cl_EF_TRI3.hpp

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/*
 * BELFEM -- The Berkeley Lab Finite Element Framework
 * Copyright (c) 2026, The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory (subject to receipt of any required
 * approvals from the U.S. Dept. of Energy).  All rights reserved.
 *
 * Developers: Christian Messe, Gregory Giard
 *
 * See the top-level LICENSE file for the complete license and disclaimer.
 */
 
#ifndef BELFEM_CL_EF_TRI3_HPP
#define BELFEM_CL_EF_TRI3_HPP
 
#include "nedelec/cl_EF_EdgeFunction.hpp"
#include "cl_FEM_Element.hpp"
 
namespace belfem
{
    namespace fem
    {
        class Element;
 
        class EF_TRI3 : public EdgeFunction
        {
            // edge directions
            real mS[ 3 ];
 
            // derivatives
            real mNablaXi[ 2 ];
            real mNablaEta[ 2 ];
            real mNablaZeta[ 2 ];
 
            // coefficients for shape function
            Matrix< real > mG ;
            Matrix< real > mH ;
 
//------------------------------------------------------------------------------
        public:
//------------------------------------------------------------------------------

            EF_TRI3();
 
//------------------------------------------------------------------------------

            ~EF_TRI3() override = default;
 
//------------------------------------------------------------------------------
 
            void
            precompute( const Matrix< real > & aXi ) override;
 
//------------------------------------------------------------------------------

            void
            link( Element * aElement ) override;
 
//------------------------------------------------------------------------------

            const Matrix< real > &
            E( const uint aIndex ) override;
 
//------------------------------------------------------------------------------

            const Matrix< real > &
            C( const uint aIndex = 0 ) override;
 
//------------------------------------------------------------------------------

            const Matrix< real > &
            G( const uint aIndex = 0 ) override ;
 
//------------------------------------------------------------------------------
        };
 
//------------------------------------------------------------------------------
 
        inline const Matrix <real> &
        EF_TRI3::C( const uint aIndex )
        {
            return mC ;
        }
 
//------------------------------------------------------------------------------
 
        inline const Matrix <real> &
        EF_TRI3::G( const uint aIndex )
        {
            return mGrad ;
        }
 
//------------------------------------------------------------------------------
    } /* end namespace fem */
}  /* end namespace belfem */
 
#endif //BELFEM_CL_EF_TRI3_HPP