Function.hpp

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#pragma once
 
#include <wmtk/attribute//MeshAttributeHandle.hpp>
#include <wmtk/simplex/Simplex.hpp>
#include <Eigen/Core>
 
namespace wmtk::function {
 
class Function
{
public:
    Function(Mesh& mesh, const attribute::MeshAttributeHandle& handle);
    virtual ~Function() {}
 
    virtual double get_value(const simplex::Simplex& variable_simplex) const = 0;
 
    virtual Eigen::VectorXd get_gradient(const simplex::Simplex& variable_simplex) const = 0;
 
    virtual Eigen::MatrixXd get_hessian(const simplex::Simplex& variable_simplex) const = 0;
 
    inline Mesh& mesh() { return m_mesh; }
    inline const Mesh& mesh() const { return m_mesh; }
    inline PrimitiveType attribute_type() const { return m_handle.primitive_type(); };
    int64_t embedded_dimension() const;
    inline const attribute::MeshAttributeHandle& attribute_handle() const { return m_handle; }
    virtual std::vector<simplex::Simplex> domain(
        const simplex::Simplex& variable_simplex) const = 0;
 
 
private:
    Mesh& m_mesh;
    attribute::MeshAttributeHandle m_handle;
};
} // namespace wmtk::function