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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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#define BKBSIZE 256 /* beam clump size (kilobytes) */ |
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#endif |
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|
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#define flgop(p,i,op) ((p)[(i)>>5] op (1L<<((i)&0x1f))) |
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#define isset(p,i) flgop(p,i,&) |
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#define setfl(p,i) flgop(p,i,|=) |
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#define clrfl(p,i) flgop(p,i,&=~) |
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|
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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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fclose(infp); |
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if (fclose(outfp) == EOF) |
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error(SYSTEM, "file flushing error in rhinitcopy"); |
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/* flush everything manually hence */ |
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hdcachesize = 0; |
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/* check cache size */ |
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if (BKBSIZE*1024*1.5 > hdcachesize) |
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hdcachesize = BKBSIZE*1024*1.5; |
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/* return input position */ |
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return(ifpos); |
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} |
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gcshifti(gc, ia, di, hp) /* shift cell row or column */ |
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register GCOORD *gc; |
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int ia, di; |
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register HOLO *hp; |
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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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int nw; |
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if (di > 0) { |
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if (++gc->i[ia] >= hp->grid[((gc->w>>1)+1+ia)%3]) { |
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nw = ((gc->w&~1) + (ia<<1) + 3) % 6; |
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gc->i[ia] = gc->i[1-ia]; |
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gc->i[1-ia] = gc->w&1 ? hp->grid[((nw>>1)+2-ia)%3]-1 : 0; |
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gc->w = nw; |
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} |
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} else if (di < 0) { |
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if (--gc->i[ia] < 0) { |
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nw = ((gc->w&~1) + (ia<<1) + 2) % 6; |
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gc->i[ia] = gc->i[1-ia]; |
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gc->i[1-ia] = gc->w&1 ? hp->grid[((nw>>1)+2-ia)%3]-1 : 0; |
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gc->w = nw; |
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} |
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} |
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} |
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mkneighgrid(ng, hp, gc) /* compute neighborhood for grid cell */ |
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GCOORD ng[3*3]; |
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HOLO *hp; |
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GCOORD *gc; |
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{ |
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GCOORD gci0; |
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register int i, j; |
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RAYVAL rtmp; |
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for (i = 3; i--; ) { |
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copystruct(&gci0, gc); |
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gcshifti(&gci0, 0, i-1, hp); |
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for (j = 3; j--; ) { |
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copystruct(ng+(3*i+j), &gci0); |
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gcshifti(ng+(3*i+j), gci0.w==gc->w, j-1, hp); |
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} |
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} |
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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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int bneighlist[9*9-1]; |
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int bneighrem; |
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static BEAMI *beamdir; |
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#define nextneigh() (bneighrem<=0 ? 0 : bneighlist[--bneighrem]) |
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int |
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firstneigh(hp, b) /* initialize neighbor list and return first */ |
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HOLO *hp; |
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int b; |
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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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GCOORD wg0[9], wg1[9], bgc[2]; |
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int i, j; |
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register long pdif = beamdir[*b1p].fo - beamdir[*b2p].fo; |
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hdbcoord(bgc, hp, b); |
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mkneighgrid(wg0, hp, bgc); |
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mkneighgrid(wg1, hp, bgc+1); |
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bneighrem = 0; |
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for (i = 9; i--; ) |
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for (j = 9; j--; ) { |
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if (i == 4 & j == 4) /* don't copy starting beam */ |
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continue; |
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if (wg0[i].w == wg1[j].w) |
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continue; |
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copystruct(bgc, wg0+i); |
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copystruct(bgc+1, wg1+j); |
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bneighlist[bneighrem++] = hdbindex(hp, bgc); |
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#ifdef DEBUG |
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if (bneighlist[bneighrem-1] <= 0) |
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error(CONSISTENCY, "bad beam in firstneigh"); |
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#endif |
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} |
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return(nextneigh()); |
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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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BEAMI *beamdir; |
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int |
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bpcmp(b1p, b2p) /* compare beam positions on disk */ |
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int *b1p, *b2p; |
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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 long pdif = beamdir[*b1p].fo - beamdir[*b2p].fo; |
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register int i; |
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register BEAM *bp; |
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int n; |
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if (pdif > 0L) return(1); |
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if (pdif < 0L) return(-1); |
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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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hdfreebeam(hout, 0); /* write & free clump */ |
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return(0); |
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} |
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copysect(ifd, ofd) /* copy holodeck section from ifd to ofd */ |
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int ifd, ofd; |
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{ |
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static short primes[] = {9431,6803,4177,2659,1609,887,587,251,47,1}; |
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register HOLO *hinp; |
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HOLO *hout; |
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register BEAM *bp; |
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unsigned int4 *bflags; |
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int *bqueue; |
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int bqlen; |
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int4 bqtotal; |
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int bc, bci, bqc, myprime; |
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register int i; |
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HOLO *hinp; |
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/* load input section directory */ |
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hinp = hdinit(ifd, NULL); |
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/* create output section directory */ |
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hout = hdinit(ofd, (HDGRID *)hinp); |
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/* allocate beam queue */ |
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bqueue = (int *)malloc(nbeams(hinp)*sizeof(int)); |
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bflags = (unsigned int4 *)calloc((nbeams(hinp)>>5)+1, |
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sizeof(unsigned int4)); |
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if (bqueue == NULL | bflags == NULL) |
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error(SYSTEM, "out of memory in copysect"); |
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/* mark empty beams as done */ |
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for (i = nbeams(hinp); i > 0; i--) |
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if (!hinp->bi[i].nrd) |
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setfl(bflags, i); |
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/* pick a good prime step size */ |
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for (i = 0; primes[i]<<5 >= nbeams(hinp); i++) |
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; |
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while ((myprime = primes[i++]) > 1) |
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if (nbeams(hinp) % myprime) |
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break; |
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/* add each input beam and neighbors */ |
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for (bc = bci = nbeams(hinp); bc > 0; bc--, |
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bci += bci>myprime ? -myprime : nbeams(hinp)-myprime) { |
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if (isset(bflags, bci)) |
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continue; |
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bqueue[0] = bci; /* initialize queue */ |
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bqlen = 1; |
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bqtotal = hinp->bi[bci].nrd; |
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setfl(bflags, bci); |
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/* run through growing queue */ |
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for (bqc = 0; bqc < bqlen; bqc++) { |
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/* add neighbors until full */ |
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for (i = firstneigh(hinp,bqueue[bqc]); i > 0; |
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i = nextneigh()) { |
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if (isset(bflags, i)) /* done already? */ |
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continue; |
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bqueue[bqlen++] = i; /* add it */ |
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bqtotal += hinp->bi[i].nrd; |
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setfl(bflags, i); |
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if (bqtotal >= BKBSIZE*1024/sizeof(RAYVAL)) |
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break; /* queue full */ |
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} |
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if (i > 0) |
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break; |
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} |
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beamdir = hinp->bi; /* sort queue */ |
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qsort((char *)bqueue, bqlen, sizeof(*bqueue), bpcmp); |
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/* transfer each beam */ |
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for (i = 0; i < bqlen; i++) { |
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bp = hdgetbeam(hinp, bqueue[i]); |
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bcopy((char *)hdbray(bp), |
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(char *)hdnewrays(hout,bqueue[i],bp->nrm), |
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bp->nrm*sizeof(RAYVAL)); |
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hdfreebeam(hinp, bqueue[i]); |
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} |
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hdfreebeam(hout, 0); /* flush output block */ |
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#ifdef DEBUG |
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hdsync(hout, 0); |
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#endif |
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} |
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/* we're done -- clean up */ |
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free((char *)bqueue); |
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free((char *)bflags); |
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/* clump the beams */ |
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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); |
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} |
