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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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char *shm_boundary = NULL; /* boundary of shared memory */ |
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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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double dstrsrc = 0.9; /* square source distribution */ |
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double shadthresh = 0.; /* 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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int vspretest = 512; /* virtual source pretest density */ |
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double seccg = 0.; /* global scattering eccentricity */ |
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double ssampdist = 0.; /* scatter sampling distance */ |
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double specthresh = .15; /* specular sampling threshold */ |
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> |
double specthresh = .02; /* specular sampling threshold */ |
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double specjitter = 1.; /* specular sampling jitter */ |
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|
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int backvis = 1; /* back face visibility */ |
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char *ambfile = NULL; /* ambient file name */ |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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int ambvwt = 0; /* initial weight for ambient value */ |
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double ambacc = 0; /* ambient accuracy */ |
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double ambacc = 0.; /* ambient accuracy */ |
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int ambres = 256; /* ambient resolution */ |
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int ambdiv = 350; /* ambient divisions */ |
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int ambssamp = 0; /* ambient super-samples */ |
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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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sprintf(errmsg, "duplicate modifier '%s'", modn); |
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error(USER, errmsg); |
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} |
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if (nmods >= MAXMODLIST) |
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error(INTERNAL, "too many modifiers"); |
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> |
if (nmods >= MAXMODLIST) { |
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> |
sprintf(errmsg, "too many modifiers (%d limit)", MAXMODLIST); |
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> |
error(INTERNAL, errmsg); |
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> |
} |
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> |
if (!strcmp(modn, VOIDID)) { |
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> |
sprintf(errmsg, "cannot track '%s' modifier", VOIDID); |
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> |
error(USER, errmsg); |
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> |
} |
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modname[nmods++] = modn; /* XXX assumes static string */ |
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lep->key = modn; /* XXX assumes static string */ |
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if (binv == NULL) |
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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; /* XXX assumes static string */ |
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mp->binv = ebinv; |
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mp->bin0 = 0; |
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mp->nbins = bincnt; |
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memset(mp->cbin, 0, sizeof(DCOLOR)*bincnt); |
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/* allocate output streams */ |
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for (i = bincnt; i-- > 0; ) |
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getostream(mp->outspec, mp->modname, i, 1); |
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/* figure out starting bin */ |
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> |
while (!getostream(mp->outspec, mp->modname, mp->bin0, 1)) |
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mp->bin0++; |
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> |
/* allocate other output streams */ |
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> |
for (i = 0; ++i < mp->nbins; ) |
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> |
getostream(mp->outspec, mp->modname, mp->bin0+i, 1); |
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lep->data = (char *)mp; |
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return(mp); |
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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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/* find the file & store strings */ |
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if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) { |
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i = wordfile(mname, MAXMODLIST, getpath(fname, getrlibpath(), R_OK)); |
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if (i < 0) { |
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sprintf(errmsg, "cannot find modifier file '%s'", fname); |
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error(SYSTEM, errmsg); |
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} |
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if (i >= MAXMODLIST-1) { |
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sprintf(errmsg, "too many modifiers (%d limit) in file '%s'", |
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MAXMODLIST-1, fname); |
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error(INTERNAL, 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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/* Initialize our process(es) */ |
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static void |
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rcinit() |
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rcinit(void) |
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{ |
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int i; |
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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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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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if (nproc > 1 && in_rchild()) /* forked child? */ |
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return; /* return to main processing loop */ |
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if (recover) { /* recover previous output? */ |
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if (accumulate <= 0) { |
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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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> |
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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< |
parental_loop(); /* else run controller */ |
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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 || 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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mp = (MODCONT *)lu_find(&modconttab,objptr(r->ro->omod)->oname)->data; |
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if (mp == NULL) /* not in our list? */ |
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return; |
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< |
worldfunc(RCCONTEXT, r); /* get bin number */ |
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< |
bn = (int)(evalue(mp->binv) + .5); |
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< |
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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| 268 |
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|
| 269 |
+ |
/* Evaluate irradiance contributions */ |
| 270 |
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static void |
| 271 |
< |
rayirrad( /* compute irradiance rather than radiance */ |
| 249 |
< |
RAY *r |
| 250 |
< |
) |
| 271 |
> |
eval_irrad(FVECT org, FVECT dir) |
| 272 |
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{ |
| 273 |
< |
r->rot = 1e-5; /* pretend we hit surface */ |
| 274 |
< |
VSUM(r->rop, r->rorg, r->rdir, r->rot); |
| 275 |
< |
r->ron[0] = -r->rdir[0]; |
| 276 |
< |
r->ron[1] = -r->rdir[1]; |
| 277 |
< |
r->ron[2] = -r->rdir[2]; |
| 278 |
< |
r->rod = 1.0; |
| 279 |
< |
/* compute result */ |
| 280 |
< |
r->revf = raytrace; |
| 281 |
< |
(*ofun[Lamb.otype].funp)(&Lamb, r); |
| 282 |
< |
r->revf = rayirrad; |
| 273 |
> |
RAY thisray; |
| 274 |
> |
|
| 275 |
> |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
| 276 |
> |
thisray.rdir[0] = -dir[0]; |
| 277 |
> |
thisray.rdir[1] = -dir[1]; |
| 278 |
> |
thisray.rdir[2] = -dir[2]; |
| 279 |
> |
thisray.rmax = 0.0; |
| 280 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 281 |
> |
/* pretend we hit surface */ |
| 282 |
> |
thisray.rt = thisray.rot = 1e-5; |
| 283 |
> |
thisray.rod = 1.0; |
| 284 |
> |
VCOPY(thisray.ron, dir); |
| 285 |
> |
VSUM(thisray.rop, org, dir, 1e-4); |
| 286 |
> |
samplendx++; /* compute result */ |
| 287 |
> |
(*ofun[Lamb.otype].funp)(&Lamb, &thisray); |
| 288 |
|
} |
| 289 |
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|
| 290 |
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|
| 291 |
< |
/* Evaluate ray contributions */ |
| 291 |
> |
/* Evaluate radiance contributions */ |
| 292 |
|
static void |
| 293 |
< |
eval_ray(FVECT org, FVECT dir, double dmax) |
| 293 |
> |
eval_rad(FVECT org, FVECT dir, double dmax) |
| 294 |
|
{ |
| 295 |
|
RAY thisray; |
| 296 |
|
/* set up ray */ |
| 297 |
+ |
VCOPY(thisray.rorg, org); |
| 298 |
+ |
VCOPY(thisray.rdir, dir); |
| 299 |
+ |
thisray.rmax = dmax; |
| 300 |
|
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 272 |
– |
if (imm_irrad) { |
| 273 |
– |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
| 274 |
– |
thisray.rdir[0] = -dir[0]; |
| 275 |
– |
thisray.rdir[1] = -dir[1]; |
| 276 |
– |
thisray.rdir[2] = -dir[2]; |
| 277 |
– |
thisray.rmax = 0.0; |
| 278 |
– |
thisray.revf = rayirrad; |
| 279 |
– |
} else { |
| 280 |
– |
VCOPY(thisray.rorg, org); |
| 281 |
– |
VCOPY(thisray.rdir, dir); |
| 282 |
– |
thisray.rmax = dmax; |
| 283 |
– |
} |
| 301 |
|
samplendx++; /* call ray evaluation */ |
| 302 |
|
rayvalue(&thisray); |
| 303 |
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} |
| 305 |
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|
| 306 |
|
/* Accumulate and/or output ray contributions (child or only process) */ |
| 307 |
|
static void |
| 308 |
< |
done_contrib() |
| 308 |
> |
done_contrib(void) |
| 309 |
|
{ |
| 310 |
|
MODCONT *mp; |
| 311 |
|
int i; |
| 326 |
|
|
| 327 |
|
/* Principal calculation loop (called by main) */ |
| 328 |
|
void |
| 329 |
< |
rcontrib() |
| 329 |
> |
rcontrib(void) |
| 330 |
|
{ |
| 331 |
|
static int ignore_warning_given = 0; |
| 332 |
|
FVECT orig, direc; |
| 339 |
|
#endif |
| 340 |
|
while (getvec(orig) == 0 && getvec(direc) == 0) { |
| 341 |
|
d = normalize(direc); |
| 342 |
< |
if (nchild != -1 && (d == 0.0) & (accumulate != 1)) { |
| 342 |
> |
if (nchild != -1 && (d == 0.0) & (accumulate == 0)) { |
| 343 |
|
if (!ignore_warning_given++) |
| 344 |
|
error(WARNING, |
| 345 |
|
"dummy ray(s) ignored during accumulation\n"); |
| 349 |
|
lastray = lastdone = 0; |
| 350 |
|
++lastray; |
| 351 |
|
if (d == 0.0) { /* zero ==> flush */ |
| 352 |
< |
if ((yres <= 0) | (xres <= 0)) |
| 353 |
< |
waitflush = 1; /* flush right after */ |
| 354 |
< |
account = 1; |
| 355 |
< |
} else { /* else compute */ |
| 356 |
< |
eval_ray(orig, direc, lim_dist ? d : 0.0); |
| 352 |
> |
if ((yres <= 0) | (xres <= 1)) |
| 353 |
> |
waitflush = 1; /* flush after */ |
| 354 |
> |
if (nchild == -1) |
| 355 |
> |
account = 1; |
| 356 |
> |
} else if (imm_irrad) { /* else compute */ |
| 357 |
> |
eval_irrad(orig, direc); |
| 358 |
> |
} else { |
| 359 |
> |
eval_rad(orig, direc, lim_dist ? d : 0.0); |
| 360 |
|
} |
| 361 |
|
done_contrib(); /* accumulate/output */ |
| 362 |
|
++lastdone; |
| 371 |
|
account = 1; /* output accumulated totals */ |
| 372 |
|
done_contrib(); |
| 373 |
|
} |
| 374 |
+ |
lu_done(&ofiletab); /* close output files */ |
| 375 |
|
if (raysleft) |
| 376 |
|
error(USER, "unexpected EOF on input"); |
| 356 |
– |
lu_done(&ofiletab); /* close output files */ |
| 377 |
|
} |
