ITK  4.3.0
Insight Segmentation and Registration Toolkit
itkFEMElement3DC0LinearTriangular.h
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1 /*=========================================================================
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3 * Copyright Insight Software Consortium
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
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14 * See the License for the specific language governing permissions and
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17 *=========================================================================*/
18 
19 #ifndef __itkFEMElement3DC0LinearTriangular_h
20 #define __itkFEMElement3DC0LinearTriangular_h
21 
22 #include "itkFEMElementStd.h"
23 
24 namespace itk
25 {
26 namespace fem
27 {
52 {
53 public:
60 
63 
64 // ////////////////////////////////////////////////////////////////////////
65 /*
66  * Methods related to numeric integration
67  */
68 
70 
72  virtual void GetIntegrationPointAndWeight(unsigned int i, VectorType & pt, Float & w, unsigned int order) const;
73 
75  virtual unsigned int GetNumberOfIntegrationPoints(unsigned int order) const;
76 
77  // ////////////////////////////////////////////////////////////////////////
78  /*
79  * Methods related to the geometry of an element
80  */
81 
83  virtual VectorType ShapeFunctions(const VectorType & pt) const;
84 
86  virtual void ShapeFunctionDerivatives(const VectorType & pt, MatrixType & shapeD) const;
87 
89  virtual bool GetLocalFromGlobalCoordinates(const VectorType & globalPt, VectorType & localPt) const;
90 
92  virtual Float JacobianDeterminant(const VectorType & pt, const MatrixType *pJ = 0) const;
93 
95  virtual void JacobianInverse(const VectorType & pt, MatrixType & invJ, const MatrixType *pJ = 0) const;
96 
98  virtual void PopulateEdgeIds();
99 
103  void ComputeNormalDirection(const VectorType & v1, const VectorType & v2, const VectorType & v3,
104  VectorType & n) const;
105 
109  void GeneralizedProjectPoint(const VectorType & x, const VectorType & origin, const VectorType & normal,
110  VectorType & xproj) const;
111 
113  itk::fem::Element::Float Determinant2x2(const VectorType & c1, const VectorType & c2) const;
114 
118  static const Float trigGaussRuleInfo[6][7][4];
119 
124  static const unsigned int Nip[6];
125 
126 protected:
127  virtual void PrintSelf(std::ostream& os, Indent indent) const;
128 
129 };
130 }
131 } // end namespace itk::fem
132 
133 #endif // #ifndef __itkFEMElement3DC0LinearTriangular_h
134