NodalTetElec.h

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///////////////////////////////////////////////////////////////////////////////
//
// File NodalTetElec.h
//
// For more information, please see: http://www.nektar.info
//
// The MIT License
//
// Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
// Department of Aeronautics, Imperial College London (UK), and Scientific
// Computing and Imaging Institute, University of Utah (USA).
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// DEALINGS IN THE SOFTWARE.
// 
// Description: Header file of 2D Nodal Triangle Fekete Points 
//
///////////////////////////////////////////////////////////////////////////////

#ifndef NODALTETELEC_H
#define NODALTETELEC_H

#include <memory>
#include <LibUtilities/Foundations/NodalUtil.h>
#include <LibUtilities/Foundations/FoundationsFwd.hpp>
#include <LibUtilities/Foundations/Points.h>
#include <LibUtilities/LinearAlgebra/NekMatrixFwd.hpp>
#include <LibUtilities/Foundations/ManagerAccess.h>
#include <LibUtilities/BasicUtils/ErrorUtil.hpp>

namespace Nektar
{
    namespace LibUtilities 
    {
 
        class NodalTetElec: public Points<NekDouble>
        {
        public:
            virtual ~NodalTetElec()
            {
            }

            LIB_UTILITIES_EXPORT static std::shared_ptr<PointsBaseType> 
                Create(const PointsKey &key);

            const MatrixSharedPtrType GetI(const PointsKey &pkey)
            {
                ASSERTL0(pkey.GetPointsDim() == 3, 
                         "NodalTetElec Points can only interp to other 3d "
                         "point distributions");
                Array<OneD, const NekDouble> x, y, z;
                PointsManager()[pkey]->GetPoints(x, y, z);
                return GetI(x, y, z);
            }

           const MatrixSharedPtrType GetI(
               const Array<OneD, const NekDouble>& x,
               const Array<OneD, const NekDouble>& y,
               const Array<OneD, const NekDouble>& z)
           {
                size_t       numpoints = x.num_elements();
                unsigned int np        = GetTotNumPoints();
                
                Array<OneD, NekDouble> interp(np*numpoints);
                CalculateInterpMatrix(x, y, z, interp);
                
                NekDouble* d = interp.data();
                return MemoryManager<NekMatrix<NekDouble> >
                    ::AllocateSharedPtr(numpoints, np, d);
            }

            NodalTetElec(const PointsKey &key) : PointsBaseType(key)
            {
                
            }

        private:
            static bool initPointsManager[];

            std::shared_ptr<NodalUtilTetrahedron> m_util;

            NodalTetElec():PointsBaseType(NullPointsKey)
            {
              
            }

            void CalculatePoints();
            void CalculateWeights();
            void CalculateDerivMatrix();
            void NodalPointReorder3d();
            void CalculateInterpMatrix(
                const Array<OneD, const NekDouble> &xia,
                const Array<OneD, const NekDouble> &yia,
                const Array<OneD, const NekDouble> &zia,
                      Array<OneD, NekDouble>       &interp);
        };
   } // end of namespace
} // end of namespace 

#endif //NODALTETELEC_H