void makeBoundaryMatrix (Ref<MatrixXd> boundaryMatrix,
const int M,
const int N,
const double h,
const double * viscosityData) {
#ifdef DEBUG
cout << "<Creating " << 3 * M * N - M - N << "x" << 2 * M + 2 * N << " BoundaryMatrix>" << endl;
#endif
boundaryMatrix = MatrixXd::Zero (3 * M * N - M - N, 2 * M + 2 * N);
makeBCLaplacianXBlock (boundaryMatrix.block (0, 0, M * (N - 1), 2 * M), M, N, h, viscosityData);
makeBCLaplacianYBlock (boundaryMatrix.block (M * (N - 1), 2 * M, (M - 1) * N, 2 * N), M, N, h, viscosityData);
makeBCDivXBlock (boundaryMatrix.block (2 * M * N - M - N, 0, M * N, 2 * M), M, N, h);
makeBCDivYBlock (boundaryMatrix.block (2 * M * N - M - N, 2 * M, M * N, 2 * N), M, N, h);
}
void makeBoundaryMatrix (SparseMatrix<double>& boundaryMatrix,
const int M,
const int N,
const double h,
const double * viscosityData) {
#ifdef DEBUG
cout << "<Creating " << 3 * M * N - M - N << "x" << 2 * M + 2 * N << " BoundaryMatrix>" << endl;
#endif
vector<Triplet<double> > tripletList;
makeBCLaplacianXBlock (tripletList, 0, 0, M, N, h, viscosityData);
makeBCLaplacianYBlock (tripletList, M * (N - 1), 2 * M, M, N, h, viscosityData);
makeBCDivXBlock (tripletList, 2 * M * N - M - N, 0, M, N, h);
makeBCDivYBlock (tripletList, 2 * M * N - M - N, 2 * M, M, N, h);
boundaryMatrix.setFromTriplets (tripletList.begin(), tripletList.end());
#ifdef DEBUG
cout << endl;
#endif
}
