17 |
|
#define MAXDIST 42 /* maximum distance outside section */ |
18 |
|
#endif |
19 |
|
#ifndef NVSAMPS |
20 |
< |
#define NVSAMPS 4096 /* number of ray samples per view */ |
20 |
> |
#define NVSAMPS 16384 /* number of ray samples per view */ |
21 |
|
#endif |
22 |
< |
|
22 |
> |
#ifndef MEYERNG |
23 |
> |
#define MEYERNG 0.2 /* target mean eye range (rel. to grid) */ |
24 |
> |
#endif |
25 |
> |
#ifndef MAXTODO |
26 |
|
#define MAXTODO 3 /* maximum sections to look at */ |
27 |
< |
#define MAXDRAT 3.0 /* maximum distance ratio */ |
27 |
> |
#endif |
28 |
> |
#ifndef MAXDRAT |
29 |
> |
#define MAXDRAT 3.0 /* maximum distance ratio btwn. cand. sect. */ |
30 |
> |
#endif |
31 |
|
|
32 |
|
#define CBEAMBLK 1024 /* cbeam allocation block size */ |
33 |
|
|
37 |
|
int4 nr; /* number of samples desired */ |
38 |
|
} *cbeam = NULL; /* current beam list */ |
39 |
|
|
40 |
+ |
VIEWPOINT cureye; /* current eye position */ |
41 |
+ |
|
42 |
|
static int ncbeams = 0; /* number of sorted beams in cbeam */ |
43 |
|
static int xcbeams = 0; /* extra (unregistered) beams past ncbeams */ |
44 |
|
static int maxcbeam = 0; /* size of cbeam array */ |
178 |
|
} |
179 |
|
|
180 |
|
|
181 |
< |
int |
181 |
> |
static int |
182 |
|
comptodo(tdl, vw) /* compute holodeck sections in view */ |
183 |
|
int tdl[MAXTODO+1]; |
184 |
|
VIEW *vw; |
221 |
|
} |
222 |
|
|
223 |
|
|
224 |
< |
addview(hd, vw, hres, vres) /* add view for section */ |
224 |
> |
int |
225 |
> |
addview(hd, vw, rad, hres, vres) /* add view for section */ |
226 |
|
int hd; |
227 |
|
VIEW *vw; |
228 |
+ |
double rad; |
229 |
|
int hres, vres; |
230 |
|
{ |
231 |
< |
int sampquant; |
231 |
> |
int sampquant, samptot = 0; |
232 |
|
int h, v, shr, svr; |
233 |
|
GCOORD gc[2]; |
234 |
|
FVECT rorg, rdir; |
247 |
|
if (viewray(rorg, rdir, vw, (v+frandom())/svr, |
248 |
|
(h+frandom())/shr) < -FTINY) |
249 |
|
continue; |
250 |
+ |
if (rad > FTINY) { |
251 |
+ |
rorg[0] += (1.-2.*frandom())*rad; |
252 |
+ |
rorg[1] += (1.-2.*frandom())*rad; |
253 |
+ |
rorg[2] += (1.-2.*frandom())*rad; |
254 |
+ |
} |
255 |
|
if (hdinter(gc, NULL, NULL, hdlist[hd], rorg, rdir) |
256 |
< |
>= FHUGE) |
256 |
> |
>= 0.99*FHUGE) |
257 |
|
continue; |
258 |
|
cbeam[getcbeam(hd,hdbindex(hdlist[hd],gc))].nr += |
259 |
|
sampquant; |
260 |
+ |
samptot += sampquant; |
261 |
|
} |
262 |
+ |
return(samptot); |
263 |
|
} |
264 |
|
|
265 |
|
|
273 |
|
else /* else clear sample requests */ |
274 |
|
for (i = ncbeams+xcbeams; i--; ) |
275 |
|
cbeam[i].nr = 0; |
276 |
+ |
cureye.rng = 0.; |
277 |
|
} |
278 |
|
|
279 |
|
|
280 |
+ |
int * |
281 |
|
beam_view(vn, hr, vr) /* add beam view (if advisable) */ |
282 |
|
VIEW *vn; |
283 |
|
int hr, vr; |
284 |
|
{ |
285 |
< |
int todo[MAXTODO+1]; |
285 |
> |
static int todo[MAXTODO+1]; |
286 |
|
int n; |
287 |
< |
/* sort our list */ |
287 |
> |
double er, eravg, d; |
288 |
> |
register HOLO *hp; |
289 |
> |
register int i; |
290 |
> |
/* find nearby sections */ |
291 |
> |
if (!(n = comptodo(todo, vn))) |
292 |
> |
return(NULL); |
293 |
> |
/* sort current beam list */ |
294 |
|
cbeamsort(1); |
295 |
|
/* add view to nearby sections */ |
296 |
< |
if (!(n = comptodo(todo, vn))) |
297 |
< |
return(0); |
298 |
< |
while (n--) |
299 |
< |
addview(todo[n], vn, hr, vr); |
300 |
< |
return(1); |
296 |
> |
eravg = 0.; |
297 |
> |
for (i = 0; i < n; i++) { |
298 |
> |
hp = hdlist[todo[i]]; |
299 |
> |
if (MEYERNG > FTINY) |
300 |
> |
er = MEYERNG/3. / VLEN(hp->wg[0]) + |
301 |
> |
MEYERNG/3. / VLEN(hp->wg[1]) + |
302 |
> |
MEYERNG/3. / VLEN(hp->wg[2]) ; |
303 |
> |
else |
304 |
> |
er = 0.; |
305 |
> |
if (!addview(todo[i], vn, 0.25*er, hr, vr)) { |
306 |
> |
register int j; /* whoops! */ |
307 |
> |
n--; /* delete from list */ |
308 |
> |
for (j = i--; j <= n; j++) |
309 |
> |
todo[j] = todo[j+1]; |
310 |
> |
} else |
311 |
> |
eravg += er; |
312 |
> |
} |
313 |
> |
if (eravg <= FTINY) |
314 |
> |
return(todo); |
315 |
> |
/* compute average eye range */ |
316 |
> |
eravg /= (double)n; |
317 |
> |
/* add to current eye position */ |
318 |
> |
if (cureye.rng <= FTINY) { |
319 |
> |
VCOPY(cureye.vpt, vn->vp); |
320 |
> |
cureye.rng = eravg; |
321 |
> |
} else if ((d = sqrt(dist2(vn->vp,cureye.vpt))) + eravg > cureye.rng) { |
322 |
> |
for (i = 3; i--; ) |
323 |
> |
cureye.vpt[i] = 0.5*(cureye.vpt[i] + vn->vp[i]); |
324 |
> |
cureye.rng = 0.5*(cureye.rng + eravg + d); |
325 |
> |
} |
326 |
> |
return(todo); |
327 |
|
} |
328 |
|
|
329 |
|
|
331 |
|
beam_sync(all) /* update beam list on server */ |
332 |
|
int all; |
333 |
|
{ |
334 |
+ |
/* set new eye position */ |
335 |
+ |
serv_request(DR_VIEWPOINT, sizeof(VIEWPOINT), (char *)&cureye); |
336 |
|
/* sort list (put orphans at end) */ |
337 |
|
cbeamsort(all < 0); |
338 |
+ |
/* send beam request */ |
339 |
|
if (all) |
340 |
|
cbeamop(DR_NEWSET, cbeam, ncbeams); |
341 |
|
else |