* \b WARNING this method do the assumption that connectivity lies on the coordinates set.
* For speed reasons no check of this will be done. This method calls MEDCouplingUMesh::buildDescendingConnectivity to compute the result.
* This method lists cell by cell in \b this which are its neighbors. To compute the result only connectivities are considered.
- * The a cell with id 'cellId' its neighbors are neighbors[neighborsIndx[cellId]:neighborsIndx[cellId+1]].
+ * The neighbor cells of cell having id 'cellId' are neighbors[neighborsIndx[cellId]:neighborsIndx[cellId+1]].
*
* \param [out] neighbors is an array storing all the neighbors of all cells in \b this. This array is newly allocated and should be dealt by the caller. \b neighborsIndx 2nd output
* parameter allows to select the right part in this array. The number of tuples is equal to the last values in \b neighborsIndx.
* excluding a set of meshdim-1 cells in input descending connectivity.
* Typically \b desc, \b descIndx, \b revDesc and \b revDescIndx input params are the result of MEDCouplingUMesh::buildDescendingConnectivity.
* This method lists cell by cell in \b this which are its neighbors. To compute the result only connectivities are considered.
- * The a cell with id 'cellId' its neighbors are neighbors[neighborsIndx[cellId]:neighborsIndx[cellId+1]].
+ * The neighbor cells of cell having id 'cellId' are neighbors[neighborsIndx[cellId]:neighborsIndx[cellId+1]].
*
* \param [in] desc descending connectivity array.
* \param [in] descIndx descending connectivity index array used to walk through \b desc.
neighborsIndx=out1.retn();
}
+/*!
+ * \b WARNING this method do the assumption that connectivity lies on the coordinates set.
+ * For speed reasons no check of this will be done. This method calls MEDCouplingUMesh::buildDescendingConnectivity to compute the result.
+ * This method lists node by node in \b this which are its neighbors. To compute the result only connectivities are considered.
+ * The neighbor nodes of node having id 'nodeId' are neighbors[neighborsIndx[cellId]:neighborsIndx[cellId+1]].
+ *
+ * \param [out] neighbors is an array storing all the neighbors of all nodes in \b this. This array is newly allocated and should be dealt by the caller. \b neighborsIndx 2nd output
+ * parameter allows to select the right part in this array. The number of tuples is equal to the last values in \b neighborsIndx.
+ * \param [out] neighborsIndx is an array of size this->getNumberOfCells()+1 newly allocated and should be dealt by the caller. This arrays allow to use the first output parameter \b neighbors.
+ */
+void MEDCouplingUMesh::computeNeighborsOfNodes(DataArrayInt *&neighbors, DataArrayInt *&neighborsIdx) const
+{
+ checkFullyDefined();
+ int mdim(getMeshDimension()),nbNodes(getNumberOfNodes());
+ MEDCouplingAutoRefCountObjectPtr<DataArrayInt> desc(DataArrayInt::New()),descIndx(DataArrayInt::New()),revDesc(DataArrayInt::New()),revDescIndx(DataArrayInt::New());
+ MEDCouplingAutoRefCountObjectPtr<MEDCouplingUMesh> mesh1D;
+ switch(mdim)
+ {
+ case 3:
+ {
+ mesh1D=explode3DMeshTo1D(desc,descIndx,revDesc,revDescIndx);
+ break;
+ }
+ case 2:
+ {
+ mesh1D=buildDescendingConnectivity(desc,descIndx,revDesc,revDescIndx);
+ break;
+ }
+ case 1:
+ {
+ mesh1D=const_cast<MEDCouplingUMesh *>(this);
+ mesh1D->incrRef();
+ break;
+ }
+ default:
+ {
+ throw INTERP_KERNEL::Exception("MEDCouplingUMesh::computeNeighborsOfNodes : Mesh dimension supported are [3,2,1] !");
+ }
+ }
+ desc=DataArrayInt::New(); descIndx=DataArrayInt::New(); revDesc=0; revDescIndx=0;
+ mesh1D->getReverseNodalConnectivity(desc,descIndx);
+ MEDCouplingAutoRefCountObjectPtr<DataArrayInt> ret0(DataArrayInt::New());
+ ret0->alloc(desc->getNumberOfTuples(),1);
+ int *r0Pt(ret0->getPointer());
+ const int *c1DPtr(mesh1D->getNodalConnectivity()->begin()),*rn(desc->begin()),*rni(descIndx->begin());
+ for(int i=0;i<nbNodes;i++,rni++)
+ {
+ for(const int *oneDCellIt=rn+rni[0];oneDCellIt!=rn+rni[1];oneDCellIt++)
+ *r0Pt++=c1DPtr[3*(*oneDCellIt)+1]==i?c1DPtr[3*(*oneDCellIt)+2]:c1DPtr[3*(*oneDCellIt)+1];
+ }
+ neighbors=ret0.retn();
+ neighborsIdx=descIndx.retn();
+}
+
/// @cond INTERNAL
/*!
self.assertTrue(DataArrayInt.checkAndPreparePermutation(a).isEqual(DataArrayInt([])))
pass
+ def testSwig2ComputeNeighborsOfNodes1(self):
+ arrX=DataArrayDouble(3) ; arrX.iota()
+ arrY=DataArrayDouble(4) ; arrY.iota()
+ arrZ=DataArrayDouble(5) ; arrZ.iota()
+ m=MEDCouplingCMesh() ; m.setCoords(arrX,arrY,arrZ) ; m=m.buildUnstructured()
+ # 3D
+ a,b=m.computeNeighborsOfNodes()
+ self.assertTrue(a.isEqual(DataArrayInt([1,3,12,0,4,13,2,1,5,14,0,4,15,6,3,1,16,5,7,4,2,17,8,3,7,18,9,6,4,19,8,10,7,5,20,11,6,10,21,9,7,22,11,10,8,23,13,15,0,24,12,16,1,14,25,13,17,2,26,12,16,3,18,27,15,13,4,17,19,28,16,14,5,20,29,15,19,6,21,30,18,16,7,20,22,31,19,17,8,23,32,18,22,9,33,21,19,10,23,34,22,20,11,35,25,27,12,36,24,28,13,26,37,25,29,14,38,24,28,15,30,39,27,25,16,29,31,40,28,26,17,32,41,27,31,18,33,42,30,28,19,32,34,43,31,29,20,35,44,30,34,21,45,33,31,22,35,46,34,32,23,47,37,39,24,48,36,40,25,38,49,37,41,26,50,36,40,27,42,51,39,37,28,41,43,52,40,38,29,44,53,39,43,30,45,54,42,40,31,44,46,55,43,41,32,47,56,42,46,33,57,45,43,34,47,58,46,44,35,59,49,51,36,48,52,37,50,49,53,38,48,52,39,54,51,49,40,53,55,52,50,41,56,51,55,42,57,54,52,43,56,58,55,53,44,59,54,58,45,57,55,46,59,58,56,47])))
+ self.assertTrue(b.isEqual(DataArrayInt([0,3,7,10,14,19,23,27,32,36,39,43,46,50,55,59,64,70,75,80,86,91,95,100,104,108,113,117,122,128,133,138,144,149,153,158,162,166,171,175,180,186,191,196,202,207,211,216,220,223,227,230,234,239,243,247,252,256,259,263,266])))
+ # 2D
+ m=MEDCouplingCMesh() ; m.setCoords(arrX,arrY) ; m=m.buildUnstructured()
+ a,b=m.computeNeighborsOfNodes()
+ self.assertTrue(a.isEqual(DataArrayInt([1,3,0,4,2,1,5,0,4,6,3,1,5,7,4,2,8,3,7,9,6,4,8,10,7,5,11,6,10,9,7,11,10,8])))
+ self.assertTrue(b.isEqual(DataArrayInt([0,2,5,7,10,14,17,20,24,27,29,32,34])))
+ # 1D
+ m=m.buildDescendingConnectivity()[0]
+ a,b=m.computeNeighborsOfNodes()
+ self.assertTrue(a.isEqual(DataArrayInt([1,3,0,4,2,1,5,0,4,6,3,1,5,7,4,2,8,3,7,9,6,4,8,10,7,5,11,6,10,9,7,11,10,8])))
+ self.assertTrue(b.isEqual(DataArrayInt([0,2,5,7,10,14,17,20,24,27,29,32,34])))
+ pass
+
def setUp(self):
pass
pass
