| 19 |
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#ifndef NVSAMPS |
| 20 |
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#define NVSAMPS 4096 /* number of ray samples per view */ |
| 21 |
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#endif |
| 22 |
< |
|
| 22 |
> |
#ifndef MEYERNG |
| 23 |
> |
#define MEYERNG 0.2 /* target mean eye range (rel. to grid) */ |
| 24 |
> |
#endif |
| 25 |
> |
#ifndef MAXTODO |
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#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 |
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|
| 32 |
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#define CBEAMBLK 1024 /* cbeam allocation block size */ |
| 33 |
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|
| 37 |
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int4 nr; /* number of samples desired */ |
| 38 |
|
} *cbeam = NULL; /* current beam list */ |
| 39 |
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|
| 40 |
+ |
VIEWPOINT cureye; /* current eye position */ |
| 41 |
+ |
|
| 42 |
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static int ncbeams = 0; /* number of sorted beams in cbeam */ |
| 43 |
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static int xcbeams = 0; /* extra (unregistered) beams past ncbeams */ |
| 44 |
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static int maxcbeam = 0; /* size of cbeam array */ |
| 264 |
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else /* else clear sample requests */ |
| 265 |
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for (i = ncbeams+xcbeams; i--; ) |
| 266 |
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cbeam[i].nr = 0; |
| 267 |
+ |
cureye.rng = 0.; |
| 268 |
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} |
| 269 |
|
|
| 270 |
|
|
| 272 |
|
VIEW *vn; |
| 273 |
|
int hr, vr; |
| 274 |
|
{ |
| 275 |
< |
int todo[MAXTODO+1]; |
| 276 |
< |
int n; |
| 275 |
> |
int todo[MAXTODO+1], n; |
| 276 |
> |
double hdgsiz, d; |
| 277 |
> |
register HOLO *hp; |
| 278 |
> |
register int i; |
| 279 |
|
/* sort our list */ |
| 280 |
|
cbeamsort(1); |
| 281 |
|
/* add view to nearby sections */ |
| 282 |
|
if (!(n = comptodo(todo, vn))) |
| 283 |
|
return(0); |
| 284 |
< |
while (n--) |
| 285 |
< |
addview(todo[n], vn, hr, vr); |
| 284 |
> |
for (i = 0; i < n; i++) |
| 285 |
> |
addview(todo[i], vn, hr, vr); |
| 286 |
> |
if (MEYERNG <= FTINY || vn->type == VT_PAR) |
| 287 |
> |
return(1); |
| 288 |
> |
hdgsiz = 0.; d = 1./3. / n; /* compute mean grid size */ |
| 289 |
> |
for (i = 0; i < n; i++) { |
| 290 |
> |
hp = hdlist[todo[i]]; |
| 291 |
> |
hdgsiz += d * ( VLEN(hp->xv[0])/hp->grid[0] + |
| 292 |
> |
VLEN(hp->xv[1])/hp->grid[1] + |
| 293 |
> |
VLEN(hp->xv[2])/hp->grid[2] ) ; |
| 294 |
> |
} |
| 295 |
> |
/* add to current eye position */ |
| 296 |
> |
if (cureye.rng <= FTINY) { |
| 297 |
> |
VCOPY(cureye.vpt, vn->vp); |
| 298 |
> |
cureye.rng = MEYERNG * hdgsiz; |
| 299 |
> |
} else if ((d = sqrt(dist2(vn->vp,cureye.vpt))) + MEYERNG*hdgsiz > |
| 300 |
> |
cureye.rng) { |
| 301 |
> |
for (i = 3; i--; ) |
| 302 |
> |
cureye.vpt[i] = 0.5*(cureye.vpt[i] + vn->vp[i]); |
| 303 |
> |
cureye.rng = 0.5*(cureye.rng + MEYERNG*hdgsiz + d); |
| 304 |
> |
} |
| 305 |
|
return(1); |
| 306 |
|
} |
| 307 |
|
|
| 310 |
|
beam_sync(all) /* update beam list on server */ |
| 311 |
|
int all; |
| 312 |
|
{ |
| 313 |
+ |
/* set new eye position */ |
| 314 |
+ |
serv_request(DR_VIEWPOINT, sizeof(VIEWPOINT), (char *)&cureye); |
| 315 |
|
/* sort list (put orphans at end) */ |
| 316 |
|
cbeamsort(all < 0); |
| 317 |
+ |
/* send beam request */ |
| 318 |
|
if (all) |
| 319 |
|
cbeamop(DR_NEWSET, cbeam, ncbeams); |
| 320 |
|
else |
