unstructuredMesh.hpp

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// SPDX-FileCopyrightText: 2023 - 2026 NeoN authors
//
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include "Kokkos_Sort.hpp"
 
#include "NeoN/core/dictionary.hpp"
#include "NeoN/core/parallelAlgorithms.hpp"
#include "NeoN/core/vector/vectorTypeDefs.hpp"
#include "NeoN/mesh/unstructured/boundaryMesh.hpp"
 
namespace NeoN
{
 
class UnstructuredMesh
{
public:
 
    UnstructuredMesh(
        Executor exec,
        vectorVector points,
        scalarVector cellVolumes,
        vectorVector cellCenters,
        vectorVector faceNormals,
        vectorVector faceCenters,
        scalarVector faceAreas,
        labelVector faceOwners,
        labelVector faceNeighbors,
        BoundaryMesh boundaryMesh
    );
 
    UnstructuredMesh(
        vectorVector points,
        scalarVector cellVolumes,
        vectorVector cellCenters,
        vectorVector faceNormals,
        vectorVector faceCenters,
        scalarVector faceAreas,
        labelVector faceOwners,
        labelVector faceNeighbors,
        BoundaryMesh boundaryMesh
    );
 
    const vectorVector& points() const;
    vectorVector& points();
 
    const scalarVector& cellVolumes() const;
    scalarVector& cellVolumes();
 
    const vectorVector& cellCenters() const;
    vectorVector& cellCenters();
 
    const vectorVector& faceCenters() const;
    vectorVector& faceCenters();
 
    const vectorVector& faceNormals() const;
    vectorVector& faceNormals();
 
    const scalarVector& faceAreas() const;
    scalarVector& faceAreas();
 
    const labelVector& faceOwners() const;
    labelVector& faceOwners();
 
    const labelVector& faceNeighbors() const;
    labelVector& faceNeighbors();
 
    localIdx nCells() const;
 
    localIdx nInternalFaces() const;
 
    localIdx nBoundaryFaces() const;
 
    localIdx nTotalFaces() const;
 
    localIdx nBoundaries() const;
 
    localIdx nProcBoundaryFaces() const;
 
    localIdx globalOffset() const;
 
    const BoundaryMesh& boundaryMesh() const;
 
    BoundaryMesh& boundaryMesh();
 
    Dictionary& stencilDB() const;
 
    const Executor& exec() const;
 
private:
 
    const Executor exec_;
 
    vectorVector points_;
 
    scalarVector cellVolumes_;
 
    vectorVector cellCenters_;
 
    vectorVector faceNormals_;
 
    vectorVector faceCenters_;
 
    scalarVector faceAreas_;
 
    labelVector faceOwners_;
 
    labelVector faceNeighbors_;
 
    localIdx nCells_;
 
    localIdx nInternalFaces_;
 
    BoundaryMesh boundaryMesh_;
 
    //
    localIdx globalOffset_;
 
    mutable Dictionary stencilDataBase_;
};
 
UnstructuredMesh createSingleCellMesh(const Executor exec);
 
UnstructuredMesh create1DUniformMesh(const Executor exec, const localIdx nCells, scalar lx = 1.0);
 
UnstructuredMesh create2DUniformMesh(
    const Executor exec, localIdx nx, localIdx ny, scalar lx = 1.0, scalar ly = 1.0
);
 
UnstructuredMesh create3DUniformMesh(
    const Executor exec,
    localIdx nx,
    localIdx ny,
    localIdx nz,
    scalar lx = 1.0,
    scalar ly = 1.0,
    scalar lz = 1.0
);
 
 
#ifdef NF_WITH_MPI_SUPPORT
UnstructuredMesh create1DUniformMeshPart(const Executor exec, const localIdx nCells);
 
UnstructuredMesh create2DUniformMeshPart(
    const Executor exec, const localIdx nCells, const localIdx totalRanks, const localIdx rank
);
 
UnstructuredMesh create2DUniformMeshPartX(
    const Executor exec, const localIdx nCells, const localIdx totalRanks, const localIdx rank
);
#endif
 
} // namespace NeoN