TetRule4.cpp

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#include "TetRule4.h"
 
#include <array>
 
#include "BaseLib/Logging.h"
#include "Line.h"
#include "MathLib/GeometricBasics.h"
#include "MeshLib/Node.h"
#include "Tri.h"
 
namespace MeshLib
{
const unsigned TetRule4::face_nodes[4][3] = {
    {0, 2, 1},  // Face 0
    {0, 1, 3},  // Face 1
    {1, 2, 3},  // Face 2
    {2, 0, 3}   // Face 3
};
 
const unsigned TetRule4::edge_nodes[6][2] = {
    {0, 1},  // Edge 0
    {1, 2},  // Edge 1
    {0, 2},  // Edge 2
    {0, 3},  // Edge 3
    {1, 3},  // Edge 4
    {2, 3}   // Edge 5
};
 
const Element* TetRule4::getFace(const Element* e, unsigned i)
{
    if (i < n_faces)
    {
        std::array<Node*, 3> nodes{};
        for (unsigned j = 0; j < 3; j++)
        {
            nodes[j] = const_cast<Node*>(e->getNode(face_nodes[i][j]));
        }
        return new Tri(nodes, e->getID());
    }
    ERR("Error in MeshLib::Element::getFace() - Index {:d} does not exist.", i);
    return nullptr;
}
 
double TetRule4::computeVolume(Node const* const* _nodes)
{
    return MathLib::calcTetrahedronVolume(*_nodes[0], *_nodes[1], *_nodes[2],
                                          *_nodes[3]);
}
 
bool TetRule4::isPntInElement(Node const* const* nodes,
                              MathLib::Point3d const& pnt, double eps)
{
    return MathLib::isPointInTetrahedron(pnt, *nodes[0], *nodes[1], *nodes[2],
                                         *nodes[3], eps);
}
 
unsigned TetRule4::identifyFace(Node const* const* _nodes, Node const* nodes[3])
{
    for (unsigned i = 0; i < 4; i++)
    {
        unsigned flag(0);
        for (unsigned j = 0; j < 3; j++)
        {
            for (unsigned k = 0; k < 3; k++)
            {
                if (_nodes[face_nodes[i][j]] == nodes[k])
                {
                    flag++;
                }
            }
        }
        if (flag == 3)
        {
            return i;
        }
    }
    return std::numeric_limits<unsigned>::max();
}
 
ElementErrorCode TetRule4::validate(const Element* e)
{
    ElementErrorCode error_code;
    error_code[ElementErrorFlag::ZeroVolume] = hasZeroVolume(*e);
    error_code[ElementErrorFlag::NodeOrder] = !e->testElementNodeOrder();
    return error_code;
}
 
}  // end namespace MeshLib