ITK  4.4.0
Insight Segmentation and Registration Toolkit
itkFEMElement2DC0LinearTriangular.h
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18 
19 #ifndef __itkFEMElement2DC0LinearTriangular_h
20 #define __itkFEMElement2DC0LinearTriangular_h
21 
22 #include "itkFEMElementStd.h"
23 
24 namespace itk
25 {
26 namespace fem
27 {
58 {
59 public:
60 
67 
70 
71  // ////////////////////////////////////////////////////////////////////////
77 
79  virtual void GetIntegrationPointAndWeight(unsigned int i, VectorType & pt, Float & w, unsigned int order) const;
80 
82  virtual unsigned int GetNumberOfIntegrationPoints(unsigned int order) const;
83 
84  // ////////////////////////////////////////////////////////////////////////
90  virtual VectorType ShapeFunctions(const VectorType & pt) const;
91 
93  virtual void ShapeFunctionDerivatives(const VectorType & pt, MatrixType & shapeD) const;
94 
96  virtual bool GetLocalFromGlobalCoordinates(const VectorType & globalPt, VectorType & localPt) const;
97 
98  // Since the Jacobian is not quadratic, we need to provide our
99  // own implementation of calculating the determinant and inverse.
100  virtual Float JacobianDeterminant(const VectorType & pt, const MatrixType *pJ = 0) const;
101 
103  virtual void JacobianInverse(const VectorType & pt, MatrixType & invJ, const MatrixType *pJ = 0) const;
104 
108  static const Float trigGaussRuleInfo[6][7][4];
109 
114  static const unsigned int Nip[6];
115 
116 protected:
117  virtual void PopulateEdgeIds(void);
118 
119  virtual void PrintSelf(std::ostream& os, Indent indent) const;
120 
121 };
122 }
123 } // end namespace itk::fem
124 
125 #endif // #ifndef __itkFEMElement2DC0LinearTriangular_h
126