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 0.1 /* 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 |
+ |
int |
225 |
|
addview(hd, vw, hres, vres) /* add view for section */ |
226 |
|
int hd; |
227 |
|
VIEW *vw; |
228 |
|
int hres, vres; |
229 |
|
{ |
230 |
< |
int sampquant; |
230 |
> |
int sampquant, samptot = 0; |
231 |
|
int h, v, shr, svr; |
232 |
|
GCOORD gc[2]; |
233 |
|
FVECT rorg, rdir; |
251 |
|
continue; |
252 |
|
cbeam[getcbeam(hd,hdbindex(hdlist[hd],gc))].nr += |
253 |
|
sampquant; |
254 |
+ |
samptot += sampquant; |
255 |
|
} |
256 |
+ |
return(samptot); |
257 |
|
} |
258 |
|
|
259 |
|
|
267 |
|
else /* else clear sample requests */ |
268 |
|
for (i = ncbeams+xcbeams; i--; ) |
269 |
|
cbeam[i].nr = 0; |
270 |
+ |
cureye.rng = 0.; |
271 |
|
} |
272 |
|
|
273 |
|
|
274 |
+ |
int * |
275 |
|
beam_view(vn, hr, vr) /* add beam view (if advisable) */ |
276 |
|
VIEW *vn; |
277 |
|
int hr, vr; |
278 |
|
{ |
279 |
< |
int todo[MAXTODO+1]; |
279 |
> |
static int todo[MAXTODO+1]; |
280 |
|
int n; |
281 |
+ |
double hdgsiz, d; |
282 |
+ |
register HOLO *hp; |
283 |
+ |
register int i; |
284 |
+ |
/* find nearby sections */ |
285 |
+ |
if (!(n = comptodo(todo, vn))) |
286 |
+ |
return(NULL); |
287 |
|
/* sort our list */ |
288 |
|
cbeamsort(1); |
289 |
< |
/* add view to nearby sections */ |
290 |
< |
if (!(n = comptodo(todo, vn))) |
291 |
< |
return(0); |
292 |
< |
while (n--) |
293 |
< |
addview(todo[n], vn, hr, vr); |
294 |
< |
return(1); |
289 |
> |
/* add view to flagged sections */ |
290 |
> |
for (i = 0; i < n; i++) |
291 |
> |
if (!addview(todo[i], vn, hr, vr)) { /* whoops! */ |
292 |
> |
register int j; |
293 |
> |
n--; /* delete from list */ |
294 |
> |
for (j = i--; j <= n; j++) |
295 |
> |
todo[j] = todo[j+1]; |
296 |
> |
} |
297 |
> |
if (!n || MEYERNG <= FTINY || vn->type == VT_PAR) |
298 |
> |
return(todo); |
299 |
> |
hdgsiz = 0.; /* compute mean grid size */ |
300 |
> |
for (i = 0; i < n; i++) { |
301 |
> |
hp = hdlist[todo[i]]; |
302 |
> |
hdgsiz += 1./3. / VLEN(hp->wg[0]) + |
303 |
> |
1./3. / VLEN(hp->wg[1]) + |
304 |
> |
1./3. / VLEN(hp->wg[2]) ; |
305 |
> |
} |
306 |
> |
hdgsiz /= (double)n; |
307 |
> |
/* add to current eye position */ |
308 |
> |
if (cureye.rng <= FTINY) { |
309 |
> |
VCOPY(cureye.vpt, vn->vp); |
310 |
> |
cureye.rng = MEYERNG * hdgsiz; |
311 |
> |
} else if ((d = sqrt(dist2(vn->vp,cureye.vpt))) + MEYERNG*hdgsiz > |
312 |
> |
cureye.rng) { |
313 |
> |
for (i = 3; i--; ) |
314 |
> |
cureye.vpt[i] = 0.5*(cureye.vpt[i] + vn->vp[i]); |
315 |
> |
cureye.rng = 0.5*(cureye.rng + MEYERNG*hdgsiz + d); |
316 |
> |
} |
317 |
> |
return(todo); |
318 |
|
} |
319 |
|
|
320 |
|
|
322 |
|
beam_sync(all) /* update beam list on server */ |
323 |
|
int all; |
324 |
|
{ |
325 |
+ |
/* set new eye position */ |
326 |
+ |
serv_request(DR_VIEWPOINT, sizeof(VIEWPOINT), (char *)&cureye); |
327 |
|
/* sort list (put orphans at end) */ |
328 |
|
cbeamsort(all < 0); |
329 |
+ |
/* send beam request */ |
330 |
|
if (all) |
331 |
|
cbeamop(DR_NEWSET, cbeam, ncbeams); |
332 |
|
else |