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* Initialization and calculation routines |
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*/ |
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#include "copyright.h" |
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|
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#include "rcontrib.h" |
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#include "source.h" |
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#include "otypes.h" |
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#include "platform.h" |
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> |
#include "source.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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|
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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 dstrsrc = 0.9; /* square source distribution */ |
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double shadthresh = .03; /* shadow threshold */ |
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double shadcert = .75; /* shadow certainty */ |
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int directrelay = 3; /* number of source relays */ |
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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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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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|
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/* Add modifier to our list to track */ |
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MODCONT * |
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addmodifier(char *modn, char *outf, char *binv, int bincnt) |
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addmodifier(char *modn, char *outf, char *prms, char *binv, int bincnt) |
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{ |
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LUENT *lep = lu_find(&modconttab,modn); |
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MODCONT *mp; |
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error(SYSTEM, "out of memory in addmodifier"); |
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mp->outspec = outf; /* XXX assumes static string */ |
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mp->modname = modn; /* XXX assumes static string */ |
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mp->params = prms; |
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mp->binv = ebinv; |
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mp->nbins = bincnt; |
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memset(mp->cbin, 0, sizeof(DCOLOR)*bincnt); |
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} |
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|
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|
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/* add modifiers from a file list */ |
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/* Add modifiers from a file list */ |
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void |
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addmodfile(char *fname, char *outf, char *binv, int bincnt) |
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addmodfile(char *fname, char *outf, char *prms, char *binv, int bincnt) |
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{ |
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char *mname[MAXMODLIST]; |
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int i; |
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error(SYSTEM, errmsg); |
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} |
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for (i = 0; mname[i]; i++) /* add each one */ |
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addmodifier(mname[i], outf, binv, bincnt); |
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addmodifier(mname[i], outf, prms, binv, bincnt); |
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} |
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) |
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{ |
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if (nchild > 0) /* close children if any */ |
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end_children(); |
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end_children(code != 0); |
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exit(code); |
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} |
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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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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) |
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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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for (i = 0; i < nsources; i++) /* tracing to sources as well */ |
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source[i].sflags |= SFOLLOW; |
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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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if ((account = accumulate) > 1) |
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raysleft *= accumulate; |
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waitflush = (yres > 0) & (xres > 1) ? 0 : xres; |
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/* tracing to sources as well */ |
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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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parental_loop(); /* else run controller */ |
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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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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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/* else run appropriate controller */ |
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> |
if (accumulate <= 0) |
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> |
feeder_loop(); |
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else |
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parental_loop(); |
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quit(0); /* parent musn't return! */ |
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} |
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trace_contrib(RAY *r) |
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{ |
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MODCONT *mp; |
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double bval; |
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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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+ |
/* shadow ray not on source? */ |
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+ |
if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
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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); |
| 239 |
< |
if ((bn < 0) | (bn >= mp->nbins)) { |
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< |
error(WARNING, "bad bin number (ignored)"); |
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> |
worldfunc(RCCONTEXT, r); /* else set context */ |
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> |
set_eparams((char *)mp->params); |
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> |
if ((bval = evalue(mp->binv)) <= -.5) /* and get bin number */ |
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> |
return; /* silently ignore negatives */ |
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> |
if ((bn = (int)(bval + .5)) >= mp->nbins) { |
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> |
sprintf(errmsg, "bad bin number (%d ignored)", bn); |
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> |
error(WARNING, errmsg); |
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return; |
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} |
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< |
raycontrib(contr, r, PRIMARY); |
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> |
raycontrib(contr, r, PRIMARY); /* compute coefficient */ |
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if (contrib) |
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< |
multcolor(contr, r->rcol); |
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> |
multcolor(contr, r->rcol); /* -> contribution */ |
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addcolor(mp->cbin[bn], contr); |
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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 |
| 255 |
< |
rayirrad( /* compute irradiance rather than radiance */ |
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< |
RAY *r |
| 278 |
< |
) |
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> |
eval_irrad(FVECT org, FVECT dir) |
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|
{ |
| 257 |
< |
r->rot = 1e-5; /* pretend we hit surface */ |
| 258 |
< |
VSUM(r->rop, r->rorg, r->rdir, r->rot); |
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< |
r->ron[0] = -r->rdir[0]; |
| 260 |
< |
r->ron[1] = -r->rdir[1]; |
| 261 |
< |
r->ron[2] = -r->rdir[2]; |
| 262 |
< |
r->rod = 1.0; |
| 263 |
< |
/* compute result */ |
| 264 |
< |
r->revf = raytrace; |
| 265 |
< |
(*ofun[Lamb.otype].funp)(&Lamb, r); |
| 266 |
< |
r->revf = rayirrad; |
| 257 |
> |
RAY thisray; |
| 258 |
> |
|
| 259 |
> |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
| 260 |
> |
thisray.rdir[0] = -dir[0]; |
| 261 |
> |
thisray.rdir[1] = -dir[1]; |
| 262 |
> |
thisray.rdir[2] = -dir[2]; |
| 263 |
> |
thisray.rmax = 0.0; |
| 264 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 265 |
> |
/* pretend we hit surface */ |
| 266 |
> |
thisray.rt = thisray.rot = 1e-5; |
| 267 |
> |
thisray.rod = 1.0; |
| 268 |
> |
VCOPY(thisray.ron, dir); |
| 269 |
> |
VSUM(thisray.rop, org, dir, 1e-4); |
| 270 |
> |
samplendx++; /* compute result */ |
| 271 |
> |
(*ofun[Lamb.otype].funp)(&Lamb, &thisray); |
| 272 |
|
} |
| 273 |
|
|
| 274 |
|
|
| 275 |
< |
/* Evaluate ray contributions */ |
| 275 |
> |
/* Evaluate radiance contributions */ |
| 276 |
|
static void |
| 277 |
< |
eval_ray(FVECT org, FVECT dir, double dmax) |
| 277 |
> |
eval_rad(FVECT org, FVECT dir, double dmax) |
| 278 |
|
{ |
| 279 |
|
RAY thisray; |
| 280 |
|
/* set up ray */ |
| 281 |
+ |
VCOPY(thisray.rorg, org); |
| 282 |
+ |
VCOPY(thisray.rdir, dir); |
| 283 |
+ |
thisray.rmax = dmax; |
| 284 |
|
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 300 |
– |
if (imm_irrad) { |
| 301 |
– |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
| 302 |
– |
thisray.rdir[0] = -dir[0]; |
| 303 |
– |
thisray.rdir[1] = -dir[1]; |
| 304 |
– |
thisray.rdir[2] = -dir[2]; |
| 305 |
– |
thisray.rmax = 0.0; |
| 306 |
– |
thisray.revf = rayirrad; |
| 307 |
– |
} else { |
| 308 |
– |
VCOPY(thisray.rorg, org); |
| 309 |
– |
VCOPY(thisray.rdir, dir); |
| 310 |
– |
thisray.rmax = dmax; |
| 311 |
– |
} |
| 285 |
|
samplendx++; /* call ray evaluation */ |
| 286 |
|
rayvalue(&thisray); |
| 287 |
|
} |
| 323 |
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#endif |
| 324 |
|
while (getvec(orig) == 0 && getvec(direc) == 0) { |
| 325 |
|
d = normalize(direc); |
| 326 |
< |
if ((d == 0.0) & (accumulate != 1)) { |
| 326 |
> |
if (nchild != -1 && (d == 0.0) & (accumulate == 0)) { |
| 327 |
|
if (!ignore_warning_given++) |
| 328 |
|
error(WARNING, |
| 329 |
|
"dummy ray(s) ignored during accumulation\n"); |
| 333 |
|
lastray = lastdone = 0; |
| 334 |
|
++lastray; |
| 335 |
|
if (d == 0.0) { /* zero ==> flush */ |
| 336 |
< |
if ((yres <= 0) | (xres <= 0)) |
| 337 |
< |
waitflush = 1; /* flush right after */ |
| 338 |
< |
} else { /* else compute */ |
| 339 |
< |
eval_ray(orig, direc, lim_dist ? d : 0.0); |
| 336 |
> |
if ((yres <= 0) | (xres <= 1)) |
| 337 |
> |
waitflush = 1; /* flush after */ |
| 338 |
> |
if (nchild == -1) |
| 339 |
> |
account = 1; |
| 340 |
> |
} else if (imm_irrad) { /* else compute */ |
| 341 |
> |
eval_irrad(orig, direc); |
| 342 |
> |
} else { |
| 343 |
> |
eval_rad(orig, direc, lim_dist ? d : 0.0); |
| 344 |
|
} |
| 345 |
|
done_contrib(); /* accumulate/output */ |
| 346 |
|
++lastdone; |
| 347 |
|
if (raysleft && !--raysleft) |
| 348 |
|
break; /* preemptive EOI */ |
| 349 |
|
} |
| 350 |
< |
if (accumulate <= 0 || account < accumulate) { |
| 350 |
> |
if (nchild != -1 && (accumulate <= 0) | (account < accumulate)) { |
| 351 |
|
if (account < accumulate) { |
| 352 |
|
error(WARNING, "partial accumulation in final record"); |
| 353 |
|
accumulate -= account; |
| 355 |
|
account = 1; /* output accumulated totals */ |
| 356 |
|
done_contrib(); |
| 357 |
|
} |
| 358 |
+ |
lu_done(&ofiletab); /* close output files */ |
| 359 |
|
if (raysleft) |
| 360 |
|
error(USER, "unexpected EOF on input"); |
| 383 |
– |
lu_done(&ofiletab); /* close output files */ |
| 361 |
|
} |
