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#endif |
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/* |
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* Holodeck beam tracking |
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* Holodeck beam tracking for display process |
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*/ |
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#include "rholo.h" |
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extern int *getviewcells(); |
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typedef struct { |
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int hd; /* holodeck section number */ |
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int hd; /* holodeck section number (-1 if inactive) */ |
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int i[3]; /* voxel index (may be outside section) */ |
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} VOXL; /* a voxel */ |
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static int xcbeams = 0; /* extra (unregistered) beams past ncbeams */ |
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static int maxcbeam = 0; /* size of cbeam array */ |
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struct cellact { |
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short vi; /* voxel index */ |
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short add; /* zero means delete */ |
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}; /* action for cell */ |
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struct beamact { |
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struct cellact ca; /* cell action */ |
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GCOORD gc; /* grid coordinate */ |
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} |
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cbeamadd(bl, n, v, hr, vr) /* add beams to server list */ |
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cbeamop(op, bl, n, v, hr, vr) /* update beams on server list */ |
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int op; |
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register struct beamcomp *bl; |
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int n; |
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VIEW *v; |
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pa = (PACKHEAD *)malloc(n*sizeof(PACKHEAD)); |
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if (pa == NULL) |
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error(SYSTEM, "out of memory in cbeamadd"); |
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for (i = 0; i < n; i++) |
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pa[i].nr = npixels(v, hr, vr, |
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hdlist[pa[i].hd=bl[i].hd], |
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pa[i].bi=bl[i].bi) / 8; |
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serv_request(DR_ADDSET, n*sizeof(PACKHEAD), (char *)pa); |
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free((char *)pa); |
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} |
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cbeamdel(bl, n) /* delete unwanted beam requests */ |
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register struct beamcomp *bl; |
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int n; |
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{ |
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register PACKHEAD *pa; |
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register int i; |
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if (n <= 0) |
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return; |
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pa = (PACKHEAD *)malloc(n*sizeof(PACKHEAD)); |
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if (pa == NULL) |
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error(SYSTEM, "out of memory in cbeamdel"); |
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for (i = 0; i < n; i++) { |
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pa[i].hd = bl[i].hd; |
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pa[i].bi = bl[i].bi; |
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pa[i].nr = 0; /* removes any request */ |
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pa[i].nr = v==NULL ? 0 : |
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npixels(v, hr, vr, hdlist[bl[i].hd], bl[i].bi); |
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} |
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serv_request(DR_DELSET, n*sizeof(PACKHEAD), (char *)pa); |
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serv_request(op, n*sizeof(PACKHEAD), (char *)pa); |
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free((char *)pa); |
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} |
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VOXL vl[8]; |
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FVECT vp; |
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{ |
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static int lastn = 0, lastd = -1; |
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int n = 0; |
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FVECT gp; |
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double d; |
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n++; |
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} |
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} |
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return(n); |
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/* warn of dangerous moves */ |
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if (n < lastn && bestd >= lastd) |
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error(WARNING, "moving outside holodeck section"); |
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else if (n > lastn && bestd <= lastd) |
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error(WARNING, "moving inside holodeck section"); |
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lastd = bestd; |
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return(lastn = n); |
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} |
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copystruct(gc, gcp); |
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copystruct(gc+1, &bp->gc); |
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if ((bi = hdbindex(hdlist[voxel[bp->ca.vi].hd], gc)) <= 0) |
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return(0); /* should report an error? */ |
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error(CONSISTENCY, "bad grid coordinate in dobeam"); |
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if (bp->ca.add) { /* add it in */ |
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i = getcbeam(voxel[bp->ca.vi].hd, bi); |
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cbeam[i].wants |= 1<<bp->ca.vi; /* say we want it */ |
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} |
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/* take care of list tails */ |
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for (ca.add = 1; ncnt > 0; ncnt--) |
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docell(ngcp++, &ca); |
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netchange += docell(ngcp++, &ca); |
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for (ca.add = 0; ocnt > 0; ocnt--) |
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docell(ogcp++, &ca); |
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netchange -= docell(ogcp++, &ca); |
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/* clean up */ |
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if (ocl != NULL) free((char *)ocl); |
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if (ncl != NULL) free((char *)ncl); |
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} |
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beam_sync() /* synchronize beams on server */ |
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{ |
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cbeamop(DR_NEWSET, cbeam, ncbeams, &odev.v, odev.hres, odev.vres); |
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} |
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|
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|
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beam_view(vo, vn) /* change beam view */ |
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VIEW *vo, *vn; |
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{ |
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if (!vn->type) { /* clear our beam list */ |
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set_voxels(vlnew, 0); |
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cbeamdel(cbeam, ncbeams); |
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cbeamop(DR_DELSET, cbeam, ncbeams, NULL, 0, 0); |
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ncbeams = 0; |
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return; |
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} |
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else /* else add all new cells */ |
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doview(&ca, vn); |
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/* inform server of new beams */ |
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cbeamadd(cbeam+ncbeams, xcbeams, vn, odev.hres, odev.vres); |
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cbeamop(DR_ADDSET, cbeam+ncbeams, xcbeams, vn, odev.hres, odev.vres); |
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/* sort list to put orphans at end */ |
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cbeamsort(0); |
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/* tell server to delete orphans */ |
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cbeamdel(cbeam+ncbeams, xcbeams); |
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cbeamop(DR_DELSET, cbeam+ncbeams, xcbeams, NULL, 0, 0); |
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xcbeams = 0; /* truncate our list */ |
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} |