Method laplaceMatrix

core/src/geometry.cpp:264–268

* Builds the sparse POSITIVE DEFINITE Laplace matrix. Do this by building the negative semidefinite Laplace matrix, * multiplying by -1, and shifting the diagonal elements by a small constant (e.g. 1e-8). * * Input: * Returns: Sparse positive definite Laplace matrix for the mesh. */

 * Returns: Sparse positive definite Laplace matrix for the mesh.
 */
SparseMatrix<double> VertexPositionGeometry::laplaceMatrix() const {

    // TODO
    return identityMatrix<double>(1); // placeholder
}

/*
 * Builds the sparse diagonal mass matrix containing the barycentric dual area of each vertex.