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/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
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/* Copyright (c) 1999 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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#include "view.h" |
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#include "resolu.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 (!-f option)? */ |
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int checkrepeats = 0; /* check for repeats (-c 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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int obstructions = -1; /* interior obstructions allowed? */ |
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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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int i; |
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|
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progname = argv[0]; |
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if (argc < 4) |
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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 (!strcmp(argv[2], "-h")) |
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frompicz = 0; |
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else if (!strcmp(argv[2], "-pz")) |
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frompicz = 1; |
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else |
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if (frompicz && (argc-i)%2) |
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goto userr; |
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if (frompicz && (argc-3)%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 = 3; i < argc; i += 2) |
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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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for (i = 3; i < argc; i++) |
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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 -h inp1.hdk ..\n", progname); |
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fprintf(stderr, " Or: %s output.hdk -pz inp1.pic inp1.zbf ..\n", |
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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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holheadline(s, bf) /* check holodeck header line */ |
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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 *bf; |
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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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*bf = strcmp(fmt, HOLOFMT); |
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return; |
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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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obstructions = 1; |
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*hf |= H_OBST; |
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else if (*s == 'f' | *s == 'F') |
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obstructions = 0; |
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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; |
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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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extern long ftell(); |
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FILE *fp; |
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int fd; |
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int badfmt = 0; |
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int4 nextloc; |
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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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error(SYSTEM, errmsg); |
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} |
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/* check header and magic number */ |
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if (append) |
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badfmt |= getheader(fp, holheadline, &badfmt) < 0; |
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else |
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badfmt = checkheader(fp, HOLOFMT, NULL) < 0; |
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if (badfmt || getw(fp) != HOLOMAGIC) { |
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if (getheader(fp, holheadline, &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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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, (long)nextloc, 0); |
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lseek(fd, nextloc, 0); |
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read(fd, (char *)&nextloc, sizeof(nextloc)); |
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hdinit(fd, NULL); |
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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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#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; |
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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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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 (obstructions > 0 && d0 < -0.001) |
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continue; /* ray starts too late */ |
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if (!obstructions && d < 0.999*d1) |
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continue; /* ray ends too soon */ |
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/* should we check for duplicates? */ |
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rv = hdnewrays(hp, hdbindex(hp, gc), 1); |
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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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rv->d = hdcode(hp, d-d0); |
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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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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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int fd; |
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register HOLO *hp; |
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register BEAM *bp; |
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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, j; |
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int i; |
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register int k; |
219 |
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register BEAM *bp; |
220 |
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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 */ |
224 |
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for (i = 0; i < nb; i++) { |
225 |
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bp = hdgetbeam(hp, bq[i]); |
226 |
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hdbcoord(gc, hp, bq[i]); |
227 |
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/* add each ray to output */ |
228 |
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for (k = bp->nrm; k--; ) { |
229 |
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d = hdray(ro, rd, hp, gc, hdbray(bp)[k].r); |
230 |
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if (hp->priv == &unobstr) |
231 |
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VSUM(ro, ro, rd, d); |
232 |
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else |
233 |
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d = 0.; |
234 |
+ |
d = hddepth(hp, hdbray(bp)[k].d) - d; |
235 |
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addray(ro, rd, d, hdbray(bp)[k].v); |
236 |
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} |
237 |
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hdfreebeam(hp, bq[i]); /* free the beam */ |
238 |
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} |
239 |
+ |
hdflush(NULL); /* write & free clump */ |
240 |
+ |
return(0); |
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} |
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|
243 |
< |
openholo(hdf, 0); /* open the holodeck for reading */ |
243 |
> |
addholo(hdf) /* add a holodeck file */ |
244 |
> |
char *hdf; |
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> |
{ |
246 |
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int fd; |
247 |
> |
/* open the holodeck for reading */ |
248 |
> |
openholo(hdf, 0); |
249 |
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fd = hdlist[noutsects]->fd; /* remember the file handle */ |
250 |
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while ((hp = hdlist[noutsects]) != NULL) { /* load each section */ |
251 |
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for (j = nbeams(hp); j > 0; j--) /* load each beam */ |
252 |
< |
if ((bp = hdgetbeam(hp, j)) != NULL) { |
253 |
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hdbcoord(gc, hp, j); |
166 |
< |
for (k = bp->nrm; k--; ) { |
167 |
< |
hdray(ro, rd, hp, gc, hdbray(bp)[k].r); |
168 |
< |
d = hddepth(hp, hdbray(bp)[k].d); |
169 |
< |
addray(ro, rd, d, hdbray(bp)[k].v); |
170 |
< |
} |
171 |
< |
hdfreebeam(hp, j); /* free the beam */ |
172 |
< |
} |
173 |
< |
hddone(hp); /* free the section */ |
250 |
> |
while (hdlist[noutsects] != NULL) { /* load each section */ |
251 |
> |
/* clump the beams */ |
252 |
> |
clumpbeams(hdlist[noutsects], 0, BKBSIZE*1024, addclump); |
253 |
> |
hddone(hdlist[noutsects]); /* free the section */ |
254 |
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} |
255 |
< |
close(fd); /* close the file */ |
255 |
> |
close(fd); /* close input file */ |
256 |
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} |
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265 |
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}; |
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|
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+ |
int |
269 |
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picheadline(s, ph) /* process picture header line */ |
270 |
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char *s; |
271 |
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struct phead *ph; |
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|
275 |
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if (formatval(fmt, s)) { |
276 |
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ph->badfmt = strcmp(fmt, COLRFMT); |
277 |
< |
return; |
277 |
> |
return(0); |
278 |
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} |
279 |
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if (isprims(s)) { |
280 |
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ph->altprims++; /* don't want to deal with this */ |
281 |
< |
return; |
281 |
> |
return(0); |
282 |
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} |
283 |
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if (isexpos(s)) { |
284 |
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ph->expos *= exposval(s); |
285 |
< |
return; |
285 |
> |
return(0); |
286 |
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} |
287 |
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if (isview(s)) { |
288 |
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ph->gotview += sscanview(&ph->vw, s); |
289 |
< |
return; |
289 |
> |
return(0); |
290 |
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} |
291 |
+ |
return(0); |
292 |
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} |
293 |
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|
294 |
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|
387 |
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addray(ro, rd, (double)zscn[i], cscn[i]); |
388 |
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} |
389 |
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} |
390 |
+ |
/* write output and free beams */ |
391 |
+ |
hdflush(NULL); |
392 |
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/* clean up */ |
393 |
|
free((char *)cscn); |
394 |
|
free((char *)zscn); |