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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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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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#include "holo.h" |
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#include "view.h" |
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#include "resolu.h" |
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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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int checkdepth = 1; /* check depth (!-f option)? */ |
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int checkrepeats = 0; /* check for repeats (-c option)? */ |
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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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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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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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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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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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error(SYSTEM, errmsg); |
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} |
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/* check header and magic number */ |
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if (getheader(fp, holheadline, &hflags) < 0 || |
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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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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, nextloc, 0); |
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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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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 (rv->d == dc && |
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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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} |
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addbeam(bp, hb) /* add a beam to our output holodeck */ |
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register BEAM *bp; |
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register HDBEAMI *hb; |
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static BEAMI *beamdir; |
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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 off_t pdif = beamdir[*b1p].fo - beamdir[*b2p].fo; |
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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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/* get beam coordinates */ |
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hdbcoord(gc, hb->h, hb->b); |
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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, hb->h, gc, hdbray(bp)[k].r); |
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if (hb->h->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(hb->h, hdbray(bp)[k].d) - d; |
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addray(ro, rd, d, hdbray(bp)[k].v); |
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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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hdfreebeam(hb->h, hb->b); /* free the beam */ |
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return(0); |
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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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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, addbeam); |
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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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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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RREAL 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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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.vw = stdview; |
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phd.expos = 1.0; |
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phd.badfmt = phd.gotview = phd.altprims = 0; |
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if (getheader(pfp, picheadline, &phd) < 0 || |
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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); |
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error(USER, errmsg); |
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error(WARNING, errmsg); |
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} |
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/* figure out what to do about exposure */ |
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if (phd.expos < 0.99 | phd.expos > 1.01) { |
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if ((phd.expos < 0.99) | (phd.expos > 1.01)) { |
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emult = -log(phd.expos)/log(2.); |
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eshft = emult >= 0. ? emult+.5 : emult-.5; |
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emult -= (double)eshft; |
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if (emult <= 0.01 & emult >= -0.01) |
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if ((emult <= 0.01) & (emult >= -0.01)) |
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emult = -1.; |
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else { |
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emult = 1./phd.expos; |
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/* allocate buffers */ |
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cscn = (COLR *)malloc(scanlen(&prs)*sizeof(COLR)); |
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zscn = (float *)malloc(scanlen(&prs)*sizeof(float)); |
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if (cscn == NULL | zscn == NULL) |
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if ((cscn == NULL) | (zscn == NULL)) |
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error(SYSTEM, "out of memory in addpicz"); |
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/* read and process each scanline */ |
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for (j = 0; j < numscans(&prs); j++) { |
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addray(ro, rd, (double)zscn[i], cscn[i]); |
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} |
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} |
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/* write output */ |
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hdsync(NULL, 1); |
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/* write output and free beams */ |
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hdflush(NULL); |
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/* clean up */ |
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free((char *)cscn); |
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free((char *)zscn); |
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free((void *)cscn); |
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free((void *)zscn); |
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fclose(pfp); |
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close(zfd); |
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} |
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void |
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eputs(s) /* put error message to stderr */ |
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register char *s; |
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{ |
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} |
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void |
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quit(code) /* exit the program gracefully */ |
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int code; |
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{ |
