ddtOperator.hpp

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// SPDX-FileCopyrightText: 2023 - 2025 NeoN authors
//
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include "NeoN/core/vector/vector.hpp"
#include "NeoN/core/executor/executor.hpp"
#include "NeoN/core/input.hpp"
#include "NeoN/dsl/operator.hpp"
#include "NeoN/linearAlgebra/linearSystem.hpp"
#include "NeoN/linearAlgebra/sparsityPattern.hpp"
#include "NeoN/finiteVolume/cellCentred/fields/volumeField.hpp"
 
namespace NeoN::finiteVolume::cellCentred
{
 
template<typename ValueType>
class DdtOperator : public dsl::OperatorMixin<VolumeField<ValueType>>
{
 
public:
 
    using VectorValueType = ValueType;
 
    DdtOperator(dsl::Operator::Type termType, VolumeField<ValueType>& field);
 
    ~DdtOperator();
 
    void explicitOperation(Vector<ValueType>& source, scalar, scalar dt) const;
 
    void implicitOperation(la::LinearSystem<ValueType, localIdx>& ls, scalar, scalar dt) const;
 
    void read(const Input&) {}
 
    const la::SparsityPattern& getSparsityPattern() const { return sparsityPattern_; }
 
    std::string getName() const { return "DdtOperator"; }
 
private:
 
    // NOTE ddtOperator does not have a FactoryClass
    const la::SparsityPattern& sparsityPattern_;
};
 
 
} // namespace NeoN