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#ifndef lint
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static const char RCSid[] = "$Id: rtrace.c,v 2.112 2024/01/06 01:21:34 greg Exp $";
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#endif
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/*
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| 5 |
* rtrace.c - program and variables for individual ray tracing.
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*/
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#include "copyright.h"
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/*
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* Input is in the form:
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*
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* xorg yorg zorg xdir ydir zdir
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*
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* The direction need not be normalized. Output is flexible.
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* If the direction vector is (0,0,0), then the output is flushed.
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* All values default to ascii representation of real
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* numbers. Binary representations can be selected
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* with '-ff' for float or '-fd' for double. By default,
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* radiance is computed. The '-i' or '-I' options indicate that
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* irradiance values are desired.
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*/
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| 24 |
#include <time.h>
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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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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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extern int imm_irrad; /* compute immediate irradiance? */
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extern int lim_dist; /* limit distance? */
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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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extern int hresolu; /* horizontal resolution */
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extern int vresolu; /* vertical resolution */
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extern int castonly; /* only doing ray-casting? */
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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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#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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static int Tflag = 0; /* source tracing enabled? */
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static RAY thisray; /* for our convenience */
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static FILE *inpfp = NULL; /* input stream pointer */
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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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typedef void putf_t(RREAL *v, int n);
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static putf_t puta, putd, putf;
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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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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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static void putscolor(COLORV *scol, double sf);
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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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| 96 |
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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| 101 |
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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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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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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static void
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trace_sources(void) /* trace rays to light sources, also */
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{
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int sn;
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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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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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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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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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else
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fflush(stdout);
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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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| 195 |
if (d == 0.0) { /* flush request? */
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if (something2flush) {
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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;
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} else
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bogusray();
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} else { /* compute and print */
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rtcompute(orig, direc, lim_dist ? d : 0.0);
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if (!--nextflush) { /* flush if time */
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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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fflush(stdout);
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nextflush = hresolu;
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} else
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something2flush = 1;
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}
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if (ferror(stdout))
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error(SYSTEM, "write error");
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if (vcount && !--vcount) /* check for end */
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break;
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}
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if (ray_pnprocs > 1) { /* clean up children */
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if (ray_fifo_flush() < 0)
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error(USER, "unable to complete processing");
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ray_pclose(0);
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}
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if (vcount)
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error(WARNING, "unexpected EOF on input");
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if (fflush(stdout) < 0)
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error(SYSTEM, "write error");
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if (fname != NULL) {
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fclose(inpfp);
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inpfp = NULL;
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}
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nextray(NULL, NULL);
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}
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| 236 |
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int
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setrtoutput(void) /* set up output tables, return #comp */
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| 239 |
{
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| 240 |
char *vs = outvals;
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| 241 |
oputf_t **table = ray_out;
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| 242 |
const int nco = (sens_curve != NULL) ? 1 :
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(out_prims != NULL) ? 3 : NCSAMP;
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int ncomp = 0;
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if (!*vs)
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error(USER, "empty output specification");
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switch (outform) { /* make sure (*putreal)() calls someone! */
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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 (outvals[1] || !strchr("vrx", outvals[0]))
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error(USER, "color format only with -ov, -or, -ox");
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if (nco < 3)
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error(USER, "color format incompatible with -pY, -pS, -pM");
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break;
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default:
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| 260 |
error(CONSISTENCY, "botched output format");
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}
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castonly = 1; /* sets castonly as side-effect */
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do
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switch (*vs) {
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case 'T': /* trace sources */
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Tflag++;
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| 267 |
/* fall through */
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| 268 |
case 't': /* trace */
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| 269 |
if (!vs[1]) break;
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| 270 |
*table = NULL;
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table = every_out;
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| 272 |
castonly = 0;
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| 273 |
break;
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| 274 |
case 'o': /* origin */
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| 275 |
*table++ = oputo;
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| 276 |
ncomp += 3;
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| 277 |
break;
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| 278 |
case 'd': /* direction */
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| 279 |
*table++ = oputd;
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| 280 |
ncomp += 3;
|
| 281 |
break;
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| 282 |
case 'r': /* reflected contrib. */
|
| 283 |
*table++ = oputr;
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| 284 |
ncomp += nco;
|
| 285 |
castonly = 0;
|
| 286 |
break;
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| 287 |
case 'R': /* reflected distance */
|
| 288 |
*table++ = oputR;
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| 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 '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': /* 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 |
static void
|
| 393 |
bogusray(void) /* print out empty record */
|
| 394 |
{
|
| 395 |
rayorigin(&thisray, PRIMARY, NULL, NULL);
|
| 396 |
printvals(&thisray);
|
| 397 |
}
|
| 398 |
|
| 399 |
|
| 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)(r);
|
| 481 |
if (outform == 'a')
|
| 482 |
putchar('\n');
|
| 483 |
return(1);
|
| 484 |
}
|
| 485 |
|
| 486 |
|
| 487 |
static int
|
| 488 |
is_fifo( /* check if file pointer connected to pipe */
|
| 489 |
FILE *fp
|
| 490 |
)
|
| 491 |
{
|
| 492 |
#ifdef S_ISFIFO
|
| 493 |
struct stat sbuf;
|
| 494 |
|
| 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 |
static int
|
| 505 |
getvec( /* get a vector from fp */
|
| 506 |
FVECT vec,
|
| 507 |
int fmt,
|
| 508 |
FILE *fp
|
| 509 |
)
|
| 510 |
{
|
| 511 |
static float vf[3];
|
| 512 |
static double vd[3];
|
| 513 |
char buf[32];
|
| 514 |
int i;
|
| 515 |
|
| 516 |
switch (fmt) {
|
| 517 |
case 'a': /* ascii */
|
| 518 |
for (i = 0; i < 3; i++) {
|
| 519 |
if (fgetword(buf, sizeof(buf), fp) == NULL ||
|
| 520 |
!isflt(buf))
|
| 521 |
return(-1);
|
| 522 |
vec[i] = atof(buf);
|
| 523 |
}
|
| 524 |
break;
|
| 525 |
case 'f': /* binary float */
|
| 526 |
if (getbinary(vf, sizeof(float), 3, fp) != 3)
|
| 527 |
return(-1);
|
| 528 |
VCOPY(vec, vf);
|
| 529 |
break;
|
| 530 |
case 'd': /* binary double */
|
| 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 int
|
| 543 |
iszerovec(const FVECT vec)
|
| 544 |
{
|
| 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 |
if (outform == 'a')
|
| 648 |
putchar('\n');
|
| 649 |
}
|
| 650 |
|
| 651 |
|
| 652 |
static void
|
| 653 |
tabin( /* tab in appropriate amount */
|
| 654 |
RAY *r
|
| 655 |
)
|
| 656 |
{
|
| 657 |
const RAY *rp;
|
| 658 |
|
| 659 |
for (rp = r->parent; rp != NULL; rp = rp->parent)
|
| 660 |
putchar('\t');
|
| 661 |
}
|
| 662 |
|
| 663 |
|
| 664 |
static void
|
| 665 |
oputo( /* print origin */
|
| 666 |
RAY *r
|
| 667 |
)
|
| 668 |
{
|
| 669 |
(*putreal)(r->rorg, 3);
|
| 670 |
}
|
| 671 |
|
| 672 |
|
| 673 |
static void
|
| 674 |
oputd( /* print direction */
|
| 675 |
RAY *r
|
| 676 |
)
|
| 677 |
{
|
| 678 |
(*putreal)(r->rdir, 3);
|
| 679 |
}
|
| 680 |
|
| 681 |
|
| 682 |
static void
|
| 683 |
oputr( /* print mirrored contribution */
|
| 684 |
RAY *r
|
| 685 |
)
|
| 686 |
{
|
| 687 |
putscolor(r->mcol, out_scalefactor);
|
| 688 |
}
|
| 689 |
|
| 690 |
|
| 691 |
|
| 692 |
static void
|
| 693 |
oputR( /* print mirrored distance */
|
| 694 |
RAY *r
|
| 695 |
)
|
| 696 |
{
|
| 697 |
(*putreal)(&r->rmt, 1);
|
| 698 |
}
|
| 699 |
|
| 700 |
|
| 701 |
static void
|
| 702 |
oputx( /* print unmirrored contribution */
|
| 703 |
RAY *r
|
| 704 |
)
|
| 705 |
{
|
| 706 |
SCOLOR cdiff;
|
| 707 |
|
| 708 |
copyscolor(cdiff, r->rcol);
|
| 709 |
sopscolor(cdiff, -=, r->mcol);
|
| 710 |
|
| 711 |
putscolor(cdiff, out_scalefactor);
|
| 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, out_scalefactor);
|
| 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, out_scalefactor);
|
| 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 void
|
| 808 |
oputn( /* print perturbed normal */
|
| 809 |
RAY *r
|
| 810 |
)
|
| 811 |
{
|
| 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 void
|
| 824 |
oputs( /* print name */
|
| 825 |
RAY *r
|
| 826 |
)
|
| 827 |
{
|
| 828 |
if (r->ro != NULL)
|
| 829 |
fputs(r->ro->oname, stdout);
|
| 830 |
else
|
| 831 |
putchar('*');
|
| 832 |
putchar('\t');
|
| 833 |
}
|
| 834 |
|
| 835 |
|
| 836 |
static void
|
| 837 |
oputw( /* print weight */
|
| 838 |
RAY *r
|
| 839 |
)
|
| 840 |
{
|
| 841 |
RREAL rwt = r->rweight;
|
| 842 |
|
| 843 |
(*putreal)(&rwt, 1);
|
| 844 |
}
|
| 845 |
|
| 846 |
|
| 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, 1.);
|
| 860 |
}
|
| 861 |
|
| 862 |
|
| 863 |
static void
|
| 864 |
oputm( /* print modifier */
|
| 865 |
RAY *r
|
| 866 |
)
|
| 867 |
{
|
| 868 |
if (r->ro != NULL)
|
| 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 void
|
| 880 |
oputM( /* print material */
|
| 881 |
RAY *r
|
| 882 |
)
|
| 883 |
{
|
| 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 void
|
| 898 |
oputtilde( /* output tilde (spacer) */
|
| 899 |
RAY *r
|
| 900 |
)
|
| 901 |
{
|
| 902 |
fputs("~\t", stdout);
|
| 903 |
}
|
| 904 |
|
| 905 |
|
| 906 |
static void
|
| 907 |
puta( /* print ascii value(s) */
|
| 908 |
RREAL *v, int n
|
| 909 |
)
|
| 910 |
{
|
| 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 |
|
| 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, double sf) /* 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) * sf;
|
| 965 |
(*putreal)(&v, 1);
|
| 966 |
return;
|
| 967 |
}
|
| 968 |
if (sf != 1.) { /* apply scalefactor if any */
|
| 969 |
copyscolor(my_scol, scol);
|
| 970 |
scalescolor(my_scol, sf);
|
| 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 |
}
|
