| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id$"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* sm_qtree.c: adapted from octree.c from radiance code |
| 6 |
*/ |
| 7 |
/* |
| 8 |
* octree.c - routines dealing with octrees and cubes. |
| 9 |
* |
| 10 |
* 7/28/85 |
| 11 |
*/ |
| 12 |
|
| 13 |
#include "standard.h" |
| 14 |
#include "sm_flag.h" |
| 15 |
#include "sm_geom.h" |
| 16 |
#include "object.h" |
| 17 |
#include "sm_qtree.h" |
| 18 |
|
| 19 |
QUADTREE *quad_block[QT_MAX_BLK]; /* our quadtree */ |
| 20 |
static QUADTREE quad_free_list = EMPTY; /* freed octree nodes */ |
| 21 |
static QUADTREE treetop = 0; /* next free node */ |
| 22 |
int4 *quad_flag= NULL; /* quadtree flags */ |
| 23 |
|
| 24 |
|
| 25 |
qtremovelast(qt,id) |
| 26 |
QUADTREE qt; |
| 27 |
OBJECT id; |
| 28 |
{ |
| 29 |
#ifdef DEBUG |
| 30 |
if(qtqueryset(qt)[(*(qtqueryset(qt)))] != id) |
| 31 |
error(CONSISTENCY,"not removed\n"); |
| 32 |
#endif |
| 33 |
((*(qtqueryset(qt)))--); |
| 34 |
} |
| 35 |
QUADTREE |
| 36 |
qtAlloc() /* allocate a quadtree */ |
| 37 |
{ |
| 38 |
register QUADTREE freet; |
| 39 |
|
| 40 |
if ((freet = quad_free_list) != EMPTY) |
| 41 |
{ |
| 42 |
quad_free_list = QT_NTH_CHILD(freet, 0); |
| 43 |
return(freet); |
| 44 |
} |
| 45 |
freet = treetop; |
| 46 |
if (QT_BLOCK_INDEX(freet) == 0) |
| 47 |
{ |
| 48 |
if (QT_BLOCK(freet) >= QT_MAX_BLK) |
| 49 |
return(EMPTY); |
| 50 |
if ((quad_block[QT_BLOCK(freet)] = (QUADTREE *)malloc( |
| 51 |
QT_BLOCK_SIZE*4*sizeof(QUADTREE))) == NULL) |
| 52 |
error(SYSTEM,"qtAlloc(): Unable to allocate memory\n"); |
| 53 |
|
| 54 |
/* Realloc the per/node flags */ |
| 55 |
quad_flag = (int4 *)realloc((void *)quad_flag, |
| 56 |
(QT_BLOCK(freet)+1)*((QT_BLOCK_SIZE+7)>>3)); |
| 57 |
if (quad_flag == NULL) |
| 58 |
error(SYSTEM,"qtAlloc(): Unable to allocate memory\n"); |
| 59 |
} |
| 60 |
treetop += 4; |
| 61 |
return(freet); |
| 62 |
} |
| 63 |
|
| 64 |
|
| 65 |
qtClearAllFlags() /* clear all quadtree branch flags */ |
| 66 |
{ |
| 67 |
if (!treetop) |
| 68 |
return; |
| 69 |
|
| 70 |
/* Clear the node flags*/ |
| 71 |
bzero((char *)quad_flag, (QT_BLOCK(treetop-4)+1)*((QT_BLOCK_SIZE+7)>>3)); |
| 72 |
/* Clear set flags */ |
| 73 |
qtclearsetflags(); |
| 74 |
} |
| 75 |
|
| 76 |
qtFree(qt) /* free a quadtree */ |
| 77 |
register QUADTREE qt; |
| 78 |
{ |
| 79 |
register int i; |
| 80 |
|
| 81 |
if (!QT_IS_TREE(qt)) |
| 82 |
{ |
| 83 |
qtfreeleaf(qt); |
| 84 |
return; |
| 85 |
} |
| 86 |
for (i = 0; i < 4; i++) |
| 87 |
qtFree(QT_NTH_CHILD(qt, i)); |
| 88 |
QT_NTH_CHILD(qt, 0) = quad_free_list; |
| 89 |
quad_free_list = qt; |
| 90 |
} |
| 91 |
|
| 92 |
|
| 93 |
qtDone() /* free EVERYTHING */ |
| 94 |
{ |
| 95 |
register int i; |
| 96 |
|
| 97 |
qtfreeleaves(); |
| 98 |
for (i = 0; i < QT_MAX_BLK; i++) |
| 99 |
{ |
| 100 |
if (quad_block[i] == NULL) |
| 101 |
break; |
| 102 |
free((void *)quad_block[i]); |
| 103 |
quad_block[i] = NULL; |
| 104 |
} |
| 105 |
/* Free the flags */ |
| 106 |
if (i) free((void *)quad_flag); |
| 107 |
quad_flag = NULL; |
| 108 |
quad_free_list = EMPTY; |
| 109 |
treetop = 0; |
| 110 |
} |
| 111 |
|
| 112 |
/* |
| 113 |
* bary_parent(coord,i) : Set coord to be value of pt at one level up in |
| 114 |
* quadtree, given it was the ith child |
| 115 |
* BCOORD coord[3]; :barycentric coordinates of point, also will hold |
| 116 |
* result as side effect |
| 117 |
* int i; :designates which child coord was |
| 118 |
*/ |
| 119 |
bary_parent(coord,i) |
| 120 |
BCOORD coord[3]; |
| 121 |
int i; |
| 122 |
{ |
| 123 |
switch(i) { |
| 124 |
case 0: |
| 125 |
/* update bary for child */ |
| 126 |
coord[0] = (coord[0] >> 1) + MAXBCOORD4; |
| 127 |
coord[1] >>= 1; |
| 128 |
coord[2] >>= 1; |
| 129 |
break; |
| 130 |
case 1: |
| 131 |
coord[0] >>= 1; |
| 132 |
coord[1] = (coord[1] >> 1) + MAXBCOORD4; |
| 133 |
coord[2] >>= 1; |
| 134 |
break; |
| 135 |
|
| 136 |
case 2: |
| 137 |
coord[0] >>= 1; |
| 138 |
coord[1] >>= 1; |
| 139 |
coord[2] = (coord[2] >> 1) + MAXBCOORD4; |
| 140 |
break; |
| 141 |
|
| 142 |
case 3: |
| 143 |
coord[0] = MAXBCOORD4 - (coord[0] >> 1); |
| 144 |
coord[1] = MAXBCOORD4 - (coord[1] >> 1); |
| 145 |
coord[2] = MAXBCOORD4 - (coord[2] >> 1); |
| 146 |
break; |
| 147 |
#ifdef DEBUG |
| 148 |
default: |
| 149 |
eputs("bary_parent():Invalid child\n"); |
| 150 |
break; |
| 151 |
#endif |
| 152 |
} |
| 153 |
} |
| 154 |
|
| 155 |
/* |
| 156 |
* bary_from_child(coord,child,next): Given that coord was the (child) child |
| 157 |
* of the quadtree node, calculate what the (next) child |
| 158 |
* is at the same level. |
| 159 |
* BCOORD coord[3]; :At current level (child)th child of node,will also hold |
| 160 |
* result as side effect |
| 161 |
* int child,next; :Which child coord was (child), and which one |
| 162 |
* is now desired(next) |
| 163 |
*/ |
| 164 |
bary_from_child(coord,child,next) |
| 165 |
BCOORD coord[3]; |
| 166 |
int child,next; |
| 167 |
{ |
| 168 |
#ifdef DEBUG |
| 169 |
if(child <0 || child > 3) |
| 170 |
{ |
| 171 |
eputs("bary_from_child():Invalid child\n"); |
| 172 |
return; |
| 173 |
} |
| 174 |
if(next <0 || next > 3) |
| 175 |
{ |
| 176 |
eputs("bary_from_child():Invalid next\n"); |
| 177 |
return; |
| 178 |
} |
| 179 |
#endif |
| 180 |
if(next == child) |
| 181 |
return; |
| 182 |
|
| 183 |
switch(child){ |
| 184 |
case 0: |
| 185 |
coord[0] = 0; |
| 186 |
coord[1] = MAXBCOORD2 - coord[1]; |
| 187 |
coord[2] = MAXBCOORD2 - coord[2]; |
| 188 |
break; |
| 189 |
case 1: |
| 190 |
coord[0] = MAXBCOORD2 - coord[0]; |
| 191 |
coord[1] = 0; |
| 192 |
coord[2] = MAXBCOORD2 - coord[2]; |
| 193 |
break; |
| 194 |
case 2: |
| 195 |
coord[0] = MAXBCOORD2 - coord[0]; |
| 196 |
coord[1] = MAXBCOORD2 - coord[1]; |
| 197 |
coord[2] = 0; |
| 198 |
break; |
| 199 |
case 3: |
| 200 |
switch(next){ |
| 201 |
case 0: |
| 202 |
coord[0] = 0; |
| 203 |
coord[1] = MAXBCOORD2 - coord[1]; |
| 204 |
coord[2] = MAXBCOORD2 - coord[2]; |
| 205 |
break; |
| 206 |
case 1: |
| 207 |
coord[0] = MAXBCOORD2 - coord[0]; |
| 208 |
coord[1] = 0; |
| 209 |
coord[2] = MAXBCOORD2 - coord[2]; |
| 210 |
break; |
| 211 |
case 2: |
| 212 |
coord[0] = MAXBCOORD2 - coord[0]; |
| 213 |
coord[1] = MAXBCOORD2 - coord[1]; |
| 214 |
coord[2] = 0; |
| 215 |
break; |
| 216 |
} |
| 217 |
break; |
| 218 |
} |
| 219 |
} |
| 220 |
|
| 221 |
/* |
| 222 |
* int |
| 223 |
* bary_child(coord): Return which child coord is of node at current level |
| 224 |
* As side effect recalculate coord at next level |
| 225 |
* BCOORD coord[3]; :At current level coordinates of point, will also set |
| 226 |
* to coords at next level as side effect |
| 227 |
*/ |
| 228 |
int |
| 229 |
bary_child(coord) |
| 230 |
BCOORD coord[3]; |
| 231 |
{ |
| 232 |
int i; |
| 233 |
|
| 234 |
if(coord[0] > MAXBCOORD4) |
| 235 |
{ |
| 236 |
/* update bary for child */ |
| 237 |
coord[0] = (coord[0]<< 1) - MAXBCOORD2; |
| 238 |
coord[1] <<= 1; |
| 239 |
coord[2] <<= 1; |
| 240 |
return(0); |
| 241 |
} |
| 242 |
else |
| 243 |
if(coord[1] > MAXBCOORD4) |
| 244 |
{ |
| 245 |
coord[0] <<= 1; |
| 246 |
coord[1] = (coord[1] << 1) - MAXBCOORD2; |
| 247 |
coord[2] <<= 1; |
| 248 |
return(1); |
| 249 |
} |
| 250 |
else |
| 251 |
if(coord[2] > MAXBCOORD4) |
| 252 |
{ |
| 253 |
coord[0] <<= 1; |
| 254 |
coord[1] <<= 1; |
| 255 |
coord[2] = (coord[2] << 1) - MAXBCOORD2; |
| 256 |
return(2); |
| 257 |
} |
| 258 |
else |
| 259 |
{ |
| 260 |
coord[0] = MAXBCOORD2 - (coord[0] << 1); |
| 261 |
coord[1] = MAXBCOORD2 - (coord[1] << 1); |
| 262 |
coord[2] = MAXBCOORD2 - (coord[2] << 1); |
| 263 |
return(3); |
| 264 |
} |
| 265 |
} |
| 266 |
|
| 267 |
|
| 268 |
|
| 269 |
QUADTREE |
| 270 |
qtLocate(qt,bcoord) |
| 271 |
QUADTREE qt; |
| 272 |
BCOORD bcoord[3]; |
| 273 |
{ |
| 274 |
int i; |
| 275 |
|
| 276 |
if(QT_IS_TREE(qt)) |
| 277 |
{ |
| 278 |
i = bary_child(bcoord); |
| 279 |
|
| 280 |
return(qtLocate(QT_NTH_CHILD(qt,i),bcoord)); |
| 281 |
} |
| 282 |
else |
| 283 |
return(qt); |
| 284 |
} |
| 285 |
|
| 286 |
int |
| 287 |
move_to_nbr(b,db0,db1,db2,tptr) |
| 288 |
BCOORD b[3]; |
| 289 |
BDIR db0,db1,db2; |
| 290 |
double *tptr; |
| 291 |
{ |
| 292 |
double t,dt; |
| 293 |
BCOORD bc; |
| 294 |
int nbr; |
| 295 |
|
| 296 |
nbr = -1; |
| 297 |
*tptr = 0.0; |
| 298 |
/* Advance to next node */ |
| 299 |
if(b[0]==0 && db0 < 0) |
| 300 |
return(0); |
| 301 |
if(b[1]==0 && db1 < 0) |
| 302 |
return(1); |
| 303 |
if(b[2]==0 && db2 < 0) |
| 304 |
return(2); |
| 305 |
if(db0 < 0) |
| 306 |
{ |
| 307 |
t = ((double)b[0])/-db0; |
| 308 |
nbr = 0; |
| 309 |
} |
| 310 |
else |
| 311 |
t = MAXFLOAT; |
| 312 |
if(db1 < 0) |
| 313 |
{ |
| 314 |
dt = ((double)b[1])/-db1; |
| 315 |
if( dt < t) |
| 316 |
{ |
| 317 |
t = dt; |
| 318 |
nbr = 1; |
| 319 |
} |
| 320 |
} |
| 321 |
if(db2 < 0) |
| 322 |
{ |
| 323 |
dt = ((double)b[2])/-db2; |
| 324 |
if( dt < t) |
| 325 |
{ |
| 326 |
t = dt; |
| 327 |
nbr = 2; |
| 328 |
} |
| 329 |
} |
| 330 |
*tptr = t; |
| 331 |
return(nbr); |
| 332 |
} |
| 333 |
|
| 334 |
qtTrace_ray(qt,b,db0,db1,db2,nextptr,sign,sfactor,func,f) |
| 335 |
QUADTREE qt; |
| 336 |
BCOORD b[3]; |
| 337 |
BDIR db0,db1,db2; |
| 338 |
int *nextptr; |
| 339 |
int sign,sfactor; |
| 340 |
FUNC func; |
| 341 |
int *f; |
| 342 |
{ |
| 343 |
int i,found; |
| 344 |
QUADTREE child; |
| 345 |
int nbr,next,w; |
| 346 |
double t; |
| 347 |
|
| 348 |
if(QT_IS_TREE(qt)) |
| 349 |
{ |
| 350 |
/* Find the appropriate child and reset the coord */ |
| 351 |
i = bary_child(b); |
| 352 |
|
| 353 |
for(;;) |
| 354 |
{ |
| 355 |
child = QT_NTH_CHILD(qt,i); |
| 356 |
if(i != 3) |
| 357 |
qtTrace_ray(child,b,db0,db1,db2,nextptr,sign,sfactor+1,func,f); |
| 358 |
else |
| 359 |
/* If the center cell- must flip direction signs */ |
| 360 |
qtTrace_ray(child,b,-db0,-db1,-db2,nextptr,1-sign,sfactor+1,func,f); |
| 361 |
|
| 362 |
if(QT_FLAG_IS_DONE(*f)) |
| 363 |
return; |
| 364 |
/* If in same block: traverse */ |
| 365 |
if(i==3) |
| 366 |
next = *nextptr; |
| 367 |
else |
| 368 |
if(*nextptr == i) |
| 369 |
next = 3; |
| 370 |
else |
| 371 |
{ |
| 372 |
/* reset the barycentric coordinates in the parents*/ |
| 373 |
bary_parent(b,i); |
| 374 |
/* Else pop up to parent and traverse from there */ |
| 375 |
return(qt); |
| 376 |
} |
| 377 |
bary_from_child(b,i,next); |
| 378 |
i = next; |
| 379 |
} |
| 380 |
} |
| 381 |
else |
| 382 |
{ |
| 383 |
#ifdef TEST_DRIVER |
| 384 |
if(Pick_cnt < 500) |
| 385 |
Pick_q[Pick_cnt++]=qt; |
| 386 |
#endif; |
| 387 |
F_FUNC(func)(qt,F_ARGS(func),f); |
| 388 |
if(QT_FLAG_IS_DONE(*f)) |
| 389 |
return; |
| 390 |
/* Advance to next node */ |
| 391 |
nbr = move_to_nbr(b,db0,db1,db2,&t); |
| 392 |
|
| 393 |
if(nbr==-1) |
| 394 |
{ |
| 395 |
QT_FLAG_SET_DONE(*f); |
| 396 |
return; |
| 397 |
} |
| 398 |
b[0] += (BCOORD)(t *db0); |
| 399 |
b[1] += (BCOORD)(t *db1); |
| 400 |
b[2] += (BCOORD)(t *db2); |
| 401 |
*nextptr = nbr; |
| 402 |
return; |
| 403 |
|
| 404 |
} |
| 405 |
} |
| 406 |
|
| 407 |
#define TEST_INT(tl,th,d,q0,q1,h,l) \ |
| 408 |
tl=d>q0;th=d<q1; if(tl&&th) goto Lfunc_call; \ |
| 409 |
if(tl) if(l) goto Lfunc_call; else h=TRUE; \ |
| 410 |
if(th) if(h) goto Lfunc_call; else l = TRUE; \ |
| 411 |
if(th) if(h) goto Lfunc_call; else l = TRUE; |
| 412 |
|
| 413 |
/* Leaf node: Do definitive test */ |
| 414 |
QUADTREE |
| 415 |
qtLeaf_insert_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
| 416 |
scale, s0,s1,s2,sq0,sq1,sq2,f,n) |
| 417 |
int root; |
| 418 |
QUADTREE qt; |
| 419 |
BCOORD q0[3],q1[3],q2[3]; |
| 420 |
BCOORD t0[3],t1[3],t2[3]; |
| 421 |
BCOORD dt10[3],dt21[3],dt02[3]; |
| 422 |
unsigned int scale,s0,s1,s2,sq0,sq1,sq2; |
| 423 |
FUNC f; |
| 424 |
int n; |
| 425 |
{ |
| 426 |
double db; |
| 427 |
unsigned int e0,e1,e2; |
| 428 |
char al,ah,bl,bh,cl,ch,testl,testh; |
| 429 |
char test_t0t1,test_t1t2,test_t2t0; |
| 430 |
BCOORD a,b,c; |
| 431 |
|
| 432 |
/* First check if can trivial accept: if vertex in cell */ |
| 433 |
if(s0 & s1 & s2) |
| 434 |
{ |
| 435 |
goto Lfunc_call; |
| 436 |
} |
| 437 |
/* Assumption: Could not trivial reject*/ |
| 438 |
/* IF any coords lie on edge- must be in if couldnt reject */ |
| 439 |
a = q1[0];b= q0[1]; c= q0[2]; |
| 440 |
if(t0[0]== a || t0[1] == b || t0[2] == c) |
| 441 |
{ |
| 442 |
goto Lfunc_call; |
| 443 |
} |
| 444 |
if(t1[0]== a || t1[1] == b || t1[2] == c) |
| 445 |
{ |
| 446 |
goto Lfunc_call; |
| 447 |
} |
| 448 |
if(t2[0]== a || t2[1] == b || t2[2] == c) |
| 449 |
{ |
| 450 |
goto Lfunc_call; |
| 451 |
} |
| 452 |
/* Test for edge crossings */ |
| 453 |
/* Test t0t1,t1t2,t2t0 against a */ |
| 454 |
/* Calculate edge crossings */ |
| 455 |
e0 = (s0 ^ ((s0 >> 1) | (s0 << 2 & 4))); |
| 456 |
/* See if edge can be trivially rejected from intersetion testing */ |
| 457 |
test_t0t1 = !(((s0 & 6)==0) || ((s1 & 6)==0)|| ((s2 & 6)==0) || |
| 458 |
((sq0 & 6)==6) ||((sq1 & 6)==6)|| ((sq2 & 6)==6)); |
| 459 |
bl=bh=0; |
| 460 |
if(test_t0t1 && (e0 & 2) ) |
| 461 |
{ |
| 462 |
/* Must do double calculation to avoid overflow */ |
| 463 |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
| 464 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 465 |
} |
| 466 |
test_t1t2= !(((s0 & 3)==0) || ((s1 & 3)==0)|| ((s2 & 3)==0) || |
| 467 |
((sq0 & 3)==3) ||((sq1 & 3)==3)|| ((sq2 & 3)==3)); |
| 468 |
if(test_t1t2 && (e0 & 1)) |
| 469 |
{ /* test t1t2 against a */ |
| 470 |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
| 471 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 472 |
} |
| 473 |
test_t2t0 = !(((s0 & 5)==0) || ((s1 & 5)==0)|| ((s2 & 5)==0) || |
| 474 |
((sq0 & 5)==5) ||((sq1 & 5)==5)|| ((sq2 & 5)==5)); |
| 475 |
if(test_t2t0 && (e0 & 4)) |
| 476 |
{ |
| 477 |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
| 478 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 479 |
} |
| 480 |
e1 = (s1 ^ ((s1 >> 1) | (s1 << 2 & 4))); |
| 481 |
cl = ch = 0; |
| 482 |
if(test_t0t1 && (e1 & 2)) |
| 483 |
{/* test t0t1 against b */ |
| 484 |
db = t0[2] + dt10[2]*((double)(b-t0[1]))/dt10[1]; |
| 485 |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
| 486 |
} |
| 487 |
if(test_t1t2 && (e1 & 1)) |
| 488 |
{/* test t1t2 against b */ |
| 489 |
db = t1[2] + dt21[2]*((double)(q0[1] - t1[1]))/dt21[1]; |
| 490 |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
| 491 |
} |
| 492 |
if(test_t2t0 && (e1 & 4)) |
| 493 |
{/* test t2t0 against b */ |
| 494 |
db = t2[2] + dt02[2]*((double)(q0[1] - t2[1]))/dt02[1]; |
| 495 |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
| 496 |
} |
| 497 |
|
| 498 |
/* test edges against c */ |
| 499 |
e2 = (s2 ^ ((s2 >> 1) | (s2 << 2 & 4))); |
| 500 |
al = ah = 0; |
| 501 |
if(test_t0t1 && (e2 & 2)) |
| 502 |
{ /* test t0t1 against c */ |
| 503 |
db = t0[0] + dt10[0]*((double)(c-t0[2]))/dt10[2]; |
| 504 |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
| 505 |
} |
| 506 |
if(test_t1t2 && (e2 & 1)) |
| 507 |
{ |
| 508 |
db = t1[0] + dt21[0]*((double)(c - t1[2]))/dt21[2]; |
| 509 |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
| 510 |
} |
| 511 |
if(test_t2t0 && (e2 & 4)) |
| 512 |
{ /* test t2t0 against c */ |
| 513 |
db = t2[0] + dt02[0]*((double)(c - t2[2]))/dt02[2]; |
| 514 |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
| 515 |
} |
| 516 |
/* Only remaining case is if some edge trivially rejected */ |
| 517 |
if(!e0 || !e1 || !e2) |
| 518 |
return(qt); |
| 519 |
|
| 520 |
/* Only one/none got tested - pick either of other two/any two */ |
| 521 |
/* Only need to test one edge */ |
| 522 |
if(!test_t0t1 && (e0 & 2)) |
| 523 |
{ |
| 524 |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
| 525 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 526 |
} |
| 527 |
if(!test_t1t2 && (e0 & 1)) |
| 528 |
{/* test t1t2 against a */ |
| 529 |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
| 530 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 531 |
} |
| 532 |
if(!test_t2t0 && (e0 & 4)) |
| 533 |
{ |
| 534 |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
| 535 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 536 |
} |
| 537 |
|
| 538 |
return(qt); |
| 539 |
|
| 540 |
Lfunc_call: |
| 541 |
qt = f.func(f.argptr,root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
| 542 |
s0,s1,s2,sq0,sq1,sq2,0,f,n); |
| 543 |
return(qt); |
| 544 |
|
| 545 |
} |
| 546 |
|
| 547 |
|
| 548 |
|
| 549 |
/* Leaf node: Do definitive test */ |
| 550 |
QUADTREE |
| 551 |
qtLeaf_insert_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
| 552 |
scale, s0,s1,s2,sq0,sq1,sq2,f,n) |
| 553 |
int root; |
| 554 |
QUADTREE qt; |
| 555 |
BCOORD q0[3],q1[3],q2[3]; |
| 556 |
BCOORD t0[3],t1[3],t2[3]; |
| 557 |
BCOORD dt10[3],dt21[3],dt02[3]; |
| 558 |
unsigned int scale,s0,s1,s2,sq0,sq1,sq2; |
| 559 |
FUNC f; |
| 560 |
int n; |
| 561 |
{ |
| 562 |
double db; |
| 563 |
unsigned int e0,e1,e2; |
| 564 |
BCOORD a,b,c; |
| 565 |
double p0[2], p1[2],cp; |
| 566 |
char al,ah,bl,bh,cl,ch; |
| 567 |
char testl,testh,test_t0t1,test_t1t2,test_t2t0; |
| 568 |
unsigned int ls0,ls1,ls2; |
| 569 |
|
| 570 |
|
| 571 |
/* May have gotten passed trivial reject if one/two vertices are ON */ |
| 572 |
a = q1[0];b= q0[1]; c= q0[2]; |
| 573 |
SIDES_LESS(t0,t1,t2,ls0,ls1,ls2,a,b,c); |
| 574 |
|
| 575 |
/* First check if can trivial accept: if vertex in cell */ |
| 576 |
if(ls0 & ls1 & ls2) |
| 577 |
{ |
| 578 |
goto Lfunc_call; |
| 579 |
} |
| 580 |
if(ls0==0 || ls1 == 0 || ls2 ==0) |
| 581 |
return(qt); |
| 582 |
/* Assumption: Could not trivial reject*/ |
| 583 |
/* IF any coords lie on edge- must be in if couldnt reject */ |
| 584 |
|
| 585 |
if(t0[0]== a || t0[1] == b || t0[2] == c) |
| 586 |
{ |
| 587 |
goto Lfunc_call; |
| 588 |
} |
| 589 |
if(t1[0]== a || t1[1] == b || t1[2] == c) |
| 590 |
{ |
| 591 |
goto Lfunc_call; |
| 592 |
} |
| 593 |
if(t2[0]== a || t2[1] == b || t2[2] == c) |
| 594 |
{ |
| 595 |
goto Lfunc_call; |
| 596 |
} |
| 597 |
/* Test for edge crossings */ |
| 598 |
/* Test t0t1 against a,b,c */ |
| 599 |
/* First test if t0t1 can be trivially rejected */ |
| 600 |
/* If both edges are outside bounds- dont need to test */ |
| 601 |
|
| 602 |
/* Test t0t1,t1t2,t2t0 against a */ |
| 603 |
test_t0t1 = !(((ls0 & 6)==0) || ((ls1 & 6)==0)|| ((ls2 & 6)==0) || |
| 604 |
((sq0 & 6)==0) ||((sq1 & 6)==0)|| ((sq2 & 6)==0)); |
| 605 |
e0 = (ls0 ^ ((ls0 >> 1) | (ls0 << 2 & 4))); |
| 606 |
bl=bh=0; |
| 607 |
/* Test t0t1,t1t2,t2t0 against a */ |
| 608 |
if(test_t0t1 && (e0 & 2) ) |
| 609 |
{ |
| 610 |
db = t0[1] + dt10[1]*((double)(a-t0[0])/dt10[0]); |
| 611 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 612 |
} |
| 613 |
test_t1t2= !(((ls0 & 3)==0) || ((ls1 & 3)==0)|| ((ls2 & 3)==0) || |
| 614 |
((sq0 & 3)==0) ||((sq1 & 3)==0)|| ((sq2 & 3)==0)); |
| 615 |
if(test_t1t2 && (e0 & 1)) |
| 616 |
{ /* test t1t2 against a */ |
| 617 |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
| 618 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 619 |
} |
| 620 |
test_t2t0 = !(((ls0 & 5)==0) || ((ls1 & 5)==0)|| ((ls2 & 5)==0) || |
| 621 |
((sq0 & 5)==0) ||((sq1 & 5)==0)|| ((sq2 & 5)==0)); |
| 622 |
if(test_t2t0 && (e0 & 4)) |
| 623 |
{ |
| 624 |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
| 625 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 626 |
} |
| 627 |
cl = ch = 0; |
| 628 |
e1 = (ls1 ^ ((ls1 >> 1) | (ls1 << 2 & 4))); |
| 629 |
if(test_t0t1 && (e1 & 2)) |
| 630 |
{/* test t0t1 against b */ |
| 631 |
db = t0[2] + dt10[2]*(((double)(b-t0[1]))/dt10[1]); |
| 632 |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
| 633 |
} |
| 634 |
if(test_t1t2 && (e1 & 1)) |
| 635 |
{/* test t1t2 against b */ |
| 636 |
db = t1[2] + dt21[2]*((double)(b - t1[1]))/dt21[1]; |
| 637 |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
| 638 |
} |
| 639 |
if(test_t2t0 && (e1 & 4)) |
| 640 |
{/* test t2t0 against b */ |
| 641 |
db = t2[2] + dt02[2]*((double)(b - t2[1]))/dt02[1]; |
| 642 |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
| 643 |
} |
| 644 |
al = ah = 0; |
| 645 |
e2 = (ls2 ^ ((ls2 >> 1) | (ls2 << 2 & 4))); |
| 646 |
if(test_t0t1 && (e2 & 2)) |
| 647 |
{ /* test t0t1 against c */ |
| 648 |
db = t0[0] + dt10[0]*(((double)(c-t0[2]))/dt10[2]); |
| 649 |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
| 650 |
} |
| 651 |
if(test_t1t2 && (e2 & 1)) |
| 652 |
{ |
| 653 |
db = t1[0] + dt21[0]*((double)(c - t1[2]))/dt21[2]; |
| 654 |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
| 655 |
} |
| 656 |
if(test_t2t0 && (e2 & 4)) |
| 657 |
{ /* test t2t0 against c */ |
| 658 |
db = t2[0] + dt02[0]*((double)(c - t2[2]))/dt02[2]; |
| 659 |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
| 660 |
} |
| 661 |
/* Only remaining case is if some edge trivially rejected */ |
| 662 |
if(!e0 || !e1 || !e2) |
| 663 |
return(qt); |
| 664 |
|
| 665 |
/* Only one/none got tested - pick either of other two/any two */ |
| 666 |
/* Only need to test one edge */ |
| 667 |
if(!test_t0t1 && (e0 & 2)) |
| 668 |
{ |
| 669 |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
| 670 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 671 |
} |
| 672 |
if(!test_t1t2 && (e0 & 1)) |
| 673 |
{/* test t1t2 against a */ |
| 674 |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
| 675 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 676 |
} |
| 677 |
if(!test_t2t0 && (e0 & 4)) |
| 678 |
{ |
| 679 |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
| 680 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 681 |
} |
| 682 |
|
| 683 |
return(qt); |
| 684 |
Lfunc_call: |
| 685 |
qt = f.func(f.argptr,root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
| 686 |
s0,s1,s2,sq0,sq1,sq2,1,f,n); |
| 687 |
return(qt); |
| 688 |
} |
| 689 |
|
| 690 |
|
| 691 |
|
| 692 |
/* ASSUMPTION: that triangle t0,t1,t2 intersects quad cell q0,q1,q2 */ |
| 693 |
|
| 694 |
/*-------q2--------- sq2 |
| 695 |
/ \ |
| 696 |
s1 /sc \ s0 |
| 697 |
qb_____qa |
| 698 |
/ \ / \ |
| 699 |
\sq0/sa \ /sb \ /sq1 |
| 700 |
\ q0____qc____q1/ |
| 701 |
\ / |
| 702 |
\ s2 / |
| 703 |
*/ |
| 704 |
|
| 705 |
int Find_id=0; |
| 706 |
|
| 707 |
QUADTREE |
| 708 |
qtInsert_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
| 709 |
s0,s1,s2,sq0,sq1,sq2,f,n) |
| 710 |
int root; |
| 711 |
QUADTREE qt; |
| 712 |
BCOORD q0[3],q1[3],q2[3]; |
| 713 |
BCOORD t0[3],t1[3],t2[3]; |
| 714 |
BCOORD dt10[3],dt21[3],dt02[3]; |
| 715 |
BCOORD scale; |
| 716 |
unsigned int s0,s1,s2,sq0,sq1,sq2; |
| 717 |
FUNC f; |
| 718 |
int n; |
| 719 |
{ |
| 720 |
BCOORD a,b,c; |
| 721 |
BCOORD va[3],vb[3],vc[3]; |
| 722 |
unsigned int sa,sb,sc; |
| 723 |
|
| 724 |
/* If a tree: trivial reject and recurse on potential children */ |
| 725 |
if(QT_IS_TREE(qt)) |
| 726 |
{ |
| 727 |
/* Test against new a edge: if entirely to left: only need |
| 728 |
to visit child 0 |
| 729 |
*/ |
| 730 |
a = q1[0] + scale; |
| 731 |
b = q0[1] + scale; |
| 732 |
c = q0[2] + scale; |
| 733 |
|
| 734 |
SIDES_GTR(t0,t1,t2,sa,sb,sc,a,b,c); |
| 735 |
|
| 736 |
if(sa==7) |
| 737 |
{ |
| 738 |
vb[1] = q0[1]; |
| 739 |
vc[2] = q0[2]; |
| 740 |
vc[1] = b; |
| 741 |
vb[2] = c; |
| 742 |
vb[0] = vc[0] = a; |
| 743 |
QT_NTH_CHILD(qt,0) = qtInsert_tri(root,QT_NTH_CHILD(qt,0),q0,vc, |
| 744 |
vb,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,s1,s2,sq0,sb,sc,f,n+1); |
| 745 |
return(qt); |
| 746 |
} |
| 747 |
if(sb==7) |
| 748 |
{ |
| 749 |
va[0] = q1[0]; |
| 750 |
vc[2] = q0[2]; |
| 751 |
va[1] = vc[1] = b; |
| 752 |
va[2] = c; |
| 753 |
vc[0] = a; |
| 754 |
QT_NTH_CHILD(qt,1) = qtInsert_tri(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
| 755 |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n+1); |
| 756 |
return(qt); |
| 757 |
} |
| 758 |
if(sc==7) |
| 759 |
{ |
| 760 |
va[0] = q1[0]; |
| 761 |
vb[1] = q0[1]; |
| 762 |
va[1] = b; |
| 763 |
va[2] = vb[2] = c; |
| 764 |
vb[0] = a; |
| 765 |
QT_NTH_CHILD(qt,2) = qtInsert_tri(root,QT_NTH_CHILD(qt,2),vb,va, |
| 766 |
q2,t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n+1); |
| 767 |
return(qt); |
| 768 |
} |
| 769 |
|
| 770 |
va[0] = q1[0]; |
| 771 |
vb[1] = q0[1]; |
| 772 |
vc[2] = q0[2]; |
| 773 |
va[1] = vc[1] = b; |
| 774 |
va[2] = vb[2] = c; |
| 775 |
vb[0] = vc[0] = a; |
| 776 |
/* If outside of all edges: only need to Visit 3 */ |
| 777 |
if(sa==0 && sb==0 && sc==0) |
| 778 |
{ |
| 779 |
QT_NTH_CHILD(qt,3) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,3),va,vb, |
| 780 |
vc,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,sb,sc,s0,s1,s2,f,n+1); |
| 781 |
return(qt); |
| 782 |
} |
| 783 |
|
| 784 |
if(sa) |
| 785 |
QT_NTH_CHILD(qt,0) = qtInsert_tri(root,QT_NTH_CHILD(qt,0),q0,vc,vb,t0, |
| 786 |
t1,t2,dt10,dt21,dt02,scale>>1,sa,s1,s2,sq0,sb,sc,f,n+1); |
| 787 |
if(sb) |
| 788 |
QT_NTH_CHILD(qt,1) = qtInsert_tri(root,QT_NTH_CHILD(qt,1),vc,q1,va,t0, |
| 789 |
t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n+1); |
| 790 |
if(sc) |
| 791 |
QT_NTH_CHILD(qt,2) = qtInsert_tri(root,QT_NTH_CHILD(qt,2),vb,va,q2,t0, |
| 792 |
t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n+1); |
| 793 |
QT_NTH_CHILD(qt,3) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,3),va,vb,vc,t0, |
| 794 |
t1,t2,dt10,dt21,dt02,scale>>1,sa,sb,sc,s0,s1,s2,f,n+1); |
| 795 |
return(qt); |
| 796 |
} |
| 797 |
/* Leaf node: Do definitive test */ |
| 798 |
else |
| 799 |
return(qt = qtLeaf_insert_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
| 800 |
scale,s0,s1,s2,sq0,sq1,sq2,f,n)); |
| 801 |
} |
| 802 |
|
| 803 |
|
| 804 |
QUADTREE |
| 805 |
qtInsert_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
| 806 |
s0,s1,s2,sq0,sq1,sq2,f,n) |
| 807 |
int root; |
| 808 |
QUADTREE qt; |
| 809 |
BCOORD q0[3],q1[3],q2[3]; |
| 810 |
BCOORD t0[3],t1[3],t2[3]; |
| 811 |
BCOORD dt10[3],dt21[3],dt02[3]; |
| 812 |
BCOORD scale; |
| 813 |
unsigned int s0,s1,s2,sq0,sq1,sq2; |
| 814 |
FUNC f; |
| 815 |
int n; |
| 816 |
{ |
| 817 |
BCOORD a,b,c; |
| 818 |
BCOORD va[3],vb[3],vc[3]; |
| 819 |
unsigned int sa,sb,sc; |
| 820 |
|
| 821 |
/* If a tree: trivial reject and recurse on potential children */ |
| 822 |
if(QT_IS_TREE(qt)) |
| 823 |
{ |
| 824 |
/* Test against new a edge: if entirely to left: only need |
| 825 |
to visit child 0 |
| 826 |
*/ |
| 827 |
a = q1[0] - scale; |
| 828 |
b = q0[1] - scale; |
| 829 |
c = q0[2] - scale; |
| 830 |
|
| 831 |
SIDES_GTR(t0,t1,t2,sa,sb,sc,a,b,c); |
| 832 |
|
| 833 |
if(sa==0) |
| 834 |
{ |
| 835 |
vb[1] = q0[1]; |
| 836 |
vc[2] = q0[2]; |
| 837 |
vc[1] = b; |
| 838 |
vb[2] = c; |
| 839 |
vb[0] = vc[0] = a; |
| 840 |
|
| 841 |
QT_NTH_CHILD(qt,0) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,0),q0,vc, |
| 842 |
vb,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,s1,s2,sq0,sb,sc,f,n+1); |
| 843 |
return(qt); |
| 844 |
} |
| 845 |
if(sb==0) |
| 846 |
{ |
| 847 |
va[0] = q1[0]; |
| 848 |
vc[2] = q0[2]; |
| 849 |
va[1] = vc[1] = b; |
| 850 |
va[2] = c; |
| 851 |
vc[0] = a; |
| 852 |
QT_NTH_CHILD(qt,1) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
| 853 |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n+1); |
| 854 |
return(qt); |
| 855 |
} |
| 856 |
if(sc==0) |
| 857 |
{ |
| 858 |
va[0] = q1[0]; |
| 859 |
vb[1] = q0[1]; |
| 860 |
va[1] = b; |
| 861 |
va[2] = vb[2] = c; |
| 862 |
vb[0] = a; |
| 863 |
QT_NTH_CHILD(qt,2) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,2),vb,va, |
| 864 |
q2,t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n+1); |
| 865 |
return(qt); |
| 866 |
} |
| 867 |
va[0] = q1[0]; |
| 868 |
vb[1] = q0[1]; |
| 869 |
vc[2] = q0[2]; |
| 870 |
va[1] = vc[1] = b; |
| 871 |
va[2] = vb[2] = c; |
| 872 |
vb[0] = vc[0] = a; |
| 873 |
/* If outside of all edges: only need to Visit 3 */ |
| 874 |
if(sa==7 && sb==7 && sc==7) |
| 875 |
{ |
| 876 |
QT_NTH_CHILD(qt,3) = qtInsert_tri(root,QT_NTH_CHILD(qt,3),va,vb, |
| 877 |
vc,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,sb,sc,s0,s1,s2,f,n+1); |
| 878 |
return(qt); |
| 879 |
} |
| 880 |
if(sa!=7) |
| 881 |
QT_NTH_CHILD(qt,0) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,0),q0,vc,vb, |
| 882 |
t0,t1,t2,dt10,dt21,dt02,scale>>1,sa,s1,s2,sq0,sb,sc,f,n+1); |
| 883 |
if(sb!=7) |
| 884 |
QT_NTH_CHILD(qt,1) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
| 885 |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n+1); |
| 886 |
if(sc!=7) |
| 887 |
QT_NTH_CHILD(qt,2) = qtInsert_tri_rev(root,QT_NTH_CHILD(qt,2),vb,va,q2, |
| 888 |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n+1); |
| 889 |
|
| 890 |
QT_NTH_CHILD(qt,3) = qtInsert_tri(root,QT_NTH_CHILD(qt,3),va,vb,vc,t0,t1, |
| 891 |
t2,dt10,dt21,dt02,scale>>1,sa,sb,sc,s0,s1,s2,f,n+1); |
| 892 |
return(qt); |
| 893 |
} |
| 894 |
/* Leaf node: Do definitive test */ |
| 895 |
else |
| 896 |
return(qt = qtLeaf_insert_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
| 897 |
scale,s0,s1,s2,sq0,sq1,sq2,f,n)); |
| 898 |
} |
| 899 |
|
| 900 |
|
| 901 |
|
| 902 |
|
| 903 |
/*************************************************************************/ |
| 904 |
/* Visit code for applying functions: NOTE THIS IS THE SAME AS INSERT CODE: |
| 905 |
except sets flags: wanted insert to be as efficient as possible: so |
| 906 |
broke into two sets of routines. Also traverses only to n levels. |
| 907 |
*/ |
| 908 |
|
| 909 |
qtVisit_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
| 910 |
s0,s1,s2,sq0,sq1,sq2,f,n) |
| 911 |
int root; |
| 912 |
QUADTREE qt; |
| 913 |
BCOORD q0[3],q1[3],q2[3]; |
| 914 |
BCOORD t0[3],t1[3],t2[3]; |
| 915 |
BCOORD dt10[3],dt21[3],dt02[3]; |
| 916 |
BCOORD scale; |
| 917 |
unsigned int s0,s1,s2,sq0,sq1,sq2; |
| 918 |
FUNC f; |
| 919 |
int n; |
| 920 |
{ |
| 921 |
BCOORD a,b,c; |
| 922 |
BCOORD va[3],vb[3],vc[3]; |
| 923 |
unsigned int sa,sb,sc; |
| 924 |
|
| 925 |
if(n == 0) |
| 926 |
return; |
| 927 |
/* If a tree: trivial reject and recurse on potential children */ |
| 928 |
if(QT_IS_TREE(qt)) |
| 929 |
{ |
| 930 |
QT_SET_FLAG(qt); |
| 931 |
|
| 932 |
/* Test against new a edge: if entirely to left: only need |
| 933 |
to visit child 0 |
| 934 |
*/ |
| 935 |
a = q1[0] + scale; |
| 936 |
b = q0[1] + scale; |
| 937 |
c = q0[2] + scale; |
| 938 |
|
| 939 |
SIDES_GTR(t0,t1,t2,sa,sb,sc,a,b,c); |
| 940 |
|
| 941 |
if(sa==7) |
| 942 |
{ |
| 943 |
vb[1] = q0[1]; |
| 944 |
vc[2] = q0[2]; |
| 945 |
vc[1] = b; |
| 946 |
vb[2] = c; |
| 947 |
vb[0] = vc[0] = a; |
| 948 |
qtVisit_tri(root,QT_NTH_CHILD(qt,0),q0,vc, |
| 949 |
vb,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,s1,s2,sq0,sb,sc,f,n-1); |
| 950 |
return; |
| 951 |
} |
| 952 |
if(sb==7) |
| 953 |
{ |
| 954 |
va[0] = q1[0]; |
| 955 |
vc[2] = q0[2]; |
| 956 |
va[1] = vc[1] = b; |
| 957 |
va[2] = c; |
| 958 |
vc[0] = a; |
| 959 |
qtVisit_tri(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
| 960 |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n-1); |
| 961 |
return; |
| 962 |
} |
| 963 |
if(sc==7) |
| 964 |
{ |
| 965 |
va[0] = q1[0]; |
| 966 |
vb[1] = q0[1]; |
| 967 |
va[1] = b; |
| 968 |
va[2] = vb[2] = c; |
| 969 |
vb[0] = a; |
| 970 |
qtVisit_tri(root,QT_NTH_CHILD(qt,2),vb,va, |
| 971 |
q2,t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n-1); |
| 972 |
return; |
| 973 |
} |
| 974 |
|
| 975 |
va[0] = q1[0]; |
| 976 |
vb[1] = q0[1]; |
| 977 |
vc[2] = q0[2]; |
| 978 |
va[1] = vc[1] = b; |
| 979 |
va[2] = vb[2] = c; |
| 980 |
vb[0] = vc[0] = a; |
| 981 |
/* If outside of all edges: only need to Visit 3 */ |
| 982 |
if(sa==0 && sb==0 && sc==0) |
| 983 |
{ |
| 984 |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,3),va,vb, |
| 985 |
vc,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,sb,sc,s0,s1,s2,f,n-1); |
| 986 |
return; |
| 987 |
} |
| 988 |
|
| 989 |
if(sa) |
| 990 |
qtVisit_tri(root,QT_NTH_CHILD(qt,0),q0,vc,vb,t0, |
| 991 |
t1,t2,dt10,dt21,dt02,scale>>1,sa,s1,s2,sq0,sb,sc,f,n-1); |
| 992 |
if(sb) |
| 993 |
qtVisit_tri(root,QT_NTH_CHILD(qt,1),vc,q1,va,t0, |
| 994 |
t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n-1); |
| 995 |
if(sc) |
| 996 |
qtVisit_tri(root,QT_NTH_CHILD(qt,2),vb,va,q2,t0, |
| 997 |
t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n-1); |
| 998 |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,3),va,vb,vc,t0, |
| 999 |
t1,t2,dt10,dt21,dt02,scale>>1,sa,sb,sc,s0,s1,s2,f,n-1); |
| 1000 |
} |
| 1001 |
/* Leaf node: Do definitive test */ |
| 1002 |
else |
| 1003 |
qtLeaf_visit_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
| 1004 |
scale,s0,s1,s2,sq0,sq1,sq2,f,n); |
| 1005 |
|
| 1006 |
} |
| 1007 |
|
| 1008 |
|
| 1009 |
qtVisit_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02,scale, |
| 1010 |
s0,s1,s2,sq0,sq1,sq2,f,n) |
| 1011 |
int root; |
| 1012 |
QUADTREE qt; |
| 1013 |
BCOORD q0[3],q1[3],q2[3]; |
| 1014 |
BCOORD t0[3],t1[3],t2[3]; |
| 1015 |
BCOORD dt10[3],dt21[3],dt02[3]; |
| 1016 |
BCOORD scale; |
| 1017 |
unsigned int s0,s1,s2,sq0,sq1,sq2; |
| 1018 |
FUNC f; |
| 1019 |
int n; |
| 1020 |
{ |
| 1021 |
BCOORD a,b,c; |
| 1022 |
BCOORD va[3],vb[3],vc[3]; |
| 1023 |
unsigned int sa,sb,sc; |
| 1024 |
|
| 1025 |
if(n==0) |
| 1026 |
return; |
| 1027 |
/* If a tree: trivial reject and recurse on potential children */ |
| 1028 |
if(QT_IS_TREE(qt)) |
| 1029 |
{ |
| 1030 |
QT_SET_FLAG(qt); |
| 1031 |
/* Test against new a edge: if entirely to left: only need |
| 1032 |
to visit child 0 |
| 1033 |
*/ |
| 1034 |
a = q1[0] - scale; |
| 1035 |
b = q0[1] - scale; |
| 1036 |
c = q0[2] - scale; |
| 1037 |
|
| 1038 |
SIDES_GTR(t0,t1,t2,sa,sb,sc,a,b,c); |
| 1039 |
|
| 1040 |
if(sa==0) |
| 1041 |
{ |
| 1042 |
vb[1] = q0[1]; |
| 1043 |
vc[2] = q0[2]; |
| 1044 |
vc[1] = b; |
| 1045 |
vb[2] = c; |
| 1046 |
vb[0] = vc[0] = a; |
| 1047 |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,0),q0,vc, |
| 1048 |
vb,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,s1,s2,sq0,sb,sc,f,n-1); |
| 1049 |
return; |
| 1050 |
} |
| 1051 |
if(sb==0) |
| 1052 |
{ |
| 1053 |
va[0] = q1[0]; |
| 1054 |
vc[2] = q0[2]; |
| 1055 |
va[1] = vc[1] = b; |
| 1056 |
va[2] = c; |
| 1057 |
vc[0] = a; |
| 1058 |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
| 1059 |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n-1); |
| 1060 |
return; |
| 1061 |
} |
| 1062 |
if(sc==0) |
| 1063 |
{ |
| 1064 |
va[0] = q1[0]; |
| 1065 |
vb[1] = q0[1]; |
| 1066 |
va[1] = b; |
| 1067 |
va[2] = vb[2] = c; |
| 1068 |
vb[0] = a; |
| 1069 |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,2),vb,va, |
| 1070 |
q2,t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n-1); |
| 1071 |
return; |
| 1072 |
} |
| 1073 |
va[0] = q1[0]; |
| 1074 |
vb[1] = q0[1]; |
| 1075 |
vc[2] = q0[2]; |
| 1076 |
va[1] = vc[1] = b; |
| 1077 |
va[2] = vb[2] = c; |
| 1078 |
vb[0] = vc[0] = a; |
| 1079 |
/* If outside of all edges: only need to Visit 3 */ |
| 1080 |
if(sa==7 && sb==7 && sc==7) |
| 1081 |
{ |
| 1082 |
qtVisit_tri(root,QT_NTH_CHILD(qt,3),va,vb, |
| 1083 |
vc,t0,t1,t2,dt10,dt21,dt02, scale>>1,sa,sb,sc,s0,s1,s2,f,n-1); |
| 1084 |
return; |
| 1085 |
} |
| 1086 |
if(sa!=7) |
| 1087 |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,0),q0,vc,vb, |
| 1088 |
t0,t1,t2,dt10,dt21,dt02,scale>>1,sa,s1,s2,sq0,sb,sc,f,n-1); |
| 1089 |
if(sb!=7) |
| 1090 |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,1),vc,q1,va, |
| 1091 |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,sb,s2,sa,sq1,sc,f,n-1); |
| 1092 |
if(sc!=7) |
| 1093 |
qtVisit_tri_rev(root,QT_NTH_CHILD(qt,2),vb,va,q2, |
| 1094 |
t0,t1,t2,dt10,dt21,dt02,scale>>1,s0,s1,sc,sa,sb,sq2,f,n-1); |
| 1095 |
|
| 1096 |
qtVisit_tri(root,QT_NTH_CHILD(qt,3),va,vb,vc,t0,t1, |
| 1097 |
t2,dt10,dt21,dt02,scale>>1,sa,sb,sc,s0,s1,s2,f,n-1); |
| 1098 |
return; |
| 1099 |
} |
| 1100 |
/* Leaf node: Do definitive test */ |
| 1101 |
else |
| 1102 |
qtLeaf_visit_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
| 1103 |
scale,s0,s1,s2,sq0,sq1,sq2,f,n); |
| 1104 |
} |
| 1105 |
|
| 1106 |
|
| 1107 |
|
| 1108 |
qtLeaf_visit_tri(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
| 1109 |
scale, s0,s1,s2,sq0,sq1,sq2,f,n) |
| 1110 |
int root; |
| 1111 |
QUADTREE qt; |
| 1112 |
BCOORD q0[3],q1[3],q2[3]; |
| 1113 |
BCOORD t0[3],t1[3],t2[3]; |
| 1114 |
BCOORD dt10[3],dt21[3],dt02[3]; |
| 1115 |
unsigned int scale,s0,s1,s2,sq0,sq1,sq2; |
| 1116 |
FUNC f; |
| 1117 |
int n; |
| 1118 |
{ |
| 1119 |
double db; |
| 1120 |
unsigned int e0,e1,e2; |
| 1121 |
char al,ah,bl,bh,cl,ch,testl,testh; |
| 1122 |
char test_t0t1,test_t1t2,test_t2t0; |
| 1123 |
BCOORD a,b,c; |
| 1124 |
|
| 1125 |
/* First check if can trivial accept: if vertex in cell */ |
| 1126 |
if(s0 & s1 & s2) |
| 1127 |
goto Lfunc_call; |
| 1128 |
|
| 1129 |
/* Assumption: Could not trivial reject*/ |
| 1130 |
/* IF any coords lie on edge- must be in if couldnt reject */ |
| 1131 |
a = q1[0];b= q0[1]; c= q0[2]; |
| 1132 |
if(t0[0]== a || t0[1] == b || t0[2] == c) |
| 1133 |
goto Lfunc_call; |
| 1134 |
if(t1[0]== a || t1[1] == b || t1[2] == c) |
| 1135 |
goto Lfunc_call; |
| 1136 |
if(t2[0]== a || t2[1] == b || t2[2] == c) |
| 1137 |
goto Lfunc_call; |
| 1138 |
|
| 1139 |
/* Test for edge crossings */ |
| 1140 |
/* Test t0t1,t1t2,t2t0 against a */ |
| 1141 |
/* Calculate edge crossings */ |
| 1142 |
e0 = (s0 ^ ((s0 >> 1) | (s0 << 2 & 4))); |
| 1143 |
/* See if edge can be trivially rejected from intersetion testing */ |
| 1144 |
test_t0t1 = !(((s0 & 6)==0) || ((s1 & 6)==0)|| ((s2 & 6)==0) || |
| 1145 |
((sq0 & 6)==6) ||((sq1 & 6)==6)|| ((sq2 & 6)==6)); |
| 1146 |
bl=bh=0; |
| 1147 |
if(test_t0t1 && (e0 & 2) ) |
| 1148 |
{ |
| 1149 |
/* Must do double calculation to avoid overflow */ |
| 1150 |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
| 1151 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 1152 |
} |
| 1153 |
test_t1t2= !(((s0 & 3)==0) || ((s1 & 3)==0)|| ((s2 & 3)==0) || |
| 1154 |
((sq0 & 3)==3) ||((sq1 & 3)==3)|| ((sq2 & 3)==3)); |
| 1155 |
if(test_t1t2 && (e0 & 1)) |
| 1156 |
{ /* test t1t2 against a */ |
| 1157 |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
| 1158 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 1159 |
} |
| 1160 |
test_t2t0 = !(((s0 & 5)==0) || ((s1 & 5)==0)|| ((s2 & 5)==0) || |
| 1161 |
((sq0 & 5)==5) ||((sq1 & 5)==5)|| ((sq2 & 5)==5)); |
| 1162 |
if(test_t2t0 && (e0 & 4)) |
| 1163 |
{ |
| 1164 |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
| 1165 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 1166 |
} |
| 1167 |
e1 = (s1 ^ ((s1 >> 1) | (s1 << 2 & 4))); |
| 1168 |
cl = ch = 0; |
| 1169 |
if(test_t0t1 && (e1 & 2)) |
| 1170 |
{/* test t0t1 against b */ |
| 1171 |
db = t0[2] + dt10[2]*((double)(b-t0[1]))/dt10[1]; |
| 1172 |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
| 1173 |
} |
| 1174 |
if(test_t1t2 && (e1 & 1)) |
| 1175 |
{/* test t1t2 against b */ |
| 1176 |
db = t1[2] + dt21[2]*((double)(q0[1] - t1[1]))/dt21[1]; |
| 1177 |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
| 1178 |
} |
| 1179 |
if(test_t2t0 && (e1 & 4)) |
| 1180 |
{/* test t2t0 against b */ |
| 1181 |
db = t2[2] + dt02[2]*((double)(q0[1] - t2[1]))/dt02[1]; |
| 1182 |
TEST_INT(testl,testh,db,c,q2[2],cl,ch) |
| 1183 |
} |
| 1184 |
|
| 1185 |
/* test edges against c */ |
| 1186 |
e2 = (s2 ^ ((s2 >> 1) | (s2 << 2 & 4))); |
| 1187 |
al = ah = 0; |
| 1188 |
if(test_t0t1 && (e2 & 2)) |
| 1189 |
{ /* test t0t1 against c */ |
| 1190 |
db = t0[0] + dt10[0]*((double)(c-t0[2]))/dt10[2]; |
| 1191 |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
| 1192 |
} |
| 1193 |
if(test_t1t2 && (e2 & 1)) |
| 1194 |
{ |
| 1195 |
db = t1[0] + dt21[0]*((double)(c - t1[2]))/dt21[2]; |
| 1196 |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
| 1197 |
} |
| 1198 |
if(test_t2t0 && (e2 & 4)) |
| 1199 |
{ /* test t2t0 against c */ |
| 1200 |
db = t2[0] + dt02[0]*((double)(c - t2[2]))/dt02[2]; |
| 1201 |
TEST_INT(testl,testh,db,a,q0[0],al,ah) |
| 1202 |
} |
| 1203 |
/* Only remaining case is if some edge trivially rejected */ |
| 1204 |
if(!e0 || !e1 || !e2) |
| 1205 |
return; |
| 1206 |
|
| 1207 |
/* Only one/none got tested - pick either of other two/any two */ |
| 1208 |
/* Only need to test one edge */ |
| 1209 |
if(!test_t0t1 && (e0 & 2)) |
| 1210 |
{ |
| 1211 |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
| 1212 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 1213 |
} |
| 1214 |
if(!test_t1t2 && (e0 & 1)) |
| 1215 |
{/* test t1t2 against a */ |
| 1216 |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
| 1217 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 1218 |
} |
| 1219 |
if(!test_t2t0 && (e0 & 4)) |
| 1220 |
{ |
| 1221 |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
| 1222 |
TEST_INT(testl,testh,db,b,q1[1],bl,bh) |
| 1223 |
} |
| 1224 |
|
| 1225 |
return; |
| 1226 |
|
| 1227 |
Lfunc_call: |
| 1228 |
|
| 1229 |
f.func(f.argptr,root,qt,n); |
| 1230 |
if(!QT_IS_EMPTY(qt)) |
| 1231 |
QT_LEAF_SET_FLAG(qt); |
| 1232 |
|
| 1233 |
} |
| 1234 |
|
| 1235 |
|
| 1236 |
|
| 1237 |
/* Leaf node: Do definitive test */ |
| 1238 |
QUADTREE |
| 1239 |
qtLeaf_visit_tri_rev(root,qt,q0,q1,q2,t0,t1,t2,dt10,dt21,dt02, |
| 1240 |
scale, s0,s1,s2,sq0,sq1,sq2,f,n) |
| 1241 |
int root; |
| 1242 |
QUADTREE qt; |
| 1243 |
BCOORD q0[3],q1[3],q2[3]; |
| 1244 |
BCOORD t0[3],t1[3],t2[3]; |
| 1245 |
BCOORD dt10[3],dt21[3],dt02[3]; |
| 1246 |
unsigned int scale,s0,s1,s2,sq0,sq1,sq2; |
| 1247 |
FUNC f; |
| 1248 |
int n; |
| 1249 |
{ |
| 1250 |
double db; |
| 1251 |
unsigned int e0,e1,e2; |
| 1252 |
BCOORD a,b,c; |
| 1253 |
double p0[2], p1[2],cp; |
| 1254 |
char al,ah,bl,bh,cl,ch; |
| 1255 |
char testl,testh,test_t0t1,test_t1t2,test_t2t0; |
| 1256 |
unsigned int ls0,ls1,ls2; |
| 1257 |
|
| 1258 |
/* May have gotten passed trivial reject if one/two vertices are ON */ |
| 1259 |
a = q1[0];b= q0[1]; c= q0[2]; |
| 1260 |
SIDES_LESS(t0,t1,t2,ls0,ls1,ls2,a,b,c); |
| 1261 |
|
| 1262 |
/* First check if can trivial accept: if vertex in cell */ |
| 1263 |
if(ls0 & ls1 & ls2) |
| 1264 |
goto Lfunc_call; |
| 1265 |
|
| 1266 |
if(ls0==0 || ls1 == 0 || ls2 ==0) |
| 1267 |
return; |
| 1268 |
/* Assumption: Could not trivial reject*/ |
| 1269 |
/* IF any coords lie on edge- must be in if couldnt reject */ |
| 1270 |
|
| 1271 |
if(t0[0]== a || t0[1] == b || t0[2] == c) |
| 1272 |
goto Lfunc_call; |
| 1273 |
if(t1[0]== a || t1[1] == b || t1[2] == c) |
| 1274 |
goto Lfunc_call; |
| 1275 |
if(t2[0]== a || t2[1] == b || t2[2] == c) |
| 1276 |
goto Lfunc_call; |
| 1277 |
|
| 1278 |
/* Test for edge crossings */ |
| 1279 |
/* Test t0t1 against a,b,c */ |
| 1280 |
/* First test if t0t1 can be trivially rejected */ |
| 1281 |
/* If both edges are outside bounds- dont need to test */ |
| 1282 |
|
| 1283 |
/* Test t0t1,t1t2,t2t0 against a */ |
| 1284 |
test_t0t1 = !(((ls0 & 6)==0) || ((ls1 & 6)==0)|| ((ls2 & 6)==0) || |
| 1285 |
((sq0 & 6)==0) ||((sq1 & 6)==0)|| ((sq2 & 6)==0)); |
| 1286 |
e0 = (ls0 ^ ((ls0 >> 1) | (ls0 << 2 & 4))); |
| 1287 |
bl=bh=0; |
| 1288 |
/* Test t0t1,t1t2,t2t0 against a */ |
| 1289 |
if(test_t0t1 && (e0 & 2) ) |
| 1290 |
{ |
| 1291 |
db = t0[1] + dt10[1]*((double)(a-t0[0])/dt10[0]); |
| 1292 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 1293 |
} |
| 1294 |
test_t1t2= !(((ls0 & 3)==0) || ((ls1 & 3)==0)|| ((ls2 & 3)==0) || |
| 1295 |
((sq0 & 3)==0) ||((sq1 & 3)==0)|| ((sq2 & 3)==0)); |
| 1296 |
if(test_t1t2 && (e0 & 1)) |
| 1297 |
{ /* test t1t2 against a */ |
| 1298 |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
| 1299 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 1300 |
} |
| 1301 |
test_t2t0 = !(((ls0 & 5)==0) || ((ls1 & 5)==0)|| ((ls2 & 5)==0) || |
| 1302 |
((sq0 & 5)==0) ||((sq1 & 5)==0)|| ((sq2 & 5)==0)); |
| 1303 |
if(test_t2t0 && (e0 & 4)) |
| 1304 |
{ |
| 1305 |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
| 1306 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 1307 |
} |
| 1308 |
cl = ch = 0; |
| 1309 |
e1 = (ls1 ^ ((ls1 >> 1) | (ls1 << 2 & 4))); |
| 1310 |
if(test_t0t1 && (e1 & 2)) |
| 1311 |
{/* test t0t1 against b */ |
| 1312 |
db = t0[2] + dt10[2]*(((double)(b-t0[1]))/dt10[1]); |
| 1313 |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
| 1314 |
} |
| 1315 |
if(test_t1t2 && (e1 & 1)) |
| 1316 |
{/* test t1t2 against b */ |
| 1317 |
db = t1[2] + dt21[2]*((double)(b - t1[1]))/dt21[1]; |
| 1318 |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
| 1319 |
} |
| 1320 |
if(test_t2t0 && (e1 & 4)) |
| 1321 |
{/* test t2t0 against b */ |
| 1322 |
db = t2[2] + dt02[2]*((double)(b - t2[1]))/dt02[1]; |
| 1323 |
TEST_INT(testl,testh,db,q1[2],c,cl,ch) |
| 1324 |
} |
| 1325 |
al = ah = 0; |
| 1326 |
e2 = (ls2 ^ ((ls2 >> 1) | (ls2 << 2 & 4))); |
| 1327 |
if(test_t0t1 && (e2 & 2)) |
| 1328 |
{ /* test t0t1 against c */ |
| 1329 |
db = t0[0] + dt10[0]*(((double)(c-t0[2]))/dt10[2]); |
| 1330 |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
| 1331 |
} |
| 1332 |
if(test_t1t2 && (e2 & 1)) |
| 1333 |
{ |
| 1334 |
db = t1[0] + dt21[0]*((double)(c - t1[2]))/dt21[2]; |
| 1335 |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
| 1336 |
} |
| 1337 |
if(test_t2t0 && (e2 & 4)) |
| 1338 |
{ /* test t2t0 against c */ |
| 1339 |
db = t2[0] + dt02[0]*((double)(c - t2[2]))/dt02[2]; |
| 1340 |
TEST_INT(testl,testh,db,q0[0],a,al,ah) |
| 1341 |
} |
| 1342 |
/* Only remaining case is if some edge trivially rejected */ |
| 1343 |
if(!e0 || !e1 || !e2) |
| 1344 |
return; |
| 1345 |
|
| 1346 |
/* Only one/none got tested - pick either of other two/any two */ |
| 1347 |
/* Only need to test one edge */ |
| 1348 |
if(!test_t0t1 && (e0 & 2)) |
| 1349 |
{ |
| 1350 |
db = t0[1] + dt10[1]*((double)(a-t0[0]))/dt10[0]; |
| 1351 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 1352 |
} |
| 1353 |
if(!test_t1t2 && (e0 & 1)) |
| 1354 |
{/* test t1t2 against a */ |
| 1355 |
db = t1[1] + dt21[1]*((double)(a - t1[0]))/dt21[0]; |
| 1356 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 1357 |
} |
| 1358 |
if(!test_t2t0 && (e0 & 4)) |
| 1359 |
{ |
| 1360 |
db = t2[1] + dt02[1]*((double)(a - t2[0]))/dt02[0]; |
| 1361 |
TEST_INT(testl,testh,db,q1[1],b,bl,bh) |
| 1362 |
} |
| 1363 |
|
| 1364 |
return; |
| 1365 |
|
| 1366 |
Lfunc_call: |
| 1367 |
f.func(f.argptr,root,qt,n); |
| 1368 |
if(!QT_IS_EMPTY(qt)) |
| 1369 |
QT_LEAF_SET_FLAG(qt); |
| 1370 |
} |
| 1371 |
|
| 1372 |
|
| 1373 |
QUADTREE |
| 1374 |
qtInsert_point(root,qt,parent,q0,q1,q2,bc,scale,f,n,doneptr) |
| 1375 |
int root; |
| 1376 |
QUADTREE qt,parent; |
| 1377 |
BCOORD q0[3],q1[3],q2[3],bc[3],scale; |
| 1378 |
FUNC f; |
| 1379 |
int n,*doneptr; |
| 1380 |
{ |
| 1381 |
BCOORD a,b,c; |
| 1382 |
BCOORD va[3],vb[3],vc[3]; |
| 1383 |
|
| 1384 |
if(QT_IS_TREE(qt)) |
| 1385 |
{ |
| 1386 |
a = q1[0] + scale; |
| 1387 |
b = q0[1] + scale; |
| 1388 |
c = q0[2] + scale; |
| 1389 |
if(bc[0] > a) |
| 1390 |
{ |
| 1391 |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
| 1392 |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
| 1393 |
QT_NTH_CHILD(qt,0) = qtInsert_point(root,QT_NTH_CHILD(qt,0), |
| 1394 |
qt,q0,vc,vb,bc,scale>>1,f,n+1,doneptr); |
| 1395 |
if(!*doneptr) |
| 1396 |
{ |
| 1397 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
| 1398 |
if(!*doneptr) |
| 1399 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
| 1400 |
if(!*doneptr) |
| 1401 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
| 1402 |
} |
| 1403 |
return(qt); |
| 1404 |
} |
| 1405 |
if(bc[1] > b) |
| 1406 |
{ |
| 1407 |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
| 1408 |
va[0] = q1[0]; va[1] = b; va[2] = c; |
| 1409 |
QT_NTH_CHILD(qt,1) =qtInsert_point(root,QT_NTH_CHILD(qt,1), |
| 1410 |
qt,vc,q1,va,bc,scale >>1,f,n+1,doneptr); |
| 1411 |
if(!*doneptr) |
| 1412 |
{ |
| 1413 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
| 1414 |
if(!*doneptr) |
| 1415 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
| 1416 |
if(!*doneptr) |
| 1417 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
| 1418 |
} |
| 1419 |
return(qt); |
| 1420 |
} |
| 1421 |
if(bc[2] > c) |
| 1422 |
{ |
| 1423 |
va[0] = q1[0]; va[1] = b; va[2] = c; |
| 1424 |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
| 1425 |
QT_NTH_CHILD(qt,2) = qtInsert_point(root,QT_NTH_CHILD(qt,2), |
| 1426 |
qt,vb,va,q2,bc,scale>>1,f,n+1,doneptr); |
| 1427 |
if(!*doneptr) |
| 1428 |
{ |
| 1429 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
| 1430 |
if(!*doneptr) |
| 1431 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
| 1432 |
if(!*doneptr) |
| 1433 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
| 1434 |
} |
| 1435 |
return(qt); |
| 1436 |
} |
| 1437 |
else |
| 1438 |
{ |
| 1439 |
va[0] = q1[0]; va[1] = b; va[2] = c; |
| 1440 |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
| 1441 |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
| 1442 |
QT_NTH_CHILD(qt,3) = qtInsert_point_rev(root,QT_NTH_CHILD(qt,3), |
| 1443 |
qt,va,vb,vc,bc,scale>>1,f,n+1,doneptr); |
| 1444 |
if(!*doneptr) |
| 1445 |
{ |
| 1446 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
| 1447 |
if(!*doneptr) |
| 1448 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
| 1449 |
if(!*doneptr) |
| 1450 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
| 1451 |
} |
| 1452 |
return(qt); |
| 1453 |
} |
| 1454 |
} |
| 1455 |
else |
| 1456 |
{ |
| 1457 |
qt = f.func(f.argptr,root,qt,parent,q0,q1,q2,bc,scale,0,f,n,doneptr); |
| 1458 |
return(qt); |
| 1459 |
} |
| 1460 |
} |
| 1461 |
|
| 1462 |
|
| 1463 |
QUADTREE |
| 1464 |
qtInsert_point_rev(root,qt,parent,q0,q1,q2,bc,scale,f,n,doneptr) |
| 1465 |
int root; |
| 1466 |
QUADTREE qt,parent; |
| 1467 |
BCOORD q0[3],q1[3],q2[3],bc[3]; |
| 1468 |
BCOORD scale; |
| 1469 |
FUNC f; |
| 1470 |
int n,*doneptr; |
| 1471 |
{ |
| 1472 |
BCOORD a,b,c; |
| 1473 |
BCOORD va[3],vb[3],vc[3]; |
| 1474 |
|
| 1475 |
if(QT_IS_TREE(qt)) |
| 1476 |
{ |
| 1477 |
a = q1[0] - scale; |
| 1478 |
b = q0[1] - scale; |
| 1479 |
c = q0[2] - scale; |
| 1480 |
if(bc[0] < a) |
| 1481 |
{ |
| 1482 |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
| 1483 |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
| 1484 |
QT_NTH_CHILD(qt,0) = qtInsert_point_rev(root,QT_NTH_CHILD(qt,0), |
| 1485 |
qt,q0,vc,vb,bc,scale>>1,f,n+1,doneptr); |
| 1486 |
if(!*doneptr) |
| 1487 |
{ |
| 1488 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
| 1489 |
if(!*doneptr) |
| 1490 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
| 1491 |
if(!*doneptr) |
| 1492 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
| 1493 |
} |
| 1494 |
return(qt); |
| 1495 |
} |
| 1496 |
if(bc[1] < b) |
| 1497 |
{ |
| 1498 |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
| 1499 |
va[0] = q1[0]; va[1] = b; va[2] = c; |
| 1500 |
QT_NTH_CHILD(qt,1) = qtInsert_point_rev(root,QT_NTH_CHILD(qt,1), |
| 1501 |
qt,vc,q1,va,bc,scale>>1,f,n+1,doneptr); |
| 1502 |
if(!*doneptr) |
| 1503 |
{ |
| 1504 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
| 1505 |
if(!*doneptr) |
| 1506 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
| 1507 |
if(!*doneptr) |
| 1508 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
| 1509 |
} |
| 1510 |
return(qt); |
| 1511 |
} |
| 1512 |
if(bc[2] < c) |
| 1513 |
{ |
| 1514 |
va[0] = q1[0]; va[1] = b; va[2] = c; |
| 1515 |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
| 1516 |
QT_NTH_CHILD(qt,2) = qtInsert_point_rev(root,QT_NTH_CHILD(qt,2), |
| 1517 |
qt,vb,va,q2,bc,scale>>1,f,n+1,doneptr); |
| 1518 |
if(!*doneptr) |
| 1519 |
{ |
| 1520 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
| 1521 |
if(!*doneptr) |
| 1522 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
| 1523 |
if(!*doneptr) |
| 1524 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,3),f,doneptr); |
| 1525 |
} |
| 1526 |
return(qt); |
| 1527 |
} |
| 1528 |
else |
| 1529 |
{ |
| 1530 |
va[0] = q1[0]; va[1] = b; va[2] = c; |
| 1531 |
vb[0] = a; vb[1] = q0[1]; vb[2] = c; |
| 1532 |
vc[0] = a; vc[1] = b; vc[2] = q0[2]; |
| 1533 |
QT_NTH_CHILD(qt,3) = qtInsert_point(root,QT_NTH_CHILD(qt,3), |
| 1534 |
qt,va,vb,vc,bc,scale>>1,f,n+1,doneptr); |
| 1535 |
if(!*doneptr) |
| 1536 |
{ |
| 1537 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,0),f,doneptr); |
| 1538 |
if(!*doneptr) |
| 1539 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,1),f,doneptr); |
| 1540 |
if(!*doneptr) |
| 1541 |
f.func_after(f.argptr,QT_NTH_CHILD(qt,2),f,doneptr); |
| 1542 |
} |
| 1543 |
return(qt); |
| 1544 |
} |
| 1545 |
} |
| 1546 |
else |
| 1547 |
{ |
| 1548 |
qt = f.func(f.argptr,root,qt,parent,q0,q1,q2,bc,scale,1,f,n,doneptr); |
| 1549 |
return(qt); |
| 1550 |
} |
| 1551 |
} |
| 1552 |
|
| 1553 |
|
| 1554 |
|
| 1555 |
|
| 1556 |
|
| 1557 |
|
| 1558 |
|
| 1559 |
|
| 1560 |
|
| 1561 |
|
| 1562 |
|
