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/* Copyright (c) 1986 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 <time.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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#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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#include "octree.h" |
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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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#include "otypes.h" |
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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 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 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 imm_irrad = 0; /* compute immediate irradiance? */ |
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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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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 int castonly; /* only doing ray-casting? */ |
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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 double (*sens_curve)(SCOLOR scol); /* spectral conversion for 1-channel */ |
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extern double out_scalefactor; /* output calibration scale factor */ |
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extern RGBPRIMP out_prims; /* output color primitives (NULL if spectral) */ |
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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 directinvis = 0; /* sources invisible? */ |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
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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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double specthresh = .15; /* specular sampling threshold */ |
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double specjitter = 1.; /* specular sampling jitter */ |
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static int Tflag = 0; /* source tracing enabled? */ |
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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 RAY thisray; /* for our convenience */ |
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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 FILE *inpfp = NULL; /* input stream pointer */ |
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|
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extern OBJREC Lamb; /* a Lambertian surface */ |
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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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|
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static RAY thisray; /* for our convenience */ |
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typedef void putf_t(RREAL *v, int n); |
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static putf_t puta, putd, putf; |
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|
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static int oputo(), oputd(), oputv(), oputl(), |
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oputp(), oputn(), oputs(), oputw(), oputm(); |
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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 (*ray_out[10])(), (*every_out[10])(); |
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static int castonly; |
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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 puta(), putf(), putd(); |
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static void putscolor(COLORV *scol); |
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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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|
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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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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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|
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rtrace(fname) /* trace rays from file */ |
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char *fname; |
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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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long vcount = hresolu>1 ? hresolu*vresolu : vresolu; |
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long nextflush = hresolu; |
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switch (f) { |
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case 'a': return("ascii"); |
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case 'f': return("float"); |
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case 'd': return("double"); |
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case 'c': |
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if (out_prims == NULL) |
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return(SPECFMT); |
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if (out_prims == xyzprims) |
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return(CIEFMT); |
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return(COLRFMT); |
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} |
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return("unknown"); |
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} |
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|
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|
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static void |
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trace_sources(void) /* trace rays to light sources, also */ |
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{ |
138 |
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int sn; |
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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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) |
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{ |
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unsigned long vcount = (hresolu > 1) ? (unsigned long)hresolu*vresolu |
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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 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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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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/* 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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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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else |
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traceray(orig, direc); |
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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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} |
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/* process input rays */ |
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while ((d = nextray(orig, direc)) >= 0.0) { |
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if (d == 0.0) { /* flush request? */ |
196 |
> |
if (something2flush) { |
197 |
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if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
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error(USER, "child(ren) died"); |
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bogusray(); |
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fflush(stdout); |
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> |
nextflush = (!vresolu | (hresolu <= 1)) * hresolu; |
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something2flush = 0; |
203 |
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} else |
204 |
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bogusray(); |
205 |
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} else { /* compute and print */ |
206 |
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rtcompute(orig, direc, lim_dist ? d : 0.0); |
207 |
> |
if (!--nextflush) { /* flush if time */ |
208 |
> |
if (ray_pnprocs > 1 && ray_fifo_flush() < 0) |
209 |
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error(USER, "child(ren) died"); |
210 |
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fflush(stdout); |
211 |
> |
nextflush = hresolu; |
212 |
> |
} else |
213 |
> |
something2flush = 1; |
214 |
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} |
215 |
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if (ferror(stdout)) |
216 |
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error(SYSTEM, "write error"); |
217 |
< |
if (--vcount == 0) /* check for end */ |
217 |
> |
if (vcount && !--vcount) /* check for end */ |
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break; |
219 |
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} |
220 |
< |
if (vcount > 0) |
221 |
< |
error(USER, "read error"); |
222 |
< |
fclose(fp); |
220 |
> |
if (ray_pnprocs > 1) { /* clean up children */ |
221 |
> |
if (ray_fifo_flush() < 0) |
222 |
> |
error(USER, "unable to complete processing"); |
223 |
> |
ray_pclose(0); |
224 |
> |
} |
225 |
> |
if (vcount) |
226 |
> |
error(WARNING, "unexpected EOF on input"); |
227 |
> |
if (fflush(stdout) < 0) |
228 |
> |
error(SYSTEM, "write error"); |
229 |
> |
if (fname != NULL) { |
230 |
> |
fclose(inpfp); |
231 |
> |
inpfp = NULL; |
232 |
> |
} |
233 |
> |
nextray(NULL, NULL); |
234 |
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} |
235 |
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|
236 |
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|
237 |
< |
setoutput(vs) /* set up output tables */ |
238 |
< |
register char *vs; |
237 |
> |
int |
238 |
> |
setrtoutput(void) /* set up output tables, return #comp */ |
239 |
|
{ |
240 |
< |
extern int ourtrace(), (*trace)(); |
241 |
< |
register int (**table)() = ray_out; |
240 |
> |
char *vs = outvals; |
241 |
> |
oputf_t **table = ray_out; |
242 |
> |
const int nco = (sens_curve != NULL) ? 1 : |
243 |
> |
(out_prims != NULL) ? 3 : NCSAMP; |
244 |
> |
int ncomp = 0; |
245 |
|
|
246 |
< |
castonly = 1; |
247 |
< |
while (*vs) |
248 |
< |
switch (*vs++) { |
246 |
> |
if (!*vs) |
247 |
> |
error(USER, "empty output specification"); |
248 |
> |
|
249 |
> |
switch (outform) { /* make sure (*putreal)() calls someone! */ |
250 |
> |
case 'a': putreal = puta; break; |
251 |
> |
case 'f': putreal = putf; break; |
252 |
> |
case 'd': putreal = putd; break; |
253 |
> |
case 'c': |
254 |
> |
if (outvals[1] || !strchr("vrx", outvals[0])) |
255 |
> |
error(USER, "color format only with -ov, -or, -ox"); |
256 |
> |
if (nco < 3) |
257 |
> |
error(USER, "color format incompatible with -pY, -pS, -pM"); |
258 |
> |
break; |
259 |
> |
default: |
260 |
> |
error(CONSISTENCY, "botched output format"); |
261 |
> |
} |
262 |
> |
castonly = 1; /* sets castonly as side-effect */ |
263 |
> |
do |
264 |
> |
switch (*vs) { |
265 |
> |
case 'T': /* trace sources */ |
266 |
> |
Tflag++; |
267 |
> |
/* fall through */ |
268 |
|
case 't': /* trace */ |
269 |
+ |
if (!vs[1]) break; |
270 |
|
*table = NULL; |
271 |
|
table = every_out; |
154 |
– |
trace = ourtrace; |
272 |
|
castonly = 0; |
273 |
|
break; |
274 |
|
case 'o': /* origin */ |
275 |
|
*table++ = oputo; |
276 |
+ |
ncomp += 3; |
277 |
|
break; |
278 |
|
case 'd': /* direction */ |
279 |
|
*table++ = oputd; |
280 |
+ |
ncomp += 3; |
281 |
|
break; |
282 |
+ |
case 'r': /* reflected contrib. */ |
283 |
+ |
*table++ = oputr; |
284 |
+ |
ncomp += nco; |
285 |
+ |
castonly = 0; |
286 |
+ |
break; |
287 |
+ |
case 'R': /* reflected distance */ |
288 |
+ |
*table++ = oputR; |
289 |
+ |
ncomp++; |
290 |
+ |
castonly = 0; |
291 |
+ |
break; |
292 |
+ |
case 'x': /* xmit contrib. */ |
293 |
+ |
*table++ = oputx; |
294 |
+ |
ncomp += nco; |
295 |
+ |
castonly = 0; |
296 |
+ |
break; |
297 |
+ |
case 'X': /* xmit distance */ |
298 |
+ |
*table++ = oputX; |
299 |
+ |
ncomp++; |
300 |
+ |
castonly = 0; |
301 |
+ |
break; |
302 |
|
case 'v': /* value */ |
303 |
|
*table++ = oputv; |
304 |
+ |
ncomp += nco; |
305 |
|
castonly = 0; |
306 |
|
break; |
307 |
< |
case 'l': /* length */ |
307 |
> |
case 'V': /* contribution */ |
308 |
> |
*table++ = oputV; |
309 |
> |
ncomp += nco; |
310 |
> |
castonly = 0; |
311 |
> |
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
312 |
> |
error(WARNING, |
313 |
> |
"-otV accuracy depends on -aa 0 -as 0"); |
314 |
> |
break; |
315 |
> |
case 'l': /* effective distance */ |
316 |
|
*table++ = oputl; |
317 |
+ |
ncomp++; |
318 |
|
castonly = 0; |
319 |
|
break; |
320 |
+ |
case 'c': /* local coordinates */ |
321 |
+ |
*table++ = oputc; |
322 |
+ |
ncomp += 2; |
323 |
+ |
break; |
324 |
+ |
case 'L': /* single ray length */ |
325 |
+ |
*table++ = oputL; |
326 |
+ |
ncomp++; |
327 |
+ |
break; |
328 |
|
case 'p': /* point */ |
329 |
|
*table++ = oputp; |
330 |
+ |
ncomp += 3; |
331 |
|
break; |
332 |
< |
case 'n': /* normal */ |
332 |
> |
case 'n': /* perturbed normal */ |
333 |
|
*table++ = oputn; |
334 |
+ |
ncomp += 3; |
335 |
+ |
castonly = 0; |
336 |
|
break; |
337 |
+ |
case 'N': /* unperturbed normal */ |
338 |
+ |
*table++ = oputN; |
339 |
+ |
ncomp += 3; |
340 |
+ |
break; |
341 |
|
case 's': /* surface */ |
342 |
|
*table++ = oputs; |
343 |
+ |
ncomp++; |
344 |
|
break; |
345 |
|
case 'w': /* weight */ |
346 |
|
*table++ = oputw; |
347 |
+ |
ncomp++; |
348 |
|
break; |
349 |
+ |
case 'W': /* coefficient */ |
350 |
+ |
*table++ = oputW; |
351 |
+ |
ncomp += nco; |
352 |
+ |
castonly = 0; |
353 |
+ |
if (ambounce > 0 && (ambacc > FTINY) | (ambssamp > 0)) |
354 |
+ |
error(WARNING, |
355 |
+ |
"-otW accuracy depends on -aa 0 -as 0"); |
356 |
+ |
break; |
357 |
|
case 'm': /* modifier */ |
358 |
|
*table++ = oputm; |
359 |
+ |
ncomp++; |
360 |
|
break; |
361 |
+ |
case 'M': /* material */ |
362 |
+ |
*table++ = oputM; |
363 |
+ |
ncomp++; |
364 |
+ |
break; |
365 |
+ |
case '~': /* tilde */ |
366 |
+ |
*table++ = oputtilde; |
367 |
+ |
break; |
368 |
+ |
default: |
369 |
+ |
sprintf(errmsg, "unrecognized output option '%c'", *vs); |
370 |
+ |
error(USER, errmsg); |
371 |
|
} |
372 |
+ |
while (*++vs); |
373 |
+ |
|
374 |
|
*table = NULL; |
375 |
+ |
if (*every_out != NULL) |
376 |
+ |
ncomp = 0; |
377 |
+ |
/* compatibility */ |
378 |
+ |
if ((do_irrad | imm_irrad) && castonly) |
379 |
+ |
error(USER, "-I+ and -i+ options require some value output"); |
380 |
+ |
for (table = ray_out; *table != NULL; table++) { |
381 |
+ |
if ((*table == oputV) | (*table == oputW)) |
382 |
+ |
error(WARNING, "-oVW options require trace mode"); |
383 |
+ |
if ((do_irrad | imm_irrad) && |
384 |
+ |
(*table == oputr) | (*table == oputR) | |
385 |
+ |
(*table == oputx) | (*table == oputX)) |
386 |
+ |
error(WARNING, "-orRxX options incompatible with -I+ and -i+"); |
387 |
+ |
} |
388 |
+ |
return(ncomp); |
389 |
|
} |
390 |
|
|
391 |
|
|
392 |
< |
traceray(org, dir) /* compute and print ray value(s) */ |
393 |
< |
FVECT org, dir; |
392 |
> |
static void |
393 |
> |
bogusray(void) /* print out empty record */ |
394 |
|
{ |
395 |
< |
register int (**tp)(); |
395 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
396 |
> |
printvals(&thisray); |
397 |
> |
} |
398 |
|
|
196 |
– |
VCOPY(thisray.rorg, org); |
197 |
– |
VCOPY(thisray.rdir, dir); |
198 |
– |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
199 |
– |
if (castonly) |
200 |
– |
localhit(&thisray, &thescene) || sourcehit(&thisray); |
201 |
– |
else |
202 |
– |
rayvalue(&thisray); |
399 |
|
|
400 |
< |
if (ray_out[0] == NULL) |
400 |
> |
static void |
401 |
> |
raycast( /* compute first ray intersection only */ |
402 |
> |
RAY *r |
403 |
> |
) |
404 |
> |
{ |
405 |
> |
if (!localhit(r, &thescene)) { |
406 |
> |
if (r->ro == &Aftplane) { /* clipped */ |
407 |
> |
r->ro = NULL; |
408 |
> |
r->rot = FHUGE; |
409 |
> |
} else |
410 |
> |
sourcehit(r); |
411 |
> |
} |
412 |
> |
} |
413 |
> |
|
414 |
> |
|
415 |
> |
static void |
416 |
> |
rayirrad( /* compute irradiance rather than radiance */ |
417 |
> |
RAY *r |
418 |
> |
) |
419 |
> |
{ |
420 |
> |
void (*old_revf)(RAY *) = r->revf; |
421 |
> |
/* pretend we hit surface */ |
422 |
> |
r->rxt = r->rot = 1e-5; |
423 |
> |
VSUM(r->rop, r->rorg, r->rdir, r->rot); |
424 |
> |
r->ron[0] = -r->rdir[0]; |
425 |
> |
r->ron[1] = -r->rdir[1]; |
426 |
> |
r->ron[2] = -r->rdir[2]; |
427 |
> |
r->rod = 1.0; |
428 |
> |
/* compute result */ |
429 |
> |
r->revf = raytrace; |
430 |
> |
(*ofun[Lamb.otype].funp)(&Lamb, r); |
431 |
> |
r->revf = old_revf; |
432 |
> |
} |
433 |
> |
|
434 |
> |
|
435 |
> |
static void |
436 |
> |
rtcompute( /* compute and print ray value(s) */ |
437 |
> |
FVECT org, |
438 |
> |
FVECT dir, |
439 |
> |
double dmax |
440 |
> |
) |
441 |
> |
{ |
442 |
> |
/* set up ray */ |
443 |
> |
if (imm_irrad) { |
444 |
> |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
445 |
> |
thisray.rdir[0] = -dir[0]; |
446 |
> |
thisray.rdir[1] = -dir[1]; |
447 |
> |
thisray.rdir[2] = -dir[2]; |
448 |
> |
thisray.rmax = 0.0; |
449 |
> |
} else { |
450 |
> |
VCOPY(thisray.rorg, org); |
451 |
> |
VCOPY(thisray.rdir, dir); |
452 |
> |
thisray.rmax = dmax; |
453 |
> |
} |
454 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
455 |
> |
if (imm_irrad) |
456 |
> |
thisray.revf = rayirrad; |
457 |
> |
else if (castonly) |
458 |
> |
thisray.revf = raycast; |
459 |
> |
if (ray_pnprocs > 1) { /* multiprocessing FIFO? */ |
460 |
> |
if (ray_fifo_in(&thisray) < 0) |
461 |
> |
error(USER, "lost children"); |
462 |
|
return; |
463 |
+ |
} |
464 |
+ |
samplendx++; /* else do it ourselves */ |
465 |
+ |
rayvalue(&thisray); |
466 |
+ |
printvals(&thisray); |
467 |
+ |
} |
468 |
+ |
|
469 |
+ |
|
470 |
+ |
static int |
471 |
+ |
printvals( /* print requested ray values */ |
472 |
+ |
RAY *r |
473 |
+ |
) |
474 |
+ |
{ |
475 |
+ |
oputf_t **tp; |
476 |
+ |
|
477 |
+ |
if (ray_out[0] == NULL) |
478 |
+ |
return(0); |
479 |
|
for (tp = ray_out; *tp != NULL; tp++) |
480 |
< |
(**tp)(&thisray); |
480 |
> |
(**tp)(r); |
481 |
|
if (outform == 'a') |
482 |
|
putchar('\n'); |
483 |
+ |
return(1); |
484 |
|
} |
485 |
|
|
486 |
|
|
487 |
< |
irrad(org, dir) /* compute immediate irradiance value */ |
488 |
< |
FVECT org, dir; |
487 |
> |
static int |
488 |
> |
is_fifo( /* check if file pointer connected to pipe */ |
489 |
> |
FILE *fp |
490 |
> |
) |
491 |
|
{ |
492 |
< |
register int i; |
492 |
> |
#ifdef S_ISFIFO |
493 |
> |
struct stat sbuf; |
494 |
|
|
495 |
< |
for (i = 0; i < 3; i++) { |
496 |
< |
thisray.rorg[i] = org[i] + dir[i]; |
497 |
< |
thisray.rdir[i] = -dir[i]; |
498 |
< |
} |
499 |
< |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
500 |
< |
/* pretend we hit surface */ |
224 |
< |
thisray.rot = 1.0; |
225 |
< |
thisray.rod = 1.0; |
226 |
< |
VCOPY(thisray.ron, dir); |
227 |
< |
for (i = 0; i < 3; i++) /* fudge factor */ |
228 |
< |
thisray.rop[i] = org[i] + 1e-4*dir[i]; |
229 |
< |
/* compute and print */ |
230 |
< |
(*ofun[Lamb.otype].funp)(&Lamb, &thisray); |
231 |
< |
oputv(&thisray); |
232 |
< |
if (outform == 'a') |
233 |
< |
putchar('\n'); |
495 |
> |
if (fstat(fileno(fp), &sbuf) < 0) |
496 |
> |
error(SYSTEM, "fstat() failed on input stream"); |
497 |
> |
return(S_ISFIFO(sbuf.st_mode)); |
498 |
> |
#else |
499 |
> |
return (fp == stdin); /* just a guess, really */ |
500 |
> |
#endif |
501 |
|
} |
502 |
|
|
503 |
|
|
504 |
< |
getvec(vec, fmt, fp) /* get a vector from fp */ |
505 |
< |
register FVECT vec; |
506 |
< |
int fmt; |
507 |
< |
FILE *fp; |
504 |
> |
static int |
505 |
> |
getvec( /* get a vector from fp */ |
506 |
> |
FVECT vec, |
507 |
> |
int fmt, |
508 |
> |
FILE *fp |
509 |
> |
) |
510 |
|
{ |
242 |
– |
extern char *fgetword(); |
511 |
|
static float vf[3]; |
512 |
+ |
static double vd[3]; |
513 |
|
char buf[32]; |
514 |
< |
register int i; |
514 |
> |
int i; |
515 |
|
|
516 |
|
switch (fmt) { |
517 |
|
case 'a': /* ascii */ |
523 |
|
} |
524 |
|
break; |
525 |
|
case 'f': /* binary float */ |
526 |
< |
if (fread((char *)vf, sizeof(float), 3, fp) != 3) |
526 |
> |
if (getbinary(vf, sizeof(float), 3, fp) != 3) |
527 |
|
return(-1); |
528 |
< |
vec[0] = vf[0]; vec[1] = vf[1]; vec[2] = vf[2]; |
528 |
> |
VCOPY(vec, vf); |
529 |
|
break; |
530 |
|
case 'd': /* binary double */ |
531 |
< |
if (fread((char *)vec, sizeof(double), 3, fp) != 3) |
531 |
> |
if (getbinary(vd, sizeof(double), 3, fp) != 3) |
532 |
|
return(-1); |
533 |
+ |
VCOPY(vec, vd); |
534 |
|
break; |
535 |
+ |
default: |
536 |
+ |
error(CONSISTENCY, "botched input format"); |
537 |
|
} |
538 |
|
return(0); |
539 |
|
} |
540 |
|
|
541 |
|
|
542 |
< |
static |
543 |
< |
ourtrace(r) /* print ray values */ |
272 |
< |
RAY *r; |
542 |
> |
static int |
543 |
> |
iszerovec(const FVECT vec) |
544 |
|
{ |
545 |
< |
register int (**tp)(); |
545 |
> |
return (vec[0] == 0.0) & (vec[1] == 0.0) & (vec[2] == 0.0); |
546 |
> |
} |
547 |
|
|
548 |
+ |
|
549 |
+ |
static double |
550 |
+ |
nextray( /* return next ray in work group (-1.0 if EOF) */ |
551 |
+ |
FVECT org, |
552 |
+ |
FVECT dir |
553 |
+ |
) |
554 |
+ |
{ |
555 |
+ |
const size_t qlength = !vresolu * hresolu; |
556 |
+ |
|
557 |
+ |
if ((org == NULL) | (dir == NULL)) { |
558 |
+ |
if (inp_queue != NULL) /* asking to free queue */ |
559 |
+ |
free(inp_queue); |
560 |
+ |
inp_queue = NULL; |
561 |
+ |
inp_qpos = inp_qend = 0; |
562 |
+ |
return(-1.); |
563 |
+ |
} |
564 |
+ |
if (!inp_qend) { /* initialize FIFO queue */ |
565 |
+ |
int rsiz = 6*20; /* conservative ascii ray size */ |
566 |
+ |
if (inform == 'f') rsiz = 6*sizeof(float); |
567 |
+ |
else if (inform == 'd') rsiz = 6*sizeof(double); |
568 |
+ |
/* check against pipe limit */ |
569 |
+ |
if (qlength*rsiz > 512 && is_fifo(inpfp)) |
570 |
+ |
inp_queue = (FVECT *)malloc(sizeof(FVECT)*2*qlength); |
571 |
+ |
inp_qend = -(inp_queue == NULL); /* flag for no queue */ |
572 |
+ |
} |
573 |
+ |
if (inp_qend < 0) { /* not queuing? */ |
574 |
+ |
if (getvec(org, inform, inpfp) < 0 || |
575 |
+ |
getvec(dir, inform, inpfp) < 0) |
576 |
+ |
return(-1.); |
577 |
+ |
return normalize(dir); |
578 |
+ |
} |
579 |
+ |
if (inp_qpos >= inp_qend) { /* need to refill input queue? */ |
580 |
+ |
for (inp_qend = 0; inp_qend < qlength; inp_qend++) { |
581 |
+ |
if (getvec(inp_queue[2*inp_qend], inform, inpfp) < 0 |
582 |
+ |
|| getvec(inp_queue[2*inp_qend+1], |
583 |
+ |
inform, inpfp) < 0) |
584 |
+ |
break; /* hit EOF */ |
585 |
+ |
if (iszerovec(inp_queue[2*inp_qend+1])) { |
586 |
+ |
++inp_qend; /* flush request */ |
587 |
+ |
break; |
588 |
+ |
} |
589 |
+ |
} |
590 |
+ |
inp_qpos = 0; |
591 |
+ |
} |
592 |
+ |
if (inp_qpos >= inp_qend) /* unexpected EOF? */ |
593 |
+ |
return(-1.); |
594 |
+ |
VCOPY(org, inp_queue[2*inp_qpos]); |
595 |
+ |
VCOPY(dir, inp_queue[2*inp_qpos+1]); |
596 |
+ |
++inp_qpos; |
597 |
+ |
return normalize(dir); |
598 |
+ |
} |
599 |
+ |
|
600 |
+ |
|
601 |
+ |
void |
602 |
+ |
tranotify( /* record new modifier */ |
603 |
+ |
OBJECT obj |
604 |
+ |
) |
605 |
+ |
{ |
606 |
+ |
static int hitlimit = 0; |
607 |
+ |
OBJREC *o = objptr(obj); |
608 |
+ |
char **tralp; |
609 |
+ |
|
610 |
+ |
if (obj == OVOID) { /* starting over */ |
611 |
+ |
traset[0] = 0; |
612 |
+ |
hitlimit = 0; |
613 |
+ |
return; |
614 |
+ |
} |
615 |
+ |
if (hitlimit || !ismodifier(o->otype)) |
616 |
+ |
return; |
617 |
+ |
for (tralp = tralist; *tralp != NULL; tralp++) |
618 |
+ |
if (!strcmp(o->oname, *tralp)) { |
619 |
+ |
if (traset[0] >= MAXTSET) { |
620 |
+ |
error(WARNING, "too many modifiers in trace list"); |
621 |
+ |
hitlimit++; |
622 |
+ |
return; /* should this be fatal? */ |
623 |
+ |
} |
624 |
+ |
insertelem(traset, obj); |
625 |
+ |
return; |
626 |
+ |
} |
627 |
+ |
} |
628 |
+ |
|
629 |
+ |
|
630 |
+ |
static void |
631 |
+ |
ourtrace( /* print ray values */ |
632 |
+ |
RAY *r |
633 |
+ |
) |
634 |
+ |
{ |
635 |
+ |
oputf_t **tp; |
636 |
+ |
|
637 |
|
if (every_out[0] == NULL) |
638 |
|
return; |
639 |
+ |
if (r->ro == NULL) { |
640 |
+ |
if (traincl == 1) |
641 |
+ |
return; |
642 |
+ |
} else if (traincl != -1 && traincl != inset(traset, r->ro->omod)) |
643 |
+ |
return; |
644 |
|
tabin(r); |
645 |
|
for (tp = every_out; *tp != NULL; tp++) |
646 |
|
(**tp)(r); |
647 |
< |
putchar('\n'); |
647 |
> |
if (outform == 'a') |
648 |
> |
putchar('\n'); |
649 |
|
} |
650 |
|
|
651 |
|
|
652 |
< |
static |
653 |
< |
tabin(r) /* tab in appropriate amount */ |
654 |
< |
RAY *r; |
652 |
> |
static void |
653 |
> |
tabin( /* tab in appropriate amount */ |
654 |
> |
RAY *r |
655 |
> |
) |
656 |
|
{ |
657 |
< |
register RAY *rp; |
657 |
> |
const RAY *rp; |
658 |
|
|
659 |
|
for (rp = r->parent; rp != NULL; rp = rp->parent) |
660 |
|
putchar('\t'); |
661 |
|
} |
662 |
|
|
663 |
|
|
664 |
< |
static |
665 |
< |
oputo(r) /* print origin */ |
666 |
< |
register RAY *r; |
664 |
> |
static void |
665 |
> |
oputo( /* print origin */ |
666 |
> |
RAY *r |
667 |
> |
) |
668 |
|
{ |
669 |
< |
(*putreal)(r->rorg[0]); |
301 |
< |
(*putreal)(r->rorg[1]); |
302 |
< |
(*putreal)(r->rorg[2]); |
669 |
> |
(*putreal)(r->rorg, 3); |
670 |
|
} |
671 |
|
|
672 |
|
|
673 |
< |
static |
674 |
< |
oputd(r) /* print direction */ |
675 |
< |
register RAY *r; |
673 |
> |
static void |
674 |
> |
oputd( /* print direction */ |
675 |
> |
RAY *r |
676 |
> |
) |
677 |
|
{ |
678 |
< |
(*putreal)(r->rdir[0]); |
311 |
< |
(*putreal)(r->rdir[1]); |
312 |
< |
(*putreal)(r->rdir[2]); |
678 |
> |
(*putreal)(r->rdir, 3); |
679 |
|
} |
680 |
|
|
681 |
|
|
682 |
< |
static |
683 |
< |
oputv(r) /* print value */ |
684 |
< |
register RAY *r; |
682 |
> |
static void |
683 |
> |
oputr( /* print mirrored contribution */ |
684 |
> |
RAY *r |
685 |
> |
) |
686 |
|
{ |
687 |
< |
(*putreal)(colval(r->rcol,RED)); |
321 |
< |
(*putreal)(colval(r->rcol,GRN)); |
322 |
< |
(*putreal)(colval(r->rcol,BLU)); |
687 |
> |
putscolor(r->mcol); |
688 |
|
} |
689 |
|
|
690 |
|
|
691 |
< |
static |
692 |
< |
oputl(r) /* print length */ |
693 |
< |
register RAY *r; |
691 |
> |
|
692 |
> |
static void |
693 |
> |
oputR( /* print mirrored distance */ |
694 |
> |
RAY *r |
695 |
> |
) |
696 |
|
{ |
697 |
< |
(*putreal)(r->rt); |
697 |
> |
(*putreal)(&r->rmt, 1); |
698 |
|
} |
699 |
|
|
700 |
|
|
701 |
< |
static |
702 |
< |
oputp(r) /* print point */ |
703 |
< |
register RAY *r; |
701 |
> |
static void |
702 |
> |
oputx( /* print unmirrored contribution */ |
703 |
> |
RAY *r |
704 |
> |
) |
705 |
|
{ |
706 |
< |
if (r->rot < FHUGE) { |
707 |
< |
(*putreal)(r->rop[0]); |
708 |
< |
(*putreal)(r->rop[1]); |
709 |
< |
(*putreal)(r->rop[2]); |
710 |
< |
} else { |
711 |
< |
(*putreal)(0.0); |
712 |
< |
(*putreal)(0.0); |
713 |
< |
(*putreal)(0.0); |
706 |
> |
SCOLOR cdiff; |
707 |
> |
|
708 |
> |
copyscolor(cdiff, r->rcol); |
709 |
> |
sopscolor(cdiff, -=, r->mcol); |
710 |
> |
|
711 |
> |
putscolor(cdiff); |
712 |
> |
} |
713 |
> |
|
714 |
> |
|
715 |
> |
static void |
716 |
> |
oputX( /* print unmirrored distance */ |
717 |
> |
RAY *r |
718 |
> |
) |
719 |
> |
{ |
720 |
> |
(*putreal)(&r->rxt, 1); |
721 |
> |
} |
722 |
> |
|
723 |
> |
|
724 |
> |
static void |
725 |
> |
oputv( /* print value */ |
726 |
> |
RAY *r |
727 |
> |
) |
728 |
> |
{ |
729 |
> |
putscolor(r->rcol); |
730 |
> |
} |
731 |
> |
|
732 |
> |
|
733 |
> |
static void |
734 |
> |
oputV( /* print value contribution */ |
735 |
> |
RAY *r |
736 |
> |
) |
737 |
> |
{ |
738 |
> |
SCOLOR contr; |
739 |
> |
|
740 |
> |
raycontrib(contr, r, PRIMARY); |
741 |
> |
smultscolor(contr, r->rcol); |
742 |
> |
putscolor(contr); |
743 |
> |
} |
744 |
> |
|
745 |
> |
|
746 |
> |
static void |
747 |
> |
oputl( /* print effective distance */ |
748 |
> |
RAY *r |
749 |
> |
) |
750 |
> |
{ |
751 |
> |
RREAL d = raydistance(r); |
752 |
> |
|
753 |
> |
(*putreal)(&d, 1); |
754 |
> |
} |
755 |
> |
|
756 |
> |
|
757 |
> |
static void |
758 |
> |
oputL( /* print single ray length */ |
759 |
> |
RAY *r |
760 |
> |
) |
761 |
> |
{ |
762 |
> |
(*putreal)(&r->rot, 1); |
763 |
> |
} |
764 |
> |
|
765 |
> |
|
766 |
> |
static void |
767 |
> |
oputc( /* print local coordinates */ |
768 |
> |
RAY *r |
769 |
> |
) |
770 |
> |
{ |
771 |
> |
(*putreal)(r->uv, 2); |
772 |
> |
} |
773 |
> |
|
774 |
> |
|
775 |
> |
static RREAL vdummy[3] = {0.0, 0.0, 0.0}; |
776 |
> |
|
777 |
> |
|
778 |
> |
static void |
779 |
> |
oputp( /* print intersection point */ |
780 |
> |
RAY *r |
781 |
> |
) |
782 |
> |
{ |
783 |
> |
(*putreal)(r->rop, 3); /* set to ray origin if distant or no hit */ |
784 |
> |
} |
785 |
> |
|
786 |
> |
|
787 |
> |
static void |
788 |
> |
oputN( /* print unperturbed normal */ |
789 |
> |
RAY *r |
790 |
> |
) |
791 |
> |
{ |
792 |
> |
if (r->ro == NULL) { /* zero vector if clipped or no hit */ |
793 |
> |
(*putreal)(vdummy, 3); |
794 |
> |
return; |
795 |
|
} |
796 |
+ |
if (r->rflips & 1) { /* undo any flippin' flips */ |
797 |
+ |
FVECT unrm; |
798 |
+ |
unrm[0] = -r->ron[0]; |
799 |
+ |
unrm[1] = -r->ron[1]; |
800 |
+ |
unrm[2] = -r->ron[2]; |
801 |
+ |
(*putreal)(unrm, 3); |
802 |
+ |
} else |
803 |
+ |
(*putreal)(r->ron, 3); |
804 |
|
} |
805 |
|
|
806 |
|
|
807 |
< |
static |
808 |
< |
oputn(r) /* print normal */ |
809 |
< |
register RAY *r; |
807 |
> |
static void |
808 |
> |
oputn( /* print perturbed normal */ |
809 |
> |
RAY *r |
810 |
> |
) |
811 |
|
{ |
812 |
< |
if (r->rot < FHUGE) { |
813 |
< |
(*putreal)(r->ron[0]); |
814 |
< |
(*putreal)(r->ron[1]); |
815 |
< |
(*putreal)(r->ron[2]); |
816 |
< |
} else { |
359 |
< |
(*putreal)(0.0); |
360 |
< |
(*putreal)(0.0); |
361 |
< |
(*putreal)(0.0); |
812 |
> |
FVECT pnorm; |
813 |
> |
|
814 |
> |
if (r->ro == NULL) { /* clipped or no hit */ |
815 |
> |
(*putreal)(vdummy, 3); |
816 |
> |
return; |
817 |
|
} |
818 |
+ |
raynormal(pnorm, r); |
819 |
+ |
(*putreal)(pnorm, 3); |
820 |
|
} |
821 |
|
|
822 |
|
|
823 |
< |
static |
824 |
< |
oputs(r) /* print name */ |
825 |
< |
register RAY *r; |
823 |
> |
static void |
824 |
> |
oputs( /* print name */ |
825 |
> |
RAY *r |
826 |
> |
) |
827 |
|
{ |
828 |
|
if (r->ro != NULL) |
829 |
|
fputs(r->ro->oname, stdout); |
833 |
|
} |
834 |
|
|
835 |
|
|
836 |
< |
static |
837 |
< |
oputw(r) /* print weight */ |
838 |
< |
register RAY *r; |
836 |
> |
static void |
837 |
> |
oputw( /* print weight */ |
838 |
> |
RAY *r |
839 |
> |
) |
840 |
|
{ |
841 |
< |
(*putreal)(r->rweight); |
841 |
> |
RREAL rwt = r->rweight; |
842 |
> |
|
843 |
> |
(*putreal)(&rwt, 1); |
844 |
|
} |
845 |
|
|
846 |
|
|
847 |
< |
static |
848 |
< |
oputm(r) /* print modifier */ |
849 |
< |
register RAY *r; |
847 |
> |
static void |
848 |
> |
oputW( /* print coefficient */ |
849 |
> |
RAY *r |
850 |
> |
) |
851 |
|
{ |
852 |
+ |
SCOLOR contr; |
853 |
+ |
/* shadow ray not on source? */ |
854 |
+ |
if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
855 |
+ |
scolorblack(contr); |
856 |
+ |
else |
857 |
+ |
raycontrib(contr, r, PRIMARY); |
858 |
+ |
|
859 |
+ |
putscolor(contr); |
860 |
+ |
} |
861 |
+ |
|
862 |
+ |
|
863 |
+ |
static void |
864 |
+ |
oputm( /* print modifier */ |
865 |
+ |
RAY *r |
866 |
+ |
) |
867 |
+ |
{ |
868 |
|
if (r->ro != NULL) |
869 |
< |
fputs(objptr(r->ro->omod)->oname, stdout); |
869 |
> |
if (r->ro->omod != OVOID) |
870 |
> |
fputs(objptr(r->ro->omod)->oname, stdout); |
871 |
> |
else |
872 |
> |
fputs(VOIDID, stdout); |
873 |
|
else |
874 |
|
putchar('*'); |
875 |
|
putchar('\t'); |
876 |
|
} |
877 |
|
|
878 |
|
|
879 |
< |
static |
880 |
< |
puta(v) /* print ascii value */ |
881 |
< |
double v; |
879 |
> |
static void |
880 |
> |
oputM( /* print material */ |
881 |
> |
RAY *r |
882 |
> |
) |
883 |
|
{ |
884 |
< |
printf("%e\t", v); |
884 |
> |
OBJREC *mat; |
885 |
> |
|
886 |
> |
if (r->ro != NULL) { |
887 |
> |
if ((mat = findmaterial(r->ro)) != NULL) |
888 |
> |
fputs(mat->oname, stdout); |
889 |
> |
else |
890 |
> |
fputs(VOIDID, stdout); |
891 |
> |
} else |
892 |
> |
putchar('*'); |
893 |
> |
putchar('\t'); |
894 |
|
} |
895 |
|
|
896 |
|
|
897 |
< |
static |
898 |
< |
putd(v) /* print binary double */ |
899 |
< |
double v; |
897 |
> |
static void |
898 |
> |
oputtilde( /* output tilde (spacer) */ |
899 |
> |
RAY *r |
900 |
> |
) |
901 |
|
{ |
902 |
< |
fwrite((char *)&v, sizeof(v), 1, stdout); |
902 |
> |
fputs("~\t", stdout); |
903 |
|
} |
904 |
|
|
905 |
|
|
906 |
< |
static |
907 |
< |
putf(v) /* print binary float */ |
908 |
< |
double v; |
906 |
> |
static void |
907 |
> |
puta( /* print ascii value(s) */ |
908 |
> |
RREAL *v, int n |
909 |
> |
) |
910 |
|
{ |
911 |
< |
float f = v; |
911 |
> |
if (n == 3) { |
912 |
> |
printf("%e\t%e\t%e\t", v[0], v[1], v[2]); |
913 |
> |
return; |
914 |
> |
} |
915 |
> |
while (n--) |
916 |
> |
printf("%e\t", *v++); |
917 |
> |
} |
918 |
|
|
919 |
< |
fwrite((char *)&f, sizeof(f), 1, stdout); |
919 |
> |
|
920 |
> |
static void |
921 |
> |
putd(RREAL *v, int n) /* output binary double(s) */ |
922 |
> |
{ |
923 |
> |
#ifdef SMLFLT |
924 |
> |
double da[MAXCSAMP]; |
925 |
> |
int i; |
926 |
> |
|
927 |
> |
if (n > MAXCSAMP) |
928 |
> |
error(INTERNAL, "code error in putd()"); |
929 |
> |
for (i = n; i--; ) |
930 |
> |
da[i] = v[i]; |
931 |
> |
putbinary(da, sizeof(double), n, stdout); |
932 |
> |
#else |
933 |
> |
putbinary(v, sizeof(RREAL), n, stdout); |
934 |
> |
#endif |
935 |
> |
} |
936 |
> |
|
937 |
> |
|
938 |
> |
static void |
939 |
> |
putf(RREAL *v, int n) /* output binary float(s) */ |
940 |
> |
{ |
941 |
> |
#ifndef SMLFLT |
942 |
> |
float fa[MAXCSAMP]; |
943 |
> |
int i; |
944 |
> |
|
945 |
> |
if (n > MAXCSAMP) |
946 |
> |
error(INTERNAL, "code error in putf()"); |
947 |
> |
for (i = n; i--; ) |
948 |
> |
fa[i] = v[i]; |
949 |
> |
putbinary(fa, sizeof(float), n, stdout); |
950 |
> |
#else |
951 |
> |
putbinary(v, sizeof(RREAL), n, stdout); |
952 |
> |
#endif |
953 |
> |
} |
954 |
> |
|
955 |
> |
|
956 |
> |
static void |
957 |
> |
putscolor(COLORV *scol) /* output (spectral) color */ |
958 |
> |
{ |
959 |
> |
static COLORMAT xyz2myrgbmat; |
960 |
> |
SCOLOR my_scol; |
961 |
> |
COLOR col; |
962 |
> |
/* single channel output? */ |
963 |
> |
if (sens_curve != NULL) { |
964 |
> |
RREAL v = (*sens_curve)(scol) * out_scalefactor; |
965 |
> |
(*putreal)(&v, 1); |
966 |
> |
return; |
967 |
> |
} |
968 |
> |
if (out_scalefactor != 1.) { /* apply scalefactor if any */ |
969 |
> |
copyscolor(my_scol, scol); |
970 |
> |
scalescolor(my_scol, out_scalefactor); |
971 |
> |
scol = my_scol; |
972 |
> |
} |
973 |
> |
if (out_prims == NULL) { /* full spectral reporting */ |
974 |
> |
if (outform == 'c') { |
975 |
> |
SCOLR sclr; |
976 |
> |
scolor_scolr(sclr, scol); |
977 |
> |
putbinary(sclr, LSCOLR, 1, stdout); |
978 |
> |
} else if (sizeof(RREAL) != sizeof(COLORV)) { |
979 |
> |
RREAL sreal[MAXCSAMP]; |
980 |
> |
int i = NCSAMP; |
981 |
> |
while (i--) sreal[i] = scol[i]; |
982 |
> |
(*putreal)(sreal, NCSAMP); |
983 |
> |
} else |
984 |
> |
(*putreal)((RREAL *)scol, NCSAMP); |
985 |
> |
return; |
986 |
> |
} |
987 |
> |
if (out_prims == xyzprims) { |
988 |
> |
scolor_cie(col, scol); |
989 |
> |
} else if (out_prims == stdprims) { |
990 |
> |
scolor_rgb(col, scol); |
991 |
> |
} else { |
992 |
> |
COLOR xyz; |
993 |
> |
if (xyz2myrgbmat[0][0] == 0) |
994 |
> |
compxyz2rgbWBmat(xyz2myrgbmat, out_prims); |
995 |
> |
scolor_cie(xyz, scol); |
996 |
> |
colortrans(col, xyz2myrgbmat, xyz); |
997 |
> |
clipgamut(col, xyz[CIEY], CGAMUT_LOWER, cblack, cwhite); |
998 |
> |
} |
999 |
> |
if (outform == 'c') { |
1000 |
> |
COLR clr; |
1001 |
> |
setcolr(clr, colval(col,RED), colval(col,GRN), colval(col,BLU)); |
1002 |
> |
putbinary(clr, sizeof(COLR), 1, stdout); |
1003 |
> |
} else if (sizeof(RREAL) != sizeof(COLORV)) { |
1004 |
> |
RREAL creal[3]; |
1005 |
> |
copycolor(creal, col); |
1006 |
> |
(*putreal)(creal, 3); |
1007 |
> |
} else |
1008 |
> |
(*putreal)((RREAL *)col, 3); |
1009 |
|
} |