LocalNeighborsSumFunction.hpp

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#pragma once
 
#include "Function.hpp"
 
namespace wmtk::function {
 
class PerSimplexFunction;
 
class LocalNeighborsSumFunction : public Function
{
public:
    LocalNeighborsSumFunction(
        Mesh& mesh,
        const attribute::MeshAttributeHandle& handle,
        PerSimplexFunction& function);
    double get_value(const simplex::Simplex& variable_simplex) const override;
 
    Eigen::VectorXd get_gradient(const simplex::Simplex& variable_simplex) const override;
 
    // TODO: should differentiable function be required to be twice differentiable?
    Eigen::MatrixXd get_hessian(const simplex::Simplex& variable_simplex) const override;
 
    std::vector<simplex::Simplex> domain(const simplex::Simplex& variable_simplex) const override;
 
private:
    PerSimplexFunction& m_function;
    PrimitiveType m_domain_simplex_type;
};
} // namespace wmtk::function