C++ TPZAutoPointer::NElements方法代碼示例

void RefinamentoUniforme(TPZAutoPointer<TPZGeoMesh> gmesh, int nref,TPZVec<int> dims)
{
    
    int ir, iel, k;
    int nel=0, dim=0;
    int ndims = dims.size();
	for(ir = 0; ir < nref; ir++ )
    {
		TPZVec<TPZGeoEl *> filhos;
        nel = gmesh->NElements();
        
		for (iel = 0; iel < nel; iel++ )
        {
			TPZGeoEl * gel = gmesh->ElementVec()[iel];
            if(!gel) DebugStop();
            
            dim = gel->Dimension();
            
            for(k = 0; k<ndims; k++)
            {
                if(dim == dims[k])
                {
                    gel->Divide (filhos);
                    break;
                }
            }
		}
	}
    
}

void RefinamentoSingular(TPZAutoPointer<TPZGeoMesh> gmesh,int nref)
{
    int64_t nnodes = gmesh->NNodes();
    int64_t in;
    for (in=0; in<nnodes; in++) {
        TPZGeoNode *gno = &gmesh->NodeVec()[in];
        if (abs(gno->Coord(0))< 1.e-6 && abs(gno->Coord(1)) < 1.e-6) {
            break;
        }
    }
    if (in == nnodes) {
        DebugStop();
    }
    TPZGeoElSide gelside;
    int64_t nelem = gmesh->NElements();
    for (int64_t el = 0; el<nelem; el++) {
        TPZGeoEl *gel = gmesh->ElementVec()[el];
        int ncorner = gel->NCornerNodes();
        for (int ic=0; ic<ncorner; ic++) {
            int64_t nodeindex = gel->NodeIndex(ic);
            if (nodeindex == in) {
                gelside = TPZGeoElSide(gel, ic);
                break;
            }
        }
        if (gelside.Element()) {
            break;
        }
    }
    if (!gelside.Element()) {
        DebugStop();
    }
    for (int iref = 0; iref <nref; iref++) {
        TPZStack<TPZGeoElSide> gelstack;
        gelstack.Push(gelside);
        TPZGeoElSide neighbour = gelside.Neighbour();
        while (neighbour != gelside) {
            gelstack.Push(neighbour);
            neighbour = neighbour.Neighbour();
        }
        int64_t nstack = gelstack.size();
        for (int64_t ist=0; ist < nstack; ist++) {
            if (!gelstack[ist].Element()->HasSubElement()) {
                TPZVec<TPZGeoEl *> subel;
                gelstack[ist].Element()->Divide(subel);
            }
        }
    }
}

void GetElIndexCoarseMesh(TPZAutoPointer<TPZGeoMesh>  gmesh, std::set<int64_t> &coarseindex)
{
    int nel = gmesh->NElements();
    int iel;
    int hassubel=0;
    int dim = gmesh->Dimension();
    int eldim;
    for(iel = 0; iel<nel; iel++)
    {
        TPZGeoEl * gel = gmesh->ElementVec()[iel];
        if(!gel) DebugStop();
        
        hassubel = gel->HasSubElement();
        eldim = gel->Dimension();
        if(!hassubel && eldim ==dim)
        {
            coarseindex.insert(gel->Index());
        }
    }
    
}

int SubStructure(TPZAutoPointer<TPZCompMesh> cmesh, REAL height)
{
	int nelem = cmesh->NElements();
	TPZManVector<int> subindex(nelem,-1);
	int iel;
	int nsub = 0;
	for (iel=0; iel<nelem; iel++) 
	{
		TPZCompEl *cel = cmesh->ElementVec()[iel];
		if (!cel) {
			continue;
		}
		TPZGeoEl *gel = cel->Reference();
		if (!gel) {
			continue;
		}
		int nsides = gel->NSides();
		TPZManVector<REAL> center(gel->Dimension(),0.), xco(3,0.);
		gel->CenterPoint(nsides-1,center);
		gel->X(center,xco);
		REAL z = xco[2];
		int floor = (int) z/height;
		nsub = (floor+1) > nsub ? (floor+1) : nsub;
		subindex[iel] = floor;
	}
	
#ifdef DEBUG 
	{
		TPZGeoMesh *gmesh = cmesh->Reference();
		int nelgeo = gmesh->NElements();
		TPZVec<int> domaincolor(nelgeo,-999);
		int cel;
		int nel = cmesh->NElements();
		for (cel=0; cel<nel; cel++) {
			TPZCompEl *compel = cmesh->ElementVec()[cel];
			if(!compel) continue;
			TPZGeoEl *gel = compel->Reference();
			if (!gel) {
				continue;
			}
			domaincolor[gel->Index()] = subindex[cel];
		}
		ofstream vtkfile("partition.vtk");
		TPZVTKGeoMesh::PrintGMeshVTK(gmesh, vtkfile, domaincolor);
	}
#endif
	
	int isub;
	TPZManVector<TPZSubCompMesh *> submeshes(nsub,0);
	for (isub=0; isub<nsub; isub++) 
	{
		int index;
		std::cout << '^'; std::cout.flush();
		submeshes[isub] = new TPZSubCompMesh(cmesh,index);
		
		if (index < subindex.NElements()) 
		{
			subindex[index] = -1;
		}
	}
	for (iel=0; iel<nelem; iel++) 
	{
		int domindex = subindex[iel];
		if (domindex >= 0) 
		{
			TPZCompEl *cel = cmesh->ElementVec()[iel];
			if (!cel) 
			{
				continue;
			}
			submeshes[domindex]->TransferElement(cmesh.operator->(),iel);
		}
	}
	cmesh->ComputeNodElCon();
	for (isub=0; isub<nsub; isub++) 
	{
		submeshes[isub]->MakeAllInternal();
		std::cout << '*'; std::cout.flush();
	}
	
	cmesh->ComputeNodElCon();
	cmesh->CleanUpUnconnectedNodes();
	return nsub;
}