| 25 |
|
|
| 26 |
|
int do_irrad = 0; /* compute irradiance? */ |
| 27 |
|
|
| 28 |
< |
int rand_samp = 0; /* pure Monte Carlo sampling? */ |
| 28 |
> |
int rand_samp = 1; /* pure Monte Carlo sampling? */ |
| 29 |
|
|
| 30 |
|
double dstrsrc = 0.0; /* square source distribution */ |
| 31 |
|
double shadthresh = .03; /* shadow threshold */ |
| 45 |
|
|
| 46 |
|
int backvis = 1; /* back face visibility */ |
| 47 |
|
|
| 48 |
< |
int maxdepth = 8; /* maximum recursion depth */ |
| 49 |
< |
double minweight = 5e-4; /* minimum ray weight */ |
| 48 |
> |
int maxdepth = -10; /* maximum recursion depth */ |
| 49 |
> |
double minweight = 2e-3; /* minimum ray weight */ |
| 50 |
|
|
| 51 |
|
char *ambfile = NULL; /* ambient file name */ |
| 52 |
|
COLOR ambval = BLKCOLOR; /* ambient value */ |
| 63 |
|
RNUMBER raysleft; /* number of rays left to trace */ |
| 64 |
|
long waitflush; /* how long until next flush */ |
| 65 |
|
|
| 66 |
< |
int lastray = 0; /* last ray number sent */ |
| 67 |
< |
int lastdone = 0; /* last ray output */ |
| 66 |
> |
RNUMBER lastray = 0; /* last ray number sent */ |
| 67 |
> |
RNUMBER lastdone = 0; /* last ray output */ |
| 68 |
|
|
| 69 |
– |
/* Close output stream and free record */ |
| 70 |
– |
static void |
| 71 |
– |
closestream(void *p) |
| 72 |
– |
{ |
| 73 |
– |
STREAMOUT *sop = (STREAMOUT *)p; |
| 74 |
– |
int status = 0; |
| 75 |
– |
if (sop->outpipe) |
| 76 |
– |
status = pclose(sop->ofp); |
| 77 |
– |
else if (sop->ofp != stdout) |
| 78 |
– |
status = fclose(sop->ofp); |
| 79 |
– |
if (status) |
| 80 |
– |
error(SYSTEM, "error closing output stream"); |
| 81 |
– |
free(p); |
| 82 |
– |
} |
| 83 |
– |
|
| 84 |
– |
LUTAB ofiletab = LU_SINIT(free,closestream); /* output file table */ |
| 85 |
– |
|
| 86 |
– |
#define OF_MODIFIER 01 |
| 87 |
– |
#define OF_BIN 02 |
| 88 |
– |
|
| 69 |
|
static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); } |
| 70 |
|
|
| 71 |
|
LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */ |
| 72 |
|
|
| 93 |
– |
static OBJECT traset[MAXTSET+1]={0}; /* trace include set */ |
| 94 |
– |
|
| 73 |
|
/************************** INITIALIZATION ROUTINES ***********************/ |
| 74 |
|
|
| 97 |
– |
void |
| 98 |
– |
tranotify( /* record new modifier */ |
| 99 |
– |
OBJECT obj |
| 100 |
– |
) |
| 101 |
– |
{ |
| 102 |
– |
static int hitlimit = 0; |
| 103 |
– |
OBJREC *o = objptr(obj); |
| 104 |
– |
int i; |
| 105 |
– |
|
| 106 |
– |
if (obj == OVOID) { /* starting over */ |
| 107 |
– |
traset[0] = 0; |
| 108 |
– |
hitlimit = 0; |
| 109 |
– |
return; |
| 110 |
– |
} |
| 111 |
– |
if (hitlimit || !ismodifier(o->otype)) |
| 112 |
– |
return; |
| 113 |
– |
for (i = nmods; i-- > 0; ) |
| 114 |
– |
if (!strcmp(o->oname, modname[i])) { |
| 115 |
– |
if (traset[0] >= MAXTSET) { |
| 116 |
– |
error(WARNING, "too many same-named modifiers"); |
| 117 |
– |
hitlimit++; |
| 118 |
– |
return; /* should this be fatal? */ |
| 119 |
– |
} |
| 120 |
– |
insertelem(traset, obj); |
| 121 |
– |
break; |
| 122 |
– |
} |
| 123 |
– |
} |
| 124 |
– |
|
| 125 |
– |
|
| 75 |
|
char * |
| 76 |
|
formstr( /* return format identifier */ |
| 77 |
|
int f |
| 181 |
|
if ((nproc > 1) & (accumulate <= 0)) |
| 182 |
|
put_zero_record(0); /* prime our queue to accumulate */ |
| 183 |
|
|
| 235 |
– |
if (recover) { /* recover previous output? */ |
| 236 |
– |
if (accumulate <= 0) { |
| 237 |
– |
reload_output(); |
| 238 |
– |
if (nproc > 1) |
| 239 |
– |
queue_modifiers(); |
| 240 |
– |
} else |
| 241 |
– |
recover_output(); |
| 242 |
– |
} |
| 184 |
|
if (yres > 0) { /* set up flushing & ray counts */ |
| 185 |
|
if (xres > 0) |
| 186 |
|
raysleft = (RNUMBER)xres*yres; |
| 195 |
|
for (i = 0; i < nsources; i++) |
| 196 |
|
source[i].sflags |= SFOLLOW; |
| 197 |
|
|
| 198 |
< |
if (nproc == 1 || in_rchild()) /* single process or child */ |
| 198 |
> |
if (nproc > 1 && in_rchild()) /* forked child? */ |
| 199 |
|
return; /* return to main processing loop */ |
| 200 |
|
|
| 201 |
+ |
if (recover) { /* recover previous output? */ |
| 202 |
+ |
if (accumulate <= 0) { |
| 203 |
+ |
reload_output(); |
| 204 |
+ |
if (nproc > 1) |
| 205 |
+ |
queue_modifiers(); |
| 206 |
+ |
} else |
| 207 |
+ |
recover_output(); |
| 208 |
+ |
} |
| 209 |
+ |
if (nproc == 1) /* single process? */ |
| 210 |
+ |
return; |
| 211 |
+ |
|
| 212 |
|
parental_loop(); /* else run controller */ |
| 213 |
|
quit(0); /* parent musn't return! */ |
| 214 |
|
} |
| 223 |
|
int bn; |
| 224 |
|
RREAL contr[3]; |
| 225 |
|
|
| 226 |
< |
if (r->ro == NULL || !inset(traset, r->ro->omod)) |
| 226 |
> |
if (r->ro == NULL || r->ro->omod == OVOID) |
| 227 |
|
return; |
| 228 |
|
|
| 229 |
|
mp = (MODCONT *)lu_find(&modconttab,objptr(r->ro->omod)->oname)->data; |
| 230 |
|
|
| 231 |
< |
if (mp == NULL) |
| 232 |
< |
error(CONSISTENCY, "unexpected modifier in trace_contrib()"); |
| 231 |
> |
if (mp == NULL) /* not in our list? */ |
| 232 |
> |
return; |
| 233 |
|
|
| 234 |
|
worldfunc(RCCONTEXT, r); /* get bin number */ |
| 235 |
|
bn = (int)(evalue(mp->binv) + .5); |
| 244 |
|
} |
| 245 |
|
|
| 246 |
|
|
| 247 |
+ |
/* Evaluate irradiance contributions */ |
| 248 |
|
static void |
| 249 |
< |
rayirrad( /* compute irradiance rather than radiance */ |
| 297 |
< |
RAY *r |
| 298 |
< |
) |
| 249 |
> |
eval_irrad(FVECT org, FVECT dir) |
| 250 |
|
{ |
| 251 |
< |
r->rot = 1e-5; /* pretend we hit surface */ |
| 252 |
< |
VSUM(r->rop, r->rorg, r->rdir, r->rot); |
| 253 |
< |
r->ron[0] = -r->rdir[0]; |
| 254 |
< |
r->ron[1] = -r->rdir[1]; |
| 255 |
< |
r->ron[2] = -r->rdir[2]; |
| 256 |
< |
r->rod = 1.0; |
| 257 |
< |
/* compute result */ |
| 258 |
< |
r->revf = raytrace; |
| 259 |
< |
(*ofun[Lamb.otype].funp)(&Lamb, r); |
| 260 |
< |
r->revf = rayirrad; |
| 251 |
> |
RAY thisray; |
| 252 |
> |
|
| 253 |
> |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
| 254 |
> |
thisray.rdir[0] = -dir[0]; |
| 255 |
> |
thisray.rdir[1] = -dir[1]; |
| 256 |
> |
thisray.rdir[2] = -dir[2]; |
| 257 |
> |
thisray.rmax = 0.0; |
| 258 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 259 |
> |
thisray.rot = 1e-5; /* pretend we hit surface */ |
| 260 |
> |
thisray.rod = 1.0; |
| 261 |
> |
VSUM(thisray.rop, org, dir, 1e-4); |
| 262 |
> |
samplendx++; /* compute result */ |
| 263 |
> |
(*ofun[Lamb.otype].funp)(&Lamb, &thisray); |
| 264 |
|
} |
| 265 |
|
|
| 266 |
|
|
| 267 |
< |
/* Evaluate ray contributions */ |
| 267 |
> |
/* Evaluate radiance contributions */ |
| 268 |
|
static void |
| 269 |
< |
eval_ray(FVECT org, FVECT dir, double dmax) |
| 269 |
> |
eval_rad(FVECT org, FVECT dir, double dmax) |
| 270 |
|
{ |
| 271 |
|
RAY thisray; |
| 272 |
|
/* set up ray */ |
| 273 |
+ |
VCOPY(thisray.rorg, org); |
| 274 |
+ |
VCOPY(thisray.rdir, dir); |
| 275 |
+ |
thisray.rmax = dmax; |
| 276 |
|
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 320 |
– |
if (imm_irrad) { |
| 321 |
– |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
| 322 |
– |
thisray.rdir[0] = -dir[0]; |
| 323 |
– |
thisray.rdir[1] = -dir[1]; |
| 324 |
– |
thisray.rdir[2] = -dir[2]; |
| 325 |
– |
thisray.rmax = 0.0; |
| 326 |
– |
thisray.revf = rayirrad; |
| 327 |
– |
} else { |
| 328 |
– |
VCOPY(thisray.rorg, org); |
| 329 |
– |
VCOPY(thisray.rdir, dir); |
| 330 |
– |
thisray.rmax = dmax; |
| 331 |
– |
} |
| 277 |
|
samplendx++; /* call ray evaluation */ |
| 278 |
|
rayvalue(&thisray); |
| 279 |
|
} |
| 315 |
|
#endif |
| 316 |
|
while (getvec(orig) == 0 && getvec(direc) == 0) { |
| 317 |
|
d = normalize(direc); |
| 318 |
< |
if ((d == 0.0) & (accumulate != 1)) { |
| 318 |
> |
if (nchild != -1 && (d == 0.0) & (accumulate != 1)) { |
| 319 |
|
if (!ignore_warning_given++) |
| 320 |
|
error(WARNING, |
| 321 |
|
"dummy ray(s) ignored during accumulation\n"); |
| 327 |
|
if (d == 0.0) { /* zero ==> flush */ |
| 328 |
|
if ((yres <= 0) | (xres <= 0)) |
| 329 |
|
waitflush = 1; /* flush right after */ |
| 330 |
< |
} else { /* else compute */ |
| 331 |
< |
eval_ray(orig, direc, lim_dist ? d : 0.0); |
| 330 |
> |
account = 1; |
| 331 |
> |
} else if (imm_irrad) { /* else compute */ |
| 332 |
> |
eval_irrad(orig, direc); |
| 333 |
> |
} else { |
| 334 |
> |
eval_rad(orig, direc, lim_dist ? d : 0.0); |
| 335 |
|
} |
| 336 |
|
done_contrib(); /* accumulate/output */ |
| 337 |
|
++lastdone; |
| 338 |
|
if (raysleft && !--raysleft) |
| 339 |
|
break; /* preemptive EOI */ |
| 340 |
|
} |
| 341 |
< |
if (accumulate <= 0 || account < accumulate) { |
| 341 |
> |
if (nchild != -1 && (accumulate <= 0) | (account < accumulate)) { |
| 342 |
|
if (account < accumulate) { |
| 343 |
|
error(WARNING, "partial accumulation in final record"); |
| 344 |
|
accumulate -= account; |
