14 |
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15 |
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extern GCOORD *getviewcells(); |
16 |
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17 |
+ |
static VIEW dvw; /* current view corresponding to beam list */ |
18 |
+ |
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19 |
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typedef struct { |
20 |
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int hd; /* holodeck section number (-1 if inactive) */ |
21 |
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int i[3]; /* voxel index (may be outside section) */ |
363 |
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struct cellact oca, nca; |
364 |
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int ocnt, ncnt; |
365 |
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int c; |
366 |
+ |
GCOORD *ogcl, *ngcl; |
367 |
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register GCOORD *ogcp, *ngcp; |
368 |
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/* get old and new cell lists */ |
369 |
< |
ogcp = getviewcells(&ocnt, hdlist[voxel[voxi].hd], vold); |
370 |
< |
ngcp = getviewcells(&ncnt, hdlist[voxel[voxi].hd], vnew); |
369 |
> |
ogcp = ogcl = getviewcells(&ocnt, hdlist[voxel[voxi].hd], vold); |
370 |
> |
ngcp = ngcl = getviewcells(&ncnt, hdlist[voxel[voxi].hd], vnew); |
371 |
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/* set up actions */ |
372 |
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oca.vi = nca.vi = voxi; |
373 |
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oca.rev = nca.rev = 0; |
376 |
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ocnt = -ocnt; |
377 |
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if ((nca.rev = ncnt < 0)) |
378 |
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ncnt = -ncnt; |
379 |
< |
/* add and delete cells in order */ |
380 |
< |
while (ocnt > 0 & ncnt > 0) |
381 |
< |
if ((c = cellcmp(ogcp, ngcp)) > 0) { /* new cell */ |
382 |
< |
netchange += docell(ngcp++, &nca); |
383 |
< |
ncnt--; |
384 |
< |
} else if (c < 0) { /* obsolete cell */ |
385 |
< |
netchange -= docell(ogcp++, &oca); |
386 |
< |
ocnt--; |
387 |
< |
} else { /* same cell? */ |
388 |
< |
if (oca.rev != nca.rev) /* not */ |
389 |
< |
netchange += docell(ngcp, &nca) - |
390 |
< |
docell(ogcp, &oca); |
388 |
< |
ogcp++; ocnt--; |
389 |
< |
ngcp++; ncnt--; |
390 |
< |
} |
379 |
> |
if (nca.rev == oca.rev) /* add and delete cells in order */ |
380 |
> |
while (ocnt > 0 & ncnt > 0) |
381 |
> |
if ((c = cellcmp(ogcp, ngcp)) > 0) { /* new cell */ |
382 |
> |
netchange += docell(ngcp++, &nca); |
383 |
> |
ncnt--; |
384 |
> |
} else if (c < 0) { /* old cell */ |
385 |
> |
netchange -= docell(ogcp++, &oca); |
386 |
> |
ocnt--; |
387 |
> |
} else { /* same cell */ |
388 |
> |
ogcp++; ocnt--; |
389 |
> |
ngcp++; ncnt--; |
390 |
> |
} |
391 |
|
/* take care of list tails */ |
392 |
|
for ( ; ncnt > 0; ncnt--) |
393 |
|
netchange += docell(ngcp++, &nca); |
394 |
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for ( ; ocnt > 0; ocnt--) |
395 |
|
netchange -= docell(ogcp++, &oca); |
396 |
|
/* clean up */ |
397 |
< |
if (ogcp != NULL) free((char *)ogcp); |
398 |
< |
if (ngcp != NULL) free((char *)ngcp); |
397 |
> |
if (ogcl != NULL) free((char *)ogcl); |
398 |
> |
if (ngcl != NULL) free((char *)ngcl); |
399 |
|
return(netchange); |
400 |
|
} |
401 |
|
|
406 |
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} |
407 |
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|
408 |
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|
409 |
< |
beam_view(vo, vn) /* change beam view */ |
410 |
< |
VIEW *vo, *vn; |
409 |
> |
beam_view(vn) /* change beam view */ |
410 |
> |
VIEW *vn; |
411 |
|
{ |
412 |
|
struct cellact ca; |
413 |
|
VOXL vlnew[8]; |
417 |
|
set_voxels(vlnew, 0); |
418 |
|
cbeamop(DR_DELSET, cbeam, ncbeams, NULL, 0, 0); |
419 |
|
ncbeams = 0; |
420 |
+ |
copystruct(&dvw, vn); |
421 |
|
return; |
422 |
|
} |
423 |
|
/* find our new voxels */ |
424 |
|
n = get_voxels(vlnew, vn->vp); |
425 |
|
/* set the new voxels */ |
426 |
|
comn = set_voxels(vlnew, n); |
427 |
< |
if (!vo->type) |
427 |
> |
if (!dvw.type) |
428 |
|
comn = 0; |
429 |
|
ca.add = 1; /* update our beam list */ |
430 |
|
for (ca.vi = n; ca.vi--; ) |
431 |
|
if (comn & 1<<ca.vi) /* change which cells we see */ |
432 |
< |
mvview(ca.vi, vo, vn); |
432 |
> |
mvview(ca.vi, &dvw, vn); |
433 |
|
else /* else add all new cells */ |
434 |
|
doview(&ca, vn); |
435 |
|
/* inform server of new beams */ |
439 |
|
/* tell server to delete orphans */ |
440 |
|
cbeamop(DR_DELSET, cbeam+ncbeams, xcbeams, NULL, 0, 0); |
441 |
|
xcbeams = 0; /* truncate our list */ |
442 |
+ |
copystruct(&dvw, vn); /* record new view */ |
443 |
|
} |