virtual int setElemMatrix(int elemBlockID, int elemID, int numNodes, const int *nodeNumbers, const int *numDofPerNode, const int *dof_ids, const double *const *coefs)=0
static int sumInElemMatrix(FiniteElementData *mat, int elemBlockID, int elemID, int numNodes, const int *nodeNumbers, const int *dofPerNode, const int *dof_ids, const double *const *coefs)