volumeBoundaryFactory.hpp

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// SPDX-FileCopyrightText: 2023 - 2025 NeoN authors
//
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include "NeoN/core/primitives/label.hpp"
#include "NeoN/core/dictionary.hpp"
#include "NeoN/core/runtimeSelectionFactory.hpp"
#include "NeoN/fields/field.hpp"
#include "NeoN/finiteVolume/cellCentred/boundary/boundaryPatchMixin.hpp"
#include "NeoN/mesh/unstructured/unstructuredMesh.hpp"
 
namespace NeoN::finiteVolume::cellCentred
{
 
/* collects attributes of a boundary for simple queries
 *
 */
struct BoundaryAttributes
{
    bool assignable; 
    // bool fixesValue;
};
 
template<typename ValueType>
class VolumeBoundaryFactory :
    public NeoN::RuntimeSelectionFactory<
        VolumeBoundaryFactory<ValueType>,
        Parameters<const UnstructuredMesh&, const Dictionary&, localIdx>>,
    public BoundaryPatchMixin
{
public:
 
    static std::string name() { return "VolumeBoundaryFactory"; }
 
    VolumeBoundaryFactory(
        const UnstructuredMesh& mesh,
        [[maybe_unused]] const Dictionary& dict,
        localIdx patchID,
        BoundaryAttributes attributes
    )
        : BoundaryPatchMixin(mesh, patchID), attributes_(attributes) {};
 
    virtual ~VolumeBoundaryFactory() = default;
 
    virtual void correctBoundaryCondition(Field<ValueType>& domainVector) = 0;
 
    virtual std::unique_ptr<VolumeBoundaryFactory> clone() const = 0;
 
    BoundaryAttributes attributes() const { return attributes_; }
 
protected:
 
    BoundaryAttributes attributes_; 
};
 
 
template<typename ValueType>
class VolumeBoundary : public BoundaryPatchMixin
{
public:
 
    VolumeBoundary(const UnstructuredMesh& mesh, const Dictionary& dict, localIdx patchID)
        : BoundaryPatchMixin(
            mesh.boundaryMesh().offset()[static_cast<size_t>(patchID)],
            mesh.boundaryMesh().offset()[static_cast<size_t>(patchID) + 1],
            patchID
        ),
          boundaryCorrectionStrategy_(VolumeBoundaryFactory<ValueType>::create(
              dict.get<std::string>("type"), mesh, dict, patchID
          ))
    {}
 
    VolumeBoundary(const VolumeBoundary& other)
        : BoundaryPatchMixin(other),
          boundaryCorrectionStrategy_(other.boundaryCorrectionStrategy_->clone())
    {}
 
    virtual void correctBoundaryCondition(Field<ValueType>& domainVector)
    {
        boundaryCorrectionStrategy_->correctBoundaryCondition(domainVector);
    }
 
    const BoundaryAttributes attributes() const
    {
        return boundaryCorrectionStrategy_->attributes();
    }
 
private:
 
    // NOTE needs full namespace to be not ambiguous
    std::unique_ptr<NeoN::finiteVolume::cellCentred::VolumeBoundaryFactory<ValueType>>
        boundaryCorrectionStrategy_;
};
 
}