5 |
|
#endif |
6 |
|
|
7 |
|
/* |
8 |
< |
* Holodeck beam tracking |
8 |
> |
* Holodeck beam tracking for display process |
9 |
|
*/ |
10 |
|
|
11 |
|
#include "rholo.h" |
12 |
|
#include "rhdisp.h" |
13 |
|
#include "rhdriver.h" |
14 |
|
|
15 |
< |
extern int *getviewcells(); |
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 |
|
typedef struct { |
24 |
< |
int hd; /* holodeck section number */ |
24 |
> |
int hd; /* holodeck section number (-1 if inactive) */ |
25 |
|
int i[3]; /* voxel index (may be outside section) */ |
26 |
|
} VOXL; /* a voxel */ |
27 |
|
|
42 |
|
static int xcbeams = 0; /* extra (unregistered) beams past ncbeams */ |
43 |
|
static int maxcbeam = 0; /* size of cbeam array */ |
44 |
|
|
39 |
– |
|
45 |
|
struct cellact { |
46 |
|
short vi; /* voxel index */ |
47 |
|
short add; /* zero means delete */ |
48 |
+ |
short rev; /* reverse ray direction? */ |
49 |
|
}; /* action for cell */ |
50 |
|
|
45 |
– |
|
51 |
|
struct beamact { |
52 |
|
struct cellact ca; /* cell action */ |
53 |
|
GCOORD gc; /* grid coordinate */ |
162 |
|
} |
163 |
|
|
164 |
|
|
165 |
< |
cbeamadd(bl, n, v, hr, vr) /* add beams to server list */ |
161 |
< |
register struct beamcomp *bl; |
162 |
< |
int n; |
165 |
> |
cbeamadj(v, hr, vr) /* adjust our beam list */ |
166 |
|
VIEW *v; |
167 |
|
int hr, vr; |
168 |
|
{ |
169 |
|
register PACKHEAD *pa; |
170 |
|
register int i; |
171 |
< |
|
172 |
< |
if (n <= 0) |
173 |
< |
return; |
174 |
< |
pa = (PACKHEAD *)malloc(n*sizeof(PACKHEAD)); |
175 |
< |
if (pa == NULL) |
176 |
< |
error(SYSTEM, "out of memory in cbeamadd"); |
177 |
< |
for (i = 0; i < n; i++) |
178 |
< |
pa[i].nr = npixels(v, hr, vr, |
179 |
< |
hdlist[pa[i].hd=bl[i].hd], |
180 |
< |
pa[i].bi=bl[i].bi) / 8; |
181 |
< |
|
182 |
< |
serv_request(DR_ADDSET, n*sizeof(PACKHEAD), (char *)pa); |
171 |
> |
int n; |
172 |
> |
/* first handle additions */ |
173 |
> |
pa = (PACKHEAD *)malloc(xcbeams*sizeof(PACKHEAD)); |
174 |
> |
if (xcbeams && pa == NULL) |
175 |
> |
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) + 1; |
180 |
> |
} |
181 |
> |
n = xcbeams; /* now sort list for deletions */ |
182 |
> |
cbeamsort(0); |
183 |
> |
pa = (PACKHEAD *)realloc((char *)pa, (n+xcbeams)*sizeof(PACKHEAD)); |
184 |
> |
if (n+xcbeams && pa == NULL) |
185 |
> |
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 |
> |
n += xcbeams; |
192 |
> |
xcbeams = 0; /* delete orphans */ |
193 |
> |
serv_request(DR_ADJSET, n*sizeof(PACKHEAD), (char *)pa); |
194 |
|
free((char *)pa); |
195 |
+ |
return; |
196 |
+ |
memerr: |
197 |
+ |
error(SYSTEM, "out of memory in cbeamadj"); |
198 |
|
} |
199 |
|
|
200 |
|
|
201 |
< |
cbeamdel(bl, n) /* delete unwanted beam requests */ |
201 |
> |
cbeamop(op, bl, n, v, hr, vr) /* update beams on server list */ |
202 |
> |
int op; |
203 |
|
register struct beamcomp *bl; |
204 |
|
int n; |
205 |
+ |
VIEW *v; |
206 |
+ |
int hr, vr; |
207 |
|
{ |
208 |
|
register PACKHEAD *pa; |
209 |
|
register int i; |
212 |
|
return; |
213 |
|
pa = (PACKHEAD *)malloc(n*sizeof(PACKHEAD)); |
214 |
|
if (pa == NULL) |
215 |
< |
error(SYSTEM, "out of memory in cbeamdel"); |
215 |
> |
error(SYSTEM, "out of memory in cbeamadd"); |
216 |
|
for (i = 0; i < n; i++) { |
217 |
|
pa[i].hd = bl[i].hd; |
218 |
|
pa[i].bi = bl[i].bi; |
219 |
< |
pa[i].nr = 0; /* removes any request */ |
219 |
> |
pa[i].nr = v==NULL ? 0 : |
220 |
> |
npixels(v, hr, vr, hdlist[bl[i].hd], bl[i].bi); |
221 |
|
} |
222 |
< |
serv_request(DR_DELSET, n*sizeof(PACKHEAD), (char *)pa); |
222 |
> |
serv_request(op, n*sizeof(PACKHEAD), (char *)pa); |
223 |
|
free((char *)pa); |
224 |
|
} |
225 |
|
|
268 |
|
VOXL vl[8]; |
269 |
|
FVECT vp; |
270 |
|
{ |
271 |
+ |
static int lastn = 0, lastd = -1; |
272 |
|
int n = 0; |
273 |
|
FVECT gp; |
274 |
|
double d; |
299 |
|
n++; |
300 |
|
} |
301 |
|
} |
302 |
< |
return(n); |
302 |
> |
/* check for really stupid move */ |
303 |
> |
if (bestd > MAXDIST) { |
304 |
> |
error(COMMAND, "move past outer limits"); |
305 |
> |
return(0); |
306 |
> |
} |
307 |
> |
/* warn of dangerous moves */ |
308 |
> |
if (n < lastn && bestd >= lastd) |
309 |
> |
error(WARNING, "moving outside holodeck section"); |
310 |
> |
else if (n > lastn && bestd <= lastd) |
311 |
> |
error(WARNING, "moving inside holodeck section"); |
312 |
> |
lastd = bestd; |
313 |
> |
return(lastn = n); |
314 |
|
} |
315 |
|
|
316 |
|
|
322 |
|
GCOORD gc[2]; |
323 |
|
int bi, i; |
324 |
|
/* 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 |
> |
copystruct(gc+1, &bp->gc); |
331 |
> |
} |
332 |
|
if ((bi = hdbindex(hdlist[voxel[bp->ca.vi].hd], gc)) <= 0) |
333 |
< |
return(0); /* should report an error? */ |
333 |
> |
error(CONSISTENCY, "bad grid coordinate in dobeam"); |
334 |
|
if (bp->ca.add) { /* add it in */ |
335 |
|
i = getcbeam(voxel[bp->ca.vi].hd, bi); |
336 |
|
cbeam[i].wants |= 1<<bp->ca.vi; /* say we want it */ |
352 |
|
GCOORD *gcp; |
353 |
|
register struct cellact *cap; |
354 |
|
{ |
355 |
+ |
register HOLO *hp = hdlist[voxel[cap->vi].hd]; |
356 |
|
FVECT org, dir[4]; |
357 |
< |
FVECT gp, cv[4], vc; |
357 |
> |
FVECT vgp, cgp, vc; |
358 |
> |
FVECT v1, v2; |
359 |
|
struct beamact bo; |
360 |
+ |
int axmax, j; |
361 |
+ |
double d, avmax; |
362 |
|
register int i; |
363 |
< |
/* compute cell vertices */ |
364 |
< |
hdcell(cv, hdlist[voxel[cap->vi].hd], gcp); |
365 |
< |
/* compute cell and voxel centers */ |
366 |
< |
for (i = 0; i < 3; i++) { |
367 |
< |
org[i] = 0.5*(cv[0][i] + cv[2][i]); |
368 |
< |
gp[i] = voxel[cap->vi].i[i] + 0.5; |
369 |
< |
} |
370 |
< |
hdworld(vc, hdlist[voxel[cap->vi].hd], gp); |
371 |
< |
/* compute voxel pyramid using vector trick */ |
372 |
< |
for (i = 0; i < 3; i++) { |
373 |
< |
dir[0][i] = vc[i] - cv[0][i]; /* to 3 */ |
374 |
< |
dir[2][i] = vc[i] - cv[3][i]; /* to 0 */ |
375 |
< |
if (gcp->w & 1) { /* watch vertex order! */ |
376 |
< |
dir[1][i] = vc[i] - cv[2][i]; /* to 1 */ |
377 |
< |
dir[3][i] = vc[i] - cv[1][i]; /* to 2 */ |
378 |
< |
} else { |
379 |
< |
dir[1][i] = vc[i] - cv[1][i]; /* to 2 */ |
380 |
< |
dir[3][i] = vc[i] - cv[2][i]; /* to 1 */ |
363 |
> |
/* compute cell center */ |
364 |
> |
cgp[gcp->w>>1] = gcp->w&1 ? hp->grid[gcp->w>>1] : 0 ; |
365 |
> |
cgp[((gcp->w>>1)+1)%3] = gcp->i[0] + .5; |
366 |
> |
cgp[((gcp->w>>1)+2)%3] = gcp->i[1] + .5; |
367 |
> |
hdworld(org, hp, cgp); |
368 |
> |
/* compute direction to voxel center */ |
369 |
> |
for (i = 3; i--; ) |
370 |
> |
vgp[i] = voxel[cap->vi].i[i] + .5; |
371 |
> |
hdworld(vc, hp, vgp); |
372 |
> |
for (i = 3; i--; ) |
373 |
> |
vc[i] -= org[i]; |
374 |
> |
/* compute maximum area axis */ |
375 |
> |
axmax = -1; avmax = 0; |
376 |
> |
for (i = 3; i--; ) { |
377 |
> |
d = vgp[i] - cgp[i]; |
378 |
> |
if (d < 0.) d = -d; |
379 |
> |
if (d > avmax) { |
380 |
> |
avmax = d; |
381 |
> |
axmax = i; |
382 |
|
} |
383 |
|
} |
384 |
+ |
#ifdef DEBUG |
385 |
+ |
if (axmax < 0.) |
386 |
+ |
error(CONSISTENCY, "botched axis computation in docell"); |
387 |
+ |
#endif |
388 |
+ |
/* compute offset vectors */ |
389 |
+ |
d = 0.5/hp->grid[j=(axmax+1)%3]; |
390 |
+ |
for (i = 3; i--; ) |
391 |
+ |
v1[i] = hp->xv[j][i] * d; |
392 |
+ |
d = 0.5/hp->grid[j=(axmax+2)%3]; |
393 |
+ |
if (DOT(hp->wn[axmax], vc) < 0.) |
394 |
+ |
d = -d; /* reverse vertex ordering */ |
395 |
+ |
for (i = 3; i--; ) |
396 |
+ |
v2[i] = hp->xv[j][i] * d; |
397 |
+ |
/* compute voxel pyramid */ |
398 |
+ |
for (i = 3; i--; ) { |
399 |
+ |
dir[0][i] = vc[i] - v1[i] - v2[i]; |
400 |
+ |
dir[1][i] = vc[i] + v1[i] - v2[i]; |
401 |
+ |
dir[2][i] = vc[i] + v1[i] + v2[i]; |
402 |
+ |
dir[3][i] = vc[i] - v1[i] + v2[i]; |
403 |
+ |
} |
404 |
|
/* visit beams for opposite cells */ |
405 |
|
copystruct(&bo.ca, cap); |
406 |
|
copystruct(&bo.gc, gcp); |
407 |
< |
return(visit_cells(org, dir, hdlist[voxel[cap->vi].hd], dobeam, &bo)); |
407 |
> |
return(visit_cells(org, dir, hp, dobeam, &bo)); |
408 |
|
} |
409 |
|
|
410 |
|
|
413 |
|
struct cellact *cap; |
414 |
|
VIEW *vp; |
415 |
|
{ |
416 |
+ |
int orient; |
417 |
|
FVECT org, dir[4]; |
418 |
|
/* compute view pyramid */ |
419 |
< |
if (vp->type == VT_PAR) goto viewerr; |
420 |
< |
if (viewray(org, dir[0], vp, 0., 0.) < -FTINY) goto viewerr; |
421 |
< |
if (viewray(org, dir[1], vp, 0., 1.) < -FTINY) goto viewerr; |
422 |
< |
if (viewray(org, dir[2], vp, 1., 1.) < -FTINY) goto viewerr; |
359 |
< |
if (viewray(org, dir[3], vp, 1., 0.) < -FTINY) goto viewerr; |
419 |
> |
orient = viewpyramid(org, dir, hdlist[voxel[cap->vi].hd], vp); |
420 |
> |
if (!orient) |
421 |
> |
error(INTERNAL, "unusable view in doview"); |
422 |
> |
cap->rev = orient < 0; |
423 |
|
/* visit cells within pyramid */ |
424 |
|
return(visit_cells(org, dir, hdlist[voxel[cap->vi].hd], docell, cap)); |
362 |
– |
viewerr: |
363 |
– |
error(INTERNAL, "unusable view in doview"); |
425 |
|
} |
426 |
|
|
427 |
|
|
430 |
|
VIEW *vold, *vnew; |
431 |
|
{ |
432 |
|
int netchange = 0; |
433 |
< |
int *ocl, *ncl; |
373 |
< |
struct cellact ca; |
433 |
> |
struct cellact oca, nca; |
434 |
|
int ocnt, ncnt; |
435 |
|
int c; |
436 |
+ |
GCOORD *ogcl, *ngcl; |
437 |
|
register GCOORD *ogcp, *ngcp; |
438 |
|
/* get old and new cell lists */ |
439 |
< |
ocl = getviewcells(hdlist[voxel[voxi].hd], vold); |
440 |
< |
ncl = getviewcells(hdlist[voxel[voxi].hd], vnew); |
441 |
< |
if (ocl != NULL) { |
442 |
< |
ocnt = *ocl; ogcp = (GCOORD *)(ocl+1); |
443 |
< |
} else { |
444 |
< |
ocnt = 0; ogcp = NULL; |
445 |
< |
} |
446 |
< |
if (ncl != NULL) { |
447 |
< |
ncnt = *ncl; ngcp = (GCOORD *)(ncl+1); |
448 |
< |
} else { |
449 |
< |
ncnt = 0; ngcp = NULL; |
450 |
< |
} |
451 |
< |
ca.vi = voxi; /* add and delete cells */ |
452 |
< |
while (ocnt > 0 & ncnt > 0) |
453 |
< |
if ((c = cellcmp(ogcp, ngcp)) > 0) { |
454 |
< |
ca.add = 1; /* new cell */ |
455 |
< |
netchange += docell(ngcp++, &ca); |
456 |
< |
ncnt--; |
457 |
< |
} else if (c < 0) { |
458 |
< |
ca.add = 0; /* obsolete cell */ |
459 |
< |
netchange -= docell(ogcp++, &ca); |
399 |
< |
ocnt--; |
400 |
< |
} else { |
401 |
< |
ogcp++; ocnt--; /* unchanged cell */ |
402 |
< |
ngcp++; ncnt--; |
403 |
< |
} |
439 |
> |
ogcp = ogcl = getviewcells(&ocnt, hdlist[voxel[voxi].hd], vold); |
440 |
> |
ngcp = ngcl = getviewcells(&ncnt, hdlist[voxel[voxi].hd], vnew); |
441 |
> |
/* set up actions */ |
442 |
> |
oca.vi = nca.vi = voxi; |
443 |
> |
oca.add = 0; nca.add = 1; |
444 |
> |
if ((oca.rev = ocnt < 0)) |
445 |
> |
ocnt = -ocnt; |
446 |
> |
if ((nca.rev = ncnt < 0)) |
447 |
> |
ncnt = -ncnt; |
448 |
> |
if (nca.rev == oca.rev) /* add and delete cells in order */ |
449 |
> |
while (ocnt > 0 & ncnt > 0) |
450 |
> |
if ((c = cellcmp(ogcp, ngcp)) > 0) { /* new cell */ |
451 |
> |
netchange += docell(ngcp++, &nca); |
452 |
> |
ncnt--; |
453 |
> |
} else if (c < 0) { /* old cell */ |
454 |
> |
netchange -= docell(ogcp++, &oca); |
455 |
> |
ocnt--; |
456 |
> |
} else { /* same cell */ |
457 |
> |
ogcp++; ocnt--; |
458 |
> |
ngcp++; ncnt--; |
459 |
> |
} |
460 |
|
/* take care of list tails */ |
461 |
< |
for (ca.add = 1; ncnt > 0; ncnt--) |
462 |
< |
docell(ngcp++, &ca); |
463 |
< |
for (ca.add = 0; ocnt > 0; ocnt--) |
464 |
< |
docell(ogcp++, &ca); |
461 |
> |
for ( ; ncnt > 0; ncnt--) |
462 |
> |
netchange += docell(ngcp++, &nca); |
463 |
> |
for ( ; ocnt > 0; ocnt--) |
464 |
> |
netchange -= docell(ogcp++, &oca); |
465 |
|
/* clean up */ |
466 |
< |
if (ocl != NULL) free((char *)ocl); |
467 |
< |
if (ncl != NULL) free((char *)ncl); |
466 |
> |
if (ogcl != NULL) free((char *)ogcl); |
467 |
> |
if (ngcl != NULL) free((char *)ngcl); |
468 |
|
return(netchange); |
469 |
|
} |
470 |
|
|
471 |
|
|
472 |
< |
beam_view(vo, vn) /* change beam view */ |
473 |
< |
VIEW *vo, *vn; |
472 |
> |
int |
473 |
> |
beam_sync() /* synchronize beams on server */ |
474 |
|
{ |
475 |
+ |
cbeamop(DR_NEWSET, cbeam, ncbeams, &odev.v, odev.hres, odev.vres); |
476 |
+ |
return(ncbeams); |
477 |
+ |
} |
478 |
+ |
|
479 |
+ |
|
480 |
+ |
beam_view(vn) /* change beam view (if advisable) */ |
481 |
+ |
VIEW *vn; |
482 |
+ |
{ |
483 |
|
struct cellact ca; |
484 |
|
VOXL vlnew[8]; |
485 |
|
int n, comn; |
486 |
|
|
487 |
< |
if (!vn->type) { /* clear our beam list */ |
487 |
> |
if (vn == NULL || !vn->type) { /* clear our beam list */ |
488 |
|
set_voxels(vlnew, 0); |
489 |
< |
cbeamdel(cbeam, ncbeams); |
489 |
> |
cbeamop(DR_DELSET, cbeam, ncbeams, NULL, 0, 0); |
490 |
|
ncbeams = 0; |
491 |
< |
return; |
491 |
> |
dvw.type = 0; |
492 |
> |
return(1); |
493 |
|
} |
494 |
|
/* find our new voxels */ |
495 |
|
n = get_voxels(vlnew, vn->vp); |
496 |
+ |
if (dvw.type && !n) { |
497 |
+ |
copystruct(vn, &dvw); /* cancel move */ |
498 |
+ |
return(0); |
499 |
+ |
} |
500 |
|
/* set the new voxels */ |
501 |
|
comn = set_voxels(vlnew, n); |
502 |
< |
if (!vo->type) |
502 |
> |
if (!dvw.type) |
503 |
|
comn = 0; |
504 |
|
ca.add = 1; /* update our beam list */ |
505 |
|
for (ca.vi = n; ca.vi--; ) |
506 |
|
if (comn & 1<<ca.vi) /* change which cells we see */ |
507 |
< |
mvview(ca.vi, vo, vn); |
507 |
> |
mvview(ca.vi, &dvw, vn); |
508 |
|
else /* else add all new cells */ |
509 |
|
doview(&ca, vn); |
510 |
+ |
#if 1 |
511 |
+ |
cbeamadj(vn, odev.hres, odev.vres); |
512 |
+ |
#else |
513 |
|
/* inform server of new beams */ |
514 |
< |
cbeamadd(cbeam+ncbeams, xcbeams, vn, odev.hres, odev.vres); |
514 |
> |
cbeamop(DR_ADDSET, cbeam+ncbeams, xcbeams, vn, odev.hres, odev.vres); |
515 |
|
/* sort list to put orphans at end */ |
516 |
|
cbeamsort(0); |
517 |
|
/* tell server to delete orphans */ |
518 |
< |
cbeamdel(cbeam+ncbeams, xcbeams); |
518 |
> |
cbeamop(DR_DELSET, cbeam+ncbeams, xcbeams, NULL, 0, 0); |
519 |
|
xcbeams = 0; /* truncate our list */ |
520 |
+ |
#endif |
521 |
+ |
copystruct(&dvw, vn); /* record new view */ |
522 |
+ |
return(1); |
523 |
|
} |