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NodalTriElec.h
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1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // File NodalTriElec.h
4 //
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7 // The MIT License
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9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
10 // Department of Aeronautics, Imperial College London (UK), and Scientific
11 // Computing and Imaging Institute, University of Utah (USA).
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31 //
32 // Description: Header file of 2D Nodal Triangle Fekete Points
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 
36 #ifndef NODALTRIELEC_H
37 #define NODALTRIELEC_H
38 
40 #include <boost/shared_ptr.hpp>
45 
46 namespace Nektar
47 {
48  namespace LibUtilities
49  {
50 
51  class NodalTriElec: public Points<NekDouble>
52  {
53  public:
54 
55  virtual ~NodalTriElec()
56  {
57  }
58 
59  LIB_UTILITIES_EXPORT static boost::shared_ptr<PointsBaseType>
60  Create(const PointsKey &key);
61 
62  const MatrixSharedPtrType GetI(const PointsKey &pkey)
63  {
64  ASSERTL0(pkey.GetPointsDim()==2,
65  "NodalTriElec Points can only interpolate to other 2d "
66  "point distributions");
67  Array<OneD, const NekDouble> x, y;
68  PointsManager()[pkey]->GetPoints(x, y);
69  return GetI(x, y);
70  }
71 
73  const Array<OneD, const NekDouble>& x,
74  const Array<OneD, const NekDouble>& y)
75  {
76  int numpoints = x.num_elements();
77  Array<OneD, NekDouble> interp(GetTotNumPoints()*numpoints);
78  CalculateInterpMatrix(x, y, interp);
79 
80  unsigned int np = GetTotNumPoints();
81  NekDouble* d = interp.data();
83  ::AllocateSharedPtr(numpoints, np, d);
84  }
85 
87  {
88  }
89 
90  private:
92  {
93  }
94 
95  void CalculatePoints();
96  void CalculateWeights();
97  void CalculateDerivMatrix();
98  void NodalPointReorder2d();
99 
101  const Array<OneD, const NekDouble> &xia,
102  const Array<OneD, const NekDouble> &yia,
103  Array<OneD, NekDouble> &interp);
104  };
105  } // end of namespace
106 } // end of namespace
107 
108 #endif //NODALTRIELEC_H