8 |
|
* sm.c |
9 |
|
*/ |
10 |
|
#include "standard.h" |
11 |
– |
|
12 |
– |
#include "object.h" |
13 |
– |
|
11 |
|
#include "sm_list.h" |
12 |
|
#include "sm_geom.h" |
13 |
|
#include "sm.h" |
17 |
|
double smDist_sum=0; |
18 |
|
int smNew_tri_cnt=0; |
19 |
|
|
20 |
+ |
static int smBase_nbrs[4][3] = { {3,2,1},{3,0,2},{3,1,0},{1,2,0}}; |
21 |
+ |
|
22 |
|
#ifdef TEST_DRIVER |
24 |
– |
VIEW View = {0,{0,0,0},{0,0,-1},{0,1,0},60,60,0}; |
23 |
|
VIEW Current_View = {0,{0,0,0},{0,0,-1},{0,1,0},60,60,0}; |
24 |
|
int Pick_cnt =0; |
25 |
< |
int Pick_tri = -1,Picking = FALSE; |
25 |
> |
int Pick_tri = -1,Picking = FALSE,Pick_samp=-1; |
26 |
|
FVECT Pick_point[500],Pick_origin,Pick_dir; |
27 |
|
FVECT Pick_v0[500], Pick_v1[500], Pick_v2[500]; |
28 |
|
FVECT P0,P1,P2; |
224 |
|
{ |
225 |
|
int max_vertices; |
226 |
|
|
229 |
– |
sleep(10); |
230 |
– |
|
227 |
|
/* If n <=0, Just clear the existing structures */ |
228 |
|
if(n <= 0) |
229 |
|
{ |
256 |
|
SM *sm; |
257 |
|
FVECT v0,v1,v2; |
258 |
|
int (*func)(); |
259 |
< |
char *arg; |
259 |
> |
int *arg; |
260 |
|
{ |
261 |
|
STREE *st; |
262 |
< |
char found; |
262 |
> |
int found; |
263 |
|
FVECT p0,p1,p2; |
264 |
|
|
265 |
|
st = SM_LOCATOR(sm); |
266 |
|
|
267 |
< |
point_on_sphere(p0,v0,SM_VIEW_CENTER(sm)); |
268 |
< |
point_on_sphere(p1,v1,SM_VIEW_CENTER(sm)); |
269 |
< |
point_on_sphere(p2,v2,SM_VIEW_CENTER(sm)); |
267 |
> |
VSUB(p0,v0,SM_VIEW_CENTER(sm)); |
268 |
> |
VSUB(p1,v1,SM_VIEW_CENTER(sm)); |
269 |
> |
VSUB(p2,v2,SM_VIEW_CENTER(sm)); |
270 |
|
|
271 |
|
found = stApply_to_tri_cells(st,p0,p1,p2,func,arg); |
272 |
|
|
275 |
|
|
276 |
|
|
277 |
|
int |
278 |
+ |
add_tri_expand(qtptr,q0,q1,q2,t0,t1,t2,n,arg,t_id) |
279 |
+ |
QUADTREE *qtptr; |
280 |
+ |
FVECT q0,q1,q2; |
281 |
+ |
FVECT t0,t1,t2; |
282 |
+ |
int n; |
283 |
+ |
int *arg; |
284 |
+ |
int t_id; |
285 |
+ |
{ |
286 |
+ |
OBJECT tset[QT_MAXSET+1],*optr; |
287 |
+ |
int i,id,found; |
288 |
+ |
FVECT v0,v1,v2; |
289 |
+ |
|
290 |
+ |
#ifdef DEBUG_TEST_DRIVER |
291 |
+ |
Pick_tri = t_id; |
292 |
+ |
Picking = TRUE; |
293 |
+ |
#endif |
294 |
+ |
|
295 |
+ |
if(QT_IS_EMPTY(*qtptr)) |
296 |
+ |
{ |
297 |
+ |
*qtptr = qtaddelem(*qtptr,t_id); |
298 |
+ |
return(TRUE); |
299 |
+ |
} |
300 |
+ |
|
301 |
+ |
optr = qtqueryset(*qtptr); |
302 |
+ |
if(!inset(optr,t_id)) |
303 |
+ |
{ |
304 |
+ |
if(QT_SET_CNT(optr) < QT_MAXSET) |
305 |
+ |
*qtptr = qtaddelem(*qtptr,t_id); |
306 |
+ |
else |
307 |
+ |
{ |
308 |
+ |
#ifdef DEBUG |
309 |
+ |
eputs("add_tri_expand():no room in set\n"); |
310 |
+ |
#endif |
311 |
+ |
return(FALSE); |
312 |
+ |
} |
313 |
+ |
} |
314 |
+ |
optr = qtqueryset(*qtptr); |
315 |
+ |
if(QT_SET_CNT(optr) >= QT_SET_THRESHOLD) |
316 |
+ |
if (n < QT_MAX_LEVELS) |
317 |
+ |
{ |
318 |
+ |
qtgetset(tset,*qtptr); |
319 |
+ |
/* If set size exceeds threshold: subdivide cell and reinsert tris*/ |
320 |
+ |
qtfreeleaf(*qtptr); |
321 |
+ |
qtSubdivide(qtptr); |
322 |
+ |
|
323 |
+ |
for(optr = QT_SET_PTR(tset),i=QT_SET_CNT(tset); i > 0; i--) |
324 |
+ |
{ |
325 |
+ |
id = QT_SET_NEXT_ELEM(optr); |
326 |
+ |
qtTri_from_id(id,NULL,NULL,NULL,v0,v1,v2,NULL,NULL,NULL); |
327 |
+ |
found=qtAdd_tri(qtptr,q0,q1,q2,v0,v1,v2,id,n); |
328 |
+ |
#ifdef DEBUG |
329 |
+ |
if(!found) |
330 |
+ |
eputs("add_tri_expand():Reinsert\n"); |
331 |
+ |
#endif |
332 |
+ |
} |
333 |
+ |
return(QT_MODIFIED); |
334 |
+ |
} |
335 |
+ |
else |
336 |
+ |
if(QT_SET_CNT(optr) < QT_MAXSET) |
337 |
+ |
{ |
338 |
+ |
#ifdef DEBUG_TEST_DRIVER |
339 |
+ |
eputs("add_tri_expand():too many levels:can't expand\n"); |
340 |
+ |
#endif |
341 |
+ |
return(TRUE); |
342 |
+ |
} |
343 |
+ |
else |
344 |
+ |
{ |
345 |
+ |
#ifdef DEBUG |
346 |
+ |
eputs("add_tri_expand():too many tris inset:can't add\n"); |
347 |
+ |
#endif |
348 |
+ |
return(FALSE); |
349 |
+ |
} |
350 |
+ |
} |
351 |
+ |
|
352 |
+ |
|
353 |
+ |
int |
354 |
+ |
add_tri(qtptr,fptr,t_id) |
355 |
+ |
QUADTREE *qtptr; |
356 |
+ |
int *fptr; |
357 |
+ |
int t_id; |
358 |
+ |
{ |
359 |
+ |
|
360 |
+ |
OBJECT *optr; |
361 |
+ |
|
362 |
+ |
#ifdef DEBUG_TEST_DRIVER |
363 |
+ |
Pick_tri = t_id; |
364 |
+ |
Picking = TRUE; |
365 |
+ |
#endif |
366 |
+ |
if(QT_IS_EMPTY(*qtptr)) |
367 |
+ |
{ |
368 |
+ |
*qtptr = qtaddelem(*qtptr,t_id); |
369 |
+ |
if(!QT_FLAG_FILL_TRI(*fptr)) |
370 |
+ |
(*fptr)++; |
371 |
+ |
} |
372 |
+ |
else |
373 |
+ |
{ |
374 |
+ |
optr = qtqueryset(*qtptr); |
375 |
+ |
if(!inset(optr,t_id)) |
376 |
+ |
{ |
377 |
+ |
if(QT_SET_CNT(optr) < QT_MAXSET) |
378 |
+ |
{ |
379 |
+ |
if(QT_SET_CNT(optr) >= QT_SET_THRESHOLD) |
380 |
+ |
(*fptr) |= QT_EXPAND; |
381 |
+ |
if(!QT_FLAG_FILL_TRI(*fptr)) |
382 |
+ |
(*fptr)++; |
383 |
+ |
*qtptr = qtaddelem(*qtptr,t_id); |
384 |
+ |
} |
385 |
+ |
else |
386 |
+ |
{ |
387 |
+ |
#ifdef DEBUG_TESTDRIVER |
388 |
+ |
eputs("add_tri():exceeded set size\n"); |
389 |
+ |
#endif |
390 |
+ |
return(FALSE); |
391 |
+ |
} |
392 |
+ |
} |
393 |
+ |
} |
394 |
+ |
return(TRUE); |
395 |
+ |
} |
396 |
+ |
|
397 |
+ |
|
398 |
+ |
int |
399 |
+ |
stInsert_tri(st,t_id,t0,t1,t2) |
400 |
+ |
STREE *st; |
401 |
+ |
int t_id; |
402 |
+ |
FVECT t0,t1,t2; |
403 |
+ |
{ |
404 |
+ |
int f; |
405 |
+ |
FVECT dir; |
406 |
+ |
|
407 |
+ |
/* First add all of the leaf cells lying on the triangle perimeter: |
408 |
+ |
mark all cells seen on the way |
409 |
+ |
*/ |
410 |
+ |
ST_CLEAR_FLAGS(st); |
411 |
+ |
f = 0; |
412 |
+ |
VSUB(dir,t1,t0); |
413 |
+ |
stTrace_edge(st,t0,dir,1.0,add_tri,&f,t_id); |
414 |
+ |
VSUB(dir,t2,t1); |
415 |
+ |
stTrace_edge(st,t1,dir,1.0,add_tri,&f,t_id); |
416 |
+ |
VSUB(dir,t0,t2); |
417 |
+ |
stTrace_edge(st,t2,dir,1.0,add_tri,&f,t_id); |
418 |
+ |
/* Now visit interior */ |
419 |
+ |
if(QT_FLAG_FILL_TRI(f) || QT_FLAG_UPDATE(f)) |
420 |
+ |
stVisit_tri_interior(st,t0,t1,t2,add_tri_expand,&f,t_id); |
421 |
+ |
} |
422 |
+ |
|
423 |
|
smLocator_add_tri(sm,t_id,v0_id,v1_id,v2_id) |
424 |
|
SM *sm; |
425 |
|
int t_id; |
426 |
|
int v0_id,v1_id,v2_id; |
427 |
|
{ |
428 |
|
STREE *st; |
429 |
< |
FVECT p0,p1,p2; |
429 |
> |
FVECT v0,v1,v2; |
430 |
|
|
431 |
|
st = SM_LOCATOR(sm); |
432 |
|
|
433 |
< |
smDir(sm,p0,v0_id); |
434 |
< |
smDir(sm,p1,v1_id); |
435 |
< |
smDir(sm,p2,v2_id); |
433 |
> |
VSUB(v0,SM_NTH_WV(sm,v0_id),SM_VIEW_CENTER(sm)); |
434 |
> |
VSUB(v1,SM_NTH_WV(sm,v1_id),SM_VIEW_CENTER(sm)); |
435 |
> |
VSUB(v2,SM_NTH_WV(sm,v2_id),SM_VIEW_CENTER(sm)); |
436 |
|
|
437 |
< |
stAdd_tri(st,t_id,p0,p1,p2); |
437 |
> |
stUpdate_tri(st,t_id,v0,v1,v2,add_tri,add_tri_expand); |
438 |
|
|
298 |
– |
return(1); |
439 |
|
} |
440 |
|
|
441 |
|
/* Add a triangle to the base array with vertices v1-v2-v3 */ |
483 |
|
SM_NTH_VERT(sm,v1_id) = t_id; |
484 |
|
SM_NTH_VERT(sm,v2_id) = t_id; |
485 |
|
|
346 |
– |
/* Add triangle to the locator */ |
347 |
– |
smLocator_add_tri(sm,t_id,v0_id,v1_id,v2_id); |
486 |
|
if(t) |
487 |
|
*tptr = t; |
488 |
|
/* return initialized triangle */ |
523 |
|
} |
524 |
|
} |
525 |
|
else |
526 |
< |
if(d1 < d2) |
526 |
> |
if(d1 < d0) |
527 |
|
{ |
528 |
|
if((eps < 0) || d1 < eps) |
529 |
|
{ |
531 |
|
d = d1; |
532 |
|
} |
533 |
|
} |
534 |
< |
else |
397 |
< |
if((eps < 0) || d2 < eps) |
398 |
< |
{ |
399 |
< |
closest = v2_id; |
400 |
< |
d = d2; |
401 |
< |
} |
402 |
< |
} |
534 |
> |
} |
535 |
|
if(v2_id != -1) |
536 |
|
{ |
537 |
|
smDir(sm,v,v2_id); |
538 |
|
d2 = DIST(p,v); |
539 |
|
if((eps < 0) || d2 < eps) |
540 |
< |
if(closest== -1 ||(d2 < d)) |
540 |
> |
if(closest == -1 ||(d2 < d)) |
541 |
|
return(v2_id); |
542 |
|
} |
543 |
|
return(closest); |
560 |
|
|
561 |
|
VCOPY(v,SM_NTH_WV(sm,v1_id)); |
562 |
|
d1 = DIST(p,v); |
563 |
< |
if(d1 < d2) |
563 |
> |
if(d1 < d0) |
564 |
|
{ |
565 |
|
closest = v1_id; |
566 |
|
d = d1; |
574 |
|
} |
575 |
|
|
576 |
|
void |
577 |
< |
smTris_swap_edge(sm,t_id,t1_id,e,e1,tn_id,tn1_id) |
577 |
> |
smTris_swap_edge(sm,t_id,t1_id,e,e1,tn_id,tn1_id,add,del) |
578 |
|
SM *sm; |
579 |
|
int t_id,t1_id; |
580 |
|
int e,e1; |
581 |
< |
int **tn_id,**tn1_id; |
581 |
> |
int *tn_id,*tn1_id; |
582 |
> |
LIST **add,**del; |
583 |
|
|
584 |
|
{ |
585 |
|
TRI *t,*t1; |
602 |
|
verts[enext] = T_NTH_V(t1,e1prev); |
603 |
|
verts[eprev] = T_NTH_V(t,eprev); |
604 |
|
ta_id = smAdd_tri(sm,verts[0],verts[1],verts[2],&ta); |
605 |
< |
|
605 |
> |
*add = push_data(*add,ta_id); |
606 |
|
verts[e1] = T_NTH_V(t1,e1); |
607 |
|
verts[e1next] = T_NTH_V(t,eprev); |
608 |
|
verts[e1prev] = T_NTH_V(t1,e1prev); |
609 |
|
tb_id = smAdd_tri(sm,verts[0],verts[1],verts[2],&tb); |
610 |
< |
|
610 |
> |
*add = push_data(*add,tb_id); |
611 |
> |
|
612 |
|
/* set the neighbors */ |
613 |
|
T_NTH_NBR(ta,e) = T_NTH_NBR(t1,e1next); |
614 |
|
T_NTH_NBR(tb,e1) = T_NTH_NBR(t,enext); |
629 |
|
T_NTH_NBR(n,T_NTH_NBR_PTR(t1_id,n)) = tb_id; |
630 |
|
|
631 |
|
/* Delete two parent triangles */ |
632 |
< |
smDelete_tri(sm,t_id); |
633 |
< |
smDelete_tri(sm,t1_id); |
632 |
> |
|
633 |
> |
*del = push_data(*del,t_id); |
634 |
> |
if(SM_IS_NTH_T_NEW(sm,t_id)) |
635 |
> |
SM_CLEAR_NTH_T_NEW(sm,t_id); |
636 |
> |
else |
637 |
> |
SM_CLEAR_NTH_T_BASE(sm,t_id); |
638 |
> |
*del = push_data(*del,t1_id); |
639 |
> |
if(SM_IS_NTH_T_NEW(sm,t1_id)) |
640 |
> |
SM_CLEAR_NTH_T_NEW(sm,t1_id); |
641 |
> |
else |
642 |
> |
SM_CLEAR_NTH_T_BASE(sm,t1_id); |
643 |
|
*tn_id = ta_id; |
644 |
|
*tn1_id = tb_id; |
645 |
|
} |
646 |
|
|
647 |
+ |
smUpdate_locator(sm,add_list,del_list) |
648 |
+ |
SM *sm; |
649 |
+ |
LIST *add_list,*del_list; |
650 |
+ |
{ |
651 |
+ |
int t_id; |
652 |
+ |
TRI *t; |
653 |
+ |
while(add_list) |
654 |
+ |
{ |
655 |
+ |
t_id = pop_list(&add_list); |
656 |
+ |
if(!SM_IS_NTH_T_NEW(sm,t_id) && !SM_IS_NTH_T_BASE(sm,t_id)) |
657 |
+ |
{ |
658 |
+ |
SM_SET_NTH_T_NEW(sm,t_id); |
659 |
+ |
smNew_tri_cnt--; |
660 |
+ |
continue; |
661 |
+ |
} |
662 |
+ |
t = SM_NTH_TRI(sm,t_id); |
663 |
+ |
smLocator_add_tri(sm,t_id,T_NTH_V(t,0),T_NTH_V(t,1),T_NTH_V(t,2)); |
664 |
+ |
} |
665 |
+ |
|
666 |
+ |
while(del_list) |
667 |
+ |
{ |
668 |
+ |
t_id = pop_list(&del_list); |
669 |
+ |
if(SM_IS_NTH_T_NEW(sm,t_id)) |
670 |
+ |
{ |
671 |
+ |
smDelete_tri(sm,t_id); |
672 |
+ |
continue; |
673 |
+ |
} |
674 |
+ |
smLocator_remove_tri(sm,t_id); |
675 |
+ |
smDelete_tri(sm,t_id); |
676 |
+ |
} |
677 |
+ |
} |
678 |
|
/* MUST add check for constrained edges */ |
679 |
< |
char |
679 |
> |
int |
680 |
|
smFix_tris(sm,id,tlist) |
681 |
|
SM *sm; |
682 |
|
int id; |
683 |
|
LIST *tlist; |
684 |
|
{ |
685 |
|
TRI *t,*t_opp; |
686 |
< |
FVECT p,p1,np,p2,p3; |
687 |
< |
int swapped = 0; |
514 |
< |
int e,e1,e_id; |
515 |
< |
char debug = 0; |
686 |
> |
FVECT p,p1,p2,p3; |
687 |
> |
int e,e1,swapped = 0; |
688 |
|
int t_id,t_opp_id; |
689 |
< |
|
690 |
< |
VCOPY(p,SM_NTH_WV(sm,id)); |
691 |
< |
VSUB(p,p,SM_VIEW_CENTER(sm)); |
689 |
> |
LIST *add_list,*del_list; |
690 |
> |
|
691 |
> |
|
692 |
> |
add_list = del_list = NULL; |
693 |
> |
VSUB(p,SM_NTH_WV(sm,id),SM_VIEW_CENTER(sm)); |
694 |
|
while(tlist) |
695 |
|
{ |
696 |
< |
t_id = (int)pop_list(&tlist); |
696 |
> |
t_id = pop_list(&tlist); |
697 |
|
t = SM_NTH_TRI(sm,t_id); |
698 |
|
e = (T_WHICH_V(t,id)+1)%3; |
699 |
|
t_opp_id = T_NTH_NBR(t,e); |
708 |
|
e1 = T_NTH_NBR_PTR(t_id,t_opp); |
709 |
|
/* check list for t_opp and Remove if there */ |
710 |
|
remove_from_list(t_opp_id,&tlist); |
711 |
< |
|
712 |
< |
smTris_swap_edge(sm,t_id,t_opp_id,e,e1,&t_id,&t_opp_id); |
711 |
> |
smTris_swap_edge(sm,t_id,t_opp_id,e,e1,&t_id,&t_opp_id, |
712 |
> |
&add_list,&del_list); |
713 |
|
tlist = push_data(tlist,t_id); |
714 |
|
tlist = push_data(tlist,t_opp_id); |
715 |
|
} |
716 |
|
} |
717 |
+ |
smUpdate_locator(sm,add_list,del_list); |
718 |
|
return(swapped); |
719 |
|
} |
720 |
|
|
747 |
|
|
748 |
|
T_NTH_V(tri,T_WHICH_V(tri,id)) = nid; |
749 |
|
|
750 |
< |
t_id = smTri_next_ccw_nbr(sm,t,nid); |
751 |
< |
while((t= SM_NTH_TRI(sm,t_id)) != tri) |
750 |
> |
t_id = smTri_next_ccw_nbr(sm,tri,nid); |
751 |
> |
while((t = SM_NTH_TRI(sm,t_id)) != tri) |
752 |
|
{ |
753 |
|
T_NTH_V(t,T_WHICH_V(t,id)) = nid; |
754 |
|
t_id = smTri_next_ccw_nbr(sm,t,nid); |
774 |
|
COLR c; |
775 |
|
FVECT dir,p; |
776 |
|
int tri_id,snew_id; |
777 |
< |
char type,which; |
777 |
> |
int type,which; |
778 |
|
{ |
779 |
|
int n_id,s_id; |
780 |
|
TRI *tri; |
845 |
|
n_id = smClosest_vertex_in_tri(sm,t0_id,t1_id,t2_id,npt,P_REPLACE_EPS); |
846 |
|
} |
847 |
|
t0_id = smAdd_tri(sm,s_id,v0_id,v1_id,&t0); |
848 |
+ |
/* Add triangle to the locator */ |
849 |
+ |
smLocator_add_tri(sm,t0_id,s_id,v0_id,v1_id); |
850 |
+ |
|
851 |
|
t1_id = smAdd_tri(sm,s_id,v1_id,v2_id,&t1); |
852 |
+ |
smLocator_add_tri(sm,t1_id,s_id,v1_id,v2_id); |
853 |
|
t2_id = smAdd_tri(sm,s_id,v2_id,v0_id,&t2); |
854 |
< |
|
854 |
> |
smLocator_add_tri(sm,t2_id,s_id,v2_id,v0_id); |
855 |
> |
|
856 |
|
/* Set the neighbor pointers for the new tris */ |
857 |
|
T_NTH_NBR(t0,0) = t2_id; |
858 |
|
T_NTH_NBR(t0,1) = T_NTH_NBR(tri,0); |
872 |
|
nbr = SM_NTH_TRI(sm,T_NTH_NBR(tri,2)); |
873 |
|
T_NTH_NBR(nbr,T_NTH_NBR_PTR(tri_id,nbr)) = t2_id; |
874 |
|
|
875 |
+ |
smLocator_remove_tri(sm,tri_id); |
876 |
|
smDelete_tri(sm,tri_id); |
877 |
|
|
878 |
|
/* Fix up the new triangles*/ |
890 |
|
|
891 |
|
|
892 |
|
int |
893 |
< |
smPointLocate(sm,pt,type,which,norm) |
893 |
> |
smPointLocate(sm,pt,norm) |
894 |
|
SM *sm; |
895 |
|
FVECT pt; |
896 |
< |
char *type,*which; |
716 |
< |
char norm; |
896 |
> |
int norm; |
897 |
|
{ |
898 |
|
STREE *st; |
899 |
|
int tri; |
902 |
|
st = SM_LOCATOR(sm); |
903 |
|
if(norm) |
904 |
|
{ |
905 |
< |
point_on_sphere(npt,pt,SM_VIEW_CENTER(sm)); |
906 |
< |
tri = stPoint_locate(st,npt,type,which); |
905 |
> |
VSUB(npt,pt,SM_VIEW_CENTER(sm)); |
906 |
> |
tri = stPoint_locate(st,npt); |
907 |
|
} |
908 |
|
else |
909 |
< |
tri = stPoint_locate(st,pt,type,which); |
909 |
> |
tri = stPoint_locate(st,pt); |
910 |
|
return(tri); |
911 |
|
} |
912 |
|
|
913 |
|
QUADTREE |
914 |
< |
smPointLocateCell(sm,pt,v0,v1,v2,type,which,norm) |
914 |
> |
smPointLocateCell(sm,pt,norm,v0,v1,v2) |
915 |
|
SM *sm; |
916 |
< |
FVECT pt,v0,v1,v2; |
917 |
< |
char *type,*which; |
918 |
< |
char norm; |
916 |
> |
FVECT pt; |
917 |
> |
int norm; |
918 |
> |
FVECT v0,v1,v2; |
919 |
|
{ |
920 |
|
STREE *st; |
921 |
< |
QUADTREE qt; |
921 |
> |
QUADTREE *qtptr; |
922 |
|
FVECT npt; |
923 |
|
|
924 |
|
st = SM_LOCATOR(sm); |
925 |
|
if(norm) |
926 |
|
{ |
927 |
< |
point_on_sphere(npt,pt,SM_VIEW_CENTER(sm)); |
927 |
> |
VSUB(npt,pt,SM_VIEW_CENTER(sm)); |
928 |
|
|
929 |
< |
qt = stPoint_locate_cell(st,npt,v0,v1,v2,type,which); |
929 |
> |
qtptr = stPoint_locate_cell(st,npt,v0,v1,v2); |
930 |
|
} |
931 |
|
else |
932 |
< |
qt = stPoint_locate_cell(st,pt,v0,v1,v2,type,which); |
932 |
> |
qtptr = stPoint_locate_cell(st,pt,v0,v1,v2); |
933 |
|
|
934 |
< |
return(qt); |
934 |
> |
if(qtptr) |
935 |
> |
return(*qtptr); |
936 |
> |
else |
937 |
> |
return(EMPTY); |
938 |
|
} |
939 |
|
|
940 |
|
int |
945 |
|
int s_id; |
946 |
|
{ |
947 |
|
int t_id; |
765 |
– |
char type,which; |
948 |
|
double d; |
949 |
|
FVECT p; |
950 |
|
|
955 |
|
d = DIST(pt,SM_VIEW_CENTER(smMesh)); |
956 |
|
smDist_sum += 1.0/d; |
957 |
|
/************************************/ |
958 |
< |
t_id = smPointLocate(smMesh,pt,&type,&which,TRUE); |
959 |
< |
if(type==GT_FACE) |
958 |
> |
t_id = smPointLocate(smMesh,pt,TRUE); |
959 |
> |
if(t_id >= 0) |
960 |
|
s_id = smInsert_point_in_tri(smMesh,c,dir,pt,s_id,t_id); |
779 |
– |
else |
780 |
– |
if(type==GT_VERTEX) |
781 |
– |
s_id = smReplace_vertex(smMesh,c,dir,pt,t_id,s_id,type,which); |
961 |
|
#ifdef DEBUG |
962 |
|
else |
963 |
< |
eputs("smAdd_sample_to_mesh(): unrecognized type\n"); |
963 |
> |
{ |
964 |
> |
c[0] = 255;c[1]=0;c[2]=0; |
965 |
> |
s_id = smAdd_sample_point(sm,c,dir,pt); |
966 |
> |
eputs("smAdd_sample_to_mesh(): not found fg\n"); |
967 |
> |
} |
968 |
|
#endif |
969 |
|
} |
970 |
|
else if(s_id != -1) |
977 |
|
smDist_sum += 1.0/d; |
978 |
|
/************************************/ |
979 |
|
} |
980 |
< |
t_id = smPointLocate(smMesh,p,&type,&which,TRUE); |
981 |
< |
if(type==GT_FACE) |
980 |
> |
t_id = smPointLocate(smMesh,p,TRUE); |
981 |
> |
if(t_id != -1) |
982 |
|
s_id = smInsert_point_in_tri(smMesh,c,dir,p,s_id,t_id); |
800 |
– |
else |
801 |
– |
if(type==GT_VERTEX) |
802 |
– |
s_id = smReplace_vertex(smMesh,c,dir,p,t_id,s_id,type,which); |
983 |
|
#ifdef DEBUG |
984 |
|
else |
985 |
< |
eputs("smAdd_sample_to_mesh(): unrecognized type\n"); |
985 |
> |
eputs("smAdd_sample_to_mesh():not found reinsert\n"); |
986 |
|
#endif |
987 |
|
} |
988 |
|
/* Is a BG(sky point) */ |
989 |
|
else |
990 |
|
{ |
991 |
< |
t_id = smPointLocate(smMesh,dir,&type,&which,FALSE); |
992 |
< |
if(type==GT_FACE) |
991 |
> |
t_id = smPointLocate(smMesh,dir,FALSE); |
992 |
> |
if(t_id != -1) |
993 |
|
s_id = smInsert_point_in_tri(smMesh,c,dir,NULL,s_id,t_id); |
994 |
< |
else |
815 |
< |
if(type==GT_VERTEX) |
816 |
< |
s_id = smReplace_vertex(smMesh,c,dir,NULL,t_id,s_id,type,which); |
994 |
> |
|
995 |
|
#ifdef DEBUG |
996 |
|
else |
997 |
< |
eputs("smAdd_sample_to_mesh(): unrecognized type\n"); |
997 |
> |
eputs("smAdd_sample_to_mesh(): not found bg\n"); |
998 |
|
#endif |
999 |
|
} |
1000 |
|
return(s_id); |
1019 |
|
|
1020 |
|
{ |
1021 |
|
int s_id; |
1022 |
+ |
int debug=0; |
1023 |
|
|
1024 |
|
/* First check if this the first sample: if so initialize mesh */ |
1025 |
|
if(SM_NUM_SAMP(smMesh) == 0) |
847 |
– |
#ifdef TEST_DRIVER |
848 |
– |
smInit_mesh(smMesh,View.vp); |
849 |
– |
#else |
1026 |
|
smInit_mesh(smMesh,odev.v.vp); |
1027 |
< |
#endif |
1028 |
< |
s_id = smAdd_sample_to_mesh(smMesh,c,dir,p,-1); |
853 |
< |
#if 0 |
854 |
< |
{ |
855 |
< |
char buff[100]; |
856 |
< |
sprintf(buff,"Added sample %d\n",s_id); |
857 |
< |
eputs(buff); |
858 |
< |
} |
859 |
< |
#endif |
1027 |
> |
if(!debug) |
1028 |
> |
s_id = smAdd_sample_to_mesh(smMesh,c,dir,p,-1); |
1029 |
|
return(s_id); |
1030 |
|
|
1031 |
|
} |
1099 |
|
SM *sm; |
1100 |
|
int type; |
1101 |
|
{ |
1102 |
< |
int i,id; |
1102 |
> |
int i,id,tri_id,nbr_id; |
1103 |
|
int p[4],ids[4]; |
1104 |
|
int v0_id,v1_id,v2_id; |
1105 |
|
TRI *tris[4]; |
1109 |
|
|
1110 |
|
for(i=0; i < 4; i++) |
1111 |
|
{ |
1112 |
< |
VADD(cntr,stDefault_base[i],SM_VIEW_CENTER(sm)); |
1112 |
> |
VCOPY(cntr,stDefault_base[i]); |
1113 |
> |
cntr[0] += .01; |
1114 |
> |
cntr[1] += .02; |
1115 |
> |
cntr[2] += .03; |
1116 |
> |
VADD(cntr,cntr,SM_VIEW_CENTER(sm)); |
1117 |
|
point_on_sphere(d,cntr,SM_VIEW_CENTER(sm)); |
1118 |
|
id = smAdd_base_vertex(sm,cntr,d); |
1119 |
|
/* test to make sure vertex allocated */ |
1130 |
|
v2_id = p[stTri_verts[i][2]]; |
1131 |
|
if((ids[i] = smAdd_tri(sm, v0_id,v1_id,v2_id,&(tris[i])))== -1) |
1132 |
|
return(0); |
1133 |
+ |
smLocator_add_tri(sm,ids[i],v0_id,v1_id,v2_id); |
1134 |
|
} |
1135 |
|
/* Set neighbors */ |
1136 |
|
|
1137 |
< |
T_NTH_NBR(tris[0],0) = ids[3]; |
1138 |
< |
T_NTH_NBR(tris[0],1) = ids[2]; |
1139 |
< |
T_NTH_NBR(tris[0],2) = ids[1]; |
1137 |
> |
for(tri_id=0;tri_id < 4; tri_id++) |
1138 |
> |
for(nbr_id=0; nbr_id < 3; nbr_id++) |
1139 |
> |
T_NTH_NBR(tris[tri_id],nbr_id) = smBase_nbrs[tri_id][nbr_id]; |
1140 |
|
|
967 |
– |
T_NTH_NBR(tris[1],0) = ids[3]; |
968 |
– |
T_NTH_NBR(tris[1],1) = ids[0]; |
969 |
– |
T_NTH_NBR(tris[1],2) = ids[2]; |
970 |
– |
|
971 |
– |
T_NTH_NBR(tris[2],0) = ids[3]; |
972 |
– |
T_NTH_NBR(tris[2],1) = ids[1]; |
973 |
– |
T_NTH_NBR(tris[2],2) = ids[0]; |
974 |
– |
|
975 |
– |
T_NTH_NBR(tris[3],0) = ids[1]; |
976 |
– |
T_NTH_NBR(tris[3],1) = ids[2]; |
977 |
– |
T_NTH_NBR(tris[3],2) = ids[0]; |
1141 |
|
return(1); |
1142 |
|
|
1143 |
|
} |
1147 |
|
smNext_tri_flag_set(sm,i,which,b) |
1148 |
|
SM *sm; |
1149 |
|
int i,which; |
1150 |
< |
char b; |
1150 |
> |
int b; |
1151 |
|
{ |
1152 |
|
|
1153 |
|
for(; i < SM_TRI_CNT(sm);i++) |
1154 |
|
{ |
992 |
– |
if(!SM_IS_NTH_T_FLAG(sm,i,which)) |
993 |
– |
continue; |
1155 |
|
|
1156 |
+ |
if(!SM_IS_NTH_T_FLAG(sm,i,which)) |
1157 |
+ |
continue; |
1158 |
|
if(!b) |
1159 |
|
break; |
1160 |
|
if((b==1) && !SM_BG_TRI(sm,i)) |
1181 |
|
|
1182 |
|
|
1183 |
|
|
1184 |
< |
qtTri_verts_from_id(t_id,v0,v1,v2) |
1184 |
> |
qtTri_from_id(t_id,v0,v1,v2,n0,n1,n2,v0_idp,v1_idp,v2_idp) |
1185 |
|
int t_id; |
1186 |
|
FVECT v0,v1,v2; |
1187 |
+ |
FVECT n0,n1,n2; |
1188 |
+ |
int *v0_idp,*v1_idp,*v2_idp; |
1189 |
|
{ |
1190 |
|
TRI *t; |
1191 |
|
int v0_id,v1_id,v2_id; |
1195 |
|
v1_id = T_NTH_V(t,1); |
1196 |
|
v2_id = T_NTH_V(t,2); |
1197 |
|
|
1198 |
< |
smDir(smMesh,v0,v0_id); |
1034 |
< |
smDir(smMesh,v1,v1_id); |
1035 |
< |
smDir(smMesh,v2,v2_id); |
1036 |
< |
|
1037 |
< |
} |
1038 |
< |
|
1039 |
< |
|
1040 |
< |
int |
1041 |
< |
smIntersectTriSet(sm,t_set,orig,dir,pt) |
1042 |
< |
SM *sm; |
1043 |
< |
OBJECT *t_set; |
1044 |
< |
FVECT orig,dir,pt; |
1045 |
< |
{ |
1046 |
< |
OBJECT *optr; |
1047 |
< |
int i,t_id,v_id; |
1048 |
< |
TRI *tri; |
1049 |
< |
FVECT p0,p1,p2; |
1050 |
< |
char type,which; |
1051 |
< |
int p0_id,p1_id,p2_id; |
1052 |
< |
|
1053 |
< |
for(optr = QT_SET_PTR(t_set),i = QT_SET_CNT(t_set); i > 0; i--) |
1054 |
< |
{ |
1055 |
< |
t_id = QT_SET_NEXT_ELEM(optr); |
1056 |
< |
tri = SM_NTH_TRI(sm,t_id); |
1057 |
< |
p0_id = T_NTH_V(tri,0); |
1058 |
< |
p1_id = T_NTH_V(tri,1); |
1059 |
< |
p2_id = T_NTH_V(tri,2); |
1060 |
< |
VCOPY(p0,SM_NTH_WV(sm,p0_id)); |
1061 |
< |
VCOPY(p1,SM_NTH_WV(sm,p1_id)); |
1062 |
< |
VCOPY(p2,SM_NTH_WV(sm,p2_id)); |
1063 |
< |
if(type = ray_intersect_tri(orig,dir,p0,p1,p2,pt,&which)) |
1064 |
< |
{ |
1065 |
< |
if(type==GT_VERTEX) |
1066 |
< |
return(T_NTH_V(tri,which)); |
1067 |
< |
v_id = smClosest_vertex_in_w_tri(sm,p0_id,p1_id,p2_id,pt); |
1068 |
< |
return(v_id); |
1069 |
< |
} |
1070 |
< |
} |
1071 |
< |
return(-1); |
1072 |
< |
} |
1073 |
< |
|
1074 |
< |
/* |
1075 |
< |
* int |
1076 |
< |
* smTraceRay(SM *sm,FVECT orig, FVECT dir,FVECT v0,FVECT v1,FVECT v2,FVECT r) |
1077 |
< |
* |
1078 |
< |
* Intersect the ray with triangle v0v1v2, return intersection point in r |
1079 |
< |
* |
1080 |
< |
* Assumes orig,v0,v1,v2 are in spherical coordinates, and orig is |
1081 |
< |
* unit |
1082 |
< |
*/ |
1083 |
< |
char |
1084 |
< |
smTraceRay(sm,orig,dir,v0,v1,v2,r) |
1085 |
< |
SM *sm; |
1086 |
< |
FVECT orig,dir; |
1087 |
< |
FVECT v0,v1,v2; |
1088 |
< |
FVECT r; |
1089 |
< |
{ |
1090 |
< |
FVECT n,p[3],d; |
1091 |
< |
double pt[3],r_eps; |
1092 |
< |
char i; |
1093 |
< |
int which; |
1094 |
< |
|
1095 |
< |
/* Find the plane equation for the triangle defined by the edge v0v1 and |
1096 |
< |
the view center*/ |
1097 |
< |
VCROSS(n,v0,v1); |
1098 |
< |
/* Intersect the ray with this plane */ |
1099 |
< |
i = intersect_ray_plane(orig,dir,n,0.0,&(pt[0]),p[0]); |
1100 |
< |
if(i) |
1101 |
< |
which = 0; |
1102 |
< |
else |
1103 |
< |
which = -1; |
1104 |
< |
|
1105 |
< |
VCROSS(n,v1,v2); |
1106 |
< |
i = intersect_ray_plane(orig,dir,n,0.0,&(pt[1]),p[1]); |
1107 |
< |
if(i) |
1108 |
< |
if((which==-1) || pt[1] < pt[0]) |
1109 |
< |
which = 1; |
1110 |
< |
|
1111 |
< |
VCROSS(n,v2,v0); |
1112 |
< |
i = intersect_ray_plane(orig,dir,n,0.0,&(pt[2]),p[2]); |
1113 |
< |
if(i) |
1114 |
< |
if((which==-1) || pt[2] < pt[which]) |
1115 |
< |
which = 2; |
1116 |
< |
|
1117 |
< |
if(which != -1) |
1198 |
> |
if(v0) |
1199 |
|
{ |
1200 |
< |
/* Return point that is K*eps along projection of the ray on |
1201 |
< |
the sphere to push intersection point p[which] into next cell |
1202 |
< |
*/ |
1122 |
< |
normalize(p[which]); |
1123 |
< |
/* Calculate the ray perpendicular to the intersection point: approx |
1124 |
< |
the direction moved along the sphere a distance of K*epsilon*/ |
1125 |
< |
r_eps = -DOT(p[which],dir); |
1126 |
< |
VSUM(n,dir,p[which],r_eps); |
1127 |
< |
/* Calculate the length along ray p[which]-dir needed to move to |
1128 |
< |
cause a move along the sphere of k*epsilon |
1129 |
< |
*/ |
1130 |
< |
r_eps = DOT(n,dir); |
1131 |
< |
VSUM(r,p[which],dir,(20*FTINY)/r_eps); |
1132 |
< |
normalize(r); |
1133 |
< |
return(TRUE); |
1200 |
> |
VCOPY(v0,SM_NTH_WV(smMesh,v0_id)); |
1201 |
> |
VCOPY(v1,SM_NTH_WV(smMesh,v1_id)); |
1202 |
> |
VCOPY(v2,SM_NTH_WV(smMesh,v2_id)); |
1203 |
|
} |
1204 |
< |
else |
1204 |
> |
if(n0) |
1205 |
|
{ |
1206 |
< |
/* Unable to find intersection: move along ray and try again */ |
1207 |
< |
r_eps = -DOT(orig,dir); |
1208 |
< |
VSUM(n,dir,orig,r_eps); |
1209 |
< |
r_eps = DOT(n,dir); |
1141 |
< |
VSUM(r,orig,dir,(20*FTINY)/r_eps); |
1142 |
< |
normalize(r); |
1143 |
< |
#ifdef DEBUG |
1144 |
< |
eputs("smTraceRay:Ray does not intersect triangle"); |
1145 |
< |
#endif |
1146 |
< |
return(FALSE); |
1206 |
> |
smDir(smMesh,n0,v0_id); |
1207 |
> |
smDir(smMesh,n1,v1_id); |
1208 |
> |
smDir(smMesh,n2,v2_id); |
1209 |
> |
|
1210 |
|
} |
1211 |
+ |
if(v0_idp) |
1212 |
+ |
{ |
1213 |
+ |
*v0_idp = v0_id; |
1214 |
+ |
*v1_idp = v1_id; |
1215 |
+ |
*v2_idp = v2_id; |
1216 |
+ |
} |
1217 |
|
} |
1218 |
|
|
1219 |
|
|
1229 |
|
FVECT orig,dir; |
1230 |
|
{ |
1231 |
|
FVECT r,v0,v1,v2,a,b,p; |
1232 |
< |
OBJECT os[MAXCSET+1],t_set[MAXSET+1]; |
1232 |
> |
OBJECT os[QT_MAXCSET+1],t_set[QT_MAXSET+1],*ts; |
1233 |
|
QUADTREE qt; |
1234 |
|
int s_id; |
1235 |
|
double d; |
1253 |
|
d = -DOT(b,dir); |
1254 |
|
if(EQUAL_VEC3(orig,SM_VIEW_CENTER(smMesh)) || EQUAL(fabs(d),1.0)) |
1255 |
|
{ |
1256 |
< |
qt = smPointLocateCell(smMesh,dir,v0,v1,v2,NULL,NULL,FALSE); |
1256 |
> |
qt = smPointLocateCell(smMesh,dir,FALSE,NULL,NULL,NULL); |
1257 |
|
/* Test triangles in the set for intersection with Ray:returns |
1258 |
|
first found |
1259 |
|
*/ |
1260 |
< |
qtgetset(t_set,qt); |
1261 |
< |
s_id = smIntersectTriSet(smMesh,t_set,orig,dir,p); |
1262 |
< |
#ifdef TEST_DRIVER |
1260 |
> |
ts = qtqueryset(qt); |
1261 |
> |
s_id = intersect_tri_set(ts,orig,dir,p); |
1262 |
> |
#ifdef DEBUG_TEST_DRIVER |
1263 |
|
VCOPY(Pick_point[0],p); |
1264 |
|
#endif |
1265 |
|
return(s_id); |
1268 |
|
{ |
1269 |
|
/* Starting with orig, Walk along projection of ray onto sphere */ |
1270 |
|
point_on_sphere(r,orig,SM_VIEW_CENTER(smMesh)); |
1271 |
< |
qt = smPointLocateCell(smMesh,r,v0,v1,v2,NULL,NULL,FALSE); |
1203 |
< |
qtgetset(t_set,qt); |
1271 |
> |
qt = smPointLocateCell(smMesh,r,FALSE,v0,v1,v2); |
1272 |
|
/* os will contain all triangles seen thus far */ |
1273 |
+ |
qtgetset(t_set,qt); |
1274 |
|
setcopy(os,t_set); |
1275 |
|
|
1276 |
|
/* Calculate ray perpendicular to dir: when projection ray is // to dir, |
1280 |
|
d = DOT(a,b); |
1281 |
|
while(d > 0) |
1282 |
|
{ |
1283 |
< |
s_id = smIntersectTriSet(smMesh,t_set,orig,dir,p); |
1284 |
< |
#ifdef TEST_DRIVER |
1283 |
> |
s_id = intersect_tri_set(t_set,orig,dir,p); |
1284 |
> |
#ifdef DEBUG_TEST_DRIVER |
1285 |
|
VCOPY(Pick_point[0],p); |
1286 |
|
#endif |
1287 |
|
if(s_id != EMPTY) |
1288 |
|
return(s_id); |
1289 |
|
/* Find next cell that projection of ray intersects */ |
1290 |
< |
smTraceRay(smMesh,r,dir,v0,v1,v2,r); |
1291 |
< |
qt = smPointLocateCell(smMesh,r,v0,v1,v2,NULL,NULL,FALSE); |
1290 |
> |
traceRay(r,dir,v0,v1,v2,r); |
1291 |
> |
qt = smPointLocateCell(smMesh,r,FALSE,v0,v1,v2); |
1292 |
|
qtgetset(t_set,qt); |
1293 |
|
/* Check triangles in set against those seen so far(os):only |
1294 |
|
check new triangles for intersection (t_set') |
1295 |
|
*/ |
1296 |
|
check_set(t_set,os); |
1297 |
< |
d = DOT(a,r); |
1297 |
> |
d = DOT(a,r); |
1298 |
|
} |
1299 |
|
} |
1300 |
< |
#ifdef DEBUG |
1300 |
> |
#ifdef DEBUG |
1301 |
|
eputs("smFindSamp():Pick Ray did not intersect mesh"); |
1302 |
|
#endif |
1303 |
|
return(EMPTY); |
1304 |
|
} |
1305 |
|
|
1306 |
|
|
1307 |
< |
smRebuild_mesh(sm,vptr) |
1307 |
> |
smRebuild_mesh(sm,vp) |
1308 |
|
SM *sm; |
1309 |
< |
VIEW *vptr; |
1309 |
> |
FVECT vp; |
1310 |
|
{ |
1311 |
|
int i; |
1312 |
|
FVECT dir; |
1314 |
|
FVECT p,ov; |
1315 |
|
|
1316 |
|
/* Clear the mesh- and rebuild using the current sample array */ |
1248 |
– |
#ifdef TEST_DRIVER |
1249 |
– |
View = *vptr; |
1250 |
– |
#endif |
1317 |
|
|
1318 |
< |
VSUB(ov,vptr->vp,SM_VIEW_CENTER(sm)); |
1319 |
< |
smInit_mesh(sm,vptr->vp); |
1318 |
> |
VSUB(ov,vp,SM_VIEW_CENTER(sm)); |
1319 |
> |
smInit_mesh(sm,vp); |
1320 |
|
|
1321 |
|
SM_FOR_ALL_SAMPLES(sm,i) |
1322 |
|
{ |
1325 |
|
smAdd_sample_to_mesh(sm,NULL,NULL,NULL,i); |
1326 |
|
} |
1327 |
|
} |
1328 |
+ |
|
1329 |
+ |
int |
1330 |
+ |
intersect_tri_set(t_set,orig,dir,pt) |
1331 |
+ |
OBJECT *t_set; |
1332 |
+ |
FVECT orig,dir,pt; |
1333 |
+ |
{ |
1334 |
+ |
OBJECT *optr; |
1335 |
+ |
int i,t_id,id; |
1336 |
+ |
int pid0,pid1,pid2; |
1337 |
+ |
FVECT p0,p1,p2,p; |
1338 |
+ |
TRI *t; |
1339 |
+ |
|
1340 |
+ |
optr = QT_SET_PTR(t_set); |
1341 |
+ |
for(i = QT_SET_CNT(t_set); i > 0; i--) |
1342 |
+ |
{ |
1343 |
+ |
t_id = QT_SET_NEXT_ELEM(optr); |
1344 |
+ |
|
1345 |
+ |
t = SM_NTH_TRI(smMesh,t_id); |
1346 |
+ |
pid0 = T_NTH_V(t,0); |
1347 |
+ |
pid1 = T_NTH_V(t,1); |
1348 |
+ |
pid2 = T_NTH_V(t,2); |
1349 |
+ |
VCOPY(p0,SM_NTH_WV(smMesh,pid0)); |
1350 |
+ |
VCOPY(p1,SM_NTH_WV(smMesh,pid1)); |
1351 |
+ |
VCOPY(p2,SM_NTH_WV(smMesh,pid2)); |
1352 |
+ |
if(ray_intersect_tri(orig,dir,p0,p1,p2,p)) |
1353 |
+ |
{ |
1354 |
+ |
id = closest_point_in_tri(p0,p1,p2,p,pid0,pid1,pid2); |
1355 |
+ |
|
1356 |
+ |
if(pt) |
1357 |
+ |
VCOPY(pt,p); |
1358 |
+ |
#ifdef DEBUG_TEST_DRIVER |
1359 |
+ |
Pick_tri = t_id; |
1360 |
+ |
Pick_samp = id; |
1361 |
+ |
VCOPY(Pick_point[0],p); |
1362 |
+ |
#endif |
1363 |
+ |
return(id); |
1364 |
+ |
} |
1365 |
+ |
} |
1366 |
+ |
return(-1); |
1367 |
+ |
} |
1368 |
+ |
|
1369 |
+ |
int |
1370 |
+ |
ray_trace_check_set(qtptr,orig,dir,tptr,os) |
1371 |
+ |
QUADTREE *qtptr; |
1372 |
+ |
FVECT orig,dir; |
1373 |
+ |
int *tptr; |
1374 |
+ |
OBJECT *os; |
1375 |
+ |
{ |
1376 |
+ |
OBJECT tset[QT_MAXSET+1]; |
1377 |
+ |
double dt,t; |
1378 |
+ |
int found; |
1379 |
+ |
FVECT o; |
1380 |
+ |
|
1381 |
+ |
|
1382 |
+ |
if(!QT_IS_EMPTY(*qtptr)) |
1383 |
+ |
{ |
1384 |
+ |
VADD(o,orig,SM_VIEW_CENTER(smMesh)); |
1385 |
+ |
qtgetset(tset,*qtptr); |
1386 |
+ |
/* Check triangles in set against those seen so far(os):only |
1387 |
+ |
check new triangles for intersection (t_set') |
1388 |
+ |
*/ |
1389 |
+ |
check_set(tset,os); |
1390 |
+ |
if((found = intersect_tri_set(tset,o,dir,NULL))!= -1) |
1391 |
+ |
{ |
1392 |
+ |
*tptr = found; |
1393 |
+ |
return(QT_DONE); |
1394 |
+ |
} |
1395 |
+ |
} |
1396 |
+ |
return(FALSE); |
1397 |
+ |
} |
1398 |
+ |
|
1399 |
+ |
int |
1400 |
+ |
smFindSamp_opt(orig,dir) |
1401 |
+ |
FVECT orig,dir; |
1402 |
+ |
{ |
1403 |
+ |
FVECT b,p,o; |
1404 |
+ |
OBJECT *ts; |
1405 |
+ |
QUADTREE qt; |
1406 |
+ |
int s_id; |
1407 |
+ |
double d; |
1408 |
+ |
|
1409 |
+ |
/* r is the normalized vector from the view center to the current |
1410 |
+ |
* ray point ( starting with "orig"). Find the cell that r falls in, |
1411 |
+ |
* and test the ray against all triangles stored in the cell. If |
1412 |
+ |
* the test fails, trace the projection of the ray across to the |
1413 |
+ |
* next cell it intersects: iterate until either an intersection |
1414 |
+ |
* is found, or the projection ray is // to the direction. The sample |
1415 |
+ |
* corresponding to the triangle vertex closest to the intersection |
1416 |
+ |
* point is returned. |
1417 |
+ |
*/ |
1418 |
+ |
|
1419 |
+ |
/* First test if "orig" coincides with the View_center or if "dir" is |
1420 |
+ |
parallel to r formed by projecting "orig" on the sphere. In |
1421 |
+ |
either case, do a single test against the cell containing the |
1422 |
+ |
intersection of "dir" and the sphere |
1423 |
+ |
*/ |
1424 |
+ |
/* orig will be updated-so preserve original value */ |
1425 |
+ |
if(!smMesh) |
1426 |
+ |
return; |
1427 |
+ |
point_on_sphere(b,orig,SM_VIEW_CENTER(smMesh)); |
1428 |
+ |
d = -DOT(b,dir); |
1429 |
+ |
if(EQUAL_VEC3(orig,SM_VIEW_CENTER(smMesh)) || EQUAL(fabs(d),1.0)) |
1430 |
+ |
{ |
1431 |
+ |
qt = smPointLocateCell(smMesh,dir,FALSE,NULL,NULL,NULL); |
1432 |
+ |
/* Test triangles in the set for intersection with Ray:returns |
1433 |
+ |
first found |
1434 |
+ |
*/ |
1435 |
+ |
ts = qtqueryset(qt); |
1436 |
+ |
s_id = intersect_tri_set(ts,orig,dir,p); |
1437 |
+ |
#ifdef DEBUG_TEST_DRIVER |
1438 |
+ |
VCOPY(Pick_point[0],p); |
1439 |
+ |
#endif |
1440 |
+ |
} |
1441 |
+ |
else |
1442 |
+ |
{ |
1443 |
+ |
OBJECT t_set[QT_MAXCSET+1]; |
1444 |
+ |
/* Test each of the root triangles against point id */ |
1445 |
+ |
QT_CLEAR_SET(t_set); |
1446 |
+ |
VSUB(o,orig,SM_VIEW_CENTER(smMesh)); |
1447 |
+ |
ST_CLEAR_FLAGS(SM_LOCATOR(smMesh)); |
1448 |
+ |
s_id=stTrace_ray(SM_LOCATOR(smMesh),o,dir,ray_trace_check_set,&s_id,t_set); |
1449 |
+ |
} |
1450 |
+ |
return(s_id); |
1451 |
+ |
} |
1452 |
+ |
|
1453 |
+ |
|
1454 |
+ |
|
1455 |
+ |
|
1456 |
+ |
|
1457 |
+ |
|
1458 |
+ |
|
1459 |
+ |
|
1460 |
+ |
|
1461 |
+ |
|
1462 |
|
|
1463 |
|
|