FEApp_LinearElement.hpp

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00001 // $Id$ 
00002 // $Source$ 
00003 // @HEADER
00004 // ***********************************************************************
00005 // 
00006 //                           Sacado Package
00007 //                 Copyright (2006) Sandia Corporation
00008 // 
00009 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
00010 // the U.S. Government retains certain rights in this software.
00011 // 
00012 // This library is free software; you can redistribute it and/or modify
00013 // it under the terms of the GNU Lesser General Public License as
00014 // published by the Free Software Foundation; either version 2.1 of the
00015 // License, or (at your option) any later version.
00016 //  
00017 // This library is distributed in the hope that it will be useful, but
00018 // WITHOUT ANY WARRANTY; without even the implied warranty of
00019 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00020 // Lesser General Public License for more details.
00021 //  
00022 // You should have received a copy of the GNU Lesser General Public
00023 // License along with this library; if not, write to the Free Software
00024 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00025 // USA
00026 // Questions? Contact David M. Gay (dmgay@sandia.gov) or Eric T. Phipps
00027 // (etphipp@sandia.gov).
00028 // 
00029 // ***********************************************************************
00030 // @HEADER
00031 
00032 #ifndef FEAPP_LINEARELEMENT_HPP
00033 #define FEAPP_LINEARELEMENT_HPP
00034 
00035 #include "FEApp_AbstractElement.hpp"
00036 
00037 namespace FEApp {
00038 
00042   class LinearElement : public FEApp::AbstractElement {
00043   public:
00044     
00046     LinearElement();
00047 
00049     virtual ~LinearElement();
00050 
00052     virtual unsigned int numNodes() const;
00053 
00055     virtual void createNodes(double x_left, double x_right,
00056                              unsigned int first_node_gid);
00057 
00059     virtual unsigned int nodeGID(unsigned int i) const;
00060   
00062     virtual void 
00063     evaluateShapes(const std::vector<double>& xi,
00064                    std::vector< std::vector<double> >& phi) const;
00065 
00067     virtual void
00068     evaluateShapeDerivs(const std::vector<double>& xi,
00069                         std::vector< std::vector<double> >& dphidxi) const;
00070 
00071     /*
00072      * \brief Evaluate Jacobian of element transformation at a set of 
00073      * points in (-1,1)
00074      */
00075     virtual void 
00076     evaluateJacobian(const std::vector<double>& xi,
00077                      std::vector<double>& jac) const;
00078 
00079   private:
00080 
00082     LinearElement(const LinearElement&);
00083 
00085     LinearElement& operator=(const LinearElement&);
00086 
00087   protected:
00088 
00090     double xl;
00091 
00093     double xr;
00094 
00096     unsigned int left_GID;
00097 
00099     unsigned int right_GID;
00100 
00101   };
00102 
00103 }
00104 
00105 #endif // FEAPP_LINEARELEMENT_HPP

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