cl_Element_TRI6.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_ELEMENT_TRI6_HPP
#define BELFEM_CL_ELEMENT_TRI6_HPP
 
 
#include "typedefs.hpp"
#include "Mesh_Enums.hpp"
#include "cl_ElementTemplate.hpp"
 
namespace belfem
{
    namespace mesh
    {
//------------------------------------------------------------------------------
 
        template <>
        ElementType
        ElementTemplate< 6, 3, 3, 3, 1 >::type() const
        {
            return ElementType::TRI6;
        }
 
//------------------------------------------------------------------------------
 
        template <>
        uint
        ElementTemplate< 6, 3, 3, 3, 1 >::dimension() const
        {
            return 2 ;
        }
 
//------------------------------------------------------------------------------
 
        template <>
        void
        ElementTemplate< 6, 3, 3, 3, 1 >::get_nodes_of_facet( const uint aFacetIndex, Cell< Node * > & aNodes )
        {
            // allocate the node container
            aNodes.set_size( 3, nullptr );
 
            switch( aFacetIndex )
            {
                case( 0 ):
                {
                    aNodes( 0 ) = mNodes[ 0 ];
                    aNodes( 1 ) = mNodes[ 1 ];
                    aNodes( 2 ) = mNodes[ 3 ];
                    break;
                }
                case( 1 ):
                {
                    aNodes( 0 ) = mNodes[ 1 ];
                    aNodes( 1 ) = mNodes[ 2 ];
                    aNodes( 2 ) = mNodes[ 4 ];
                    break;
                }
                case( 2 ):
                {
                    aNodes( 0 ) = mNodes[ 2 ];
                    aNodes( 1 ) = mNodes[ 0 ];
                    aNodes( 2 ) = mNodes[ 5 ];
                    break;
                }
                default:
                {
                    this->throw_facet_error( aFacetIndex );
                }
            }
        }
 
//------------------------------------------------------------------------------
 
        template <>
        void
        ElementTemplate< 6, 3, 3, 3, 1 >::get_corner_nodes_of_facet( const uint aFacetIndex, Cell< Node * > & aNodes )
        {
            // allocate the node container
            aNodes.set_size( 2, nullptr );
 
            switch( aFacetIndex )
            {
                case( 0 ):
                {
                    aNodes( 0 ) = mNodes[ 0 ];
                    aNodes( 1 ) = mNodes[ 1 ];
                    break;
                }
                case( 1 ):
                {
                    aNodes( 0 ) = mNodes[ 1 ];
                    aNodes( 1 ) = mNodes[ 2 ];
                    break;
                }
                case( 2 ):
                {
                    aNodes( 0 ) = mNodes[ 2 ];
                    aNodes( 1 ) = mNodes[ 0 ];
                    break;
                }
                default:
                {
                    this->throw_facet_error( aFacetIndex );
                }
            }
        }
 
//------------------------------------------------------------------------------
 
        template <>
        void
        ElementTemplate< 6, 3, 3, 3, 1 >::get_edges_of_facet(
                const uint aFacetIndex, Cell< Edge * > & aEdges )
        {
            // allocate the node container
            aEdges.set_size( 1, nullptr );
 
            switch( aFacetIndex )
            {
                case( 0 ):
                {
                    aEdges( 0 ) = mEdges[ 0 ];
                    break ;
                }
                case( 1 ):
                {
                    aEdges( 0 ) = mEdges[ 1 ];
                    break ;
                }
                case( 2 ):
                {
                    aEdges( 0 ) = mEdges[ 2 ];
                    break ;
                }
                default:
                {
                    this->throw_facet_error( aFacetIndex );
                }
            }
        }
 
//------------------------------------------------------------------------------
    } /* namespace mesh */
} /* namespace belfem */
 
#endif //BELFEM_CL_ELEMENT_TRI6_HPP