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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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* Bundle holodeck beams together into clumps. |
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*/ |
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#define nextneigh() (bneighrem<=0 ? 0 : bneighlist[--bneighrem]) |
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static BEAMI *beamdir; |
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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 int i, j; |
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for (i = 3; i--; ) { |
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copystruct(&gci0, gc); |
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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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*(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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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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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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*bgc = *(wg0+i); |
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*(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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} |
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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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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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clumpbeams(hp, maxcnt, maxsiz, bf) /* clump beams from hinp */ |
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clumpbeams(hp, maxcnt, maxsiz, cf) /* clump beams from hinp */ |
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register HOLO *hp; |
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int maxcnt, maxsiz; |
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int (*bf)(); |
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int (*cf)(); |
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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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HDBEAMI bis; |
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BEAM *bp; |
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unsigned int4 *bflags; |
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uint32 *bflags; |
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int *bqueue; |
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int bqlen; |
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int4 bqtotal; |
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int32 bqtotal; |
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int bc, bci, bqc, myprime; |
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register int i; |
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/* get clump size */ |
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maxsiz /= sizeof(RAYVAL); |
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/* allocate beam queue */ |
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bqueue = (int *)malloc(maxcnt*sizeof(int)); |
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bflags = (unsigned int4 *)calloc((nbeams(hp)>>5)+1, |
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sizeof(unsigned int4)); |
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if (bqueue == NULL | bflags == NULL) |
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bflags = (uint32 *)calloc((nbeams(hp)>>5)+1, |
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sizeof(uint32)); |
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if ((bqueue == NULL) | (bflags == NULL)) |
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error(SYSTEM, "out of memory in clumpbeams"); |
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/* mark empty beams as done */ |
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for (i = nbeams(hp); i > 0; i--) |
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if (i > 0) |
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break; |
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} |
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beamdir = hp->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(bis.h=hp, bis.b=bqueue[i]); |
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(*bf)(bp, &bis); |
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} |
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hdfreebeam(NULL, 0); /* write & free clump */ |
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(*cf)(hp, bqueue, bqlen); /* transfer clump */ |
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} |
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hdsync(NULL, 0); /* we're done -- clean up */ |
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free((char *)bqueue); |
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free((char *)bflags); |
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/* all done; clean up */ |
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free((void *)bqueue); |
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free((void *)bflags); |
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} |
