9 |
|
|
10 |
|
#include "ray.h" |
11 |
|
#include "otypes.h" |
12 |
+ |
#include "otspecial.h" |
13 |
|
#include "rtotypes.h" |
14 |
|
#include "source.h" |
15 |
|
#include "random.h" |
43 |
|
static int cntcmp(const void *p1, const void *p2); |
44 |
|
|
45 |
|
|
45 |
– |
OBJREC * /* find an object's actual material */ |
46 |
– |
findmaterial(OBJREC *o) |
47 |
– |
{ |
48 |
– |
while (!ismaterial(o->otype)) { |
49 |
– |
if (o->otype == MOD_ALIAS && o->oargs.nsargs) { |
50 |
– |
OBJECT aobj; |
51 |
– |
OBJREC *ao; |
52 |
– |
aobj = lastmod(objndx(o), o->oargs.sarg[0]); |
53 |
– |
if (aobj < 0) |
54 |
– |
objerror(o, USER, "bad reference"); |
55 |
– |
ao = objptr(aobj); |
56 |
– |
if (ismaterial(ao->otype)) |
57 |
– |
return(ao); |
58 |
– |
if (ao->otype == MOD_ALIAS) { |
59 |
– |
o = ao; |
60 |
– |
continue; |
61 |
– |
} |
62 |
– |
} |
63 |
– |
if (o->omod == OVOID) |
64 |
– |
return(NULL); |
65 |
– |
o = objptr(o->omod); |
66 |
– |
} |
67 |
– |
return(o); /* mixtures will return NULL */ |
68 |
– |
} |
69 |
– |
|
70 |
– |
|
46 |
|
void |
47 |
|
marksources(void) /* find and mark source objects */ |
48 |
|
{ |
60 |
|
if (!issurface(o->otype) || o->omod == OVOID) |
61 |
|
continue; |
62 |
|
/* find material */ |
63 |
< |
m = findmaterial(objptr(o->omod)); |
63 |
> |
m = findmaterial(o); |
64 |
|
if (m == NULL) |
65 |
|
continue; |
66 |
|
if (m->otype == MAT_CLIP) { |
74 |
|
m->otype == MAT_SPOT ? 7 : 3)) |
75 |
|
objerror(m, USER, "bad # arguments"); |
76 |
|
|
77 |
< |
if (m->oargs.farg[0] <= FTINY && m->oargs.farg[1] <= FTINY && |
78 |
< |
m->oargs.farg[2] <= FTINY) |
77 |
> |
if (m->oargs.farg[0] <= FTINY && (m->oargs.farg[1] <= FTINY) & |
78 |
> |
(m->oargs.farg[2] <= FTINY)) |
79 |
|
continue; /* don't bother */ |
80 |
|
if (m->otype == MAT_GLOW && |
81 |
|
o->otype != OBJ_SOURCE && |
100 |
|
foundsource += (ambounce > 0); |
101 |
|
} |
102 |
|
} else if (m->otype == MAT_SPOT) { |
103 |
+ |
if (source[ns].sflags & SDISTANT) |
104 |
+ |
objerror(o, WARNING, |
105 |
+ |
"distant source is a spotlight"); |
106 |
|
source[ns].sflags |= SSPOT; |
107 |
|
if ((source[ns].sl.s = makespot(m)) == NULL) |
108 |
|
goto memerr; |
131 |
|
maxcntr = nsources + MAXSPART; /* start with this many */ |
132 |
|
srccnt = (CONTRIB *)malloc(maxcntr*sizeof(CONTRIB)); |
133 |
|
cntord = (CNTPTR *)malloc(maxcntr*sizeof(CNTPTR)); |
134 |
< |
if ((srccnt == NULL) | (cntord == NULL)) |
135 |
< |
goto memerr; |
158 |
< |
return; |
134 |
> |
if ((srccnt != NULL) & (cntord != NULL)) |
135 |
> |
return; |
136 |
|
memerr: |
137 |
|
error(SYSTEM, "out of memory in marksources"); |
138 |
|
} |
139 |
|
|
140 |
|
|
141 |
|
void |
142 |
+ |
distantsources(void) /* only mark distant sources */ |
143 |
+ |
{ |
144 |
+ |
int i; |
145 |
+ |
OBJREC *o, *m; |
146 |
+ |
int ns; |
147 |
+ |
/* initialize dispatch table */ |
148 |
+ |
initstypes(); |
149 |
+ |
/* sources needed for sourcehit() */ |
150 |
+ |
for (i = 0; i < nsceneobjs; i++) { |
151 |
+ |
|
152 |
+ |
o = objptr(i); |
153 |
+ |
|
154 |
+ |
if ((o->otype != OBJ_SOURCE) | (o->omod == OVOID)) |
155 |
+ |
continue; |
156 |
+ |
/* find material */ |
157 |
+ |
m = findmaterial(o); |
158 |
+ |
if (m == NULL) |
159 |
+ |
continue; |
160 |
+ |
if (!islight(m->otype)) |
161 |
+ |
continue; /* not source modifier */ |
162 |
+ |
|
163 |
+ |
if (m->oargs.nfargs != (m->otype == MAT_GLOW ? 4 : |
164 |
+ |
m->otype == MAT_SPOT ? 7 : 3)) |
165 |
+ |
objerror(m, USER, "bad # arguments"); |
166 |
+ |
|
167 |
+ |
if (m->oargs.farg[0] <= FTINY && (m->oargs.farg[1] <= FTINY) & |
168 |
+ |
(m->oargs.farg[2] <= FTINY)) |
169 |
+ |
continue; /* don't bother */ |
170 |
+ |
if (sfun[o->otype].of == NULL || |
171 |
+ |
sfun[o->otype].of->setsrc == NULL) |
172 |
+ |
objerror(o, USER, "illegal material"); |
173 |
+ |
|
174 |
+ |
if ((ns = newsource()) < 0) |
175 |
+ |
error(SYSTEM, "out of memory in distantsources"); |
176 |
+ |
|
177 |
+ |
setsource(&source[ns], o); |
178 |
+ |
|
179 |
+ |
if (m->otype == MAT_GLOW) { |
180 |
+ |
source[ns].sflags |= SPROX|SSKIP; |
181 |
+ |
source[ns].sl.prox = m->oargs.farg[3]; |
182 |
+ |
} else if (m->otype == MAT_SPOT) |
183 |
+ |
objerror(o, WARNING, "distant source is a spotlight"); |
184 |
+ |
} |
185 |
+ |
} |
186 |
+ |
|
187 |
+ |
|
188 |
+ |
void |
189 |
|
freesources(void) /* free all source structures */ |
190 |
|
{ |
191 |
|
if (nsources > 0) { |
294 |
|
|
295 |
|
static int |
296 |
|
transillum( /* check if material is transparent illum */ |
297 |
< |
OBJECT obj |
297 |
> |
OBJREC *m |
298 |
|
) |
299 |
|
{ |
300 |
< |
OBJREC *m = findmaterial(objptr(obj)); |
277 |
< |
|
300 |
> |
m = findmaterial(m); |
301 |
|
if (m == NULL) |
302 |
|
return(1); |
303 |
|
if (m->otype != MAT_ILLUM) |
330 |
|
*/ |
331 |
|
if (2.*PI*(1. - DOT(source[i].sloc,r->rdir)) > source[i].ss2) |
332 |
|
continue; |
333 |
< |
/* is it the only possibility? */ |
334 |
< |
if (first == last) { |
333 |
> |
/* is it what we aimed for? */ |
334 |
> |
if (i == r->rsrc) { |
335 |
|
r->ro = source[i].so; |
336 |
|
break; |
337 |
|
} |
343 |
|
glowsrc = i; |
344 |
|
continue; |
345 |
|
} |
346 |
< |
if (transillum(source[i].so->omod)) { |
346 |
> |
if (transillum(source[i].so)) { |
347 |
|
if (transrc < 0) |
348 |
|
transrc = i; |
349 |
|
continue; |
363 |
|
return(0); /* nothing usable */ |
364 |
|
} |
365 |
|
/* |
366 |
< |
* Make assignments. |
366 |
> |
* Assign object index |
367 |
|
*/ |
368 |
|
r->robj = objndx(r->ro); |
346 |
– |
for (i = 0; i < 3; i++) |
347 |
– |
r->ron[i] = -r->rdir[i]; |
348 |
– |
r->rod = 1.0; |
349 |
– |
r->pert[0] = r->pert[1] = r->pert[2] = 0.0; |
350 |
– |
r->uv[0] = r->uv[1] = 0.0; |
351 |
– |
r->rox = NULL; |
369 |
|
return(1); |
370 |
|
} |
371 |
|
|
427 |
|
cntord[sn].sndx = sn; |
428 |
|
scp = srccnt + sn; |
429 |
|
scp->sno = sr.rsrc; |
430 |
< |
/* compute coefficient */ |
414 |
< |
(*f)(scp->coef, p, sr.rdir, si.dom); |
415 |
< |
cntord[sn].brt = intens(scp->coef); |
416 |
< |
if (cntord[sn].brt <= 0.0) |
417 |
< |
continue; |
418 |
< |
#if SHADCACHE |
419 |
< |
/* check shadow cache */ |
430 |
> |
#if SHADCACHE /* check shadow cache */ |
431 |
|
if (si.np == 1 && srcblocked(&sr)) { |
432 |
|
cntord[sn].brt = 0.0; |
433 |
|
continue; |
434 |
|
} |
435 |
|
#endif |
436 |
+ |
/* compute coefficient */ |
437 |
+ |
(*f)(scp->coef, p, sr.rdir, si.dom); |
438 |
+ |
cntord[sn].brt = intens(scp->coef); |
439 |
+ |
if (cntord[sn].brt <= 0.0) |
440 |
+ |
continue; |
441 |
|
VCOPY(scp->dir, sr.rdir); |
442 |
|
copycolor(sr.rcoef, scp->coef); |
443 |
|
/* compute potential */ |
470 |
|
/* compute number to check */ |
471 |
|
nshadcheck = pow((double)ncnts, shadcert) + .5; |
472 |
|
/* modify threshold */ |
473 |
< |
if (ncnts > MINSHADCNT) |
458 |
< |
ourthresh = shadthresh / r->rweight; |
459 |
< |
else |
460 |
< |
ourthresh = 0; |
473 |
> |
ourthresh = shadthresh / r->rweight; |
474 |
|
/* test for shadows */ |
475 |
|
for (nhits = 0, hwt = 0.0, sn = 0; sn < ncnts; |
476 |
|
hwt += (double)source[scp->sno].nhits / |
477 |
|
(double)source[scp->sno].ntests, |
478 |
|
sn++) { |
479 |
|
/* check threshold */ |
480 |
< |
if ((sn+nshadcheck>=ncnts ? cntord[sn].brt : |
480 |
> |
if (sn >= MINSHADCNT && |
481 |
> |
(sn+nshadcheck>=ncnts ? cntord[sn].brt : |
482 |
|
cntord[sn].brt-cntord[sn+nshadcheck].brt) |
483 |
< |
< ourthresh*bright(r->rcol)) |
483 |
> |
< ourthresh*bright(r->rcol)) |
484 |
|
break; |
485 |
|
scp = srccnt + cntord[sn].sndx; |
486 |
|
/* test for hit */ |
560 |
|
COLOR cvext; |
561 |
|
int i, j; |
562 |
|
|
563 |
< |
if (r->rot >= FHUGE || r->gecc >= 1.-FTINY) |
563 |
> |
if (r->rot >= FHUGE*.99 || r->gecc >= 1.-FTINY) |
564 |
|
return; /* this can never work */ |
565 |
|
/* PMAP: do unconditional inscattering for volume photons */ |
566 |
|
if (!volumePhotonMapping && (r->slights == NULL || r->slights[0] == 0)) |
663 |
|
*/ |
664 |
|
|
665 |
|
static int |
666 |
< |
weaksrcmat(OBJECT obj) /* identify material */ |
666 |
> |
weaksrcmat(OBJREC *m) /* identify material */ |
667 |
|
{ |
668 |
< |
OBJREC *m = findmaterial(objptr(obj)); |
655 |
< |
|
668 |
> |
m = findmaterial(m); |
669 |
|
if (m == NULL) return(0); |
670 |
|
return((m->otype==MAT_ILLUM) | (m->otype==MAT_GLOW)); |
671 |
|
} |
672 |
|
|
673 |
|
#define illumblock(m, r) (!(source[r->rsrc].sflags&SVIRTUAL) && \ |
674 |
|
r->rod > 0.0 && \ |
675 |
< |
weaksrcmat(source[r->rsrc].so->omod)) |
675 |
> |
weaksrcmat(source[r->rsrc].so)) |
676 |
|
|
677 |
|
/* wrongsource * |
678 |
|
* |