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NodalTriFekete.h
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2 //
3 // File NodalTriFekete.h
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9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
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31 //
32 // Description: Header file of 2D Nodal Triangle Fekete Points
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 
36 #ifndef NODALTRIFEKETE_H
37 #define NODALTRIFEKETE_H
38 
42 #include <iostream>
43 #include <boost/shared_ptr.hpp>
47 
48 namespace Nektar
49 {
50  namespace LibUtilities
51  {
52 
53  class NodalTriFekete: public Points<NekDouble>
54  {
55  public:
56  virtual ~NodalTriFekete()
57  {
58  }
59 
61  {
62  }
63 
64  LIB_UTILITIES_EXPORT static boost::shared_ptr<PointsBaseType>
65  Create(const PointsKey &key);
66 
67  const MatrixSharedPtrType GetI(const PointsKey &pkey)
68  {
69  ASSERTL0(pkey.GetPointsDim() == 2,
70  "Fekete Points can only interp to other 2d "
71  "point distributions");
73  PointsManager()[pkey]->GetPoints(x, y);
74  return GetI(x, y);
75  }
76 
80  {
81  int numpoints = x.num_elements();
82  unsigned int np = GetTotNumPoints();
83 
84  Array<OneD, NekDouble> interp(GetTotNumPoints()*numpoints);
85  CalculateInterpMatrix(x, y, interp);
86 
87  NekDouble* d = interp.data();
89  ::AllocateSharedPtr(numpoints, np, d);
90  }
91 
92  private:
94  {
95  }
96 
97  void CalculatePoints();
98  void CalculateWeights();
99  void CalculateDerivMatrix();
100  void NodalPointReorder2d();
101 
105  Array<OneD, NekDouble> &interp);
106  }; // end of NodalTriFekete
107  } // end of namespace
108 } // end of namespace
109 
110 #endif //NODALTRIFEKETE_H
const MatrixSharedPtrType GetI(const PointsKey &pkey)
static const PointsKey NullPointsKey(0, eNoPointsType)
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:161
General purpose memory allocation routines with the ability to allocate from thread specific memory p...
boost::shared_ptr< NekMatrix< DataType > > MatrixSharedPtrType
Definition: Points.h:228
void CalculateInterpMatrix(const Array< OneD, const NekDouble > &xi, const Array< OneD, const NekDouble > &yi, Array< OneD, NekDouble > &interp)
#define LIB_UTILITIES_EXPORT
unsigned int GetPointsDim() const
Definition: Points.h:149
PointsManagerT & PointsManager(void)
Defines a specification for a set of points.
Definition: Points.h:58
double NekDouble
const MatrixSharedPtrType GetI(const Array< OneD, const NekDouble > &x, const Array< OneD, const NekDouble > &y)
NodalTriFekete(const PointsKey &key)
static boost::shared_ptr< PointsBaseType > Create(const PointsKey &key)
unsigned int GetTotNumPoints() const
Definition: Points.h:251
Stores a set of points of datatype DataT, defined by a PointKey.