boundaryPatchMixin.hpp

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// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2023 NeoFOAM authors
#pragma once
 
#include "NeoFOAM/fields/fieldTypeDefs.hpp"
#include "NeoFOAM/fields/domainField.hpp"
 
#include "NeoFOAM/mesh/unstructured/unstructuredMesh.hpp"
 
namespace NeoFOAM::finiteVolume::cellCentred
{
 
class BoundaryPatchMixin
{
 
public:
 
    BoundaryPatchMixin() {}
 
    virtual ~BoundaryPatchMixin() = default;
 
    BoundaryPatchMixin(const UnstructuredMesh& mesh, size_t patchID)
        : patchID_(patchID), start_(static_cast<label>(mesh.boundaryMesh().offset()[patchID_])),
          end_(static_cast<label>(mesh.boundaryMesh().offset()[patchID_ + 1]))
    {}
 
    BoundaryPatchMixin(label start, label end, size_t patchID)
        : patchID_(patchID), start_(start), end_(end)
    {}
 
    label patchStart() const { return start_; };
 
    label patchEnd() const { return start_; };
 
    size_t patchSize() const { return static_cast<size_t>(end_ - start_); }
 
    size_t patchID() const { return patchID_; }
 
    std::pair<size_t, size_t> range() { return {start_, end_}; }
 
protected:
 
    size_t patchID_; 
    label start_;    
    label end_;      
};
}