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/* Copyright (c) 1995 Regents of the University of California */ |
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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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#include "platform.h" |
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#include "ray.h" |
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#include "otypes.h" |
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#include "resolu.h" |
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CUBE thescene; /* our scene */ |
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OBJECT nsceneobjs; /* number of objects in our scene */ |
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|
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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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|
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int imm_irrad = 0; /* compute immediate irradiance? */ |
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int lim_dist = 0; /* 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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int do_irrad = 0; /* compute irradiance? */ |
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|
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void (*trace)() = NULL; /* trace call */ |
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|
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extern void ambnotify(), tranotify(); |
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void (*addobjnotify[])() = {ambnotify, tranotify, NULL}; |
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char *tralist[128]; /* list of modifers to trace (or no) */ |
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int traincl = -1; /* include == 1, exclude == 0 */ |
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#define MAXTSET 511 /* maximum number in trace set */ |
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int vresolu = 0; /* 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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double shadthresh = .03; /* shadow threshold */ |
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double shadcert = .75; /* shadow certainty */ |
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int directrelay = 2; /* 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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int backvis = 1; /* back face visibility */ |
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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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int maxdepth = 8; /* maximum recursion depth */ |
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double minweight = 2e-3; /* minimum ray weight */ |
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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 = 0.2; /* ambient accuracy */ |
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int ambres = 128; /* ambient resolution */ |
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int ambdiv = 512; /* ambient divisions */ |
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int ambssamp = 0; /* ambient super-samples */ |
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double ambacc = 0.15; /* ambient accuracy */ |
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int ambres = 256; /* ambient resolution */ |
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int ambdiv = 1024; /* ambient divisions */ |
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int ambssamp = 512; /* 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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extern OBJREC Lamb; /* a Lambertian surface */ |
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static RAY thisray; /* for our convenience */ |
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static int oputo(), oputd(), oputv(), oputl(), oputL(), |
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static void oputo(), oputd(), oputv(), oputl(), oputL(), oputc(), |
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oputp(), oputn(), oputN(), oputs(), oputw(), oputm(); |
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static int ourtrace(), tabin(); |
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static int (*ray_out[16])(), (*every_out[16])(); |
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static void ourtrace(), tabin(); |
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static void (*ray_out[16])(), (*every_out[16])(); |
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static int castonly = 0; |
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static int puta(), putf(), putd(); |
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static void puta(), putf(), putd(); |
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static int (*putreal)(); |
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static void (*putreal)(); |
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void bogusray(), rad(), irrad(), printvals(); |
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|
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void |
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quit(code) /* quit program */ |
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int code; |
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{ |
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#ifndef NIX |
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#ifndef NON_POSIX /* XXX we don't clean up elsewhere? */ |
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headclean(); /* delete header file */ |
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pfclean(); /* clean up persist files */ |
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#endif |
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} |
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void |
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rtrace(fname) /* trace rays from file */ |
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char *fname; |
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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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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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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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#ifdef _WIN32 |
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if (inform != 'a') |
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setmode(fileno(fp), O_BINARY); |
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SET_FILE_BINARY(fp); |
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#endif |
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/* set up output */ |
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setoutput(outvals); |
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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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d = normalize(direc); |
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if (d == 0.0) { /* zero ==> flush */ |
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bogusray(); |
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if (--nextflush <= 0 || vcount <= 0) { |
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fflush(stdout); |
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nextflush = hresolu; |
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} |
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} else { |
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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 |
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rad(orig, direc); |
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if (imm_irrad) |
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irrad(orig, direc); |
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else |
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rad(orig, direc, lim_dist ? d : 0.0); |
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/* flush if time */ |
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if (--nextflush == 0) { |
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fflush(stdout); |
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nextflush = hresolu; |
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> |
if (--nextflush == 0) { |
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fflush(stdout); |
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nextflush = hresolu; |
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} |
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} |
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if (ferror(stdout)) |
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error(SYSTEM, "write error"); |
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setoutput(vs) /* set up output tables */ |
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register char *vs; |
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{ |
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extern int (*trace)(); |
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register int (**table)() = ray_out; |
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extern void (*trace)(); |
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register void (**table)() = ray_out; |
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|
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castonly = 1; |
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while (*vs) |
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*table++ = oputl; |
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castonly = 0; |
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break; |
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case 'c': /* local coordinates */ |
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*table++ = oputc; |
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break; |
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case 'L': /* single ray length */ |
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*table++ = oputL; |
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break; |
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} |
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rad(org, dir) /* compute and print ray value(s) */ |
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void |
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bogusray() /* print out empty record */ |
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{ |
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thisray.rorg[0] = thisray.rorg[1] = thisray.rorg[2] = |
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thisray.rdir[0] = thisray.rdir[1] = thisray.rdir[2] = 0.0; |
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rayorigin(&thisray, NULL, PRIMARY, 1.0); |
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printvals(&thisray); |
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} |
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|
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|
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void |
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rad(org, dir, dmax) /* compute and print ray value(s) */ |
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FVECT org, dir; |
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double dmax; |
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{ |
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VCOPY(thisray.rorg, org); |
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VCOPY(thisray.rdir, dir); |
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thisray.rmax = 0.0; |
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thisray.rmax = dmax; |
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rayorigin(&thisray, NULL, PRIMARY, 1.0); |
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if (castonly) |
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localhit(&thisray, &thescene) || sourcehit(&thisray); |
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else |
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if (castonly) { |
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if (!localhit(&thisray, &thescene)) { |
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if (thisray.ro == &Aftplane) { /* clipped */ |
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thisray.ro = NULL; |
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thisray.rot = FHUGE; |
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} else |
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sourcehit(&thisray); |
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} |
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} else |
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rayvalue(&thisray); |
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printvals(&thisray); |
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} |
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|
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void |
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irrad(org, dir) /* compute immediate irradiance value */ |
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FVECT org, dir; |
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{ |
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} |
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void |
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printvals(r) /* print requested ray values */ |
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RAY *r; |
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{ |
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< |
register int (**tp)(); |
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> |
register void (**tp)(); |
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|
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if (ray_out[0] == NULL) |
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return; |
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} |
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|
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|
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int |
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getvec(vec, fmt, fp) /* get a vector from fp */ |
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register FVECT vec; |
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int fmt; |
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FILE *fp; |
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{ |
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extern char *fgetword(); |
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static float vf[3]; |
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static double vd[3]; |
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char buf[32]; |
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} |
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|
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|
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+ |
void |
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tranotify(obj) /* record new modifier */ |
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OBJECT obj; |
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{ |
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register OBJREC *o = objptr(obj); |
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register char **tralp; |
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|
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+ |
if (obj == OVOID) { /* starting over */ |
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+ |
traset[0] = 0; |
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+ |
hitlimit = 0; |
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+ |
return; |
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+ |
} |
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if (hitlimit || !ismodifier(o->otype)) |
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return; |
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for (tralp = tralist; *tralp != NULL; tralp++) |
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} |
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|
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|
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< |
static |
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> |
static void |
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ourtrace(r) /* print ray values */ |
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RAY *r; |
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{ |
| 408 |
< |
register int (**tp)(); |
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> |
register void (**tp)(); |
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|
| 410 |
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if (every_out[0] == NULL) |
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return; |
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} |
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|
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|
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< |
static |
| 424 |
> |
static void |
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tabin(r) /* tab in appropriate amount */ |
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RAY *r; |
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{ |
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} |
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|
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|
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< |
static |
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> |
static void |
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oputo(r) /* print origin */ |
| 437 |
< |
register RAY *r; |
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> |
RAY *r; |
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{ |
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(*putreal)(r->rorg[0]); |
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(*putreal)(r->rorg[1]); |
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} |
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|
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|
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< |
static |
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> |
static void |
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oputd(r) /* print direction */ |
| 447 |
< |
register RAY *r; |
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> |
RAY *r; |
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{ |
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(*putreal)(r->rdir[0]); |
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(*putreal)(r->rdir[1]); |
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} |
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|
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|
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< |
static |
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> |
static void |
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oputv(r) /* print value */ |
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< |
register RAY *r; |
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> |
RAY *r; |
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{ |
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COLR cout; |
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|
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} |
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|
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|
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< |
static |
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> |
static void |
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oputl(r) /* print effective distance */ |
| 476 |
< |
register RAY *r; |
| 476 |
> |
RAY *r; |
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{ |
| 478 |
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(*putreal)(r->rt); |
| 479 |
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} |
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|
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|
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< |
static |
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> |
static void |
| 483 |
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oputL(r) /* print single ray length */ |
| 484 |
< |
register RAY *r; |
| 484 |
> |
RAY *r; |
| 485 |
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{ |
| 486 |
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(*putreal)(r->rot); |
| 487 |
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} |
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|
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|
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< |
static |
| 490 |
> |
static void |
| 491 |
> |
oputc(r) /* print local coordinates */ |
| 492 |
> |
RAY *r; |
| 493 |
> |
{ |
| 494 |
> |
(*putreal)(r->uv[0]); |
| 495 |
> |
(*putreal)(r->uv[1]); |
| 496 |
> |
} |
| 497 |
> |
|
| 498 |
> |
|
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> |
static void |
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oputp(r) /* print point */ |
| 501 |
< |
register RAY *r; |
| 501 |
> |
RAY *r; |
| 502 |
|
{ |
| 503 |
|
if (r->rot < FHUGE) { |
| 504 |
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(*putreal)(r->rop[0]); |
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} |
| 513 |
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|
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|
| 515 |
< |
static |
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> |
static void |
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|
oputN(r) /* print unperturbed normal */ |
| 517 |
< |
register RAY *r; |
| 517 |
> |
RAY *r; |
| 518 |
|
{ |
| 519 |
|
if (r->rot < FHUGE) { |
| 520 |
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(*putreal)(r->ron[0]); |
| 528 |
|
} |
| 529 |
|
|
| 530 |
|
|
| 531 |
< |
static |
| 531 |
> |
static void |
| 532 |
|
oputn(r) /* print perturbed normal */ |
| 533 |
|
RAY *r; |
| 534 |
|
{ |
| 547 |
|
} |
| 548 |
|
|
| 549 |
|
|
| 550 |
< |
static |
| 550 |
> |
static void |
| 551 |
|
oputs(r) /* print name */ |
| 552 |
< |
register RAY *r; |
| 552 |
> |
RAY *r; |
| 553 |
|
{ |
| 554 |
|
if (r->ro != NULL) |
| 555 |
|
fputs(r->ro->oname, stdout); |
| 559 |
|
} |
| 560 |
|
|
| 561 |
|
|
| 562 |
< |
static |
| 562 |
> |
static void |
| 563 |
|
oputw(r) /* print weight */ |
| 564 |
< |
register RAY *r; |
| 564 |
> |
RAY *r; |
| 565 |
|
{ |
| 566 |
|
(*putreal)(r->rweight); |
| 567 |
|
} |
| 568 |
|
|
| 569 |
|
|
| 570 |
< |
static |
| 570 |
> |
static void |
| 571 |
|
oputm(r) /* print modifier */ |
| 572 |
< |
register RAY *r; |
| 572 |
> |
RAY *r; |
| 573 |
|
{ |
| 574 |
|
if (r->ro != NULL) |
| 575 |
< |
fputs(objptr(r->ro->omod)->oname, stdout); |
| 575 |
> |
if (r->ro->omod != OVOID) |
| 576 |
> |
fputs(objptr(r->ro->omod)->oname, stdout); |
| 577 |
> |
else |
| 578 |
> |
fputs(VOIDID, stdout); |
| 579 |
|
else |
| 580 |
|
putchar('*'); |
| 581 |
|
putchar('\t'); |
| 582 |
|
} |
| 583 |
|
|
| 584 |
|
|
| 585 |
< |
static |
| 585 |
> |
static void |
| 586 |
|
puta(v) /* print ascii value */ |
| 587 |
|
double v; |
| 588 |
|
{ |
| 590 |
|
} |
| 591 |
|
|
| 592 |
|
|
| 593 |
< |
static |
| 593 |
> |
static void |
| 594 |
|
putd(v) /* print binary double */ |
| 595 |
|
double v; |
| 596 |
|
{ |
| 598 |
|
} |
| 599 |
|
|
| 600 |
|
|
| 601 |
< |
static |
| 601 |
> |
static void |
| 602 |
|
putf(v) /* print binary float */ |
| 603 |
|
double v; |
| 604 |
|
{ |