MassMatrixAssembler.hpp

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#pragma once
 
#include <polyfem/assembler/ElementAssemblyValues.hpp>
#include <polyfem/assembler/AssemblyValsCache.hpp>
#include <polyfem/assembler/MatParams.hpp>
 
#include <Eigen/Sparse>
#include <vector>
#include <iostream>
#include <cmath>
#include <memory>
 
// mass matrix assembler
namespace polyfem::assembler
{
    class MassMatrixAssembler
    {
    public:
        void assemble_cross(
            const bool is_volume,
            const int size,
            const int n_from_basis,
            const std::vector<basis::ElementBases> &from_bases,
            const std::vector<basis::ElementBases> &from_gbases,
            const int n_to_basis,
            const std::vector<basis::ElementBases> &to_bases,
            const std::vector<basis::ElementBases> &to_gbases,
            const AssemblyValsCache &cache,
            StiffnessMatrix &mass) const;
    };
} // namespace polyfem::assembler