QuadraturePointsGroup.cpp

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#include "QuadraturePointsGroup.hpp"
#include "Exception.hpp"

template<unsigned DIM>
QuadraturePointsGroup<DIM>::QuadraturePointsGroup(AbstractTetrahedralMesh<DIM,DIM>& rMesh,
                                                  GaussianQuadratureRule<DIM>& rQuadRule)
{
    c_vector<double, DIM> unset;
    for (unsigned i=0; i<DIM; i++)
    {
        unset(i)=DOUBLE_UNSET;
    }
    mNumElements = rMesh.GetNumElements();
    mNumQuadPointsPerElement = rQuadRule.GetNumQuadPoints();
    data.resize(mNumElements*mNumQuadPointsPerElement, unset);

    // Loop over elements
    for (typename AbstractTetrahedralMesh<DIM, DIM>::ElementIterator iter = rMesh.GetElementIteratorBegin();
                  iter != rMesh.GetElementIteratorEnd();
                  ++iter)
    {
//        Element<DIM,DIM>& r_elem = *(rMesh.GetElement(elem_index));
        unsigned elem_index = iter->GetIndex();

        c_vector<double, DIM+1> linear_phi;
        for (unsigned quad_index=0; quad_index<rQuadRule.GetNumQuadPoints(); quad_index++)
        {
            const ChastePoint<DIM>& quadrature_point = rQuadRule.rGetQuadPoint(quad_index);

            LinearBasisFunction<DIM>::ComputeBasisFunctions(quadrature_point, linear_phi);

            // Interpolate to calculate quadrature point
            c_vector<double,DIM> physical_quad_point = zero_vector<double>(DIM);
            for (unsigned node_index=0; node_index<DIM+1; node_index++)
            {
                physical_quad_point += linear_phi(node_index)*(iter->GetNode(node_index))->rGetLocation();
            }

            // Save the quadrature point
            assert(elem_index<mNumElements);
            assert(quad_index<mNumQuadPointsPerElement);
            data[ elem_index*mNumQuadPointsPerElement + quad_index ] = physical_quad_point;
        }
    }
}

template<unsigned DIM>
c_vector<double,DIM>& QuadraturePointsGroup<DIM>::rGet(unsigned elementIndex, unsigned quadIndex)
{
    assert(elementIndex<mNumElements);
    assert(quadIndex<mNumQuadPointsPerElement);
    return data[ elementIndex*mNumQuadPointsPerElement + quadIndex ];
}

template<unsigned DIM>
c_vector<double,DIM>& QuadraturePointsGroup<DIM>::rGet(unsigned i)
{
    assert(i < mNumElements*mNumQuadPointsPerElement);
    return data[i];
}

template<unsigned DIM>
unsigned QuadraturePointsGroup<DIM>::GetNumElements() const
{
    return mNumElements;
}

template<unsigned DIM>
unsigned QuadraturePointsGroup<DIM>::GetNumQuadPointsPerElement() const
{
    return mNumQuadPointsPerElement;
}

template<unsigned DIM>
unsigned QuadraturePointsGroup<DIM>::Size() const
{
    return mNumElements*mNumQuadPointsPerElement;
}

// Explicit instantiation

template class QuadraturePointsGroup<1>;
template class QuadraturePointsGroup<2>;
template class QuadraturePointsGroup<3>;