--- ray/src/rt/rtrace.c 1991/07/22 13:09:58 1.19 +++ ray/src/rt/rtrace.c 2023/11/18 16:21:58 2.108 @@ -1,15 +1,12 @@ -/* Copyright (c) 1986 Regents of the University of California */ - #ifndef lint -static char SCCSid[] = "$SunId$ LBL"; +static const char RCSid[] = "$Id: rtrace.c,v 2.108 2023/11/18 16:21:58 greg Exp $"; #endif - /* * rtrace.c - program and variables for individual ray tracing. - * - * 6/11/86 */ +#include "copyright.h" + /* * Input is in the form: * @@ -24,222 +21,497 @@ static char SCCSid[] = "$SunId$ LBL"; * irradiance values are desired. */ -#include "ray.h" +#include -#include "octree.h" - +#include "platform.h" +#include "ray.h" +#include "ambient.h" +#include "source.h" #include "otypes.h" +#include "otspecial.h" +#include "resolu.h" +#include "random.h" -int dimlist[MAXDIM]; /* sampling dimensions */ -int ndims = 0; /* number of sampling dimensions */ -int samplendx = 0; /* index for this sample */ +extern int inform; /* input format */ +extern int outform; /* output format */ +extern char *outvals; /* output values */ -int imm_irrad = 0; /* compute immediate irradiance? */ +extern int imm_irrad; /* compute immediate irradiance? */ +extern int lim_dist; /* limit distance? */ -int inform = 'a'; /* input format */ -int outform = 'a'; /* output format */ -char *outvals = "v"; /* output specification */ +extern char *tralist[]; /* list of modifers to trace (or no) */ +extern int traincl; /* include == 1, exclude == 0 */ -int hresolu = 0; /* horizontal (scan) size */ -int vresolu = 0; /* vertical resolution */ +extern int hresolu; /* horizontal resolution */ +extern int vresolu; /* vertical resolution */ -double dstrsrc = 0.0; /* square source distribution */ -double shadthresh = .05; /* shadow threshold */ -double shadcert = .5; /* shadow certainty */ -int directrelay = 0; /* number of source relays */ -int vspretest = 512; /* virtual source pretest density */ -int directinvis = 0; /* sources invisible? */ +extern int castonly; /* only doing ray-casting? */ -int maxdepth = 6; /* maximum recursion depth */ -double minweight = 4e-3; /* minimum ray weight */ +extern double (*sens_curve)(SCOLOR scol); /* spectral conversion for 1-channel */ +extern double out_scalefactor; /* output calibration scale factor */ +extern RGBPRIMP out_prims; /* output color primitives (NULL if spectral) */ -COLOR ambval = BLKCOLOR; /* ambient value */ -double ambacc = 0.2; /* ambient accuracy */ -int ambres = 32; /* ambient resolution */ -int ambdiv = 128; /* ambient divisions */ -int ambssamp = 0; /* ambient super-samples */ -int ambounce = 0; /* ambient bounces */ -char *amblist[128]; /* ambient include/exclude list */ -int ambincl = -1; /* include == 1, exclude == 0 */ +#ifndef MAXTSET +#define MAXTSET 8191 /* maximum number in trace set */ +#endif +OBJECT traset[MAXTSET+1]={0}; /* trace include/exclude set */ -extern OBJREC Lamb; /* a Lambertian surface */ +static int Tflag = 0; /* source tracing enabled? */ static RAY thisray; /* for our convenience */ -static int oputo(), oputd(), oputv(), oputl(), - oputp(), oputn(), oputs(), oputw(), oputm(); +static FILE *inpfp = NULL; /* input stream pointer */ -static int (*ray_out[10])(), (*every_out[10])(); -static int castonly; +static FVECT *inp_queue = NULL; /* ray input queue if flushing */ +static int inp_qpos = 0; /* next ray to return */ +static int inp_qend = 0; /* number of rays in this work group */ -static int puta(), putf(), putd(); +typedef void putf_t(RREAL *v, int n); +static putf_t puta, putd, putf; -static int (*putreal)(); +typedef void oputf_t(RAY *r); +static oputf_t oputo, oputd, oputv, oputV, oputl, oputL, oputc, oputp, + oputr, oputR, oputx, oputX, oputn, oputN, oputs, + oputw, oputW, oputm, oputM, oputtilde; +extern void tranotify(OBJECT obj); +static int is_fifo(FILE *fp); +static void bogusray(void); +static void raycast(RAY *r); +static void rayirrad(RAY *r); +static void rtcompute(FVECT org, FVECT dir, double dmax); +static int printvals(RAY *r); +static int getvec(FVECT vec, int fmt, FILE *fp); +static int iszerovec(const FVECT vec); +static double nextray(FVECT org, FVECT dir); +static void tabin(RAY *r); +static void ourtrace(RAY *r); -quit(code) /* quit program */ -int code; +static void putscolor(const COLORV *scol); + +static oputf_t *ray_out[32], *every_out[32]; +static putf_t *putreal; + + +void +quit( /* quit program */ + int code +) { + if (ray_pnprocs > 0) /* close children if any */ + ray_pclose(0); + else if (ray_pnprocs < 0) + _exit(code); /* avoid flush() in child */ +#ifndef NON_POSIX + else { + headclean(); /* delete header file */ + pfclean(); /* clean up persist files */ + } +#endif exit(code); } -rtrace(fname) /* trace rays from file */ -char *fname; +const char * +formstr( /* return format identifier */ + int f +) { - long vcount = hresolu>1 ? hresolu*vresolu : vresolu; - long nextflush = hresolu; + switch (f) { + case 'a': return("ascii"); + case 'f': return("float"); + case 'd': return("double"); + case 'c': + if (out_prims == NULL) + return(SPECFMT); + if (out_prims == xyzprims) + return(CIEFMT); + return(COLRFMT); + } + return("unknown"); +} + + +static void +trace_sources(void) /* trace rays to light sources, also */ +{ + int sn; + + for (sn = 0; sn < nsources; sn++) + source[sn].sflags |= SFOLLOW; +} + + +void +rtrace( /* trace rays from file */ + char *fname, + int nproc +) +{ + unsigned long vcount = (hresolu > 1) ? (unsigned long)hresolu*vresolu + : (unsigned long)vresolu; + long nextflush = (!vresolu | (hresolu <= 1)) * hresolu; + int something2flush = 0; FILE *fp; + double d; FVECT orig, direc; /* set up input */ if (fname == NULL) - fp = stdin; - else if ((fp = fopen(fname, "r")) == NULL) { + inpfp = stdin; + else if ((inpfp = fopen(fname, "r")) == NULL) { sprintf(errmsg, "cannot open input file \"%s\"", fname); error(SYSTEM, errmsg); } +#ifdef getc_unlocked + flockfile(inpfp); /* avoid lock/unlock overhead */ + flockfile(stdout); +#endif + if (inform != 'a') + SET_FILE_BINARY(inpfp); /* set up output */ - setoutput(outvals); - switch (outform) { - case 'a': putreal = puta; break; - case 'f': putreal = putf; break; - case 'd': putreal = putd; break; + if (castonly || every_out[0] != NULL) + nproc = 1; /* don't bother multiprocessing */ + if (every_out[0] != NULL) { + trace = ourtrace; /* enable full tree tracing */ + if (Tflag) /* light sources, too? */ + trace_sources(); } - /* process file */ - while (getvec(orig, inform, fp) == 0 && - getvec(direc, inform, fp) == 0) { - - if (normalize(direc) == 0.0) { /* zero ==> flush */ - fflush(stdout); - continue; - } - samplendx++; - /* compute and print */ - if (imm_irrad) - irrad(orig, direc); + if ((nextflush > 0) & (nproc > nextflush)) { + error(WARNING, "reducing number of processes to match flush interval"); + nproc = nextflush; + } + if (nproc > 1) { /* start multiprocessing */ + ray_popen(nproc); + ray_fifo_out = printvals; + } + if (hresolu > 0) { + if (vresolu > 0) + fprtresolu(hresolu, vresolu, stdout); else - traceray(orig, direc); - /* flush if time */ - if (--nextflush == 0) { fflush(stdout); - nextflush = hresolu; + } + /* process input rays */ + while ((d = nextray(orig, direc)) >= 0.0) { + if (d == 0.0) { /* flush request? */ + if (something2flush) { + if (ray_pnprocs > 1 && ray_fifo_flush() < 0) + error(USER, "child(ren) died"); + bogusray(); + fflush(stdout); + nextflush = (!vresolu | (hresolu <= 1)) * hresolu; + something2flush = 0; + } else + bogusray(); + } else { /* compute and print */ + rtcompute(orig, direc, lim_dist ? d : 0.0); + if (!--nextflush) { /* flush if time */ + if (ray_pnprocs > 1 && ray_fifo_flush() < 0) + error(USER, "child(ren) died"); + fflush(stdout); + nextflush = hresolu; + } else + something2flush = 1; } if (ferror(stdout)) error(SYSTEM, "write error"); - if (--vcount == 0) /* check for end */ + if (vcount && !--vcount) /* check for end */ break; } - if (vcount > 0) - error(USER, "read error"); - fclose(fp); + if (ray_pnprocs > 1) { /* clean up children */ + if (ray_fifo_flush() < 0) + error(USER, "unable to complete processing"); + ray_pclose(0); + } + if (vcount) + error(WARNING, "unexpected EOF on input"); + if (fflush(stdout) < 0) + error(SYSTEM, "write error"); + if (fname != NULL) { + fclose(inpfp); + inpfp = NULL; + } + nextray(NULL, NULL); } -setoutput(vs) /* set up output tables */ -register char *vs; +int +setrtoutput(void) /* set up output tables, return #comp */ { - extern int ourtrace(), (*trace)(); - register int (**table)() = ray_out; + char *vs = outvals; + oputf_t **table = ray_out; + const int nco = (sens_curve != NULL) ? 1 : + (out_prims != NULL) ? 3 : NCSAMP; + int ncomp = 0; - castonly = 1; - while (*vs) - switch (*vs++) { + if (!*vs) + error(USER, "empty output specification"); + + switch (outform) { /* make sure (*putreal)() calls someone! */ + case 'a': putreal = puta; break; + case 'f': putreal = putf; break; + case 'd': putreal = putd; break; + case 'c': + if (outvals[1] || !strchr("vrx", outvals[0])) + error(USER, "color format only with -ov, -or, -ox"); + if (nco < 3) + error(USER, "color format incompatible with -pY, -pS, -pM"); + break; + default: + error(CONSISTENCY, "botched output format"); + } + castonly = 1; /* sets castonly as side-effect */ + do + switch (*vs) { + case 'T': /* trace sources */ + Tflag++; + /* fall through */ case 't': /* trace */ + if (!vs[1]) break; *table = NULL; table = every_out; - trace = ourtrace; castonly = 0; break; case 'o': /* origin */ *table++ = oputo; + ncomp += 3; break; case 'd': /* direction */ *table++ = oputd; + ncomp += 3; break; + case 'r': /* reflected contrib. */ + *table++ = oputr; + ncomp += nco; + castonly = 0; + break; + case 'R': /* reflected distance */ + *table++ = oputR; + ncomp++; + castonly = 0; + break; + case 'x': /* xmit contrib. */ + *table++ = oputx; + ncomp += nco; + castonly = 0; + break; + case 'X': /* xmit distance */ + *table++ = oputX; + ncomp++; + castonly = 0; + break; case 'v': /* value */ *table++ = oputv; + ncomp += nco; castonly = 0; break; - case 'l': /* length */ + case 'V': /* contribution */ + *table++ = oputV; + ncomp += nco; + castonly = 0; + if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) + error(WARNING, + "-otV accuracy depends on -aa 0 -as 0"); + break; + case 'l': /* effective distance */ *table++ = oputl; + ncomp++; castonly = 0; break; + case 'c': /* local coordinates */ + *table++ = oputc; + ncomp += 2; + break; + case 'L': /* single ray length */ + *table++ = oputL; + ncomp++; + break; case 'p': /* point */ *table++ = oputp; + ncomp += 3; break; - case 'n': /* normal */ + case 'n': /* perturbed normal */ *table++ = oputn; + ncomp += 3; + castonly = 0; break; + case 'N': /* unperturbed normal */ + *table++ = oputN; + ncomp += 3; + break; case 's': /* surface */ *table++ = oputs; + ncomp++; break; case 'w': /* weight */ *table++ = oputw; + ncomp++; break; + case 'W': /* coefficient */ + *table++ = oputW; + ncomp += nco; + castonly = 0; + if (ambounce > 0 && (ambacc > FTINY) | (ambssamp > 0)) + error(WARNING, + "-otW accuracy depends on -aa 0 -as 0"); + break; case 'm': /* modifier */ *table++ = oputm; + ncomp++; break; + case 'M': /* material */ + *table++ = oputM; + ncomp++; + break; + case '~': /* tilde */ + *table++ = oputtilde; + break; + default: + sprintf(errmsg, "unrecognized output option '%c'", *vs); + error(USER, errmsg); } + while (*++vs); + *table = NULL; + if (*every_out != NULL) + ncomp = 0; + /* compatibility */ + if ((do_irrad | imm_irrad) && castonly) + error(USER, "-I+ and -i+ options require some value output"); + for (table = ray_out; *table != NULL; table++) { + if ((*table == oputV) | (*table == oputW)) + error(WARNING, "-oVW options require trace mode"); + if ((do_irrad | imm_irrad) && + (*table == oputr) | (*table == oputR) | + (*table == oputx) | (*table == oputX)) + error(WARNING, "-orRxX options incompatible with -I+ and -i+"); + } + return(ncomp); } -traceray(org, dir) /* compute and print ray value(s) */ -FVECT org, dir; +static void +bogusray(void) /* print out empty record */ { - register int (**tp)(); + rayorigin(&thisray, PRIMARY, NULL, NULL); + printvals(&thisray); +} - VCOPY(thisray.rorg, org); - VCOPY(thisray.rdir, dir); - rayorigin(&thisray, NULL, PRIMARY, 1.0); - if (castonly) - localhit(&thisray, &thescene) || sourcehit(&thisray); - else - rayvalue(&thisray); - if (ray_out[0] == NULL) +static void +raycast( /* compute first ray intersection only */ + RAY *r +) +{ + if (!localhit(r, &thescene)) { + if (r->ro == &Aftplane) { /* clipped */ + r->ro = NULL; + r->rot = FHUGE; + } else + sourcehit(r); + } +} + + +static void +rayirrad( /* compute irradiance rather than radiance */ + RAY *r +) +{ + void (*old_revf)(RAY *) = r->revf; + /* pretend we hit surface */ + r->rxt = r->rot = 1e-5; + VSUM(r->rop, r->rorg, r->rdir, r->rot); + r->ron[0] = -r->rdir[0]; + r->ron[1] = -r->rdir[1]; + r->ron[2] = -r->rdir[2]; + r->rod = 1.0; + /* compute result */ + r->revf = raytrace; + (*ofun[Lamb.otype].funp)(&Lamb, r); + r->revf = old_revf; +} + + +static void +rtcompute( /* compute and print ray value(s) */ + FVECT org, + FVECT dir, + double dmax +) +{ + /* set up ray */ + if (imm_irrad) { + VSUM(thisray.rorg, org, dir, 1.1e-4); + thisray.rdir[0] = -dir[0]; + thisray.rdir[1] = -dir[1]; + thisray.rdir[2] = -dir[2]; + thisray.rmax = 0.0; + } else { + VCOPY(thisray.rorg, org); + VCOPY(thisray.rdir, dir); + thisray.rmax = dmax; + } + rayorigin(&thisray, PRIMARY, NULL, NULL); + if (imm_irrad) + thisray.revf = rayirrad; + else if (castonly) + thisray.revf = raycast; + if (ray_pnprocs > 1) { /* multiprocessing FIFO? */ + if (ray_fifo_in(&thisray) < 0) + error(USER, "lost children"); return; + } + samplendx++; /* else do it ourselves */ + rayvalue(&thisray); + printvals(&thisray); +} + + +static int +printvals( /* print requested ray values */ + RAY *r +) +{ + oputf_t **tp; + + if (ray_out[0] == NULL) + return(0); for (tp = ray_out; *tp != NULL; tp++) - (**tp)(&thisray); + (**tp)(r); if (outform == 'a') putchar('\n'); + return(1); } -irrad(org, dir) /* compute immediate irradiance value */ -FVECT org, dir; +static int +is_fifo( /* check if file pointer connected to pipe */ + FILE *fp +) { - register int i; +#ifdef S_ISFIFO + struct stat sbuf; - for (i = 0; i < 3; i++) { - thisray.rorg[i] = org[i] + dir[i]; - thisray.rdir[i] = -dir[i]; - } - rayorigin(&thisray, NULL, PRIMARY, 1.0); - /* pretend we hit surface */ - thisray.rot = 1.0; - thisray.rod = 1.0; - VCOPY(thisray.ron, dir); - for (i = 0; i < 3; i++) /* fudge factor */ - thisray.rop[i] = org[i] + 1e-4*dir[i]; - /* compute and print */ - (*ofun[Lamb.otype].funp)(&Lamb, &thisray); - oputv(&thisray); - if (outform == 'a') - putchar('\n'); + if (fstat(fileno(fp), &sbuf) < 0) + error(SYSTEM, "fstat() failed on input stream"); + return(S_ISFIFO(sbuf.st_mode)); +#else + return (fp == stdin); /* just a guess, really */ +#endif } -getvec(vec, fmt, fp) /* get a vector from fp */ -register FVECT vec; -int fmt; -FILE *fp; +static int +getvec( /* get a vector from fp */ + FVECT vec, + int fmt, + FILE *fp +) { - extern char *fgetword(); - extern double atof(); static float vf[3]; + static double vd[3]; char buf[32]; - register int i; + int i; switch (fmt) { case 'a': /* ascii */ @@ -251,118 +523,312 @@ FILE *fp; } break; case 'f': /* binary float */ - if (fread((char *)vf, sizeof(float), 3, fp) != 3) + if (getbinary(vf, sizeof(float), 3, fp) != 3) return(-1); - vec[0] = vf[0]; vec[1] = vf[1]; vec[2] = vf[2]; + VCOPY(vec, vf); break; case 'd': /* binary double */ - if (fread((char *)vec, sizeof(double), 3, fp) != 3) + if (getbinary(vd, sizeof(double), 3, fp) != 3) return(-1); + VCOPY(vec, vd); break; + default: + error(CONSISTENCY, "botched input format"); } return(0); } -static -ourtrace(r) /* print ray values */ -RAY *r; +static int +iszerovec(const FVECT vec) { - register int (**tp)(); + return (vec[0] == 0.0) & (vec[1] == 0.0) & (vec[2] == 0.0); +} + +static double +nextray( /* return next ray in work group (-1.0 if EOF) */ + FVECT org, + FVECT dir +) +{ + const size_t qlength = !vresolu * hresolu; + + if ((org == NULL) | (dir == NULL)) { + if (inp_queue != NULL) /* asking to free queue */ + free(inp_queue); + inp_queue = NULL; + inp_qpos = inp_qend = 0; + return(-1.); + } + if (!inp_qend) { /* initialize FIFO queue */ + int rsiz = 6*20; /* conservative ascii ray size */ + if (inform == 'f') rsiz = 6*sizeof(float); + else if (inform == 'd') rsiz = 6*sizeof(double); + /* check against pipe limit */ + if (qlength*rsiz > 512 && is_fifo(inpfp)) + inp_queue = (FVECT *)malloc(sizeof(FVECT)*2*qlength); + inp_qend = -(inp_queue == NULL); /* flag for no queue */ + } + if (inp_qend < 0) { /* not queuing? */ + if (getvec(org, inform, inpfp) < 0 || + getvec(dir, inform, inpfp) < 0) + return(-1.); + return normalize(dir); + } + if (inp_qpos >= inp_qend) { /* need to refill input queue? */ + for (inp_qend = 0; inp_qend < qlength; inp_qend++) { + if (getvec(inp_queue[2*inp_qend], inform, inpfp) < 0 + || getvec(inp_queue[2*inp_qend+1], + inform, inpfp) < 0) + break; /* hit EOF */ + if (iszerovec(inp_queue[2*inp_qend+1])) { + ++inp_qend; /* flush request */ + break; + } + } + inp_qpos = 0; + } + if (inp_qpos >= inp_qend) /* unexpected EOF? */ + return(-1.); + VCOPY(org, inp_queue[2*inp_qpos]); + VCOPY(dir, inp_queue[2*inp_qpos+1]); + ++inp_qpos; + return normalize(dir); +} + + +void +tranotify( /* record new modifier */ + OBJECT obj +) +{ + static int hitlimit = 0; + OBJREC *o = objptr(obj); + char **tralp; + + if (obj == OVOID) { /* starting over */ + traset[0] = 0; + hitlimit = 0; + return; + } + if (hitlimit || !ismodifier(o->otype)) + return; + for (tralp = tralist; *tralp != NULL; tralp++) + if (!strcmp(o->oname, *tralp)) { + if (traset[0] >= MAXTSET) { + error(WARNING, "too many modifiers in trace list"); + hitlimit++; + return; /* should this be fatal? */ + } + insertelem(traset, obj); + return; + } +} + + +static void +ourtrace( /* print ray values */ + RAY *r +) +{ + oputf_t **tp; + if (every_out[0] == NULL) return; + if (r->ro == NULL) { + if (traincl == 1) + return; + } else if (traincl != -1 && traincl != inset(traset, r->ro->omod)) + return; tabin(r); for (tp = every_out; *tp != NULL; tp++) (**tp)(r); - putchar('\n'); + if (outform == 'a') + putchar('\n'); } -static -tabin(r) /* tab in appropriate amount */ -RAY *r; +static void +tabin( /* tab in appropriate amount */ + RAY *r +) { - register RAY *rp; + const RAY *rp; for (rp = r->parent; rp != NULL; rp = rp->parent) putchar('\t'); } -static -oputo(r) /* print origin */ -register RAY *r; +static void +oputo( /* print origin */ + RAY *r +) { - (*putreal)(r->rorg[0]); - (*putreal)(r->rorg[1]); - (*putreal)(r->rorg[2]); + (*putreal)(r->rorg, 3); } -static -oputd(r) /* print direction */ -register RAY *r; +static void +oputd( /* print direction */ + RAY *r +) { - (*putreal)(r->rdir[0]); - (*putreal)(r->rdir[1]); - (*putreal)(r->rdir[2]); + (*putreal)(r->rdir, 3); } -static -oputv(r) /* print value */ -register RAY *r; +static void +oputr( /* print mirrored contribution */ + RAY *r +) { - (*putreal)(colval(r->rcol,RED)); - (*putreal)(colval(r->rcol,GRN)); - (*putreal)(colval(r->rcol,BLU)); + RREAL cval[3]; + + cval[0] = colval(r->mcol,RED); + cval[1] = colval(r->mcol,GRN); + cval[2] = colval(r->mcol,BLU); + (*putreal)(cval, 3); } -static -oputl(r) /* print length */ -register RAY *r; + +static void +oputR( /* print mirrored distance */ + RAY *r +) { - (*putreal)(r->rt); + (*putreal)(&r->rmt, 1); } -static -oputp(r) /* print point */ -register RAY *r; +static void +oputx( /* print unmirrored contribution */ + RAY *r +) { - if (r->rot < FHUGE) { - (*putreal)(r->rop[0]); - (*putreal)(r->rop[1]); - (*putreal)(r->rop[2]); - } else { - (*putreal)(0.0); - (*putreal)(0.0); - (*putreal)(0.0); + SCOLOR cdiff; + + copyscolor(cdiff, r->rcol); + sopscolor(cdiff, -=, r->mcol); + + putscolor(cdiff); +} + + +static void +oputX( /* print unmirrored distance */ + RAY *r +) +{ + (*putreal)(&r->rxt, 1); +} + + +static void +oputv( /* print value */ + RAY *r +) +{ + putscolor(r->rcol); +} + + +static void +oputV( /* print value contribution */ + RAY *r +) +{ + SCOLOR contr; + + raycontrib(contr, r, PRIMARY); + smultscolor(contr, r->rcol); + putscolor(contr); +} + + +static void +oputl( /* print effective distance */ + RAY *r +) +{ + RREAL d = raydistance(r); + + (*putreal)(&d, 1); +} + + +static void +oputL( /* print single ray length */ + RAY *r +) +{ + (*putreal)(&r->rot, 1); +} + + +static void +oputc( /* print local coordinates */ + RAY *r +) +{ + (*putreal)(r->uv, 2); +} + + +static RREAL vdummy[3] = {0.0, 0.0, 0.0}; + + +static void +oputp( /* print intersection point */ + RAY *r +) +{ + (*putreal)(r->rop, 3); /* set to ray origin if distant or no hit */ +} + + +static void +oputN( /* print unperturbed normal */ + RAY *r +) +{ + if (r->ro == NULL) { /* zero vector if clipped or no hit */ + (*putreal)(vdummy, 3); + return; } + if (r->rflips & 1) { /* undo any flippin' flips */ + FVECT unrm; + unrm[0] = -r->ron[0]; + unrm[1] = -r->ron[1]; + unrm[2] = -r->ron[2]; + (*putreal)(unrm, 3); + } else + (*putreal)(r->ron, 3); } -static -oputn(r) /* print normal */ -register RAY *r; +static void +oputn( /* print perturbed normal */ + RAY *r +) { - if (r->rot < FHUGE) { - (*putreal)(r->ron[0]); - (*putreal)(r->ron[1]); - (*putreal)(r->ron[2]); - } else { - (*putreal)(0.0); - (*putreal)(0.0); - (*putreal)(0.0); + FVECT pnorm; + + if (r->ro == NULL) { /* clipped or no hit */ + (*putreal)(vdummy, 3); + return; } + raynormal(pnorm, r); + (*putreal)(pnorm, 3); } -static -oputs(r) /* print name */ -register RAY *r; +static void +oputs( /* print name */ + RAY *r +) { if (r->ro != NULL) fputs(r->ro->oname, stdout); @@ -372,47 +838,177 @@ register RAY *r; } -static -oputw(r) /* print weight */ -register RAY *r; +static void +oputw( /* print weight */ + RAY *r +) { - (*putreal)(r->rweight); + RREAL rwt = r->rweight; + + (*putreal)(&rwt, 1); } -static -oputm(r) /* print modifier */ -register RAY *r; +static void +oputW( /* print coefficient */ + RAY *r +) { + SCOLOR contr; + /* shadow ray not on source? */ + if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) + scolorblack(contr); + else + raycontrib(contr, r, PRIMARY); + + putscolor(contr); +} + + +static void +oputm( /* print modifier */ + RAY *r +) +{ if (r->ro != NULL) - fputs(objptr(r->ro->omod)->oname, stdout); + if (r->ro->omod != OVOID) + fputs(objptr(r->ro->omod)->oname, stdout); + else + fputs(VOIDID, stdout); else putchar('*'); putchar('\t'); } -static -puta(v) /* print ascii value */ -double v; +static void +oputM( /* print material */ + RAY *r +) { - printf("%e\t", v); + OBJREC *mat; + + if (r->ro != NULL) { + if ((mat = findmaterial(r->ro)) != NULL) + fputs(mat->oname, stdout); + else + fputs(VOIDID, stdout); + } else + putchar('*'); + putchar('\t'); } -static -putd(v) /* print binary double */ -double v; +static void +oputtilde( /* output tilde (spacer) */ + RAY *r +) { - fwrite((char *)&v, sizeof(v), 1, stdout); + fputs("~\t", stdout); } -static -putf(v) /* print binary float */ -double v; +static void +puta( /* print ascii value(s) */ + RREAL *v, int n +) { - float f = v; + if (n == 3) { + printf("%e\t%e\t%e\t", v[0], v[1], v[2]); + return; + } + while (n--) + printf("%e\t", *v++); +} - fwrite((char *)&f, sizeof(f), 1, stdout); + +static void +putd(RREAL *v, int n) /* output binary double(s) */ +{ +#ifdef SMLFLT + double da[3]; + int i; + + if (n > 3) + error(INTERNAL, "code error in putd()"); + for (i = n; i--; ) + da[i] = v[i]; + putbinary(da, sizeof(double), n, stdout); +#else + putbinary(v, sizeof(RREAL), n, stdout); +#endif +} + + +static void +putf(RREAL *v, int n) /* output binary float(s) */ +{ +#ifndef SMLFLT + float fa[3]; + int i; + + if (n > 3) + error(INTERNAL, "code error in putf()"); + for (i = n; i--; ) + fa[i] = v[i]; + putbinary(fa, sizeof(float), n, stdout); +#else + putbinary(v, sizeof(RREAL), n, stdout); +#endif +} + + +static void +putscolor(const COLORV *scol) /* output (spectral) color */ +{ + static COLORMAT xyz2myrgbmat; + SCOLOR my_scol; + COLOR col; + /* apply scalefactor if any */ + if (out_scalefactor != 1.) { + copyscolor(my_scol, scol); + scalescolor(my_scol, out_scalefactor); + scol = my_scol; + } + if (sens_curve != NULL) { /* single channel output */ + RREAL v = (*sens_curve)(scol); + (*putreal)(&v, 1); + return; + } + if (out_prims == NULL) { /* full spectral reporting */ + if (outform == 'c') { + SCOLR sclr; + scolor_scolr(sclr, scol); + putbinary(sclr, LSCOLR, 1, stdout); + } else if (sizeof(RREAL) != sizeof(COLORV)) { + RREAL sreal[MAXCSAMP]; + int i = NCSAMP; + while (i--) sreal[i] = scol[i]; + (*putreal)(sreal, NCSAMP); + } else + (*putreal)((RREAL *)scol, NCSAMP); + return; + } + if (out_prims == xyzprims) { + scolor_cie(col, scol); + } else if (out_prims == stdprims) { + scolor_rgb(col, scol); + } else { + COLOR xyz; + if (xyz2myrgbmat[0][0] == 0) + compxyz2rgbWBmat(xyz2myrgbmat, out_prims); + scolor_cie(xyz, scol); + colortrans(col, xyz2myrgbmat, xyz); + clipgamut(col, xyz[CIEY], CGAMUT_LOWER, cblack, cwhite); + } + if (outform == 'c') { + COLR clr; + setcolr(clr, colval(col,RED), colval(col,GRN), colval(col,BLU)); + putbinary(clr, sizeof(COLR), 1, stdout); + } else if (sizeof(RREAL) != sizeof(COLORV)) { + RREAL creal[3]; + copycolor(creal, col); + (*putreal)(creal, 3); + } else + (*putreal)((RREAL *)col, 3); }