/*
* Zoltan_Oct_global_insert(region)
*
* try to insert the region into any of the local-rooted subtrees
*
* return the octant pointer if successful, or NULL if region's
* centroid does not lie within the local octree. This could
* be due to centroid not lying within any local root, or also
* if some local root's subtree is off-processor.
*
* During insertion, refinement may be performed.
* In that case, the returned octant is an ancestor
* of the octant to which the region is attached.
*
*/
static pOctant Zoltan_Oct_global_insert(ZZ *zz, pRegion region)
{
pOctant oct; /* octree octant */
OCT_Global_Info *OCT_info = (OCT_Global_Info *)(zz->LB.Data_Structure);
oct = NULL;
/* find the octant which the object lies in */
oct=Zoltan_Oct_global_find(OCT_info,region->Coord);
/* if octant is found, try to insert the region */
if (oct)
if (!Zoltan_Oct_subtree_insert(zz, oct, region)) { /* inserting region */
fprintf(stderr,"OCT Zoltan_Oct_global_insert: insertion failed\n");
abort();
}
return(oct);
}
/*
* void Zoltan_Oct_insert_orphan(pRegion region)
*
* Insert orphan regions migrated from off processors, or to insert
* regions that lie on the boundary.
*/
static int Zoltan_Oct_insert_orphan(ZZ *zz, Region reg) {
pRList RootList; /* list of all local roots */
pOctant RootOct;
int rflag; /* flag to indicate region fits in octant */
int i, j; /* index counters */
double upper, /* upper bounds of the octant */
lower; /* lower bounds of the octant */
OCT_Global_Info *OCT_info = (OCT_Global_Info *)(zz->LB.Data_Structure);
char *yo = "Zoltan_Oct_insert_orphan";
int ierr = ZOLTAN_OK;
if (OCT_info->OCT_dimension == 2)
i = 2; /* ignore z coordinates */
else
i = 3;
rflag = 0;
RootList = Zoltan_Oct_POct_localroots(OCT_info); /* get a list all local roots */
while((RootOct = RL_nextRootOctant(&RootList))) {
rflag = 1;
for (j=0; j<i; j++) {
lower = RootOct->min[j];
upper = RootOct->max[j];
if (reg.Coord[j]<lower || reg.Coord[j]>upper) {
/* if region coord lie outside bounds, then cannot fit */
rflag = 0;
break;
}
}
if(rflag == 1) {
/* region fits inside octant */
/* found a place to insert region */
Zoltan_Oct_subtree_insert(zz, RootOct, ®);
return ierr;
}
}
ierr = ZOLTAN_WARN;
ZOLTAN_TRACE_DETAIL(zz, yo, "could not insert region");
fprintf(stderr,"%s failed to insert %f %f %f on proc %d\n",yo, reg.Coord[0], reg.Coord[1], reg.Coord[2], zz->Proc);
RootList = Zoltan_Oct_POct_localroots(OCT_info);
RL_printRootOctants(RootList);
return ierr;
}
