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#include "otypes.h" |
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#include "platform.h" |
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|
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char *shm_boundary = NULL; /* boundary of shared memory */ |
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|
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CUBE thescene; /* our scene */ |
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OBJECT nsceneobjs; /* number of objects in our scene */ |
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|
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|
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int do_irrad = 0; /* compute irradiance? */ |
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|
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int rand_samp = 0; /* pure Monte Carlo sampling? */ |
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int rand_samp = 1; /* pure Monte Carlo sampling? */ |
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|
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .03; /* shadow threshold */ |
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|
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int backvis = 1; /* back face visibility */ |
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|
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int maxdepth = 8; /* maximum recursion depth */ |
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double minweight = 5e-4; /* minimum ray weight */ |
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int maxdepth = -10; /* maximum recursion depth */ |
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double minweight = 2e-3; /* minimum ray weight */ |
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|
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char *ambfile = NULL; /* ambient file name */ |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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RNUMBER raysleft; /* number of rays left to trace */ |
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long waitflush; /* how long until next flush */ |
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|
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int lastray = 0; /* last ray number sent */ |
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int lastdone = 0; /* last ray output */ |
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RNUMBER lastray = 0; /* last ray number sent */ |
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RNUMBER lastdone = 0; /* last ray output */ |
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|
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/* Close output stream and free record */ |
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static void |
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closestream(void *p) |
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{ |
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STREAMOUT *sop = (STREAMOUT *)p; |
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int status = 0; |
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if (sop->outpipe) |
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status = pclose(sop->ofp); |
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else if (sop->ofp != stdout) |
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status = fclose(sop->ofp); |
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if (status) |
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error(SYSTEM, "error closing output stream"); |
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free(p); |
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} |
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|
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LUTAB ofiletab = LU_SINIT(free,closestream); /* output file table */ |
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|
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#define OF_MODIFIER 01 |
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#define OF_BIN 02 |
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|
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static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); } |
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|
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LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */ |
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|
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static OBJECT traset[MAXTSET+1]={0}; /* trace include set */ |
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|
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/************************** INITIALIZATION ROUTINES ***********************/ |
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|
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void |
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tranotify( /* record new modifier */ |
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OBJECT obj |
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) |
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{ |
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static int hitlimit = 0; |
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OBJREC *o = objptr(obj); |
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int i; |
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|
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if (obj == OVOID) { /* starting over */ |
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traset[0] = 0; |
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hitlimit = 0; |
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return; |
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} |
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if (hitlimit || !ismodifier(o->otype)) |
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return; |
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for (i = nmods; i-- > 0; ) |
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if (!strcmp(o->oname, modname[i])) { |
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if (traset[0] >= MAXTSET) { |
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error(WARNING, "too many same-named modifiers"); |
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hitlimit++; |
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return; /* should this be fatal? */ |
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} |
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insertelem(traset, obj); |
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break; |
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} |
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} |
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|
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|
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char * |
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formstr( /* return format identifier */ |
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int f |
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if (nproc > MAXPROCESS) |
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sprintf(errmsg, "too many processes requested -- reducing to %d", |
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nproc = MAXPROCESS); |
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|
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if (nproc > 1) { |
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preload_objs(); /* preload auxiliary data */ |
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/* set shared memory boundary */ |
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shm_boundary = strcpy((char *)malloc(16), "SHM_BOUNDARY"); |
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} |
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if ((nproc > 1) & (accumulate <= 0)) |
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zero_record(0); /* prime our queue to accumulate */ |
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put_zero_record(0); /* prime our queue to accumulate */ |
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|
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if (recover) { /* recover previous output? */ |
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if (accumulate <= 0) { |
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reload_output(); |
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if ((nproc > 1) & (accumulate <= 0)) |
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queue_modifiers(); |
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} else |
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recover_output(); |
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} |
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if (yres > 0) { /* set up flushing & ray counts */ |
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if (xres > 0) |
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raysleft = (RNUMBER)xres*yres; |
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for (i = 0; i < nsources; i++) |
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source[i].sflags |= SFOLLOW; |
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|
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if (nproc == 1 || in_rchild()) /* single process or child */ |
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if (nproc > 1 && in_rchild()) /* forked child? */ |
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return; /* return to main processing loop */ |
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|
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if (recover) { /* recover previous output? */ |
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if (accumulate <= 0) { |
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reload_output(); |
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if (nproc > 1) |
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queue_modifiers(); |
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} else |
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recover_output(); |
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} |
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if (nproc == 1) /* single process? */ |
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return; |
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|
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parental_loop(); /* else run controller */ |
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quit(0); /* parent musn't return! */ |
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} |
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int bn; |
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RREAL contr[3]; |
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|
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if (r->ro == NULL || !inset(traset, r->ro->omod)) |
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if (r->ro == NULL || r->ro->omod == OVOID) |
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return; |
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|
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mp = (MODCONT *)lu_find(&modconttab,objptr(r->ro->omod)->oname)->data; |
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|
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if (mp == NULL) |
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error(CONSISTENCY, "unexpected modifier in trace_contrib()"); |
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if (mp == NULL) /* not in our list? */ |
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return; |
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|
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worldfunc(RCCONTEXT, r); /* get bin number */ |
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bn = (int)(evalue(mp->binv) + .5); |
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} |
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|
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|
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/* Evaluate irradiance contributions */ |
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static void |
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rayirrad( /* compute irradiance rather than radiance */ |
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RAY *r |
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) |
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eval_irrad(FVECT org, FVECT dir) |
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{ |
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r->rot = 1e-5; /* pretend we hit surface */ |
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VSUM(r->rop, r->rorg, r->rdir, r->rot); |
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r->ron[0] = -r->rdir[0]; |
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r->ron[1] = -r->rdir[1]; |
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r->ron[2] = -r->rdir[2]; |
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r->rod = 1.0; |
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/* compute result */ |
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r->revf = raytrace; |
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(*ofun[Lamb.otype].funp)(&Lamb, r); |
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r->revf = rayirrad; |
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RAY thisray; |
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> |
|
253 |
> |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
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thisray.rdir[0] = -dir[0]; |
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> |
thisray.rdir[1] = -dir[1]; |
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> |
thisray.rdir[2] = -dir[2]; |
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thisray.rmax = 0.0; |
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rayorigin(&thisray, PRIMARY, NULL, NULL); |
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thisray.rot = 1e-5; /* pretend we hit surface */ |
260 |
> |
thisray.rod = 1.0; |
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> |
VSUM(thisray.rop, org, dir, 1e-4); |
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samplendx++; /* compute result */ |
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> |
(*ofun[Lamb.otype].funp)(&Lamb, &thisray); |
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} |
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|
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|
|
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/* Evaluate ray contributions */ |
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> |
/* Evaluate radiance contributions */ |
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static void |
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< |
eval_ray(FVECT org, FVECT dir, double dmax) |
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> |
eval_rad(FVECT org, FVECT dir, double dmax) |
270 |
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{ |
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RAY thisray; |
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/* set up ray */ |
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+ |
VCOPY(thisray.rorg, org); |
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VCOPY(thisray.rdir, dir); |
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thisray.rmax = dmax; |
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rayorigin(&thisray, PRIMARY, NULL, NULL); |
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if (imm_irrad) { |
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VSUM(thisray.rorg, org, dir, 1.1e-4); |
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thisray.rdir[0] = -dir[0]; |
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thisray.rdir[1] = -dir[1]; |
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thisray.rdir[2] = -dir[2]; |
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thisray.rmax = 0.0; |
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thisray.revf = rayirrad; |
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} else { |
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VCOPY(thisray.rorg, org); |
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VCOPY(thisray.rdir, dir); |
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thisray.rmax = dmax; |
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} |
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samplendx++; /* call ray evaluation */ |
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rayvalue(&thisray); |
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} |
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static int ignore_warning_given = 0; |
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FVECT orig, direc; |
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double d; |
310 |
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/* initialize & fork */ |
310 |
> |
/* initialize (& fork more of us) */ |
311 |
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rcinit(); |
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/* load rays from stdin & process */ |
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#ifdef getc_unlocked |
314 |
< |
flockfile(stdin); /* avoid lock/unlock overhead */ |
314 |
> |
flockfile(stdin); /* avoid mutex overhead */ |
315 |
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#endif |
316 |
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while (getvec(orig) == 0 && getvec(direc) == 0) { |
317 |
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d = normalize(direc); |
318 |
< |
if ((d == 0.0) & (accumulate != 1)) { |
318 |
> |
if (nchild != -1 && (d == 0.0) & (accumulate != 1)) { |
319 |
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if (!ignore_warning_given++) |
320 |
|
error(WARNING, |
321 |
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"dummy ray(s) ignored during accumulation\n"); |
327 |
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if (d == 0.0) { /* zero ==> flush */ |
328 |
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if ((yres <= 0) | (xres <= 0)) |
329 |
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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 |
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} |
336 |
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done_contrib(); /* accumulate/output */ |
337 |
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++lastdone; |
338 |
|
if (raysleft && !--raysleft) |
339 |
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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; |