| 19 |
|
|
| 20 |
|
#include "random.h" |
| 21 |
|
|
| 22 |
< |
#define MINSAMPLES 3 /* minimum number of pretest samples */ |
| 23 |
< |
#define STESTMAX 30 /* maximum seeks per sample */ |
| 22 |
> |
#define MINSAMPLES 16 /* minimum number of pretest samples */ |
| 23 |
> |
#define STESTMAX 32 /* maximum seeks per sample */ |
| 24 |
|
|
| 25 |
|
|
| 26 |
|
double getdisk(); |
| 44 |
|
if (!isvlight(objptr(o->omod)->otype)) |
| 45 |
|
continue; |
| 46 |
|
if (sfun[o->otype].of == NULL || |
| 47 |
< |
sfun[o->otype].of->getpleq == NULL) |
| 48 |
< |
objerror(o, USER, "illegal material"); |
| 47 |
> |
sfun[o->otype].of->getpleq == NULL) { |
| 48 |
> |
objerror(o,WARNING,"secondary sources not supported"); |
| 49 |
> |
continue; |
| 50 |
> |
} |
| 51 |
|
if (nvobjects == 0) |
| 52 |
|
vobject = (OBJECT *)malloc(sizeof(OBJECT)); |
| 53 |
|
else |
| 106 |
|
for (i = 0; i < vsmat->nproj; i++) |
| 107 |
|
if ((*vsmat->vproj)(proj, o, &source[sn], i)) |
| 108 |
|
if ((ns = makevsrc(o, sn, proj)) >= 0) { |
| 109 |
+ |
source[ns].sa.sv.pn = i; |
| 110 |
|
#ifdef DEBUG |
| 111 |
|
virtverb(ns, stderr); |
| 112 |
|
#endif |
| 137 |
|
if (source[sn].sflags & SPROX) |
| 138 |
|
return(-1); /* should never get here! */ |
| 139 |
|
multv3(nsloc, source[sn].sloc, pm); |
| 140 |
+ |
normalize(nsloc); |
| 141 |
|
VCOPY(ourspot.aim, ocent); |
| 142 |
|
ourspot.siz = PI*maxrad2; |
| 143 |
|
ourspot.flen = 0.; |
| 144 |
|
if (source[sn].sflags & SSPOT) { |
| 141 |
– |
copystruct(&theirspot, source[sn].sl.s); |
| 145 |
|
multp3(theirspot.aim, source[sn].sl.s->aim, pm); |
| 146 |
+ |
d = sqrt(dist2(ourspot.aim, theirspot.aim)); |
| 147 |
+ |
d = sqrt(source[sn].sl.s->siz/PI) + d*source[sn].ss; |
| 148 |
+ |
theirspot.siz = PI*d*d; |
| 149 |
+ |
ourspot.flen = theirspot.flen = source[sn].sl.s->flen; |
| 150 |
|
d = ourspot.siz; |
| 151 |
|
if (!commonbeam(&ourspot, &theirspot, nsloc)) |
| 152 |
|
return(-1); /* no overlap */ |
| 169 |
|
if (source[sn].sflags & SPROX && d > source[sn].sl.prox) |
| 170 |
|
return(-1); /* too far away */ |
| 171 |
|
ourspot.flen = 0.; |
| 172 |
< |
if (d*d > maxrad2) |
| 173 |
< |
ourspot.siz = 2.*PI*(1. - sqrt(1.-maxrad2/(d*d))); |
| 172 |
> |
d = (sqrt(maxrad2) + source[sn].ss) / d; |
| 173 |
> |
if (d < 1.-FTINY) |
| 174 |
> |
ourspot.siz = 2.*PI*(1. - sqrt(1.-d*d)); |
| 175 |
|
else |
| 176 |
|
nsflags &= ~SSPOT; |
| 177 |
|
if (source[sn].sflags & SSPOT) { |
| 178 |
|
copystruct(&theirspot, source[sn].sl.s); |
| 179 |
|
multv3(theirspot.aim, source[sn].sl.s->aim, pm); |
| 180 |
+ |
normalize(theirspot.aim); |
| 181 |
|
if (nsflags & SSPOT) { |
| 182 |
|
ourspot.flen = theirspot.flen; |
| 183 |
|
d = ourspot.siz; |
| 200 |
|
} |
| 201 |
|
if (source[sn].sflags & SFLAT) { /* behind source? */ |
| 202 |
|
multv3(nsnorm, source[sn].snorm, pm); |
| 203 |
< |
if (!checkspot(&ourspot, nsnorm)) |
| 203 |
> |
normalize(nsnorm); |
| 204 |
> |
if (nsflags & SSPOT && !checkspot(&ourspot, nsnorm)) |
| 205 |
|
return(-1); |
| 206 |
|
} |
| 207 |
|
} |
| 224 |
|
} |
| 225 |
|
if (nsflags & SPROX) |
| 226 |
|
source[i].sl.prox = source[sn].sl.prox; |
| 227 |
< |
source[i].sa.svnext = sn; |
| 227 |
> |
source[i].sa.sv.sn = sn; |
| 228 |
|
source[i].so = op; |
| 229 |
|
return(i); |
| 230 |
|
memerr: |
| 277 |
|
FVECT offsdir; |
| 278 |
|
double or, d; |
| 279 |
|
int infront; |
| 280 |
< |
int ssn; |
| 280 |
> |
int stestlim, ssn; |
| 281 |
|
int nhit, nok; |
| 282 |
|
register int i, n; |
| 283 |
|
/* return if pretesting disabled */ |
| 287 |
|
getplaneq(onorm, o); |
| 288 |
|
/* set number of rays to sample */ |
| 289 |
|
if (source[sn].sflags & SDISTANT) { |
| 290 |
< |
n = (2./3.*PI*PI)*or2/(thescene.cusize*thescene.cusize)* |
| 291 |
< |
vspretest + .5; |
| 290 |
> |
/* 32. == heuristic constant */ |
| 291 |
> |
n = 32.*or2/(thescene.cusize*thescene.cusize)*vspretest + .5; |
| 292 |
|
infront = DOT(onorm, source[sn].sloc) > 0.; |
| 293 |
|
} else { |
| 294 |
|
for (i = 0; i < 3; i++) |
| 295 |
|
offsdir[i] = source[sn].sloc[i] - oc[i]; |
| 296 |
< |
n = or2/DOT(offsdir,offsdir)*vspretest + .5; |
| 296 |
> |
d = DOT(offsdir,offsdir); |
| 297 |
> |
if (d <= FTINY) |
| 298 |
> |
n = 2.*PI * vspretest + .5; |
| 299 |
> |
else |
| 300 |
> |
n = 2.*PI * (1.-sqrt(1./(1.+or2/d)))*vspretest + .5; |
| 301 |
|
infront = DOT(onorm, offsdir) > 0.; |
| 302 |
|
} |
| 303 |
|
if (n < MINSAMPLES) n = MINSAMPLES; |
| 307 |
|
#endif |
| 308 |
|
/* sample */ |
| 309 |
|
or = sqrt(or2); |
| 310 |
< |
ssn = STESTMAX*n; |
| 310 |
> |
stestlim = n*STESTMAX; |
| 311 |
> |
ssn = 0; |
| 312 |
|
nhit = nok = 0; |
| 313 |
|
while (n-- > 0) { |
| 314 |
|
/* get sample point */ |
| 315 |
|
do { |
| 316 |
< |
if (--ssn < 0) { |
| 316 |
> |
if (ssn >= stestlim) { |
| 317 |
|
#ifdef DEBUG |
| 318 |
|
fprintf(stderr, "\ttoo hard to hit\n"); |
| 319 |
|
#endif |
| 320 |
|
return(f); /* too small a target! */ |
| 321 |
|
} |
| 322 |
+ |
multisamp(offsdir, 3, urand(sn*931+5827+ssn)); |
| 323 |
|
for (i = 0; i < 3; i++) |
| 324 |
< |
offsdir[i] = or*(1. - |
| 325 |
< |
2.*urand(931*i+5827+ssn)); |
| 324 |
> |
offsdir[i] = or*(1. - 2.*offsdir[i]); |
| 325 |
> |
ssn++; |
| 326 |
|
for (i = 0; i < 3; i++) |
| 327 |
|
sr.rorg[i] = oc[i] + offsdir[i]; |
| 328 |
|
d = DOT(offsdir,onorm); |
| 348 |
|
continue; |
| 349 |
|
nok++; |
| 350 |
|
/* check against obstructions */ |
| 351 |
< |
srcray(&sr, NULL, sn); |
| 351 |
> |
rayclear(&sr); |
| 352 |
> |
sr.revf = raytrace; |
| 353 |
|
rayvalue(&sr); |
| 354 |
|
if (bright(sr.rcol) > FTINY) |
| 355 |
|
nhit++; |
| 387 |
|
fprintf(fp, "\tat (%f,%f,%f)\n", |
| 388 |
|
source[sn].sloc[0], source[sn].sloc[1], source[sn].sloc[2]); |
| 389 |
|
fprintf(fp, "\tlinked to source %d (%s)\n", |
| 390 |
< |
source[sn].sa.svnext, source[source[sn].sa.svnext].so->oname); |
| 390 |
> |
source[sn].sa.sv.sn, source[source[sn].sa.sv.sn].so->oname); |
| 391 |
|
if (source[sn].sflags & SFOLLOW) |
| 392 |
|
fprintf(fp, "\talways followed\n"); |
| 393 |
|
else |
