3], |
407 |
> |
SCOLOR rc, |
408 |
|
const RAY *r, |
409 |
|
int flags |
410 |
|
) |
411 |
|
{ |
412 |
|
static int warnedPM = 0; |
413 |
|
|
414 |
< |
rc[0] = rc[1] = rc[2] = 1.; |
414 |
> |
setscolor(rc, 1., 1., 1.); |
415 |
|
|
416 |
|
while (r != NULL && r->crtype&flags) { |
417 |
< |
int i = 3; |
416 |
< |
while (i--) |
417 |
< |
rc[i] *= colval(r->rcoef,i); |
417 |
> |
smultscolor(rc, r->rcoef); |
418 |
|
/* check for participating medium */ |
419 |
|
if (!warnedPM && (bright(r->cext) > FTINY) | |
420 |
|
(bright(r->albedo) > FTINY)) { |
521 |
|
rayreject( /* check if candidate hit is worse than current */ |
522 |
|
OBJREC *o, |
523 |
|
RAY *r, |
524 |
< |
double t |
524 |
> |
double t, |
525 |
> |
double rod |
526 |
|
) |
527 |
|
{ |
528 |
|
OBJREC *mnew, *mray; |
536 |
|
return(1); /* shouldn't happen */ |
537 |
|
if (r->ro == NULL) |
538 |
|
return(0); /* ditto */ |
539 |
< |
if ((mnew = findmaterial(o)) == NULL) |
540 |
< |
return(1); /* new has no material */ |
541 |
< |
if ((mray = findmaterial(r->ro)) == NULL) |
542 |
< |
return(0); /* old has no material(!) */ |
543 |
< |
if (istransp(mnew->otype)) |
544 |
< |
return(1); /* new is transparent */ |
545 |
< |
if (istransp(mray->otype)) |
546 |
< |
return(0); /* old is transparent */ |
547 |
< |
/* weakest priority to later modifier definition */ |
539 |
> |
mnew = findmaterial(o); |
540 |
> |
mray = findmaterial(r->ro); /* check material transparencies */ |
541 |
> |
if (mnew == NULL) { |
542 |
> |
if (mray != NULL) |
543 |
> |
return(1); /* old has material, new does not */ |
544 |
> |
} else if (mray == NULL) { |
545 |
> |
return(0); /* new has material, old does not */ |
546 |
> |
} else if (istransp(mnew->otype)) { |
547 |
> |
if (!istransp(mray->otype)) |
548 |
> |
return(1); /* new is transparent, old is not */ |
549 |
> |
} else if (istransp(mray->otype)) { |
550 |
> |
return(0); /* old is transparent, new is not */ |
551 |
> |
} |
552 |
> |
if (rod <= 0) { /* check which side we hit */ |
553 |
> |
if (r->rod > 0) |
554 |
> |
return(1); /* old hit front, new did not */ |
555 |
> |
} else if (r->rod <= 0) { |
556 |
> |
return(0); /* new hit front, old did not */ |
557 |
> |
} |
558 |
> |
/* earlier modifier definition wins tie */ |
559 |
|
return (r->ro->omod >= o->omod); |
560 |
|
} |
561 |
|
|