12 |
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#include "rhdisp.h" |
13 |
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#include "rhdriver.h" |
14 |
|
|
15 |
+ |
#ifndef MAXDIST |
16 |
+ |
#define MAXDIST 42 /* maximum distance outside section */ |
17 |
+ |
#endif |
18 |
+ |
|
19 |
|
extern GCOORD *getviewcells(); |
20 |
|
|
21 |
+ |
static VIEW dvw; /* current view corresponding to beam list */ |
22 |
+ |
|
23 |
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typedef struct { |
24 |
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int hd; /* holodeck section number (-1 if inactive) */ |
25 |
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int i[3]; /* voxel index (may be outside section) */ |
94 |
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|
95 |
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if (!cb1->wants) /* put orphans at the end, unsorted */ |
96 |
|
return(cb2->wants); |
97 |
+ |
if (!cb2->wants) |
98 |
+ |
return(-1); |
99 |
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if ((c = cb1->bi - cb2->bi)) /* sort on beam index first */ |
100 |
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return(c); |
101 |
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return(cb1->hd - cb2->hd); /* use hd to resolve matches */ |
164 |
|
} |
165 |
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|
166 |
|
|
167 |
+ |
cbeamadj(v, hr, vr) /* adjust our beam list */ |
168 |
+ |
VIEW *v; |
169 |
+ |
int hr, vr; |
170 |
+ |
{ |
171 |
+ |
register PACKHEAD *pa; |
172 |
+ |
register int i; |
173 |
+ |
int n; |
174 |
+ |
/* first handle additions */ |
175 |
+ |
pa = (PACKHEAD *)malloc(xcbeams*sizeof(PACKHEAD)); |
176 |
+ |
if (xcbeams && pa == NULL) |
177 |
+ |
goto memerr; |
178 |
+ |
for (i = xcbeams; i--; ) { |
179 |
+ |
pa[i].hd = cbeam[ncbeams+i].hd; |
180 |
+ |
pa[i].bi = cbeam[ncbeams+i].bi; |
181 |
+ |
pa[i].nr = npixels(v, hr, vr, hdlist[pa[i].hd], pa[i].bi) + 1; |
182 |
+ |
} |
183 |
+ |
n = xcbeams; /* now sort list for deletions */ |
184 |
+ |
cbeamsort(0); |
185 |
+ |
pa = (PACKHEAD *)realloc((char *)pa, (n+xcbeams)*sizeof(PACKHEAD)); |
186 |
+ |
if (n+xcbeams && pa == NULL) |
187 |
+ |
goto memerr; |
188 |
+ |
for (i = xcbeams; i--; ) { |
189 |
+ |
pa[n+i].hd = cbeam[ncbeams+i].hd; |
190 |
+ |
pa[n+i].bi = cbeam[ncbeams+i].bi; |
191 |
+ |
pa[n+i].nr = 0; |
192 |
+ |
} |
193 |
+ |
n += xcbeams; |
194 |
+ |
xcbeams = 0; /* delete orphans */ |
195 |
+ |
serv_request(DR_ADJSET, n*sizeof(PACKHEAD), (char *)pa); |
196 |
+ |
free((char *)pa); |
197 |
+ |
return; |
198 |
+ |
memerr: |
199 |
+ |
error(SYSTEM, "out of memory in cbeamadj"); |
200 |
+ |
} |
201 |
+ |
|
202 |
+ |
|
203 |
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cbeamop(op, bl, n, v, hr, vr) /* update beams on server list */ |
204 |
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int op; |
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register struct beamcomp *bl; |
301 |
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n++; |
302 |
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} |
303 |
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} |
304 |
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/* check for really stupid move */ |
305 |
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if (bestd > MAXDIST) { |
306 |
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error(COMMAND, "move past outer limits"); |
307 |
+ |
return(0); |
308 |
+ |
} |
309 |
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/* warn of dangerous moves */ |
310 |
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if (n < lastn && bestd >= lastd) |
311 |
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error(WARNING, "moving outside holodeck section"); |
354 |
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GCOORD *gcp; |
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register struct cellact *cap; |
356 |
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{ |
357 |
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register HOLO *hp = hdlist[voxel[cap->vi].hd]; |
358 |
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FVECT org, dir[4]; |
359 |
< |
FVECT gp, cv[4], vc; |
359 |
> |
FVECT vgp, cgp, vc; |
360 |
> |
FVECT v1, v2; |
361 |
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struct beamact bo; |
362 |
+ |
int axmax, j; |
363 |
+ |
double d, avmax; |
364 |
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register int i; |
365 |
< |
/* compute cell vertices */ |
366 |
< |
hdcell(cv, hdlist[voxel[cap->vi].hd], gcp); |
367 |
< |
/* compute cell and voxel centers */ |
368 |
< |
for (i = 0; i < 3; i++) { |
369 |
< |
org[i] = 0.5*(cv[0][i] + cv[2][i]); |
370 |
< |
gp[i] = voxel[cap->vi].i[i] + 0.5; |
371 |
< |
} |
372 |
< |
hdworld(vc, hdlist[voxel[cap->vi].hd], gp); |
373 |
< |
/* compute voxel pyramid using vector trick */ |
374 |
< |
for (i = 0; i < 3; i++) { |
375 |
< |
dir[0][i] = vc[i] - cv[0][i]; /* to 3 */ |
376 |
< |
dir[2][i] = vc[i] - cv[3][i]; /* to 0 */ |
377 |
< |
if (gcp->w & 1) { /* watch vertex order! */ |
378 |
< |
dir[1][i] = vc[i] - cv[2][i]; /* to 1 */ |
379 |
< |
dir[3][i] = vc[i] - cv[1][i]; /* to 2 */ |
380 |
< |
} else { |
381 |
< |
dir[1][i] = vc[i] - cv[1][i]; /* to 2 */ |
382 |
< |
dir[3][i] = vc[i] - cv[2][i]; /* to 1 */ |
365 |
> |
/* compute cell center */ |
366 |
> |
cgp[gcp->w>>1] = gcp->w&1 ? hp->grid[gcp->w>>1] : 0 ; |
367 |
> |
cgp[((gcp->w>>1)+1)%3] = gcp->i[0] + .5; |
368 |
> |
cgp[((gcp->w>>1)+2)%3] = gcp->i[1] + .5; |
369 |
> |
hdworld(org, hp, cgp); |
370 |
> |
/* compute direction to voxel center */ |
371 |
> |
for (i = 3; i--; ) |
372 |
> |
vgp[i] = voxel[cap->vi].i[i] + .5; |
373 |
> |
hdworld(vc, hp, vgp); |
374 |
> |
for (i = 3; i--; ) |
375 |
> |
vc[i] -= org[i]; |
376 |
> |
/* compute maximum area axis */ |
377 |
> |
axmax = -1; avmax = 0; |
378 |
> |
for (i = 3; i--; ) { |
379 |
> |
d = vgp[i] - cgp[i]; |
380 |
> |
if (d < 0.) d = -d; |
381 |
> |
if (d > avmax) { |
382 |
> |
avmax = d; |
383 |
> |
axmax = i; |
384 |
|
} |
385 |
|
} |
386 |
+ |
#ifdef DEBUG |
387 |
+ |
if (axmax < 0.) |
388 |
+ |
error(CONSISTENCY, "botched axis computation in docell"); |
389 |
+ |
#endif |
390 |
+ |
/* compute offset vectors */ |
391 |
+ |
d = 0.5/hp->grid[j=(axmax+1)%3]; |
392 |
+ |
for (i = 3; i--; ) |
393 |
+ |
v1[i] = hp->xv[j][i] * d; |
394 |
+ |
d = 0.5/hp->grid[j=(axmax+2)%3]; |
395 |
+ |
if (DOT(hp->wn[axmax], vc) < 0.) |
396 |
+ |
d = -d; /* reverse vertex ordering */ |
397 |
+ |
for (i = 3; i--; ) |
398 |
+ |
v2[i] = hp->xv[j][i] * d; |
399 |
+ |
/* compute voxel pyramid */ |
400 |
+ |
for (i = 3; i--; ) { |
401 |
+ |
dir[0][i] = vc[i] - v1[i] - v2[i]; |
402 |
+ |
dir[1][i] = vc[i] + v1[i] - v2[i]; |
403 |
+ |
dir[2][i] = vc[i] + v1[i] + v2[i]; |
404 |
+ |
dir[3][i] = vc[i] - v1[i] + v2[i]; |
405 |
+ |
} |
406 |
|
/* visit beams for opposite cells */ |
407 |
|
copystruct(&bo.ca, cap); |
408 |
|
copystruct(&bo.gc, gcp); |
409 |
< |
return(visit_cells(org, dir, hdlist[voxel[cap->vi].hd], dobeam, &bo)); |
409 |
> |
return(visit_cells(org, dir, hp, dobeam, &bo)); |
410 |
|
} |
411 |
|
|
412 |
|
|
435 |
|
struct cellact oca, nca; |
436 |
|
int ocnt, ncnt; |
437 |
|
int c; |
438 |
+ |
GCOORD *ogcl, *ngcl; |
439 |
|
register GCOORD *ogcp, *ngcp; |
440 |
|
/* get old and new cell lists */ |
441 |
< |
ogcp = getviewcells(&ocnt, hdlist[voxel[voxi].hd], vold); |
442 |
< |
ngcp = getviewcells(&ncnt, hdlist[voxel[voxi].hd], vnew); |
441 |
> |
ogcp = ogcl = getviewcells(&ocnt, hdlist[voxel[voxi].hd], vold); |
442 |
> |
ngcp = ngcl = getviewcells(&ncnt, hdlist[voxel[voxi].hd], vnew); |
443 |
|
/* set up actions */ |
444 |
|
oca.vi = nca.vi = voxi; |
370 |
– |
oca.rev = nca.rev = 0; |
445 |
|
oca.add = 0; nca.add = 1; |
446 |
|
if ((oca.rev = ocnt < 0)) |
447 |
|
ocnt = -ocnt; |
448 |
|
if ((nca.rev = ncnt < 0)) |
449 |
|
ncnt = -ncnt; |
450 |
< |
/* add and delete cells in order */ |
451 |
< |
while (ocnt > 0 & ncnt > 0) |
452 |
< |
if ((c = cellcmp(ogcp, ngcp)) > 0) { /* new cell */ |
453 |
< |
netchange += docell(ngcp++, &nca); |
454 |
< |
ncnt--; |
455 |
< |
} else if (c < 0) { /* obsolete cell */ |
456 |
< |
netchange -= docell(ogcp++, &oca); |
457 |
< |
ocnt--; |
458 |
< |
} else { /* same cell? */ |
459 |
< |
if (oca.rev != nca.rev) /* not */ |
460 |
< |
netchange += docell(ngcp, &nca) - |
461 |
< |
docell(ogcp, &oca); |
388 |
< |
ogcp++; ocnt--; |
389 |
< |
ngcp++; ncnt--; |
390 |
< |
} |
450 |
> |
if (nca.rev == oca.rev) /* add and delete cells in order */ |
451 |
> |
while (ocnt > 0 & ncnt > 0) |
452 |
> |
if ((c = cellcmp(ogcp, ngcp)) > 0) { /* new cell */ |
453 |
> |
netchange += docell(ngcp++, &nca); |
454 |
> |
ncnt--; |
455 |
> |
} else if (c < 0) { /* old cell */ |
456 |
> |
netchange -= docell(ogcp++, &oca); |
457 |
> |
ocnt--; |
458 |
> |
} else { /* same cell */ |
459 |
> |
ogcp++; ocnt--; |
460 |
> |
ngcp++; ncnt--; |
461 |
> |
} |
462 |
|
/* take care of list tails */ |
463 |
|
for ( ; ncnt > 0; ncnt--) |
464 |
|
netchange += docell(ngcp++, &nca); |
465 |
|
for ( ; ocnt > 0; ocnt--) |
466 |
|
netchange -= docell(ogcp++, &oca); |
467 |
|
/* clean up */ |
468 |
< |
if (ogcp != NULL) free((char *)ogcp); |
469 |
< |
if (ngcp != NULL) free((char *)ngcp); |
468 |
> |
if (ogcl != NULL) free((char *)ogcl); |
469 |
> |
if (ngcl != NULL) free((char *)ngcl); |
470 |
|
return(netchange); |
471 |
|
} |
472 |
|
|
473 |
|
|
474 |
+ |
int |
475 |
|
beam_sync() /* synchronize beams on server */ |
476 |
|
{ |
477 |
|
cbeamop(DR_NEWSET, cbeam, ncbeams, &odev.v, odev.hres, odev.vres); |
478 |
+ |
return(ncbeams); |
479 |
|
} |
480 |
|
|
481 |
|
|
482 |
< |
beam_view(vo, vn) /* change beam view */ |
483 |
< |
VIEW *vo, *vn; |
482 |
> |
beam_view(vn) /* change beam view (if advisable) */ |
483 |
> |
VIEW *vn; |
484 |
|
{ |
485 |
|
struct cellact ca; |
486 |
|
VOXL vlnew[8]; |
487 |
|
int n, comn; |
488 |
|
|
489 |
< |
if (!vn->type) { /* clear our beam list */ |
489 |
> |
if (vn == NULL || !vn->type) { /* clear our beam list */ |
490 |
|
set_voxels(vlnew, 0); |
491 |
|
cbeamop(DR_DELSET, cbeam, ncbeams, NULL, 0, 0); |
492 |
|
ncbeams = 0; |
493 |
< |
return; |
493 |
> |
dvw.type = 0; |
494 |
> |
return(1); |
495 |
|
} |
496 |
|
/* find our new voxels */ |
497 |
|
n = get_voxels(vlnew, vn->vp); |
498 |
+ |
if (dvw.type && !n) { |
499 |
+ |
copystruct(vn, &dvw); /* cancel move */ |
500 |
+ |
return(0); |
501 |
+ |
} |
502 |
|
/* set the new voxels */ |
503 |
|
comn = set_voxels(vlnew, n); |
504 |
< |
if (!vo->type) |
504 |
> |
if (!dvw.type) |
505 |
|
comn = 0; |
506 |
|
ca.add = 1; /* update our beam list */ |
507 |
|
for (ca.vi = n; ca.vi--; ) |
508 |
|
if (comn & 1<<ca.vi) /* change which cells we see */ |
509 |
< |
mvview(ca.vi, vo, vn); |
509 |
> |
mvview(ca.vi, &dvw, vn); |
510 |
|
else /* else add all new cells */ |
511 |
|
doview(&ca, vn); |
512 |
+ |
#if 1 |
513 |
+ |
cbeamadj(vn, odev.hres, odev.vres); |
514 |
+ |
#else |
515 |
|
/* inform server of new beams */ |
516 |
|
cbeamop(DR_ADDSET, cbeam+ncbeams, xcbeams, vn, odev.hres, odev.vres); |
517 |
|
/* sort list to put orphans at end */ |
519 |
|
/* tell server to delete orphans */ |
520 |
|
cbeamop(DR_DELSET, cbeam+ncbeams, xcbeams, NULL, 0, 0); |
521 |
|
xcbeams = 0; /* truncate our list */ |
522 |
+ |
#endif |
523 |
+ |
copystruct(&dvw, vn); /* record new view */ |
524 |
+ |
return(1); |
525 |
|
} |