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#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Copy data into a holodeck file |
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*/ |
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|
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#include "holo.h" |
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#include "view.h" |
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|
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#ifndef BKBSIZE |
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#define BKBSIZE 256 /* beam clump size (kilobytes) */ |
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#endif |
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|
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int checkdepth = 1; /* check depth (!-d option)? */ |
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int checkrepeats = 0; /* check for repeats (-u option)? */ |
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int frompicz; /* input from pictures & depth-buffers? */ |
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int noutsects; /* number of output sections */ |
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char obstr, unobstr; /* flag pointer values */ |
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|
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char *progname; /* global argv[0] */ |
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|
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|
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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int i; |
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|
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progname = argv[0]; |
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frompicz = -1; |
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for (i = 2; i < argc && argv[i][0] == '-'; i++) |
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switch (argv[i][1]) { |
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case 'u': |
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checkrepeats = 1; |
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break; |
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case 'd': |
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checkdepth = 0; |
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break; |
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case 'h': |
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frompicz = 0; |
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break; |
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case 'p': |
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frompicz = 1; |
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break; |
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default: |
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goto userr; |
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} |
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if (i >= argc || frompicz < 0) |
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goto userr; |
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if (frompicz && (argc-i)%2) |
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goto userr; |
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noutsects = openholo(argv[1], 1); |
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if (frompicz) { |
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for ( ; i < argc; i += 2) |
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addpicz(argv[i], argv[i+1]); |
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} else { |
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if (BKBSIZE*1024*1.5 > hdcachesize) |
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hdcachesize = BKBSIZE*1024*1.5; |
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for ( ; i < argc; i++) |
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addholo(argv[i]); |
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} |
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quit(0); |
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userr: |
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fprintf(stderr, "Usage: %s output.hdk [-u][-d] -h inp1.hdk ..\n", |
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progname); |
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fprintf(stderr, " Or: %s output.hdk [-u][-d] -p inp1.pic inp1.zbf ..\n", |
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progname); |
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exit(1); |
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} |
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|
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|
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#define H_BADF 01 |
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#define H_OBST 02 |
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#define H_OBSF 04 |
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|
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int |
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holheadline(s, hf) /* check holodeck header line */ |
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register char *s; |
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int *hf; |
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{ |
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char fmt[32]; |
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|
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if (formatval(fmt, s)) { |
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if (strcmp(fmt, HOLOFMT)) |
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*hf |= H_BADF; |
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else |
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*hf &= ~H_BADF; |
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return(0); |
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} |
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if (!strncmp(s, "OBSTRUCTIONS=", 13)) { |
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s += 13; |
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while (*s == ' ') s++; |
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if (*s == 't' | *s == 'T') |
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*hf |= H_OBST; |
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else if (*s == 'f' | *s == 'F') |
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*hf |= H_OBSF; |
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else |
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error(WARNING, "bad OBSTRUCTIONS value in holodeck"); |
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return(0); |
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} |
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return(0); |
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} |
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|
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int |
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openholo(fname, append) /* open existing holodeck file for i/o */ |
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char *fname; |
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int append; |
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{ |
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extern long ftell(); |
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FILE *fp; |
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int fd; |
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int hflags = 0; |
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long nextloc; |
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int n; |
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/* open holodeck file */ |
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if ((fp = fopen(fname, append ? "r+" : "r")) == NULL) { |
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sprintf(errmsg, "cannot open \"%s\" for %s", fname, |
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append ? "appending" : "reading"); |
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error(SYSTEM, errmsg); |
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} |
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/* check header and magic number */ |
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if (getheader(fp, holheadline, (char *)&hflags) < 0 || |
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hflags&H_BADF || getw(fp) != HOLOMAGIC) { |
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sprintf(errmsg, "file \"%s\" not in holodeck format", fname); |
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error(USER, errmsg); |
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} |
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fd = dup(fileno(fp)); /* dup file handle */ |
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nextloc = ftell(fp); /* get stdio position */ |
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fclose(fp); /* done with stdio */ |
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for (n = 0; nextloc > 0L; n++) { /* initialize each section */ |
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lseek(fd, (off_t)nextloc, 0); |
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read(fd, (char *)&nextloc, sizeof(nextloc)); |
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hdinit(fd, NULL)->priv = hflags&H_OBST ? &obstr : |
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hflags&H_OBSF ? &unobstr : (char *)NULL; |
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} |
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return(n); |
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} |
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|
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#undef H_BADF |
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#undef H_OBST |
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#undef H_OBSF |
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|
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|
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addray(ro, rd, d, cv) /* add a ray to our output holodeck */ |
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FVECT ro, rd; |
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double d; |
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COLR cv; |
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{ |
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int sn, bi, n; |
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register HOLO *hp; |
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GCOORD gc[2]; |
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BYTE rr[2][2]; |
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BEAM *bp; |
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double d0, d1; |
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unsigned dc; |
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register RAYVAL *rv; |
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/* check each output section */ |
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for (sn = noutsects; sn--; ) { |
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hp = hdlist[sn]; |
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d0 = hdinter(gc, rr, &d1, hp, ro, rd); |
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if (d <= d0 || d1 < -0.001) |
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continue; /* missed section */ |
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if (checkdepth) { /* check depth */ |
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if (hp->priv == &obstr && d0 < -0.001) |
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continue; /* ray starts too late */ |
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if (hp->priv == &unobstr && d < 0.999*d1) |
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continue; /* ray ends too soon */ |
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} |
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dc = hdcode(hp, d-d0); |
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bi = hdbindex(hp, gc); /* check for duplicates */ |
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if (checkrepeats && (bp = hdgetbeam(hp, bi)) != NULL) { |
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for (n = bp->nrm, rv = hdbray(bp); n--; rv++) |
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if ((hp->priv != NULL || rv->d == dc) && |
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rv->r[0][0] == rr[0][0] && |
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rv->r[0][1] == rr[0][1] && |
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rv->r[1][0] == rr[1][0] && |
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rv->r[1][1] == rr[1][1]) |
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break; |
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if (n >= 0) |
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continue; /* found a matching ray */ |
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} |
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rv = hdnewrays(hp, bi, 1); |
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rv->d = dc; |
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rv->r[0][0] = rr[0][0]; rv->r[0][1] = rr[0][1]; |
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rv->r[1][0] = rr[1][0]; rv->r[1][1] = rr[1][1]; |
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copycolr(rv->v, cv); |
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} |
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} |
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|
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|
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static BEAMI *beamdir; |
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|
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static int |
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bpcmp(b1p, b2p) /* compare beam positions on disk */ |
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int *b1p, *b2p; |
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{ |
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register long pdif = beamdir[*b1p].fo - beamdir[*b2p].fo; |
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|
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if (pdif > 0L) return(1); |
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if (pdif < 0L) return(-1); |
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return(0); |
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} |
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|
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static int |
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addclump(hp, bq, nb) /* transfer the given clump and free */ |
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HOLO *hp; |
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int *bq, nb; |
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{ |
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GCOORD gc[2]; |
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FVECT ro, rd; |
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double d; |
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int i; |
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register int k; |
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register BEAM *bp; |
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/* sort based on file position */ |
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beamdir = hp->bi; |
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qsort((char *)bq, nb, sizeof(*bq), bpcmp); |
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/* transfer each beam */ |
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for (i = 0; i < nb; i++) { |
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bp = hdgetbeam(hp, bq[i]); |
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hdbcoord(gc, hp, bq[i]); |
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/* add each ray to output */ |
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for (k = bp->nrm; k--; ) { |
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d = hdray(ro, rd, hp, gc, hdbray(bp)[k].r); |
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if (hp->priv == &unobstr) |
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VSUM(ro, ro, rd, d); |
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else |
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d = 0.; |
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d = hddepth(hp, hdbray(bp)[k].d) - d; |
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addray(ro, rd, d, hdbray(bp)[k].v); |
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} |
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hdfreebeam(hp, bq[i]); /* free the beam */ |
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} |
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return(0); |
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} |
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|
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addholo(hdf) /* add a holodeck file */ |
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char *hdf; |
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{ |
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int fd; |
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/* open the holodeck for reading */ |
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openholo(hdf, 0); |
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fd = hdlist[noutsects]->fd; /* remember the file handle */ |
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while (hdlist[noutsects] != NULL) { /* load each section */ |
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/* clump the beams */ |
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clumpbeams(hdlist[noutsects], 0, BKBSIZE*1024, addclump); |
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hddone(hdlist[noutsects]); /* free the section */ |
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} |
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close(fd); /* close input file */ |
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hdflush(NULL); /* flush output */ |
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} |
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|
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|
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struct phead { |
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VIEW vw; |
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double expos; |
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short gotview; |
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short badfmt; |
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short altprims; |
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}; |
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|
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|
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int |
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picheadline(s, ph) /* process picture header line */ |
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char *s; |
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struct phead *ph; |
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{ |
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char fmt[32]; |
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|
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if (formatval(fmt, s)) { |
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ph->badfmt = strcmp(fmt, COLRFMT); |
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return(0); |
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} |
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if (isprims(s)) { |
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ph->altprims++; /* don't want to deal with this */ |
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return(0); |
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} |
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if (isexpos(s)) { |
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ph->expos *= exposval(s); |
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return(0); |
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} |
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if (isview(s)) { |
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ph->gotview += sscanview(&ph->vw, s); |
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return(0); |
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} |
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return(0); |
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} |
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|
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|
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addpicz(pcf, zbf) /* add a picture + depth-buffer */ |
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char *pcf, *zbf; |
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{ |
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FILE *pfp; |
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int zfd; |
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COLR *cscn; |
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float *zscn; |
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struct phead phd; |
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int eshft; |
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double emult; |
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RESOLU prs; |
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FLOAT vl[2]; |
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FVECT ro, rd; |
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double aftd; |
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COLOR ctmp; |
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int j; |
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register int i; |
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/* open files */ |
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if ((pfp = fopen(pcf, "r")) == NULL) { |
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sprintf(errmsg, "cannot open picture file \"%s\"", pcf); |
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error(SYSTEM, pcf); |
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} |
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if ((zfd = open(zbf, O_RDONLY)) < 0) { |
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sprintf(errmsg, "cannot open depth file \"%s\"", zbf); |
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error(SYSTEM, pcf); |
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} |
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/* load picture header */ |
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copystruct(&phd.vw, &stdview); |
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phd.expos = 1.0; |
320 |
phd.badfmt = phd.gotview = phd.altprims = 0; |
321 |
if (getheader(pfp, picheadline, (char *)&phd) < 0 || |
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phd.badfmt || !fgetsresolu(&prs, pfp)) { |
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sprintf(errmsg, "bad format for picture file \"%s\"", pcf); |
324 |
error(USER, errmsg); |
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} |
326 |
if (!phd.gotview || setview(&phd.vw) != NULL) { |
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sprintf(errmsg, "missing/illegal view in picture \"%s\"", |
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pcf); |
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error(USER, errmsg); |
330 |
} |
331 |
if (phd.altprims) { |
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sprintf(errmsg, "ignoring primary values in picture \"%s\"", |
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pcf); |
334 |
error(WARNING, errmsg); |
335 |
} |
336 |
/* figure out what to do about exposure */ |
337 |
if (phd.expos < 0.99 | phd.expos > 1.01) { |
338 |
emult = -log(phd.expos)/log(2.); |
339 |
eshft = emult >= 0. ? emult+.5 : emult-.5; |
340 |
emult -= (double)eshft; |
341 |
if (emult <= 0.01 & emult >= -0.01) |
342 |
emult = -1.; |
343 |
else { |
344 |
emult = 1./phd.expos; |
345 |
eshft = 0; |
346 |
} |
347 |
} else { |
348 |
emult = -1.; |
349 |
eshft = 0; |
350 |
} |
351 |
/* allocate buffers */ |
352 |
cscn = (COLR *)malloc(scanlen(&prs)*sizeof(COLR)); |
353 |
zscn = (float *)malloc(scanlen(&prs)*sizeof(float)); |
354 |
if (cscn == NULL | zscn == NULL) |
355 |
error(SYSTEM, "out of memory in addpicz"); |
356 |
/* read and process each scanline */ |
357 |
for (j = 0; j < numscans(&prs); j++) { |
358 |
i = scanlen(&prs); /* read colrs */ |
359 |
if (freadcolrs(cscn, i, pfp) < 0) { |
360 |
sprintf(errmsg, "error reading picture \"%s\"", pcf); |
361 |
error(USER, errmsg); |
362 |
} |
363 |
if (eshft) /* shift exposure */ |
364 |
shiftcolrs(cscn, i, eshft); |
365 |
i *= sizeof(float); /* read depth */ |
366 |
if (read(zfd, (char *)zscn, i) != i) { |
367 |
sprintf(errmsg, "error reading depth file \"%s\"", zbf); |
368 |
error(USER, errmsg); |
369 |
} |
370 |
for (i = scanlen(&prs); i--; ) { /* do each pixel */ |
371 |
pix2loc(vl, &prs, i, j); |
372 |
aftd = viewray(ro, rd, &phd.vw, vl[0], vl[1]); |
373 |
if (aftd < -FTINY) |
374 |
continue; /* off view */ |
375 |
if (aftd > FTINY && zscn[i] > aftd) |
376 |
continue; /* aft clipped */ |
377 |
if (emult > 0.) { /* whatta pain */ |
378 |
colr_color(ctmp, cscn[i]); |
379 |
scalecolor(ctmp, emult); |
380 |
setcolr(cscn[i], colval(ctmp,RED), |
381 |
colval(ctmp,GRN), colval(ctmp,BLU)); |
382 |
} |
383 |
addray(ro, rd, (double)zscn[i], cscn[i]); |
384 |
} |
385 |
} |
386 |
/* write output and free beams */ |
387 |
hdflush(NULL); |
388 |
/* clean up */ |
389 |
free((void *)cscn); |
390 |
free((void *)zscn); |
391 |
fclose(pfp); |
392 |
close(zfd); |
393 |
} |
394 |
|
395 |
|
396 |
void |
397 |
eputs(s) /* put error message to stderr */ |
398 |
register char *s; |
399 |
{ |
400 |
static int midline = 0; |
401 |
|
402 |
if (!*s) |
403 |
return; |
404 |
if (!midline++) { /* prepend line with program name */ |
405 |
fputs(progname, stderr); |
406 |
fputs(": ", stderr); |
407 |
} |
408 |
fputs(s, stderr); |
409 |
if (s[strlen(s)-1] == '\n') { |
410 |
fflush(stderr); |
411 |
midline = 0; |
412 |
} |
413 |
} |
414 |
|
415 |
|
416 |
void |
417 |
quit(code) /* exit the program gracefully */ |
418 |
int code; |
419 |
{ |
420 |
hdsync(NULL, 1); /* write out any buffered data */ |
421 |
exit(code); |
422 |
} |