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/* Copyright (c) 1998 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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char *progname; |
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char tempfile[128]; |
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int dupchecking = 0; |
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extern char *rindex(); |
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extern int quit(); |
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long nextipos, lastopos, thisopos; |
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progname = argv[0]; |
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if (argc < 2 | argc > 3) { |
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fprintf(stderr, "Usage: %s input.hdk [output.hdk]\n", progname); |
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argv++; argc--; /* duplicate checking flag? */ |
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if (argc > 1 && !strcmp(argv[0], "-u")) { |
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dupchecking++; |
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argv++; argc--; |
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} |
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if (argc < 1 | argc > 2) { |
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fprintf(stderr, "Usage: %s [-u] input.hdk [output.hdk]\n", |
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progname); |
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exit(1); |
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} |
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inpname = argv[1]; |
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if (argc == 3) /* use given output file */ |
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outname = argv[2]; |
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inpname = argv[0]; /* get input file */ |
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argv++; argc--; |
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if (argc == 1) /* use given output file */ |
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outname = argv[0]; |
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else { /* else use temporary file */ |
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if (access(inpname, R_OK|W_OK) < 0) { /* check permissions */ |
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sprintf(errmsg, "cannot access \"%s\"", inpname); |
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} |
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static HOLO *hout; /* output holodeck section */ |
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int |
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nuniq(rva, n) /* sort unique rays to front of beam list */ |
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register RAYVAL *rva; |
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int n; |
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{ |
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register int i, j; |
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RAYVAL rtmp; |
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for (j = 0; j < n; j++) |
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for (i = j+1; i < n; i++) |
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if ( rva[i].d == rva[j].d && |
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rva[i].r[0][0]==rva[j].r[0][0] && |
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rva[i].r[0][1]==rva[j].r[0][1] && |
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rva[i].r[1][0]==rva[j].r[1][0] && |
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rva[i].r[1][1]==rva[j].r[1][1] ) { |
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n--; /* swap duplicate with end */ |
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copystruct(&rtmp, rva+n); |
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copystruct(rva+n, rva+i); |
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copystruct(rva+i, &rtmp); |
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i--; /* recheck one we swapped */ |
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} |
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return(n); |
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} |
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static BEAMI *beamdir; |
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static int |
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xferbeam(bp, hb) /* transfer the given beam to hout and free */ |
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register BEAM *bp; |
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HDBEAMI *hb; |
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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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bcopy((char *)hdbray(bp), (char *)hdnewrays(hout,hb->b,bp->nrm), |
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bp->nrm*sizeof(RAYVAL)); |
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hdfreebeam(hb->h, hb->b); |
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register long pdif = beamdir[*b1p].fo - beamdir[*b2p].fo; |
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if (pdif < 0L) return(-1); |
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return(pdif > 0L); |
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} |
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static HOLO *hout; |
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static int |
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xferclump(hp, bq, nb) /* transfer the given clump to hout and free */ |
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HOLO *hp; |
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int *bq, nb; |
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{ |
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register int i; |
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register BEAM *bp; |
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int n; |
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beamdir = hp->bi; /* sort based on file position */ |
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qsort((char *)bq, nb, sizeof(*bq), bpcmp); |
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/* transfer and free 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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DCHECK(bp==NULL, CONSISTENCY, "empty beam in xferclump"); |
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n = dupchecking ? nuniq(hdbray(bp),bp->nrm) : bp->nrm; |
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bcopy((char *)hdbray(bp), (char *)hdnewrays(hout,bq[i],n), |
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n*sizeof(RAYVAL)); |
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hdfreebeam(hp, bq[i]); |
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} |
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hdflush(hout); /* write & free clump */ |
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return(0); |
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} |
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/* create output section directory */ |
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hout = hdinit(ofd, (HDGRID *)hinp); |
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/* clump the beams */ |
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clumpbeams(hinp, 0, BKBSIZE*1024, xferbeam); |
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clumpbeams(hinp, 0, BKBSIZE*1024, xferclump); |
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/* clean up */ |
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hddone(hinp); |
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hddone(hout); |
