| 16 |
|
#endif |
| 17 |
|
/* maximum allowed angle difference (deg.) */ |
| 18 |
|
#ifndef MAXANG |
| 19 |
< |
#define MAXANG 20. |
| 19 |
> |
#define MAXANG 20 |
| 20 |
|
#endif |
| 21 |
+ |
#if MAXANG>0 |
| 22 |
+ |
#define MAXDIFF2 ( MAXANG*MAXANG * (PI*PI/180./180.)) |
| 23 |
+ |
#endif |
| 24 |
|
|
| 22 |
– |
#define MAXDIFF2 (long)( MAXANG*MAXANG /90./90.*(1L<<15)*(1L<<15)) |
| 23 |
– |
|
| 25 |
|
#define abs(i) ((i) < 0 ? -(i) : (i)) |
| 26 |
|
|
| 27 |
|
RTREE qtrunk; /* our quadtree trunk */ |
| 103 |
|
} |
| 104 |
|
|
| 105 |
|
|
| 106 |
< |
#define LEAFSIZ (3*sizeof(float)+2*sizeof(short)+\ |
| 106 |
> |
#define LEAFSIZ (3*sizeof(float)+sizeof(int4)+\ |
| 107 |
|
sizeof(TMbright)+6*sizeof(BYTE)) |
| 108 |
|
|
| 109 |
|
int |
| 130 |
|
return(0); |
| 131 |
|
/* assign larger alignment types earlier */ |
| 132 |
|
qtL.wp = (float (*)[3])qtL.base; |
| 133 |
< |
qtL.wd = (short (*)[2])(qtL.wp + n); |
| 133 |
> |
qtL.wd = (int4 *)(qtL.wp + n); |
| 134 |
|
qtL.brt = (TMbright *)(qtL.wd + n); |
| 135 |
|
qtL.chr = (BYTE (*)[3])(qtL.brt + n); |
| 136 |
|
qtL.rgb = (BYTE (*)[3])(qtL.chr + n); |
| 203 |
|
} |
| 204 |
|
|
| 205 |
|
|
| 206 |
< |
static |
| 207 |
< |
encodedir(pa, dv) /* encode a normalized direction vector */ |
| 208 |
< |
short pa[2]; |
| 206 |
> |
#define DCSCALE 11585.2 /* (1<<13)*sqrt(2) */ |
| 207 |
> |
#define FXNEG 01 |
| 208 |
> |
#define FYNEG 02 |
| 209 |
> |
#define FZNEG 04 |
| 210 |
> |
#define F1X 010 |
| 211 |
> |
#define F2Z 020 |
| 212 |
> |
#define F1SFT 5 |
| 213 |
> |
#define F2SFT 18 |
| 214 |
> |
#define FMASK 0x1fff |
| 215 |
> |
|
| 216 |
> |
static int4 |
| 217 |
> |
encodedir(dv) /* encode a normalized direction vector */ |
| 218 |
|
FVECT dv; |
| 219 |
|
{ |
| 220 |
< |
pa[1] = 0; |
| 221 |
< |
if (dv[2] >= 1.) |
| 222 |
< |
pa[0] = (1L<<15)-1; |
| 223 |
< |
else if (dv[2] <= -1.) |
| 224 |
< |
pa[0] = -((1L<<15)-1); |
| 225 |
< |
else { |
| 226 |
< |
pa[0] = ((1L<<15)-1)/(PI/2.) * asin(dv[2]); |
| 227 |
< |
pa[1] = ((1L<<15)-1)/PI * atan2(dv[1], dv[0]); |
| 220 |
> |
register int4 dc = 0; |
| 221 |
> |
int cd[3], cm; |
| 222 |
> |
register int i; |
| 223 |
> |
|
| 224 |
> |
for (i = 0; i < 3; i++) |
| 225 |
> |
if (dv[i] < 0.) { |
| 226 |
> |
cd[i] = dv[i] * -DCSCALE; |
| 227 |
> |
dc |= 1<<i; |
| 228 |
> |
} else |
| 229 |
> |
cd[i] = dv[i] * DCSCALE; |
| 230 |
> |
if (cd[0] <= cd[1]) { |
| 231 |
> |
dc |= F1X | cd[0] << F1SFT; |
| 232 |
> |
cm = cd[1]; |
| 233 |
> |
} else { |
| 234 |
> |
dc |= cd[1] << F1SFT; |
| 235 |
> |
cm = cd[0]; |
| 236 |
|
} |
| 237 |
+ |
if (cd[2] <= cm) |
| 238 |
+ |
dc |= F2Z | cd[2] << F2SFT; |
| 239 |
+ |
else |
| 240 |
+ |
dc |= cm << F2SFT; |
| 241 |
+ |
return(dc); |
| 242 |
|
} |
| 243 |
|
|
| 244 |
|
|
| 245 |
< |
#define ALTSHFT 5 |
| 246 |
< |
#define NALT (1<<ALTSHFT) |
| 247 |
< |
#define azisft(alt) azisftab[abs(alt)>>(15-ALTSHFT)] |
| 245 |
> |
static |
| 246 |
> |
decodedir(dv, dc) /* decode a normalized direction vector */ |
| 247 |
> |
register FVECT dv; /* returned */ |
| 248 |
> |
register int4 dc; |
| 249 |
> |
{ |
| 250 |
> |
double d1, d2, der; |
| 251 |
|
|
| 252 |
< |
static unsigned short azisftab[NALT]; |
| 252 |
> |
d1 = ((dc>>F1SFT & FMASK)+.5)/DCSCALE; |
| 253 |
> |
d2 = ((dc>>F2SFT & FMASK)+.5)/DCSCALE; |
| 254 |
> |
der = sqrt(1. - d1*d1 - d2*d2); |
| 255 |
> |
if (dc & F1X) { |
| 256 |
> |
dv[0] = d1; |
| 257 |
> |
if (dc & F2Z) { dv[1] = der; dv[2] = d2; } |
| 258 |
> |
else { dv[1] = d2; dv[2] = der; } |
| 259 |
> |
} else { |
| 260 |
> |
dv[1] = d1; |
| 261 |
> |
if (dc & F2Z) { dv[0] = der; dv[2] = d2; } |
| 262 |
> |
else { dv[0] = d2; dv[2] = der; } |
| 263 |
> |
} |
| 264 |
> |
if (dc & FXNEG) dv[0] = -dv[0]; |
| 265 |
> |
if (dc & FYNEG) dv[1] = -dv[1]; |
| 266 |
> |
if (dc & FZNEG) dv[2] = -dv[2]; |
| 267 |
> |
} |
| 268 |
|
|
| 269 |
< |
static |
| 270 |
< |
azisftinit(alt) /* initialize azimuth scale factor table */ |
| 271 |
< |
int alt; |
| 269 |
> |
|
| 270 |
> |
static double |
| 271 |
> |
dir2diff(dc1, dc2) /* relative radians^2 between directions */ |
| 272 |
> |
int4 dc1, dc2; |
| 273 |
|
{ |
| 274 |
< |
register int i; |
| 274 |
> |
FVECT v1, v2; |
| 275 |
|
|
| 276 |
< |
for (i = NALT; i--; ) |
| 277 |
< |
azisftab[i] = 2.*(1L<<15) * cos(PI/2.*(i+.5)/NALT); |
| 278 |
< |
return(azisft(alt)); |
| 276 |
> |
decodedir(v1, dc1); |
| 277 |
> |
decodedir(v2, dc2); |
| 278 |
> |
|
| 279 |
> |
return(2. - 2.*DOT(v1,v2)); |
| 280 |
|
} |
| 281 |
|
|
| 239 |
– |
#define azisf(alt) (azisftab[0] ? azisft(alt) : azisftinit(alt)) >> 15 |
| 282 |
|
|
| 283 |
< |
static long |
| 284 |
< |
dir2diff(pa1, pa2) /* relative distance^2 between directions */ |
| 285 |
< |
short pa1[2], pa2[2]; |
| 283 |
> |
static double |
| 284 |
> |
fdir2diff(dc1, v2) /* relative radians^2 between directions */ |
| 285 |
> |
int4 dc1; |
| 286 |
> |
register FVECT v2; |
| 287 |
|
{ |
| 288 |
< |
long altd2, azid2; |
| 246 |
< |
int alt; |
| 288 |
> |
FVECT v1; |
| 289 |
|
|
| 290 |
< |
altd2 = pa1[0] - pa2[0]; /* get altitude difference^2 */ |
| 291 |
< |
altd2 *= altd2; |
| 292 |
< |
if (altd2 > MAXDIFF2) |
| 251 |
< |
return(altd2); /* too large already */ |
| 252 |
< |
azid2 = pa1[1] - pa2[1]; /* get adjusted azimuth difference^2 */ |
| 253 |
< |
if (azid2 < 0) azid2 = -azid2; |
| 254 |
< |
if (azid2 >= 1L<<15) { /* wrap sphere */ |
| 255 |
< |
azid2 -= 1L<<16; |
| 256 |
< |
if (azid2 < 0) azid2 = -azid2; |
| 257 |
< |
} |
| 258 |
< |
alt = (pa1[0]+pa2[0])/2; |
| 259 |
< |
azid2 = azid2*azisf(alt); /* evaluation order is important */ |
| 260 |
< |
azid2 *= azid2; |
| 261 |
< |
return(altd2 + azid2); |
| 290 |
> |
decodedir(v1, dc1); |
| 291 |
> |
|
| 292 |
> |
return(2. - 2.*DOT(v1,v2)); |
| 293 |
|
} |
| 294 |
|
|
| 295 |
|
|
| 337 |
|
register RTREE *tp = &qtrunk; |
| 338 |
|
int x0=0, y0=0, x1=odev.hres, y1=odev.vres; |
| 339 |
|
int lo = -1; |
| 340 |
< |
long d2; |
| 310 |
< |
short dc[2]; |
| 340 |
> |
double d2; |
| 341 |
|
int x, y, mx, my; |
| 342 |
|
double z; |
| 343 |
< |
FVECT ip, wp; |
| 343 |
> |
FVECT ip, wp, vd; |
| 344 |
|
register int q; |
| 345 |
|
/* compute leaf location in view */ |
| 346 |
|
VCOPY(wp, qtL.wp[li]); |
| 347 |
|
viewloc(ip, &odev.v, wp); |
| 348 |
|
if (ip[2] <= 0. || ip[0] < 0. || ip[0] >= 1. |
| 349 |
|
|| ip[1] < 0. || ip[1] >= 1.) |
| 350 |
< |
return(0); /* behind or outside view */ |
| 350 |
> |
return(-1); /* behind or outside view */ |
| 351 |
|
#ifdef DEBUG |
| 352 |
|
if (odev.v.type == VT_PAR | odev.v.vfore > FTINY) |
| 353 |
|
error(INTERNAL, "bad view assumption in addleaf"); |
| 354 |
|
#endif |
| 355 |
|
for (q = 0; q < 3; q++) |
| 356 |
< |
wp[q] = (wp[q] - odev.v.vp[q])/ip[2]; |
| 357 |
< |
encodedir(dc, wp); /* compute pixel direction */ |
| 358 |
< |
d2 = dir2diff(dc, qtL.wd[li]); |
| 356 |
> |
vd[q] = (wp[q] - odev.v.vp[q])/ip[2]; |
| 357 |
> |
d2 = fdir2diff(qtL.wd[li], vd); |
| 358 |
> |
#ifdef MAXDIFF2 |
| 359 |
|
if (d2 > MAXDIFF2) |
| 360 |
|
return(0); /* leaf dir. too far off */ |
| 361 |
+ |
#endif |
| 362 |
|
x = ip[0] * odev.hres; |
| 363 |
|
y = ip[1] * odev.vres; |
| 364 |
|
z = ip[2]; |
| 391 |
|
if (z > (1.+qtDepthEps)*ip[2]) |
| 392 |
|
return(0); /* old one closer */ |
| 393 |
|
if (z >= (1.-qtDepthEps)*ip[2] && |
| 394 |
< |
dir2diff(dc, qtL.wd[lo]) < d2) |
| 394 |
> |
fdir2diff(qtL.wd[lo], vd) < d2) |
| 395 |
|
return(0); /* old one better */ |
| 396 |
|
tp->k[q].li = li; /* else new one is */ |
| 397 |
|
tp->flgs |= CHF(q); |
| 405 |
|
my = ip[1] * odev.vres; |
| 406 |
|
if (mx >= (x0 + x1) >> 1) q |= 01; |
| 407 |
|
if (my >= (y0 + y1) >> 1) q |= 02; |
| 408 |
+ |
tp->flgs = CH_ANY|LFF(q); /* all new */ |
| 409 |
|
tp->k[q].li = lo; |
| 378 |
– |
tp->flgs |= LFF(q)|CH_ANY; /* all new */ |
| 410 |
|
} |
| 411 |
|
return(1); /* done */ |
| 412 |
|
} |
| 420 |
|
|
| 421 |
|
li = newleaf(); |
| 422 |
|
VCOPY(qtL.wp[li], p); |
| 423 |
< |
encodedir(qtL.wd[li], v); |
| 423 |
> |
qtL.wd[li] = encodedir(v); |
| 424 |
|
tmCvColrs(&qtL.brt[li], qtL.chr[li], c, 1); |
| 425 |
|
if (!addleaf(li)) |
| 426 |
|
ungetleaf(li); |
