/** Given edge e:(n1, n2), remove the two elements (n1,n2,n3) and
(n2,n1,n4) adjacent to e, and bisect e by adding node
n5. Add elements (n1,n5,n3), (n5,n2,n3), (n5,n1,n4) and (n2,n5,n4);
returns new node n5.
n3 n3
o o
/ \ /|\
/ \ / | \
/ \ / | \
/ \ / |n5 \
n1 o---------o n2 n1 o----o----o n2
\ / \ | /
\ / \ | /
\ / \ | /
\ / \|/
o o
n4 n4
*/
int FEM_Adapt::edge_bisect_help(int e1, int e2, int n1, int n2, int e1_n1,
int e1_n2, int e1_n3, int e2_n1, int e2_n2,
int e2_n3, int n3, int n4)
{
int n5;
int numNodes = 4;
int numElems = 2;
int numNodesNew = 5;
int numElemsNew = 4;
int locknodes[5];
int lockelems[4];
int elemConn[3];
locknodes[0] = n1;
locknodes[1] = n2;
locknodes[2] = n3;
locknodes[3] = n4;
locknodes[4] = -1;
lockelems[0] = e1;
lockelems[1] = e2;
lockelems[2] = -1;
lockelems[3] = -1;
//FEM_Modify_Lock(theMesh, locknodes, numNodes, lockelems, numElems);
int e1chunk=-1, e2chunk=-1, e3chunk=-1, e4chunk=-1, n5chunk=-1;
int index = theMod->getIdx();
#ifdef DEBUG_1
CkPrintf("Bisect edge %d->%d on chunk %d\n", n1, n2, theMod->getfmUtil()->getIdx());
#endif
//verify quality
bool flag = theMod->fmAdaptAlgs->controlQualityR(n1,n2,n3,n4);
if(flag) return -1;
//add node
if(e1==-1) e1chunk=-1;
else if(e1>=0) e1chunk=index;
else {
int ghostid = FEM_To_ghost_index(e1);
const IDXL_Rec *irec = theMesh->elem[0].ghost->ghostRecv.getRec(ghostid);
CkAssert(irec->getShared()==1);
e1chunk = irec->getChk(0);
}
if(e2==-1) e2chunk=-1;
else if(e2>=0) e2chunk=index;
else {
int ghostid = FEM_To_ghost_index(e2);
const IDXL_Rec *irec = theMesh->elem[0].ghost->ghostRecv.getRec(ghostid);
CkAssert(irec->getShared()==1);
e2chunk = irec->getChk(0);
}
int adjnodes[2];
adjnodes[0] = n1;
adjnodes[1] = n2;
int *chunks;
int numChunks=0;
int forceshared = 0;
if(e1chunk==e2chunk || (e1chunk==-1 || e2chunk==-1)) {
forceshared = -1;
numChunks = 1;
chunks = new int[1];
if(e1chunk!=-1) chunks[0] = e1chunk;
else chunks[0] = e2chunk;
}
else {
numChunks = 2;
chunks = new int[2];
chunks[0] = e1chunk;
chunks[1] = e2chunk;
}
n5 = FEM_add_node(theMesh,adjnodes,2,chunks,numChunks,forceshared);
delete[] chunks;
//lock this node immediately
FEM_Modify_LockN(theMesh, n5, 0);
//remove elements
e1chunk = FEM_remove_element(theMesh, e1, 0);
e2chunk = FEM_remove_element(theMesh, e2, 0); // assumes intelligent behavior when no e2 exists
// hmm... if e2 is a ghost and we remove it and create all the new elements
// locally, then we don't really need to add a *shared* node
//but we are not moving chunk boundaries for bisect
if(e1chunk==-1 || e2chunk==-1) {
//it is fine, let it continue
e4chunk = e2chunk;
e3chunk = e1chunk;
}
else if(e1chunk==e2chunk && e1chunk!=index) {
n5chunk = e1chunk;
e4chunk = e2chunk;
e3chunk = e1chunk;
}
else {
//there can be a lot of conditions, but we do not have to do aything special now
n5chunk = -1;
e4chunk = e2chunk;
e3chunk = e1chunk;
}
// add n1, n5, n3
elemConn[e1_n1] = n1; elemConn[e1_n2] = n5; elemConn[e1_n3] = n3;
lockelems[0] = FEM_add_element(theMesh, elemConn, 3, 0, e1chunk);
theMod->fmUtil->copyElemData(0,e1,lockelems[0]);
// add n2, n5, n3
elemConn[e1_n1] = n5; elemConn[e1_n2] = n2; elemConn[e1_n3] = n3;
lockelems[1] = FEM_add_element(theMesh, elemConn, 3, 0, e3chunk);
theMod->fmUtil->copyElemData(0,e1,lockelems[1]);
if (e2 != -1) { // e2 exists
// add n1, n5, n4
elemConn[e2_n1] = n1; elemConn[e2_n2] = n5; elemConn[e2_n3] = n4;
lockelems[2] = FEM_add_element(theMesh, elemConn, 3, 0, e2chunk);
theMod->fmUtil->copyElemData(0,e2,lockelems[2]);
// add n2, n5, n4
elemConn[e2_n1] = n5; elemConn[e2_n2] = n2; elemConn[e2_n3] = n4;
lockelems[3] = FEM_add_element(theMesh, elemConn, 3, 0, e4chunk);
theMod->fmUtil->copyElemData(0,e2,lockelems[3]);
}
FEM_purge_element(theMesh,e1,0);
FEM_purge_element(theMesh,e2,0);
//get rid of some unnecessary ghost node sends
for(int i=0; i<4;i++) {
int nodeToUpdate = -1;
if(i==0) nodeToUpdate = n1;
else if(i==1) nodeToUpdate = n2;
else if(i==2) nodeToUpdate = n3;
else if(i==3) nodeToUpdate = n4;
//if any of the chunks sharing this node sends this as a ghost, then all of them have to
//so find out the set of chunks I need to send this as a ghost to
//collect info from each of the shared chunks, do a union of all these chunks
//send this updated list to everyone.
//if anyone needs to add or delete some ghosts, they will
int *chkl, numchkl=0;
CkVec<int> finalchkl;
theMod->fmUtil->findGhostSend(nodeToUpdate, chkl, numchkl);
for(int j=0; j<numchkl; j++) {
finalchkl.push_back(chkl[j]);
}
if(numchkl>0) delete[] chkl;
const IDXL_Rec *irec=theMesh->node.shared.getRec(nodeToUpdate);
int numchunks=0;
int *chunks1, *inds1;
if(irec) {
numchunks = irec->getShared();
chunks1 = new int[numchunks];
inds1 = new int[numchunks];
for(int j=0; j<numchunks; j++) {
chunks1[j] = irec->getChk(j);
inds1[j] = irec->getIdx(j);
}
}
for(int j=0; j<numchunks; j++) {
findgsMsg *fmsg = meshMod[chunks1[j]].findghostsend(index,inds1[j]);
if(fmsg->numchks>0) {
for(int k=0; k<fmsg->numchks; k++) {
bool shouldbeadded = true;
for(int l=0; l<finalchkl.size(); l++) {
if(fmsg->chunks[k]==finalchkl[l]) {
shouldbeadded = false;
break;
}
}
if(shouldbeadded) finalchkl.push_back(fmsg->chunks[k]);
}
}
delete fmsg;
}
int *finall, numfinall=finalchkl.size();
if(numfinall>0) finall = new int[numfinall];
for(int j=0; j<numfinall; j++) finall[j] = finalchkl[j];
finalchkl.free();
theMod->fmUtil->UpdateGhostSend(nodeToUpdate, finall, numfinall);
for(int j=0; j<numchunks; j++) {
verifyghostsendMsg *vmsg = new(numfinall)verifyghostsendMsg();
vmsg->fromChk = index;
vmsg->sharedIdx = inds1[j];
vmsg->numchks = numfinall;
for(int k=0; k<numfinall; k++) vmsg->chunks[k] = finall[k];
meshMod[chunks1[j]].updateghostsend(vmsg);
}
if(numfinall>0) delete[] finall;
if(numchunks>0) {
delete[] chunks1;
delete[] inds1;
}
}
FEM_Modify_UnlockN(theMesh, n5, 0);
return n5;
}
/** Perform a Delaunay flip of the edge (n1, n2) returning 1 if successful, 0 if
not (likely due to the edge being on a boundary). The convexity of the
quadrilateral formed by two faces incident to edge (n1, n2) is assumed. n1
and n2 are assumed to be local to this chunk. An adjacency test is
performed on n1 and n2 by searching for an element with edge [n1,n2].
n3 n3
o o
/ \ /|\
/ \ / | \
/ \ / | \
/ \ / | \
n1 o---------o n2 n1 o | o n2
\ / \ | /
\ / \ | /
\ / \ | /
\ / \|/
o o
n4 n4
*/
int FEM_Adapt::edge_flip_help(int e1, int e2, int n1, int n2, int e1_n1,
int e1_n2, int e1_n3, int n3, int n4, int *locknodes)
{
int numNodes = 4;
int numElems = 2;
int lockelems[2];
int elemConn[3];
locknodes[0] = n1;
locknodes[1] = n2;
locknodes[2] = n3;
locknodes[3] = n4;
lockelems[0] = e1;
lockelems[1] = e2;
if(n1 < 0 || n2 < 0) {
return -1;
}
int index = theMod->getIdx();
bool flag = theMod->fmAdaptAlgs->controlQualityF(n1,n2,n3,n4);
if(flag) return -1;
int e1Topurge = e1;
int e2Topurge = e2;
#ifdef DEBUG_1
CkPrintf("Flipping edge %d->%d on chunk %d\n", n1, n2, theMod->getfmUtil()->getIdx());
#endif
//FEM_Modify_Lock(theMesh, locknodes, numNodes, lockelems, numElems);
//if any of the two elements is remote, eat those
if(n3 < 0) {
e1Topurge = theMod->fmUtil->eatIntoElement(e1);
theMesh->e2n_getAll(e1Topurge,elemConn);
for(int i=0; i<3; i++) {
if(elemConn[i]!=n1 && elemConn[i]!=n2) {
n3 = elemConn[i];
}
}
locknodes[2] = n3;
}
if(n4 < 0) {
e2Topurge = theMod->fmUtil->eatIntoElement(e2);
theMesh->e2n_getAll(e2Topurge,elemConn);
for(int i=0; i<3; i++) {
if(elemConn[i]!=n1 && elemConn[i]!=n2) {
n4 = elemConn[i];
}
}
locknodes[3] = n4;
}
FEM_remove_element(theMesh,e1Topurge,0,0);
FEM_remove_element(theMesh,e2Topurge,0,0);
// add n1, n3, n4
elemConn[e1_n1] = n1; elemConn[e1_n2] = n4; elemConn[e1_n3] = n3;
lockelems[0] = FEM_add_element(theMesh, elemConn, 3, 0, index);
//the attributes should really be interpolated, i.e. on both new elems,
//the values should be an average of the previous two elements
theMod->fmUtil->copyElemData(0,e1Topurge,lockelems[0]);
// add n2, n3, n4
elemConn[e1_n1] = n4; elemConn[e1_n2] = n2; elemConn[e1_n3] = n3;
lockelems[1] = FEM_add_element(theMesh, elemConn, 3, 0, index);
theMod->fmUtil->copyElemData(0,e1Topurge,lockelems[1]); //both of the new elements copy from one element
//purge the two elements
FEM_purge_element(theMesh,e1Topurge,0);
FEM_purge_element(theMesh,e2Topurge,0);
//get rid of some unnecessary ghost node sends
for(int i=0; i<4;i++) {
int nodeToUpdate = -1;
if(i==0) nodeToUpdate = n1;
else if(i==1) nodeToUpdate = n2;
else if(i==2) nodeToUpdate = n3;
else if(i==3) nodeToUpdate = n4;
//if any of the chunks sharing this node sends this as a ghost, then all of them have to
//so find out the set of chunks I need to send this as a ghost to
//collect info from each of the shared chunks, do a union of all these chunks
//send this updated list to everyone.
//if anyone needs to add or delete some ghosts, they will
int *chkl, numchkl=0;
CkVec<int> finalchkl;
theMod->fmUtil->findGhostSend(nodeToUpdate, chkl, numchkl);
for(int j=0; j<numchkl; j++) {
finalchkl.push_back(chkl[j]);
}
if(numchkl>0) delete[] chkl;
const IDXL_Rec *irec=theMesh->node.shared.getRec(nodeToUpdate);
int numchunks=0;
int *chunks1, *inds1;
if(irec) {
numchunks = irec->getShared();
chunks1 = new int[numchunks];
inds1 = new int[numchunks];
for(int j=0; j<numchunks; j++) {
chunks1[j] = irec->getChk(j);
inds1[j] = irec->getIdx(j);
}
}
for(int j=0; j<numchunks; j++) {
findgsMsg *fmsg = meshMod[chunks1[j]].findghostsend(index,inds1[j]);
if(fmsg->numchks>0) {
for(int k=0; k<fmsg->numchks; k++) {
bool shouldbeadded = true;
for(int l=0; l<finalchkl.size(); l++) {
if(fmsg->chunks[k]==finalchkl[l]) {
shouldbeadded = false;
break;
}
}
if(shouldbeadded) finalchkl.push_back(fmsg->chunks[k]);
}
}
delete fmsg;
}
int *finall, numfinall=finalchkl.size();
if(numfinall>0) finall = new int[numfinall];
for(int j=0; j<numfinall; j++) finall[j] = finalchkl[j];
finalchkl.free();
theMod->fmUtil->UpdateGhostSend(nodeToUpdate, finall, numfinall);
for(int j=0; j<numchunks; j++) {
verifyghostsendMsg *vmsg = new(numfinall)verifyghostsendMsg();
vmsg->fromChk = index;
vmsg->sharedIdx = inds1[j];
vmsg->numchks = numfinall;
for(int k=0; k<numfinall; k++) vmsg->chunks[k] = finall[k];
meshMod[chunks1[j]].updateghostsend(vmsg);
}
if(numfinall>0) delete[] finall;
if(numchunks>0) {
delete[] chunks1;
delete[] inds1;
}
}
//make sure that it always comes here, don't return with unlocking
return 1; //return newNode;
}