AbstractTetrahedralElement.hpp

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*/


#ifndef _ABSTRACTTETRAHEDRALELEMENT_HPP_
#define _ABSTRACTTETRAHEDRALELEMENT_HPP_

#include <vector>

#include "UblasMatrixInclude.hpp"
#include "UblasVectorInclude.hpp"

#include "AbstractElement.hpp"
#include "Node.hpp"

template <unsigned ELEMENT_DIM, unsigned SPACE_DIM>
class AbstractTetrahedralElement : public AbstractElement<ELEMENT_DIM,SPACE_DIM>
{
protected:

    void RefreshJacobian(c_matrix<double, SPACE_DIM, ELEMENT_DIM>& rJacobian);

public:

    AbstractTetrahedralElement(unsigned index, const std::vector<Node<SPACE_DIM>*>& rNodes);

    AbstractTetrahedralElement(unsigned index=INDEX_IS_NOT_USED);

    virtual ~AbstractTetrahedralElement()
    {}

    c_vector<double, SPACE_DIM> CalculateCentroid() const;

    void CalculateJacobian(c_matrix<double, SPACE_DIM, ELEMENT_DIM>& rJacobian,
                           double& rJacobianDeterminant);

    void CalculateWeightedDirection(c_vector<double, SPACE_DIM>& rWeightedDirection, double& rJacobianDeterminant);

    c_vector<double, SPACE_DIM> CalculateNormal();

    void CalculateInverseJacobian(c_matrix<double, SPACE_DIM, ELEMENT_DIM>& rJacobian,
                                  double& rJacobianDeterminant,
                                  c_matrix<double, ELEMENT_DIM, SPACE_DIM>& rInverseJacobian);

    double GetVolume(double determinant) const;

    void GetStiffnessMatrixGlobalIndices(unsigned problemDim, unsigned* pIndices) const;
};

//                  Specialization for 0d elements                  //

template<unsigned SPACE_DIM>
class AbstractTetrahedralElement<0, SPACE_DIM> : public AbstractElement<0,SPACE_DIM>
{
public:

    AbstractTetrahedralElement(unsigned index, const std::vector<Node<SPACE_DIM>*>& rNodes);

    AbstractTetrahedralElement(unsigned index=INDEX_IS_NOT_USED);

    virtual ~AbstractTetrahedralElement()
    {}

    c_vector<double, SPACE_DIM> CalculateCentroid() const;

    void CalculateWeightedDirection(c_vector<double, SPACE_DIM>& rWeightedDirection, double& rJacobianDeterminant);

    c_vector<double, SPACE_DIM> CalculateNormal();

    void GetStiffnessMatrixGlobalIndices(unsigned problemDim, unsigned* pIndices) const;
};

#endif //_ABSTRACTTETRAHEDRALELEMENT_HPP_