12 |
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#include "rhdisp.h" |
13 |
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#include "rhdriver.h" |
14 |
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|
15 |
< |
extern int *getviewcells(); |
15 |
> |
#ifndef MAXDIST |
16 |
> |
#define MAXDIST 13 /* maximum distance outside section */ |
17 |
> |
#endif |
18 |
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|
19 |
+ |
extern GCOORD *getviewcells(); |
20 |
+ |
|
21 |
+ |
static VIEW dvw; /* current view corresponding to beam list */ |
22 |
+ |
|
23 |
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typedef struct { |
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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) */ |
45 |
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struct cellact { |
46 |
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short vi; /* voxel index */ |
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short add; /* zero means delete */ |
48 |
+ |
short rev; /* reverse ray direction? */ |
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}; /* action for cell */ |
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|
51 |
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struct beamact { |
162 |
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} |
163 |
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|
164 |
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|
165 |
+ |
cbeamadj(v, hr, vr) /* adjust our beam list */ |
166 |
+ |
VIEW *v; |
167 |
+ |
int hr, vr; |
168 |
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{ |
169 |
+ |
register PACKHEAD *pa; |
170 |
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register int i; |
171 |
+ |
int n; |
172 |
+ |
/* first handle additions */ |
173 |
+ |
pa = (PACKHEAD *)malloc(xcbeams*sizeof(PACKHEAD)); |
174 |
+ |
if (xcbeams && pa == NULL) |
175 |
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goto memerr; |
176 |
+ |
for (i = xcbeams; i--; ) { |
177 |
+ |
pa[i].hd = cbeam[ncbeams+i].hd; |
178 |
+ |
pa[i].bi = cbeam[ncbeams+i].bi; |
179 |
+ |
pa[i].nr = npixels(v, hr, vr, hdlist[pa[i].hd], pa[i].bi); |
180 |
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} |
181 |
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n = xcbeams; /* now sort list for deletions */ |
182 |
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cbeamsort(0); |
183 |
+ |
pa = (PACKHEAD *)realloc((char *)pa, (n+xcbeams)*sizeof(PACKHEAD)); |
184 |
+ |
if (n+xcbeams && pa == NULL) |
185 |
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goto memerr; |
186 |
+ |
for (i = xcbeams; i--; ) { |
187 |
+ |
pa[n+i].hd = cbeam[ncbeams+i].hd; |
188 |
+ |
pa[n+i].bi = cbeam[ncbeams+i].bi; |
189 |
+ |
pa[n+i].nr = 0; |
190 |
+ |
} |
191 |
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n += xcbeams; |
192 |
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xcbeams = 0; /* delete orphans */ |
193 |
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serv_request(DR_ADJSET, n*sizeof(PACKHEAD), (char *)pa); |
194 |
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free((char *)pa); |
195 |
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return; |
196 |
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memerr: |
197 |
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error(SYSTEM, "out of memory in cbeamadj"); |
198 |
+ |
} |
199 |
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|
200 |
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|
201 |
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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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n++; |
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} |
301 |
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} |
302 |
+ |
/* check for really stupid move */ |
303 |
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if (bestd > MAXDIST) { |
304 |
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error(WARNING, "move to outer solar system"); |
305 |
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return(0); |
306 |
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} |
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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"); |
322 |
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GCOORD gc[2]; |
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int bi, i; |
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/* compute beam index */ |
325 |
< |
copystruct(gc, gcp); |
326 |
< |
copystruct(gc+1, &bp->gc); |
325 |
> |
if (bp->ca.rev) { |
326 |
> |
copystruct(gc, &bp->gc); |
327 |
> |
copystruct(gc+1, gcp); |
328 |
> |
} else { |
329 |
> |
copystruct(gc, gcp); |
330 |
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copystruct(gc+1, &bp->gc); |
331 |
> |
} |
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if ((bi = hdbindex(hdlist[voxel[bp->ca.vi].hd], gc)) <= 0) |
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error(CONSISTENCY, "bad grid coordinate in dobeam"); |
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if (bp->ca.add) { /* add it in */ |
388 |
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struct cellact *cap; |
389 |
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VIEW *vp; |
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{ |
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+ |
int orient; |
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FVECT org, dir[4]; |
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/* compute view pyramid */ |
394 |
< |
if (vp->type == VT_PAR) goto viewerr; |
395 |
< |
if (viewray(org, dir[0], vp, 0., 0.) < -FTINY) goto viewerr; |
396 |
< |
if (viewray(org, dir[1], vp, 0., 1.) < -FTINY) goto viewerr; |
397 |
< |
if (viewray(org, dir[2], vp, 1., 1.) < -FTINY) goto viewerr; |
344 |
< |
if (viewray(org, dir[3], vp, 1., 0.) < -FTINY) goto viewerr; |
394 |
> |
orient = viewpyramid(org, dir, hdlist[voxel[cap->vi].hd], vp); |
395 |
> |
if (!orient) |
396 |
> |
error(INTERNAL, "unusable view in doview"); |
397 |
> |
cap->rev = orient < 0; |
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/* visit cells within pyramid */ |
399 |
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return(visit_cells(org, dir, hdlist[voxel[cap->vi].hd], docell, cap)); |
347 |
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viewerr: |
348 |
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error(INTERNAL, "unusable view in doview"); |
400 |
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} |
401 |
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|
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|
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VIEW *vold, *vnew; |
406 |
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{ |
407 |
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int netchange = 0; |
408 |
< |
int *ocl, *ncl; |
358 |
< |
struct cellact ca; |
408 |
> |
struct cellact oca, nca; |
409 |
|
int ocnt, ncnt; |
410 |
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int c; |
411 |
+ |
GCOORD *ogcl, *ngcl; |
412 |
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register GCOORD *ogcp, *ngcp; |
413 |
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/* get old and new cell lists */ |
414 |
< |
ocl = getviewcells(hdlist[voxel[voxi].hd], vold); |
415 |
< |
ncl = getviewcells(hdlist[voxel[voxi].hd], vnew); |
416 |
< |
if (ocl != NULL) { |
417 |
< |
ocnt = *ocl; ogcp = (GCOORD *)(ocl+1); |
418 |
< |
} else { |
419 |
< |
ocnt = 0; ogcp = NULL; |
420 |
< |
} |
421 |
< |
if (ncl != NULL) { |
422 |
< |
ncnt = *ncl; ngcp = (GCOORD *)(ncl+1); |
423 |
< |
} else { |
424 |
< |
ncnt = 0; ngcp = NULL; |
425 |
< |
} |
426 |
< |
ca.vi = voxi; /* add and delete cells */ |
427 |
< |
while (ocnt > 0 & ncnt > 0) |
428 |
< |
if ((c = cellcmp(ogcp, ngcp)) > 0) { |
429 |
< |
ca.add = 1; /* new cell */ |
430 |
< |
netchange += docell(ngcp++, &ca); |
431 |
< |
ncnt--; |
432 |
< |
} else if (c < 0) { |
433 |
< |
ca.add = 0; /* obsolete cell */ |
434 |
< |
netchange -= docell(ogcp++, &ca); |
435 |
< |
ocnt--; |
385 |
< |
} else { |
386 |
< |
ogcp++; ocnt--; /* unchanged cell */ |
387 |
< |
ngcp++; ncnt--; |
388 |
< |
} |
414 |
> |
ogcp = ogcl = getviewcells(&ocnt, hdlist[voxel[voxi].hd], vold); |
415 |
> |
ngcp = ngcl = getviewcells(&ncnt, hdlist[voxel[voxi].hd], vnew); |
416 |
> |
/* set up actions */ |
417 |
> |
oca.vi = nca.vi = voxi; |
418 |
> |
oca.rev = nca.rev = 0; |
419 |
> |
oca.add = 0; nca.add = 1; |
420 |
> |
if ((oca.rev = ocnt < 0)) |
421 |
> |
ocnt = -ocnt; |
422 |
> |
if ((nca.rev = ncnt < 0)) |
423 |
> |
ncnt = -ncnt; |
424 |
> |
if (nca.rev == oca.rev) /* add and delete cells in order */ |
425 |
> |
while (ocnt > 0 & ncnt > 0) |
426 |
> |
if ((c = cellcmp(ogcp, ngcp)) > 0) { /* new cell */ |
427 |
> |
netchange += docell(ngcp++, &nca); |
428 |
> |
ncnt--; |
429 |
> |
} else if (c < 0) { /* old cell */ |
430 |
> |
netchange -= docell(ogcp++, &oca); |
431 |
> |
ocnt--; |
432 |
> |
} else { /* same cell */ |
433 |
> |
ogcp++; ocnt--; |
434 |
> |
ngcp++; ncnt--; |
435 |
> |
} |
436 |
|
/* take care of list tails */ |
437 |
< |
for (ca.add = 1; ncnt > 0; ncnt--) |
438 |
< |
netchange += docell(ngcp++, &ca); |
439 |
< |
for (ca.add = 0; ocnt > 0; ocnt--) |
440 |
< |
netchange -= docell(ogcp++, &ca); |
437 |
> |
for ( ; ncnt > 0; ncnt--) |
438 |
> |
netchange += docell(ngcp++, &nca); |
439 |
> |
for ( ; ocnt > 0; ocnt--) |
440 |
> |
netchange -= docell(ogcp++, &oca); |
441 |
|
/* clean up */ |
442 |
< |
if (ocl != NULL) free((char *)ocl); |
443 |
< |
if (ncl != NULL) free((char *)ncl); |
442 |
> |
if (ogcl != NULL) free((char *)ogcl); |
443 |
> |
if (ngcl != NULL) free((char *)ngcl); |
444 |
|
return(netchange); |
445 |
|
} |
446 |
|
|
451 |
|
} |
452 |
|
|
453 |
|
|
454 |
< |
beam_view(vo, vn) /* change beam view */ |
455 |
< |
VIEW *vo, *vn; |
454 |
> |
beam_view(vn) /* change beam view (if advisable) */ |
455 |
> |
VIEW *vn; |
456 |
|
{ |
457 |
|
struct cellact ca; |
458 |
|
VOXL vlnew[8]; |
462 |
|
set_voxels(vlnew, 0); |
463 |
|
cbeamop(DR_DELSET, cbeam, ncbeams, NULL, 0, 0); |
464 |
|
ncbeams = 0; |
465 |
< |
return; |
465 |
> |
copystruct(&dvw, vn); |
466 |
> |
return(1); |
467 |
|
} |
468 |
|
/* find our new voxels */ |
469 |
|
n = get_voxels(vlnew, vn->vp); |
470 |
+ |
if (dvw.type && !n) { |
471 |
+ |
copystruct(vn, &dvw); /* cancel move */ |
472 |
+ |
return(0); |
473 |
+ |
} |
474 |
|
/* set the new voxels */ |
475 |
|
comn = set_voxels(vlnew, n); |
476 |
< |
if (!vo->type) |
476 |
> |
if (!dvw.type) |
477 |
|
comn = 0; |
478 |
|
ca.add = 1; /* update our beam list */ |
479 |
|
for (ca.vi = n; ca.vi--; ) |
480 |
|
if (comn & 1<<ca.vi) /* change which cells we see */ |
481 |
< |
mvview(ca.vi, vo, vn); |
481 |
> |
mvview(ca.vi, &dvw, vn); |
482 |
|
else /* else add all new cells */ |
483 |
|
doview(&ca, vn); |
484 |
+ |
#if 1 |
485 |
+ |
cbeamadj(vn, odev.hres, odev.vres); |
486 |
+ |
#else |
487 |
|
/* inform server of new beams */ |
488 |
|
cbeamop(DR_ADDSET, cbeam+ncbeams, xcbeams, vn, odev.hres, odev.vres); |
489 |
|
/* sort list to put orphans at end */ |
491 |
|
/* tell server to delete orphans */ |
492 |
|
cbeamop(DR_DELSET, cbeam+ncbeams, xcbeams, NULL, 0, 0); |
493 |
|
xcbeams = 0; /* truncate our list */ |
494 |
+ |
#endif |
495 |
+ |
copystruct(&dvw, vn); /* record new view */ |
496 |
+ |
return(1); |
497 |
|
} |