HexRule8.h

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// SPDX-FileCopyrightText: Copyright (c) OpenGeoSys Community (opengeosys.org)
// SPDX-License-Identifier: BSD-3-Clause
 
#pragma once
 
#include "EdgeReturn.h"
#include "HexRule.h"
 
namespace MeshLib
{
class HexRule8 : public HexRule
{
public:
    static const unsigned n_all_nodes = 8u;

    static const CellType cell_type = CellType::HEX8;

    constexpr static const unsigned face_nodes[6][4] = {
        {0, 3, 2, 1},  // Face 0
        {0, 1, 5, 4},  // Face 1
        {1, 2, 6, 5},  // Face 2
        {2, 3, 7, 6},  // Face 3
        {3, 0, 4, 7},  // Face 4
        {4, 5, 6, 7}   // Face 5
    };

    constexpr static const unsigned edge_nodes[12][2] = {
        {0, 1},  // Edge 0
        {1, 2},  // Edge 1
        {2, 3},  // Edge 2
        {0, 3},  // Edge 3
        {4, 5},  // Edge 4
        {5, 6},  // Edge 5
        {6, 7},  // Edge 6
        {4, 7},  // Edge 7
        {0, 4},  // Edge 8
        {1, 5},  // Edge 9
        {2, 6},  // Edge 10
        {3, 7}   // Edge 11
    };

    using EdgeReturn = MeshLib::LinearEdgeReturn;

    static const Element* getFace(const Element* e, unsigned i);

    static unsigned identifyFace(Node const* const* element_nodes,
                                 Node const* nodes[3])
    {
        return CellRule::identifyFace<HexRule8>(element_nodes, nodes);
    }
}; /* class */
 
}  // namespace MeshLib