* and \a this->getMeshDimension() != 3.
* \throw If \a policy is not one of the four discussed above.
* \throw If the nodal connectivity of cells is not defined.
+ * \sa MEDCouplingUMesh::tetrahedrize
*/
DataArrayInt *MEDCouplingUMesh::simplexize(int policy) throw(INTERP_KERNEL::Exception)
{
*/
std::vector<DataArrayInt *> MEDCouplingUMesh::partitionBySpreadZone() const throw(INTERP_KERNEL::Exception)
{
- //#if 0
int nbOfCellsCur=getNumberOfCells();
std::vector<DataArrayInt *> ret;
if(nbOfCellsCur<=0)
for(std::vector< MEDCouplingAutoRefCountObjectPtr<DataArrayInt> >::iterator it=ret2.begin();it!=ret2.end();it++)
ret.push_back((*it).retn());
return ret;
- //#endif
-#if 0
- int nbOfCellsCur=getNumberOfCells();
- DataArrayInt *neigh=0,*neighI=0;
- computeNeighborsOfCells(neigh,neighI);
- MEDCouplingAutoRefCountObjectPtr<DataArrayInt> neighAuto(neigh),neighIAuto(neighI);
- MEDCouplingAutoRefCountObjectPtr<DataArrayInt> ids=DataArrayInt::New(); ids->alloc(nbOfCellsCur,1); ids->iota();
- std::vector<DataArrayInt *> ret;
- std::vector< MEDCouplingAutoRefCountObjectPtr<DataArrayInt> > ret2;
- while(nbOfCellsCur>0)
- {
- MEDCouplingAutoRefCountObjectPtr<DataArrayInt> tmp=MEDCouplingUMesh::ComputeSpreadZoneGradually(neighAuto,neighIAuto);
- MEDCouplingAutoRefCountObjectPtr<DataArrayInt> tmp3=tmp->buildComplement(nbOfCellsCur);
- MEDCouplingAutoRefCountObjectPtr<DataArrayInt> tmp2=ids->selectByTupleId(tmp->begin(),tmp->end());
- ret2.push_back(tmp2); ret.push_back(tmp2);
- nbOfCellsCur=tmp3->getNumberOfTuples();
- if(nbOfCellsCur>0)
- {
- ids=ids->selectByTupleId(tmp3->begin(),tmp3->end());
- MEDCouplingUMesh::ExtractFromIndexedArrays(tmp3->begin(),tmp3->end(),neighAuto,neighIAuto,neigh,neighI);
- neighAuto=neigh;
- neighIAuto=neighI;
- MEDCouplingAutoRefCountObjectPtr<DataArrayInt> renum=tmp3->invertArrayN2O2O2N(nbOfCellsCur+tmp->getNumberOfTuples());
- neighAuto->transformWithIndArr(renum->begin(),renum->end());
- }
- }
- for(std::vector<DataArrayInt *>::const_iterator it=ret.begin();it!=ret.end();it++)
- (*it)->incrRef();
- return ret;
-#endif
}
/*!
return ret.retn();
}
+/*!
+ * This method expects that \a this a 3D mesh (spaceDim=3 and meshDim=3) with all coordinates and connectivities set.
+ * All cells in \a this are expected to be linear 3D cells.
+ * This method will split **all** 3D cells in \a this into INTERP_KERNEL::NORM_TETRA4 cells and put them in the returned mesh.
+ * It leads to an increase to number of cells.
+ * This method contrary to MEDCouplingUMesh::simplexize can append coordinates in \a this to perform its work.
+ * The \a nbOfAdditionalPoints returned value informs about it. If > 0, the coordinates array in returned mesh will have \a nbOfAdditionalPoints
+ * more tuples (nodes) than in \a this. Anyway, all the nodes in \a this (with the same order) will be in the returned mesh.
+ *
+ * \param [in] policy - the policy of splitting that must be in (PLANAR_FACE_5, PLANAR_FACE_6, GENERAL_24, GENERAL_48). The policy will be used only for INTERP_KERNEL::NORM_HEXA8 cells.
+ * For all other cells, the splitting policy will be ignored.
+ * \param [out] nbOfAdditionalPoints - number of nodes added to \c this->_coords. If > 0 a new coordinates object will be constructed result of the aggregation of the old one and the new points added.
+ * \param [out] n2oCells - A new instance of DataArrayInt holding, for each new cell,
+ * an id of old cell producing it. The caller is to delete this array using
+ * decrRef() as it is no more needed.
+ * \return MEDCoupling1SGTUMesh * - the mesh containing only INTERP_KERNEL::NORM_TETRA4 cells.
+ *
+ * \throw If \a this is not a 3D mesh (spaceDim==3 and meshDim==3).
+ * \throw If \a this is not fully constituted with linear 3D cells.
+ * \sa MEDCouplingUMesh::simplexize
+ */
+MEDCoupling1SGTUMesh *MEDCouplingUMesh::tetrahedrize(int policy, DataArrayInt *& n2oCells, int& nbOfAdditionalPoints) const throw(INTERP_KERNEL::Exception)
+{
+ INTERP_KERNEL::SplittingPolicy pol((INTERP_KERNEL::SplittingPolicy)policy);
+ checkConnectivityFullyDefined();
+ if(getMeshDimension()!=3 || getSpaceDimension()!=3)
+ throw INTERP_KERNEL::Exception("MEDCouplingUMesh::tetrahedrize : only available for mesh with meshdim == 3 and spacedim == 3 !");
+ int nbOfCells(getNumberOfCells()),nbNodes(getNumberOfNodes());
+ MEDCouplingAutoRefCountObjectPtr<MEDCoupling1SGTUMesh> ret0(MEDCoupling1SGTUMesh::New(getName().c_str(),INTERP_KERNEL::NORM_TETRA4));
+ MEDCouplingAutoRefCountObjectPtr<DataArrayInt> ret(DataArrayInt::New()); ret->alloc(nbOfCells,1);
+ int *retPt(ret->getPointer());
+ MEDCouplingAutoRefCountObjectPtr<DataArrayInt> newConn(DataArrayInt::New()); newConn->alloc(0,1);
+ MEDCouplingAutoRefCountObjectPtr<DataArrayDouble> addPts(DataArrayDouble::New()); addPts->alloc(0,1);
+ const int *oldc(_nodal_connec->begin());
+ const int *oldci(_nodal_connec_index->begin());
+ const double *coords(_coords->begin());
+ for(int i=0;i<nbOfCells;i++,oldci++,retPt++)
+ {
+ std::vector<int> a; std::vector<double> b;
+ INTERP_KERNEL::SplitIntoTetras(pol,(INTERP_KERNEL::NormalizedCellType)oldc[oldci[0]],oldc+oldci[0]+1,oldc+oldci[1],coords,a,b);
+ std::size_t nbOfTet(a.size()/4); *retPt=(int)nbOfTet;
+ const int *aa(&a[0]);
+ if(!b.empty())
+ {
+ for(std::vector<int>::iterator it=a.begin();it!=a.end();it++)
+ if(*it<0)
+ *it=(-(*(it))-1+nbNodes);
+ addPts->insertAtTheEnd(b.begin(),b.end());
+ nbNodes+=(int)b.size()/3;
+ }
+ for(std::size_t j=0;j<nbOfTet;j++,aa+=4)
+ newConn->insertAtTheEnd(aa,aa+4);
+ }
+ if(!addPts->empty())
+ {
+ addPts->rearrange(3);
+ nbOfAdditionalPoints=addPts->getNumberOfTuples();
+ addPts=DataArrayDouble::Aggregate(getCoords(),addPts);
+ ret0->setCoords(addPts);
+ }
+ else
+ {
+ nbOfAdditionalPoints=0;
+ ret0->setCoords(getCoords());
+ }
+ ret0->setNodalConnectivity(newConn);
+ //
+ ret->computeOffsets2();
+ n2oCells=ret->buildExplicitArrOfSliceOnScaledArr(0,nbOfCells,1);
+ return ret0.retn();
+}
+
MEDCouplingUMeshCellIterator::MEDCouplingUMeshCellIterator(MEDCouplingUMesh *mesh):_mesh(mesh),_cell(new MEDCouplingUMeshCell(mesh)),
_own_cell(true),_cell_id(-1),_nb_cell(0)
{
