| 1 |
< |
/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
| 1 |
> |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
| 2 |
|
|
| 3 |
|
#ifndef lint |
| 4 |
|
static char SCCSid[] = "$SunId$ SGI"; |
| 12 |
|
#include "rhdisp.h" |
| 13 |
|
#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 */ |
| 94 |
|
|
| 95 |
|
if (!cb1->wants) /* put orphans at the end, unsorted */ |
| 96 |
|
return(cb2->wants); |
| 97 |
+ |
if (!cb2->wants) |
| 98 |
+ |
return(-1); |
| 99 |
|
if ((c = cb1->bi - cb2->bi)) /* sort on beam index first */ |
| 100 |
|
return(c); |
| 101 |
|
return(cb1->hd - cb2->hd); /* use hd to resolve matches */ |
| 184 |
|
pa[i].bi = bl[i].bi; |
| 185 |
|
pa[i].nr = v==NULL ? 0 : |
| 186 |
|
npixels(v, hr, vr, hdlist[bl[i].hd], bl[i].bi); |
| 187 |
+ |
pa[i].nc = 0; |
| 188 |
|
} |
| 189 |
|
serv_request(op, n*sizeof(PACKHEAD), (char *)pa); |
| 190 |
|
free((char *)pa); |
| 235 |
|
VOXL vl[8]; |
| 236 |
|
FVECT vp; |
| 237 |
|
{ |
| 231 |
– |
static int lastn = 0, lastd = -1; |
| 238 |
|
int n = 0; |
| 239 |
|
FVECT gp; |
| 240 |
|
double d; |
| 265 |
|
n++; |
| 266 |
|
} |
| 267 |
|
} |
| 268 |
< |
/* warn of dangerous moves */ |
| 269 |
< |
if (n < lastn && bestd >= lastd) |
| 270 |
< |
error(WARNING, "moving outside holodeck section"); |
| 271 |
< |
else if (n > lastn && bestd <= lastd) |
| 272 |
< |
error(WARNING, "moving inside holodeck section"); |
| 273 |
< |
lastd = bestd; |
| 268 |
< |
return(lastn = n); |
| 268 |
> |
/* check for really stupid move */ |
| 269 |
> |
if (bestd > MAXDIST) { |
| 270 |
> |
error(COMMAND, "move past outer limits"); |
| 271 |
> |
return(0); |
| 272 |
> |
} |
| 273 |
> |
return(n); |
| 274 |
|
} |
| 275 |
|
|
| 276 |
|
|
| 312 |
|
GCOORD *gcp; |
| 313 |
|
register struct cellact *cap; |
| 314 |
|
{ |
| 315 |
+ |
register HOLO *hp = hdlist[voxel[cap->vi].hd]; |
| 316 |
|
FVECT org, dir[4]; |
| 317 |
< |
FVECT gp, cv[4], vc; |
| 317 |
> |
FVECT vgp, cgp, vc; |
| 318 |
> |
FVECT v1, v2; |
| 319 |
|
struct beamact bo; |
| 320 |
+ |
int axmax, j; |
| 321 |
+ |
double d, avmax; |
| 322 |
|
register int i; |
| 323 |
< |
/* compute cell vertices */ |
| 324 |
< |
hdcell(cv, hdlist[voxel[cap->vi].hd], gcp); |
| 325 |
< |
/* compute cell and voxel centers */ |
| 326 |
< |
for (i = 0; i < 3; i++) { |
| 327 |
< |
org[i] = 0.5*(cv[0][i] + cv[2][i]); |
| 328 |
< |
gp[i] = voxel[cap->vi].i[i] + 0.5; |
| 329 |
< |
} |
| 330 |
< |
hdworld(vc, hdlist[voxel[cap->vi].hd], gp); |
| 331 |
< |
/* compute voxel pyramid using vector trick */ |
| 332 |
< |
for (i = 0; i < 3; i++) { |
| 333 |
< |
dir[0][i] = vc[i] - cv[0][i]; /* to 3 */ |
| 334 |
< |
dir[2][i] = vc[i] - cv[3][i]; /* to 0 */ |
| 335 |
< |
if (gcp->w & 1) { /* watch vertex order! */ |
| 336 |
< |
dir[1][i] = vc[i] - cv[2][i]; /* to 1 */ |
| 337 |
< |
dir[3][i] = vc[i] - cv[1][i]; /* to 2 */ |
| 338 |
< |
} else { |
| 339 |
< |
dir[1][i] = vc[i] - cv[1][i]; /* to 2 */ |
| 340 |
< |
dir[3][i] = vc[i] - cv[2][i]; /* to 1 */ |
| 323 |
> |
/* compute cell center */ |
| 324 |
> |
cgp[gcp->w>>1] = gcp->w&1 ? hp->grid[gcp->w>>1] : 0 ; |
| 325 |
> |
cgp[hdwg0[gcp->w]] = gcp->i[0] + .5; |
| 326 |
> |
cgp[hdwg1[gcp->w]] = gcp->i[1] + .5; |
| 327 |
> |
hdworld(org, hp, cgp); |
| 328 |
> |
/* compute direction to voxel center */ |
| 329 |
> |
for (i = 3; i--; ) |
| 330 |
> |
vgp[i] = voxel[cap->vi].i[i] + .5; |
| 331 |
> |
hdworld(vc, hp, vgp); |
| 332 |
> |
for (i = 3; i--; ) |
| 333 |
> |
vc[i] -= org[i]; |
| 334 |
> |
/* compute maximum area axis */ |
| 335 |
> |
axmax = -1; avmax = 0; |
| 336 |
> |
for (i = 3; i--; ) { |
| 337 |
> |
d = vgp[i] - cgp[i]; |
| 338 |
> |
if (d < 0.) d = -d; |
| 339 |
> |
if (d > avmax) { |
| 340 |
> |
avmax = d; |
| 341 |
> |
axmax = i; |
| 342 |
|
} |
| 343 |
|
} |
| 344 |
+ |
#ifdef DEBUG |
| 345 |
+ |
if (axmax < 0.) |
| 346 |
+ |
error(CONSISTENCY, "botched axis computation in docell"); |
| 347 |
+ |
#endif |
| 348 |
+ |
/* compute offset vectors */ |
| 349 |
+ |
d = 0.5/hp->grid[j=(axmax+1)%3]; |
| 350 |
+ |
for (i = 3; i--; ) |
| 351 |
+ |
v1[i] = hp->xv[j][i] * d; |
| 352 |
+ |
d = 0.5/hp->grid[j=(axmax+2)%3]; |
| 353 |
+ |
if (DOT(hp->wg[axmax], vc) < 0.) |
| 354 |
+ |
d = -d; /* reverse vertex order */ |
| 355 |
+ |
for (i = 3; i--; ) |
| 356 |
+ |
v2[i] = hp->xv[j][i] * d; |
| 357 |
+ |
/* compute voxel pyramid */ |
| 358 |
+ |
for (i = 3; i--; ) { |
| 359 |
+ |
dir[0][i] = vc[i] - v1[i] - v2[i]; |
| 360 |
+ |
dir[1][i] = vc[i] + v1[i] - v2[i]; |
| 361 |
+ |
dir[2][i] = vc[i] + v1[i] + v2[i]; |
| 362 |
+ |
dir[3][i] = vc[i] - v1[i] + v2[i]; |
| 363 |
+ |
} |
| 364 |
|
/* visit beams for opposite cells */ |
| 365 |
|
copystruct(&bo.ca, cap); |
| 366 |
|
copystruct(&bo.gc, gcp); |
| 367 |
< |
return(visit_cells(org, dir, hdlist[voxel[cap->vi].hd], dobeam, &bo)); |
| 367 |
> |
return(visit_cells(org, dir, hp, dobeam, &bo)); |
| 368 |
|
} |
| 369 |
|
|
| 370 |
|
|
| 400 |
|
ngcp = ngcl = getviewcells(&ncnt, hdlist[voxel[voxi].hd], vnew); |
| 401 |
|
/* set up actions */ |
| 402 |
|
oca.vi = nca.vi = voxi; |
| 373 |
– |
oca.rev = nca.rev = 0; |
| 403 |
|
oca.add = 0; nca.add = 1; |
| 404 |
|
if ((oca.rev = ocnt < 0)) |
| 405 |
|
ocnt = -ocnt; |
| 429 |
|
} |
| 430 |
|
|
| 431 |
|
|
| 432 |
+ |
int |
| 433 |
|
beam_sync() /* synchronize beams on server */ |
| 434 |
|
{ |
| 435 |
|
cbeamop(DR_NEWSET, cbeam, ncbeams, &odev.v, odev.hres, odev.vres); |
| 436 |
+ |
return(ncbeams); |
| 437 |
|
} |
| 438 |
|
|
| 439 |
|
|
| 440 |
< |
beam_view(vn) /* change beam view */ |
| 440 |
> |
beam_view(vn) /* change beam view (if advisable) */ |
| 441 |
|
VIEW *vn; |
| 442 |
|
{ |
| 443 |
|
struct cellact ca; |
| 444 |
|
VOXL vlnew[8]; |
| 445 |
|
int n, comn; |
| 446 |
|
|
| 447 |
< |
if (!vn->type) { /* clear our beam list */ |
| 447 |
> |
if (vn == NULL || !vn->type) { /* clear our beam list */ |
| 448 |
|
set_voxels(vlnew, 0); |
| 449 |
|
cbeamop(DR_DELSET, cbeam, ncbeams, NULL, 0, 0); |
| 450 |
|
ncbeams = 0; |
| 451 |
< |
copystruct(&dvw, vn); |
| 452 |
< |
return; |
| 451 |
> |
dvw.type = 0; |
| 452 |
> |
return(1); |
| 453 |
|
} |
| 454 |
|
/* find our new voxels */ |
| 455 |
|
n = get_voxels(vlnew, vn->vp); |
| 456 |
+ |
if (dvw.type && !n) { |
| 457 |
+ |
copystruct(vn, &dvw); /* cancel move */ |
| 458 |
+ |
return(0); |
| 459 |
+ |
} |
| 460 |
|
/* set the new voxels */ |
| 461 |
|
comn = set_voxels(vlnew, n); |
| 462 |
|
if (!dvw.type) |
| 475 |
|
cbeamop(DR_DELSET, cbeam+ncbeams, xcbeams, NULL, 0, 0); |
| 476 |
|
xcbeams = 0; /* truncate our list */ |
| 477 |
|
copystruct(&dvw, vn); /* record new view */ |
| 478 |
+ |
return(1); |
| 479 |
|
} |
