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/* Copyright (c) 1992 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* rtrace.c - program and variables for individual ray tracing. |
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* |
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* 6/11/86 |
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*/ |
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#include "copyright.h" |
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|
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/* |
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* Input is in the form: |
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* |
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* irradiance values are desired. |
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*/ |
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|
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#include "ray.h" |
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#include <time.h> |
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|
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#include "octree.h" |
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|
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#include "platform.h" |
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#include "ray.h" |
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#include "ambient.h" |
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#include "source.h" |
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#include "otypes.h" |
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|
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#include "otspecial.h" |
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#include "resolu.h" |
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#include "random.h" |
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|
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int dimlist[MAXDIM]; /* sampling dimensions */ |
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int ndims = 0; /* number of sampling dimensions */ |
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int samplendx = 0; /* index for this sample */ |
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extern int inform; /* input format */ |
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extern int outform; /* output format */ |
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extern char *outvals; /* output values */ |
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|
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int imm_irrad = 0; /* compute immediate irradiance? */ |
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extern int imm_irrad; /* compute immediate irradiance? */ |
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extern int lim_dist; /* limit distance? */ |
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|
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int inform = 'a'; /* input format */ |
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int outform = 'a'; /* output format */ |
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char *outvals = "v"; /* output specification */ |
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extern char *tralist[]; /* list of modifers to trace (or no) */ |
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extern int traincl; /* include == 1, exclude == 0 */ |
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|
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int hresolu = 0; /* horizontal (scan) size */ |
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int vresolu = 0; /* vertical resolution */ |
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extern int hresolu; /* horizontal resolution */ |
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extern int vresolu; /* vertical resolution */ |
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|
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .05; /* shadow threshold */ |
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double shadcert = .5; /* shadow certainty */ |
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int directrelay = 1; /* number of source relays */ |
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int vspretest = 512; /* virtual source pretest density */ |
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int directvis = 1; /* sources visible? */ |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
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extern int castonly; /* only doing ray-casting? */ |
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|
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double specthresh = .15; /* specular sampling threshold */ |
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double specjitter = 1.; /* specular sampling jitter */ |
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#ifndef MAXTSET |
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#define MAXTSET 8191 /* maximum number in trace set */ |
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#endif |
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OBJECT traset[MAXTSET+1]={0}; /* trace include/exclude set */ |
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|
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int maxdepth = 6; /* maximum recursion depth */ |
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double minweight = 4e-3; /* minimum ray weight */ |
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static int Tflag = 0; /* source tracing enabled? */ |
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|
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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double ambacc = 0.2; /* ambient accuracy */ |
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int ambres = 32; /* ambient resolution */ |
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int ambdiv = 128; /* ambient divisions */ |
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int ambssamp = 0; /* ambient super-samples */ |
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int ambounce = 0; /* ambient bounces */ |
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char *amblist[128]; /* ambient include/exclude list */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
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static RAY thisray; /* for our convenience */ |
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|
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extern OBJREC Lamb; /* a Lambertian surface */ |
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static FILE *inpfp = NULL; /* input stream pointer */ |
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|
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static RAY thisray; /* for our convenience */ |
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static FVECT *inp_queue = NULL; /* ray input queue if flushing */ |
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static int inp_qpos = 0; /* next ray to return */ |
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static int inp_qend = 0; /* number of rays in this work group */ |
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static int oputo(), oputd(), oputv(), oputl(), oputL(), |
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oputp(), oputn(), oputN(), oputs(), oputw(), oputm(); |
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typedef void putf_t(RREAL *v, int n); |
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static putf_t puta, putd, putf, putrgbe; |
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|
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static int ourtrace(), tabin(); |
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static int (*ray_out[10])(), (*every_out[10])(); |
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static int castonly; |
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typedef void oputf_t(RAY *r); |
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static oputf_t oputo, oputd, oputv, oputV, oputl, oputL, oputc, oputp, |
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oputr, oputR, oputx, oputX, oputn, oputN, oputs, |
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oputw, oputW, oputm, oputM, oputtilde; |
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|
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static int puta(), putf(), putd(); |
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extern void tranotify(OBJECT obj); |
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static int is_fifo(FILE *fp); |
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static void bogusray(void); |
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static void raycast(RAY *r); |
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static void rayirrad(RAY *r); |
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static void rtcompute(FVECT org, FVECT dir, double dmax); |
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static int printvals(RAY *r); |
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static int getvec(FVECT vec, int fmt, FILE *fp); |
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static int iszerovec(const FVECT vec); |
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static double nextray(FVECT org, FVECT dir); |
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static void tabin(RAY *r); |
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static void ourtrace(RAY *r); |
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|
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static int (*putreal)(); |
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static oputf_t *ray_out[32], *every_out[32]; |
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static putf_t *putreal; |
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|
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quit(code) /* quit program */ |
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int code; |
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void |
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quit( /* quit program */ |
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int code |
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) |
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{ |
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#ifndef NIX |
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headclean(); /* delete header file */ |
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pfclean(); /* clean up persist files */ |
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if (ray_pnprocs > 0) /* close children if any */ |
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ray_pclose(0); |
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else if (ray_pnprocs < 0) |
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_exit(code); /* avoid flush() in child */ |
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#ifndef NON_POSIX |
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else { |
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headclean(); /* delete header file */ |
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pfclean(); /* clean up persist files */ |
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} |
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#endif |
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exit(code); |
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} |
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|
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char * |
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formstr(f) /* return format identifier */ |
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int f; |
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const char * |
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formstr( /* return format identifier */ |
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int f |
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) |
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{ |
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switch (f) { |
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case 'a': return("ascii"); |
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} |
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rtrace(fname) /* trace rays from file */ |
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char *fname; |
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static void |
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trace_sources(void) /* trace rays to light sources, also */ |
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{ |
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long vcount = hresolu>1 ? hresolu*vresolu : vresolu; |
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long nextflush = hresolu; |
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int sn; |
128 |
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|
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for (sn = 0; sn < nsources; sn++) |
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source[sn].sflags |= SFOLLOW; |
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} |
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|
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|
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void |
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rtrace( /* trace rays from file */ |
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char *fname, |
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int nproc |
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) |
139 |
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{ |
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unsigned long vcount = (hresolu > 1) ? (unsigned long)hresolu*vresolu |
141 |
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: (unsigned long)vresolu; |
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long nextflush = (!vresolu | (hresolu <= 1)) * hresolu; |
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int something2flush = 0; |
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FILE *fp; |
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double d; |
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FVECT orig, direc; |
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/* set up input */ |
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if (fname == NULL) |
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fp = stdin; |
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else if ((fp = fopen(fname, "r")) == NULL) { |
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inpfp = stdin; |
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else if ((inpfp = fopen(fname, "r")) == NULL) { |
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sprintf(errmsg, "cannot open input file \"%s\"", fname); |
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error(SYSTEM, errmsg); |
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} |
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#ifdef MSDOS |
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if (inform != 'a') |
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setmode(fileno(fp), O_BINARY); |
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#ifdef getc_unlocked |
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flockfile(inpfp); /* avoid lock/unlock overhead */ |
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flockfile(stdout); |
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#endif |
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if (inform != 'a') |
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SET_FILE_BINARY(inpfp); |
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/* set up output */ |
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setoutput(outvals); |
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switch (outform) { |
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case 'a': putreal = puta; break; |
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case 'f': putreal = putf; break; |
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case 'd': putreal = putd; break; |
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case 'c': |
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if (strcmp(outvals, "v")) |
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error(USER, "color format with value output only"); |
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break; |
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default: |
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error(CONSISTENCY, "botched output format"); |
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if (castonly || every_out[0] != NULL) |
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nproc = 1; /* don't bother multiprocessing */ |
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if (every_out[0] != NULL) { |
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trace = ourtrace; /* enable full tree tracing */ |
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if (Tflag) /* light sources, too? */ |
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trace_sources(); |
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} |
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if ((nextflush > 0) & (nproc > nextflush)) { |
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error(WARNING, "reducing number of processes to match flush interval"); |
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nproc = nextflush; |
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} |
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if (nproc > 1) { /* start multiprocessing */ |
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ray_popen(nproc); |
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ray_fifo_out = printvals; |
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} |
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if (hresolu > 0) { |
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if (vresolu > 0) |
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fprtresolu(hresolu, vresolu, stdout); |
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fflush(stdout); |
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} |
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/* process file */ |
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while (getvec(orig, inform, fp) == 0 && |
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getvec(direc, inform, fp) == 0) { |
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|
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if (normalize(direc) == 0.0) { /* zero ==> flush */ |
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fflush(stdout); |
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continue; |
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} |
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samplendx++; |
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/* compute and print */ |
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if (imm_irrad) |
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irrad(orig, direc); |
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else |
161 |
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traceray(orig, direc); |
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/* flush if time */ |
163 |
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if (--nextflush == 0) { |
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fflush(stdout); |
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nextflush = hresolu; |
181 |
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} |
182 |
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/* process input rays */ |
183 |
> |
while ((d = nextray(orig, direc)) >= 0.0) { |
184 |
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if (d == 0.0) { /* flush request? */ |
185 |
> |
if (something2flush) { |
186 |
> |
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
187 |
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error(USER, "child(ren) died"); |
188 |
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bogusray(); |
189 |
> |
fflush(stdout); |
190 |
> |
nextflush = (!vresolu | (hresolu <= 1)) * hresolu; |
191 |
> |
something2flush = 0; |
192 |
> |
} else |
193 |
> |
bogusray(); |
194 |
> |
} else { /* compute and print */ |
195 |
> |
rtcompute(orig, direc, lim_dist ? d : 0.0); |
196 |
> |
if (!--nextflush) { /* flush if time */ |
197 |
> |
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
198 |
> |
error(USER, "child(ren) died"); |
199 |
> |
fflush(stdout); |
200 |
> |
nextflush = hresolu; |
201 |
> |
} else |
202 |
> |
something2flush = 1; |
203 |
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} |
204 |
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if (ferror(stdout)) |
205 |
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error(SYSTEM, "write error"); |
206 |
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if (--vcount == 0) /* check for end */ |
206 |
> |
if (vcount && !--vcount) /* check for end */ |
207 |
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break; |
208 |
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} |
209 |
< |
fflush(stdout); |
210 |
< |
if (vcount > 0) |
211 |
< |
error(USER, "read error"); |
212 |
< |
if (fname != NULL) |
213 |
< |
fclose(fp); |
209 |
> |
if (ray_pnprocs > 1) { /* clean up children */ |
210 |
> |
if (ray_fifo_flush() < 0) |
211 |
> |
error(USER, "unable to complete processing"); |
212 |
> |
ray_pclose(0); |
213 |
> |
} |
214 |
> |
if (vcount) |
215 |
> |
error(WARNING, "unexpected EOF on input"); |
216 |
> |
if (fflush(stdout) < 0) |
217 |
> |
error(SYSTEM, "write error"); |
218 |
> |
if (fname != NULL) { |
219 |
> |
fclose(inpfp); |
220 |
> |
inpfp = NULL; |
221 |
> |
} |
222 |
> |
nextray(NULL, NULL); |
223 |
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} |
224 |
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|
225 |
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|
226 |
< |
setoutput(vs) /* set up output tables */ |
227 |
< |
register char *vs; |
226 |
> |
int |
227 |
> |
setrtoutput(void) /* set up output tables, return #comp */ |
228 |
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{ |
229 |
< |
extern int (*trace)(); |
230 |
< |
register int (**table)() = ray_out; |
229 |
> |
char *vs = outvals; |
230 |
> |
oputf_t **table = ray_out; |
231 |
> |
int ncomp = 0; |
232 |
|
|
233 |
< |
castonly = 1; |
234 |
< |
while (*vs) |
235 |
< |
switch (*vs++) { |
233 |
> |
if (!*vs) |
234 |
> |
error(USER, "empty output specification"); |
235 |
> |
|
236 |
> |
switch (outform) { /* make sure (*putreal)() calls someone! */ |
237 |
> |
case 'a': putreal = puta; break; |
238 |
> |
case 'f': putreal = putf; break; |
239 |
> |
case 'd': putreal = putd; break; |
240 |
> |
case 'c': |
241 |
> |
if (outvals[1] || !strchr("vrx", outvals[0])) |
242 |
> |
error(USER, "color format only with -ov, -or, -ox"); |
243 |
> |
putreal = putrgbe; break; |
244 |
> |
default: |
245 |
> |
error(CONSISTENCY, "botched output format"); |
246 |
> |
} |
247 |
> |
castonly = 1; /* sets castonly as side-effect */ |
248 |
> |
do |
249 |
> |
switch (*vs) { |
250 |
> |
case 'T': /* trace sources */ |
251 |
> |
Tflag++; |
252 |
> |
/* fall through */ |
253 |
|
case 't': /* trace */ |
254 |
+ |
if (!vs[1]) break; |
255 |
|
*table = NULL; |
256 |
|
table = every_out; |
192 |
– |
trace = ourtrace; |
257 |
|
castonly = 0; |
258 |
|
break; |
259 |
|
case 'o': /* origin */ |
260 |
|
*table++ = oputo; |
261 |
+ |
ncomp += 3; |
262 |
|
break; |
263 |
|
case 'd': /* direction */ |
264 |
|
*table++ = oputd; |
265 |
+ |
ncomp += 3; |
266 |
|
break; |
267 |
+ |
case 'r': /* reflected contrib. */ |
268 |
+ |
*table++ = oputr; |
269 |
+ |
ncomp += 3; |
270 |
+ |
castonly = 0; |
271 |
+ |
break; |
272 |
+ |
case 'R': /* reflected distance */ |
273 |
+ |
*table++ = oputR; |
274 |
+ |
ncomp++; |
275 |
+ |
castonly = 0; |
276 |
+ |
break; |
277 |
+ |
case 'x': /* xmit contrib. */ |
278 |
+ |
*table++ = oputx; |
279 |
+ |
ncomp += 3; |
280 |
+ |
castonly = 0; |
281 |
+ |
break; |
282 |
+ |
case 'X': /* xmit distance */ |
283 |
+ |
*table++ = oputX; |
284 |
+ |
ncomp++; |
285 |
+ |
castonly = 0; |
286 |
+ |
break; |
287 |
|
case 'v': /* value */ |
288 |
|
*table++ = oputv; |
289 |
+ |
ncomp += 3; |
290 |
|
castonly = 0; |
291 |
|
break; |
292 |
+ |
case 'V': /* contribution */ |
293 |
+ |
*table++ = oputV; |
294 |
+ |
ncomp += 3; |
295 |
+ |
castonly = 0; |
296 |
+ |
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
297 |
+ |
error(WARNING, |
298 |
+ |
"-otV accuracy depends on -aa 0 -as 0"); |
299 |
+ |
break; |
300 |
|
case 'l': /* effective distance */ |
301 |
|
*table++ = oputl; |
302 |
+ |
ncomp++; |
303 |
|
castonly = 0; |
304 |
|
break; |
305 |
+ |
case 'c': /* local coordinates */ |
306 |
+ |
*table++ = oputc; |
307 |
+ |
ncomp += 2; |
308 |
+ |
break; |
309 |
|
case 'L': /* single ray length */ |
310 |
|
*table++ = oputL; |
311 |
+ |
ncomp++; |
312 |
|
break; |
313 |
|
case 'p': /* point */ |
314 |
|
*table++ = oputp; |
315 |
+ |
ncomp += 3; |
316 |
|
break; |
317 |
|
case 'n': /* perturbed normal */ |
318 |
|
*table++ = oputn; |
319 |
+ |
ncomp += 3; |
320 |
|
castonly = 0; |
321 |
|
break; |
322 |
|
case 'N': /* unperturbed normal */ |
323 |
|
*table++ = oputN; |
324 |
+ |
ncomp += 3; |
325 |
|
break; |
326 |
|
case 's': /* surface */ |
327 |
|
*table++ = oputs; |
328 |
+ |
ncomp++; |
329 |
|
break; |
330 |
|
case 'w': /* weight */ |
331 |
|
*table++ = oputw; |
332 |
+ |
ncomp++; |
333 |
|
break; |
334 |
+ |
case 'W': /* coefficient */ |
335 |
+ |
*table++ = oputW; |
336 |
+ |
ncomp += 3; |
337 |
+ |
castonly = 0; |
338 |
+ |
if (ambounce > 0 && (ambacc > FTINY) | (ambssamp > 0)) |
339 |
+ |
error(WARNING, |
340 |
+ |
"-otW accuracy depends on -aa 0 -as 0"); |
341 |
+ |
break; |
342 |
|
case 'm': /* modifier */ |
343 |
|
*table++ = oputm; |
344 |
+ |
ncomp++; |
345 |
|
break; |
346 |
+ |
case 'M': /* material */ |
347 |
+ |
*table++ = oputM; |
348 |
+ |
ncomp++; |
349 |
+ |
break; |
350 |
+ |
case '~': /* tilde */ |
351 |
+ |
*table++ = oputtilde; |
352 |
+ |
break; |
353 |
+ |
default: |
354 |
+ |
sprintf(errmsg, "unrecognized output option '%c'", *vs); |
355 |
+ |
error(USER, errmsg); |
356 |
|
} |
357 |
+ |
while (*++vs); |
358 |
+ |
|
359 |
|
*table = NULL; |
360 |
+ |
if (*every_out != NULL) |
361 |
+ |
ncomp = 0; |
362 |
+ |
/* compatibility */ |
363 |
+ |
if ((do_irrad | imm_irrad) && castonly) |
364 |
+ |
error(USER, "-I+ and -i+ options require some value output"); |
365 |
+ |
for (table = ray_out; *table != NULL; table++) { |
366 |
+ |
if ((*table == oputV) | (*table == oputW)) |
367 |
+ |
error(WARNING, "-oVW options require trace mode"); |
368 |
+ |
if ((do_irrad | imm_irrad) && |
369 |
+ |
(*table == oputr) | (*table == oputR) | |
370 |
+ |
(*table == oputx) | (*table == oputX)) |
371 |
+ |
error(WARNING, "-orRxX options incompatible with -I+ and -i+"); |
372 |
+ |
} |
373 |
+ |
return(ncomp); |
374 |
|
} |
375 |
|
|
376 |
|
|
377 |
< |
traceray(org, dir) /* compute and print ray value(s) */ |
378 |
< |
FVECT org, dir; |
377 |
> |
static void |
378 |
> |
bogusray(void) /* print out empty record */ |
379 |
|
{ |
380 |
< |
register int (**tp)(); |
380 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
381 |
> |
printvals(&thisray); |
382 |
> |
} |
383 |
|
|
241 |
– |
VCOPY(thisray.rorg, org); |
242 |
– |
VCOPY(thisray.rdir, dir); |
243 |
– |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
244 |
– |
if (castonly) |
245 |
– |
localhit(&thisray, &thescene) || sourcehit(&thisray); |
246 |
– |
else |
247 |
– |
rayvalue(&thisray); |
384 |
|
|
385 |
< |
if (ray_out[0] == NULL) |
385 |
> |
static void |
386 |
> |
raycast( /* compute first ray intersection only */ |
387 |
> |
RAY *r |
388 |
> |
) |
389 |
> |
{ |
390 |
> |
if (!localhit(r, &thescene)) { |
391 |
> |
if (r->ro == &Aftplane) { /* clipped */ |
392 |
> |
r->ro = NULL; |
393 |
> |
r->rot = FHUGE; |
394 |
> |
} else |
395 |
> |
sourcehit(r); |
396 |
> |
} |
397 |
> |
} |
398 |
> |
|
399 |
> |
|
400 |
> |
static void |
401 |
> |
rayirrad( /* compute irradiance rather than radiance */ |
402 |
> |
RAY *r |
403 |
> |
) |
404 |
> |
{ |
405 |
> |
void (*old_revf)(RAY *) = r->revf; |
406 |
> |
/* pretend we hit surface */ |
407 |
> |
r->rxt = r->rot = 1e-5; |
408 |
> |
VSUM(r->rop, r->rorg, r->rdir, r->rot); |
409 |
> |
r->ron[0] = -r->rdir[0]; |
410 |
> |
r->ron[1] = -r->rdir[1]; |
411 |
> |
r->ron[2] = -r->rdir[2]; |
412 |
> |
r->rod = 1.0; |
413 |
> |
/* compute result */ |
414 |
> |
r->revf = raytrace; |
415 |
> |
(*ofun[Lamb.otype].funp)(&Lamb, r); |
416 |
> |
r->revf = old_revf; |
417 |
> |
} |
418 |
> |
|
419 |
> |
|
420 |
> |
static void |
421 |
> |
rtcompute( /* compute and print ray value(s) */ |
422 |
> |
FVECT org, |
423 |
> |
FVECT dir, |
424 |
> |
double dmax |
425 |
> |
) |
426 |
> |
{ |
427 |
> |
/* set up ray */ |
428 |
> |
if (imm_irrad) { |
429 |
> |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
430 |
> |
thisray.rdir[0] = -dir[0]; |
431 |
> |
thisray.rdir[1] = -dir[1]; |
432 |
> |
thisray.rdir[2] = -dir[2]; |
433 |
> |
thisray.rmax = 0.0; |
434 |
> |
} else { |
435 |
> |
VCOPY(thisray.rorg, org); |
436 |
> |
VCOPY(thisray.rdir, dir); |
437 |
> |
thisray.rmax = dmax; |
438 |
> |
} |
439 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
440 |
> |
if (imm_irrad) |
441 |
> |
thisray.revf = rayirrad; |
442 |
> |
else if (castonly) |
443 |
> |
thisray.revf = raycast; |
444 |
> |
if (ray_pnprocs > 1) { /* multiprocessing FIFO? */ |
445 |
> |
if (ray_fifo_in(&thisray) < 0) |
446 |
> |
error(USER, "lost children"); |
447 |
|
return; |
448 |
+ |
} |
449 |
+ |
samplendx++; /* else do it ourselves */ |
450 |
+ |
rayvalue(&thisray); |
451 |
+ |
printvals(&thisray); |
452 |
+ |
} |
453 |
+ |
|
454 |
+ |
|
455 |
+ |
static int |
456 |
+ |
printvals( /* print requested ray values */ |
457 |
+ |
RAY *r |
458 |
+ |
) |
459 |
+ |
{ |
460 |
+ |
oputf_t **tp; |
461 |
+ |
|
462 |
+ |
if (ray_out[0] == NULL) |
463 |
+ |
return(0); |
464 |
|
for (tp = ray_out; *tp != NULL; tp++) |
465 |
< |
(**tp)(&thisray); |
465 |
> |
(**tp)(r); |
466 |
|
if (outform == 'a') |
467 |
|
putchar('\n'); |
468 |
+ |
return(1); |
469 |
|
} |
470 |
|
|
471 |
|
|
472 |
< |
irrad(org, dir) /* compute immediate irradiance value */ |
473 |
< |
FVECT org, dir; |
472 |
> |
static int |
473 |
> |
is_fifo( /* check if file pointer connected to pipe */ |
474 |
> |
FILE *fp |
475 |
> |
) |
476 |
|
{ |
477 |
< |
register int i; |
477 |
> |
#ifdef S_ISFIFO |
478 |
> |
struct stat sbuf; |
479 |
|
|
480 |
< |
for (i = 0; i < 3; i++) { |
481 |
< |
thisray.rorg[i] = org[i] + dir[i]; |
482 |
< |
thisray.rdir[i] = -dir[i]; |
483 |
< |
} |
484 |
< |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
485 |
< |
/* pretend we hit surface */ |
269 |
< |
thisray.rot = 1.0; |
270 |
< |
thisray.rod = 1.0; |
271 |
< |
VCOPY(thisray.ron, dir); |
272 |
< |
for (i = 0; i < 3; i++) /* fudge factor */ |
273 |
< |
thisray.rop[i] = org[i] + 1e-4*dir[i]; |
274 |
< |
/* compute and print */ |
275 |
< |
(*ofun[Lamb.otype].funp)(&Lamb, &thisray); |
276 |
< |
oputv(&thisray); |
277 |
< |
if (outform == 'a') |
278 |
< |
putchar('\n'); |
480 |
> |
if (fstat(fileno(fp), &sbuf) < 0) |
481 |
> |
error(SYSTEM, "fstat() failed on input stream"); |
482 |
> |
return(S_ISFIFO(sbuf.st_mode)); |
483 |
> |
#else |
484 |
> |
return (fp == stdin); /* just a guess, really */ |
485 |
> |
#endif |
486 |
|
} |
487 |
|
|
488 |
|
|
489 |
< |
getvec(vec, fmt, fp) /* get a vector from fp */ |
490 |
< |
register FVECT vec; |
491 |
< |
int fmt; |
492 |
< |
FILE *fp; |
489 |
> |
static int |
490 |
> |
getvec( /* get a vector from fp */ |
491 |
> |
FVECT vec, |
492 |
> |
int fmt, |
493 |
> |
FILE *fp |
494 |
> |
) |
495 |
|
{ |
287 |
– |
extern char *fgetword(); |
496 |
|
static float vf[3]; |
497 |
|
static double vd[3]; |
498 |
|
char buf[32]; |
499 |
< |
register int i; |
499 |
> |
int i; |
500 |
|
|
501 |
|
switch (fmt) { |
502 |
|
case 'a': /* ascii */ |
508 |
|
} |
509 |
|
break; |
510 |
|
case 'f': /* binary float */ |
511 |
< |
if (fread((char *)vf, sizeof(float), 3, fp) != 3) |
511 |
> |
if (getbinary(vf, sizeof(float), 3, fp) != 3) |
512 |
|
return(-1); |
513 |
< |
vec[0] = vf[0]; vec[1] = vf[1]; vec[2] = vf[2]; |
513 |
> |
VCOPY(vec, vf); |
514 |
|
break; |
515 |
|
case 'd': /* binary double */ |
516 |
< |
if (fread((char *)vd, sizeof(double), 3, fp) != 3) |
516 |
> |
if (getbinary(vd, sizeof(double), 3, fp) != 3) |
517 |
|
return(-1); |
518 |
< |
vec[0] = vd[0]; vec[1] = vd[1]; vec[2] = vd[2]; |
518 |
> |
VCOPY(vec, vd); |
519 |
|
break; |
520 |
|
default: |
521 |
|
error(CONSISTENCY, "botched input format"); |
524 |
|
} |
525 |
|
|
526 |
|
|
527 |
< |
static |
528 |
< |
ourtrace(r) /* print ray values */ |
321 |
< |
RAY *r; |
527 |
> |
static int |
528 |
> |
iszerovec(const FVECT vec) |
529 |
|
{ |
530 |
< |
register int (**tp)(); |
530 |
> |
return (vec[0] == 0.0) & (vec[1] == 0.0) & (vec[2] == 0.0); |
531 |
> |
} |
532 |
|
|
533 |
+ |
|
534 |
+ |
static double |
535 |
+ |
nextray( /* return next ray in work group (-1.0 if EOF) */ |
536 |
+ |
FVECT org, |
537 |
+ |
FVECT dir |
538 |
+ |
) |
539 |
+ |
{ |
540 |
+ |
const size_t qlength = !vresolu * hresolu; |
541 |
+ |
|
542 |
+ |
if ((org == NULL) | (dir == NULL)) { |
543 |
+ |
if (inp_queue != NULL) /* asking to free queue */ |
544 |
+ |
free(inp_queue); |
545 |
+ |
inp_queue = NULL; |
546 |
+ |
inp_qpos = inp_qend = 0; |
547 |
+ |
return(-1.); |
548 |
+ |
} |
549 |
+ |
if (!inp_qend) { /* initialize FIFO queue */ |
550 |
+ |
int rsiz = 6*20; /* conservative ascii ray size */ |
551 |
+ |
if (inform == 'f') rsiz = 6*sizeof(float); |
552 |
+ |
else if (inform == 'd') rsiz = 6*sizeof(double); |
553 |
+ |
/* check against pipe limit */ |
554 |
+ |
if (qlength*rsiz > 512 && is_fifo(inpfp)) |
555 |
+ |
inp_queue = (FVECT *)malloc(sizeof(FVECT)*2*qlength); |
556 |
+ |
inp_qend = -(inp_queue == NULL); /* flag for no queue */ |
557 |
+ |
} |
558 |
+ |
if (inp_qend < 0) { /* not queuing? */ |
559 |
+ |
if (getvec(org, inform, inpfp) < 0 || |
560 |
+ |
getvec(dir, inform, inpfp) < 0) |
561 |
+ |
return(-1.); |
562 |
+ |
return normalize(dir); |
563 |
+ |
} |
564 |
+ |
if (inp_qpos >= inp_qend) { /* need to refill input queue? */ |
565 |
+ |
for (inp_qend = 0; inp_qend < qlength; inp_qend++) { |
566 |
+ |
if (getvec(inp_queue[2*inp_qend], inform, inpfp) < 0 |
567 |
+ |
|| getvec(inp_queue[2*inp_qend+1], |
568 |
+ |
inform, inpfp) < 0) |
569 |
+ |
break; /* hit EOF */ |
570 |
+ |
if (iszerovec(inp_queue[2*inp_qend+1])) { |
571 |
+ |
++inp_qend; /* flush request */ |
572 |
+ |
break; |
573 |
+ |
} |
574 |
+ |
} |
575 |
+ |
inp_qpos = 0; |
576 |
+ |
} |
577 |
+ |
if (inp_qpos >= inp_qend) /* unexpected EOF? */ |
578 |
+ |
return(-1.); |
579 |
+ |
VCOPY(org, inp_queue[2*inp_qpos]); |
580 |
+ |
VCOPY(dir, inp_queue[2*inp_qpos+1]); |
581 |
+ |
++inp_qpos; |
582 |
+ |
return normalize(dir); |
583 |
+ |
} |
584 |
+ |
|
585 |
+ |
|
586 |
+ |
void |
587 |
+ |
tranotify( /* record new modifier */ |
588 |
+ |
OBJECT obj |
589 |
+ |
) |
590 |
+ |
{ |
591 |
+ |
static int hitlimit = 0; |
592 |
+ |
OBJREC *o = objptr(obj); |
593 |
+ |
char **tralp; |
594 |
+ |
|
595 |
+ |
if (obj == OVOID) { /* starting over */ |
596 |
+ |
traset[0] = 0; |
597 |
+ |
hitlimit = 0; |
598 |
+ |
return; |
599 |
+ |
} |
600 |
+ |
if (hitlimit || !ismodifier(o->otype)) |
601 |
+ |
return; |
602 |
+ |
for (tralp = tralist; *tralp != NULL; tralp++) |
603 |
+ |
if (!strcmp(o->oname, *tralp)) { |
604 |
+ |
if (traset[0] >= MAXTSET) { |
605 |
+ |
error(WARNING, "too many modifiers in trace list"); |
606 |
+ |
hitlimit++; |
607 |
+ |
return; /* should this be fatal? */ |
608 |
+ |
} |
609 |
+ |
insertelem(traset, obj); |
610 |
+ |
return; |
611 |
+ |
} |
612 |
+ |
} |
613 |
+ |
|
614 |
+ |
|
615 |
+ |
static void |
616 |
+ |
ourtrace( /* print ray values */ |
617 |
+ |
RAY *r |
618 |
+ |
) |
619 |
+ |
{ |
620 |
+ |
oputf_t **tp; |
621 |
+ |
|
622 |
|
if (every_out[0] == NULL) |
623 |
|
return; |
624 |
+ |
if (r->ro == NULL) { |
625 |
+ |
if (traincl == 1) |
626 |
+ |
return; |
627 |
+ |
} else if (traincl != -1 && traincl != inset(traset, r->ro->omod)) |
628 |
+ |
return; |
629 |
|
tabin(r); |
630 |
|
for (tp = every_out; *tp != NULL; tp++) |
631 |
|
(**tp)(r); |
632 |
< |
putchar('\n'); |
632 |
> |
if (outform == 'a') |
633 |
> |
putchar('\n'); |
634 |
|
} |
635 |
|
|
636 |
|
|
637 |
< |
static |
638 |
< |
tabin(r) /* tab in appropriate amount */ |
639 |
< |
RAY *r; |
637 |
> |
static void |
638 |
> |
tabin( /* tab in appropriate amount */ |
639 |
> |
RAY *r |
640 |
> |
) |
641 |
|
{ |
642 |
< |
register RAY *rp; |
642 |
> |
const RAY *rp; |
643 |
|
|
644 |
|
for (rp = r->parent; rp != NULL; rp = rp->parent) |
645 |
|
putchar('\t'); |
646 |
|
} |
647 |
|
|
648 |
|
|
649 |
< |
static |
650 |
< |
oputo(r) /* print origin */ |
651 |
< |
register RAY *r; |
649 |
> |
static void |
650 |
> |
oputo( /* print origin */ |
651 |
> |
RAY *r |
652 |
> |
) |
653 |
|
{ |
654 |
< |
(*putreal)(r->rorg[0]); |
350 |
< |
(*putreal)(r->rorg[1]); |
351 |
< |
(*putreal)(r->rorg[2]); |
654 |
> |
(*putreal)(r->rorg, 3); |
655 |
|
} |
656 |
|
|
657 |
|
|
658 |
< |
static |
659 |
< |
oputd(r) /* print direction */ |
660 |
< |
register RAY *r; |
658 |
> |
static void |
659 |
> |
oputd( /* print direction */ |
660 |
> |
RAY *r |
661 |
> |
) |
662 |
|
{ |
663 |
< |
(*putreal)(r->rdir[0]); |
360 |
< |
(*putreal)(r->rdir[1]); |
361 |
< |
(*putreal)(r->rdir[2]); |
663 |
> |
(*putreal)(r->rdir, 3); |
664 |
|
} |
665 |
|
|
666 |
|
|
667 |
< |
static |
668 |
< |
oputv(r) /* print value */ |
669 |
< |
register RAY *r; |
667 |
> |
static void |
668 |
> |
oputr( /* print mirrored contribution */ |
669 |
> |
RAY *r |
670 |
> |
) |
671 |
|
{ |
672 |
< |
COLR cout; |
673 |
< |
|
674 |
< |
if (outform == 'c') { |
675 |
< |
setcolr(cout, colval(r->rcol,RED), |
676 |
< |
colval(r->rcol,GRN), |
677 |
< |
colval(r->rcol,BLU)); |
375 |
< |
fwrite((char *)cout, sizeof(cout), 1, stdout); |
376 |
< |
return; |
377 |
< |
} |
378 |
< |
(*putreal)(colval(r->rcol,RED)); |
379 |
< |
(*putreal)(colval(r->rcol,GRN)); |
380 |
< |
(*putreal)(colval(r->rcol,BLU)); |
672 |
> |
RREAL cval[3]; |
673 |
> |
|
674 |
> |
cval[0] = colval(r->mcol,RED); |
675 |
> |
cval[1] = colval(r->mcol,GRN); |
676 |
> |
cval[2] = colval(r->mcol,BLU); |
677 |
> |
(*putreal)(cval, 3); |
678 |
|
} |
679 |
|
|
680 |
|
|
681 |
< |
static |
682 |
< |
oputl(r) /* print effective distance */ |
683 |
< |
register RAY *r; |
681 |
> |
|
682 |
> |
static void |
683 |
> |
oputR( /* print mirrored distance */ |
684 |
> |
RAY *r |
685 |
> |
) |
686 |
|
{ |
687 |
< |
(*putreal)(r->rt); |
687 |
> |
(*putreal)(&r->rmt, 1); |
688 |
|
} |
689 |
|
|
690 |
|
|
691 |
< |
static |
692 |
< |
oputL(r) /* print single ray length */ |
693 |
< |
register RAY *r; |
691 |
> |
static void |
692 |
> |
oputx( /* print unmirrored contribution */ |
693 |
> |
RAY *r |
694 |
> |
) |
695 |
|
{ |
696 |
< |
(*putreal)(r->rot); |
696 |
> |
RREAL cval[3]; |
697 |
> |
|
698 |
> |
cval[0] = colval(r->rcol,RED) - colval(r->mcol,RED); |
699 |
> |
cval[1] = colval(r->rcol,GRN) - colval(r->mcol,GRN); |
700 |
> |
cval[2] = colval(r->rcol,BLU) - colval(r->mcol,BLU); |
701 |
> |
(*putreal)(cval, 3); |
702 |
|
} |
703 |
|
|
704 |
|
|
705 |
< |
static |
706 |
< |
oputp(r) /* print point */ |
707 |
< |
register RAY *r; |
705 |
> |
static void |
706 |
> |
oputX( /* print unmirrored distance */ |
707 |
> |
RAY *r |
708 |
> |
) |
709 |
|
{ |
710 |
< |
if (r->rot < FHUGE) { |
405 |
< |
(*putreal)(r->rop[0]); |
406 |
< |
(*putreal)(r->rop[1]); |
407 |
< |
(*putreal)(r->rop[2]); |
408 |
< |
} else { |
409 |
< |
(*putreal)(0.0); |
410 |
< |
(*putreal)(0.0); |
411 |
< |
(*putreal)(0.0); |
412 |
< |
} |
710 |
> |
(*putreal)(&r->rxt, 1); |
711 |
|
} |
712 |
|
|
713 |
|
|
714 |
< |
static |
715 |
< |
oputN(r) /* print unperturbed normal */ |
716 |
< |
register RAY *r; |
714 |
> |
static void |
715 |
> |
oputv( /* print value */ |
716 |
> |
RAY *r |
717 |
> |
) |
718 |
|
{ |
719 |
< |
if (r->rot < FHUGE) { |
720 |
< |
(*putreal)(r->ron[0]); |
721 |
< |
(*putreal)(r->ron[1]); |
722 |
< |
(*putreal)(r->ron[2]); |
723 |
< |
} else { |
724 |
< |
(*putreal)(0.0); |
725 |
< |
(*putreal)(0.0); |
726 |
< |
(*putreal)(0.0); |
719 |
> |
RREAL cval[3]; |
720 |
> |
|
721 |
> |
cval[0] = colval(r->rcol,RED); |
722 |
> |
cval[1] = colval(r->rcol,GRN); |
723 |
> |
cval[2] = colval(r->rcol,BLU); |
724 |
> |
(*putreal)(cval, 3); |
725 |
> |
} |
726 |
> |
|
727 |
> |
|
728 |
> |
static void |
729 |
> |
oputV( /* print value contribution */ |
730 |
> |
RAY *r |
731 |
> |
) |
732 |
> |
{ |
733 |
> |
RREAL contr[3]; |
734 |
> |
|
735 |
> |
raycontrib(contr, r, PRIMARY); |
736 |
> |
multcolor(contr, r->rcol); |
737 |
> |
(*putreal)(contr, 3); |
738 |
> |
} |
739 |
> |
|
740 |
> |
|
741 |
> |
static void |
742 |
> |
oputl( /* print effective distance */ |
743 |
> |
RAY *r |
744 |
> |
) |
745 |
> |
{ |
746 |
> |
RREAL d = raydistance(r); |
747 |
> |
|
748 |
> |
(*putreal)(&d, 1); |
749 |
> |
} |
750 |
> |
|
751 |
> |
|
752 |
> |
static void |
753 |
> |
oputL( /* print single ray length */ |
754 |
> |
RAY *r |
755 |
> |
) |
756 |
> |
{ |
757 |
> |
(*putreal)(&r->rot, 1); |
758 |
> |
} |
759 |
> |
|
760 |
> |
|
761 |
> |
static void |
762 |
> |
oputc( /* print local coordinates */ |
763 |
> |
RAY *r |
764 |
> |
) |
765 |
> |
{ |
766 |
> |
(*putreal)(r->uv, 2); |
767 |
> |
} |
768 |
> |
|
769 |
> |
|
770 |
> |
static RREAL vdummy[3] = {0.0, 0.0, 0.0}; |
771 |
> |
|
772 |
> |
|
773 |
> |
static void |
774 |
> |
oputp( /* print intersection point */ |
775 |
> |
RAY *r |
776 |
> |
) |
777 |
> |
{ |
778 |
> |
(*putreal)(r->rop, 3); /* set to ray origin if distant or no hit */ |
779 |
> |
} |
780 |
> |
|
781 |
> |
|
782 |
> |
static void |
783 |
> |
oputN( /* print unperturbed normal */ |
784 |
> |
RAY *r |
785 |
> |
) |
786 |
> |
{ |
787 |
> |
if (r->ro == NULL) { /* zero vector if clipped or no hit */ |
788 |
> |
(*putreal)(vdummy, 3); |
789 |
> |
return; |
790 |
|
} |
791 |
+ |
if (r->rflips & 1) { /* undo any flippin' flips */ |
792 |
+ |
FVECT unrm; |
793 |
+ |
unrm[0] = -r->ron[0]; |
794 |
+ |
unrm[1] = -r->ron[1]; |
795 |
+ |
unrm[2] = -r->ron[2]; |
796 |
+ |
(*putreal)(unrm, 3); |
797 |
+ |
} else |
798 |
+ |
(*putreal)(r->ron, 3); |
799 |
|
} |
800 |
|
|
801 |
|
|
802 |
< |
static |
803 |
< |
oputn(r) /* print perturbed normal */ |
804 |
< |
RAY *r; |
802 |
> |
static void |
803 |
> |
oputn( /* print perturbed normal */ |
804 |
> |
RAY *r |
805 |
> |
) |
806 |
|
{ |
807 |
|
FVECT pnorm; |
808 |
|
|
809 |
< |
if (r->rot >= FHUGE) { |
810 |
< |
(*putreal)(0.0); |
440 |
< |
(*putreal)(0.0); |
441 |
< |
(*putreal)(0.0); |
809 |
> |
if (r->ro == NULL) { /* clipped or no hit */ |
810 |
> |
(*putreal)(vdummy, 3); |
811 |
|
return; |
812 |
|
} |
813 |
|
raynormal(pnorm, r); |
814 |
< |
(*putreal)(pnorm[0]); |
446 |
< |
(*putreal)(pnorm[1]); |
447 |
< |
(*putreal)(pnorm[2]); |
814 |
> |
(*putreal)(pnorm, 3); |
815 |
|
} |
816 |
|
|
817 |
|
|
818 |
< |
static |
819 |
< |
oputs(r) /* print name */ |
820 |
< |
register RAY *r; |
818 |
> |
static void |
819 |
> |
oputs( /* print name */ |
820 |
> |
RAY *r |
821 |
> |
) |
822 |
|
{ |
823 |
|
if (r->ro != NULL) |
824 |
|
fputs(r->ro->oname, stdout); |
828 |
|
} |
829 |
|
|
830 |
|
|
831 |
< |
static |
832 |
< |
oputw(r) /* print weight */ |
833 |
< |
register RAY *r; |
831 |
> |
static void |
832 |
> |
oputw( /* print weight */ |
833 |
> |
RAY *r |
834 |
> |
) |
835 |
|
{ |
836 |
< |
(*putreal)(r->rweight); |
836 |
> |
RREAL rwt = r->rweight; |
837 |
> |
|
838 |
> |
(*putreal)(&rwt, 1); |
839 |
|
} |
840 |
|
|
841 |
|
|
842 |
< |
static |
843 |
< |
oputm(r) /* print modifier */ |
844 |
< |
register RAY *r; |
842 |
> |
static void |
843 |
> |
oputW( /* print coefficient */ |
844 |
> |
RAY *r |
845 |
> |
) |
846 |
|
{ |
847 |
+ |
RREAL contr[3]; |
848 |
+ |
/* shadow ray not on source? */ |
849 |
+ |
if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
850 |
+ |
setcolor(contr, 0.0, 0.0, 0.0); |
851 |
+ |
else |
852 |
+ |
raycontrib(contr, r, PRIMARY); |
853 |
+ |
|
854 |
+ |
(*putreal)(contr, 3); |
855 |
+ |
} |
856 |
+ |
|
857 |
+ |
|
858 |
+ |
static void |
859 |
+ |
oputm( /* print modifier */ |
860 |
+ |
RAY *r |
861 |
+ |
) |
862 |
+ |
{ |
863 |
|
if (r->ro != NULL) |
864 |
< |
fputs(objptr(r->ro->omod)->oname, stdout); |
864 |
> |
if (r->ro->omod != OVOID) |
865 |
> |
fputs(objptr(r->ro->omod)->oname, stdout); |
866 |
> |
else |
867 |
> |
fputs(VOIDID, stdout); |
868 |
|
else |
869 |
|
putchar('*'); |
870 |
|
putchar('\t'); |
871 |
|
} |
872 |
|
|
873 |
|
|
874 |
< |
static |
875 |
< |
puta(v) /* print ascii value */ |
876 |
< |
double v; |
874 |
> |
static void |
875 |
> |
oputM( /* print material */ |
876 |
> |
RAY *r |
877 |
> |
) |
878 |
|
{ |
879 |
< |
printf("%e\t", v); |
879 |
> |
OBJREC *mat; |
880 |
> |
|
881 |
> |
if (r->ro != NULL) { |
882 |
> |
if ((mat = findmaterial(r->ro)) != NULL) |
883 |
> |
fputs(mat->oname, stdout); |
884 |
> |
else |
885 |
> |
fputs(VOIDID, stdout); |
886 |
> |
} else |
887 |
> |
putchar('*'); |
888 |
> |
putchar('\t'); |
889 |
|
} |
890 |
|
|
891 |
|
|
892 |
< |
static |
893 |
< |
putd(v) /* print binary double */ |
894 |
< |
double v; |
892 |
> |
static void |
893 |
> |
oputtilde( /* output tilde (spacer) */ |
894 |
> |
RAY *r |
895 |
> |
) |
896 |
|
{ |
897 |
< |
fwrite((char *)&v, sizeof(v), 1, stdout); |
897 |
> |
fputs("~\t", stdout); |
898 |
|
} |
899 |
|
|
900 |
|
|
901 |
< |
static |
902 |
< |
putf(v) /* print binary float */ |
903 |
< |
double v; |
901 |
> |
static void |
902 |
> |
puta( /* print ascii value(s) */ |
903 |
> |
RREAL *v, int n |
904 |
> |
) |
905 |
|
{ |
906 |
< |
float f = v; |
906 |
> |
if (n == 3) { |
907 |
> |
printf("%e\t%e\t%e\t", v[0], v[1], v[2]); |
908 |
> |
return; |
909 |
> |
} |
910 |
> |
while (n--) |
911 |
> |
printf("%e\t", *v++); |
912 |
> |
} |
913 |
|
|
914 |
< |
fwrite((char *)&f, sizeof(f), 1, stdout); |
914 |
> |
|
915 |
> |
static void |
916 |
> |
putd(RREAL *v, int n) /* output binary double(s) */ |
917 |
> |
{ |
918 |
> |
#ifdef SMLFLT |
919 |
> |
double da[3]; |
920 |
> |
int i; |
921 |
> |
|
922 |
> |
if (n > 3) |
923 |
> |
error(INTERNAL, "code error in putd()"); |
924 |
> |
for (i = n; i--; ) |
925 |
> |
da[i] = v[i]; |
926 |
> |
putbinary(da, sizeof(double), n, stdout); |
927 |
> |
#else |
928 |
> |
putbinary(v, sizeof(RREAL), n, stdout); |
929 |
> |
#endif |
930 |
> |
} |
931 |
> |
|
932 |
> |
|
933 |
> |
static void |
934 |
> |
putf(RREAL *v, int n) /* output binary float(s) */ |
935 |
> |
{ |
936 |
> |
#ifndef SMLFLT |
937 |
> |
float fa[3]; |
938 |
> |
int i; |
939 |
> |
|
940 |
> |
if (n > 3) |
941 |
> |
error(INTERNAL, "code error in putf()"); |
942 |
> |
for (i = n; i--; ) |
943 |
> |
fa[i] = v[i]; |
944 |
> |
putbinary(fa, sizeof(float), n, stdout); |
945 |
> |
#else |
946 |
> |
putbinary(v, sizeof(RREAL), n, stdout); |
947 |
> |
#endif |
948 |
> |
} |
949 |
> |
|
950 |
> |
|
951 |
> |
static void |
952 |
> |
putrgbe(RREAL *v, int n) /* output RGBE color */ |
953 |
> |
{ |
954 |
> |
COLR cout; |
955 |
> |
|
956 |
> |
if (n != 3) |
957 |
> |
error(INTERNAL, "putrgbe() not called with 3 components"); |
958 |
> |
setcolr(cout, v[0], v[1], v[2]); |
959 |
> |
putbinary(cout, sizeof(cout), 1, stdout); |
960 |
|
} |